Device for analyzing and sorting animals

Abstract

The invention relates to a device for analyzing and sorting animals and preferably aquatic animals, comprising: a housing (9); a tunnel (1) extending through the housing (9), comprising tunnel walls (4, 5), the tunnel (1) being positioned within the housing (9) and configured to guide an individual animal through the device, the tunnel (1) comprises: two or more image capturing units (6) positioned within the housing (1) configured to capture images of the tunnel (1), wherein each image capturing unit (6) comprises an image capturing device to capture images of the tunnel (1); configured for capturing images of at least one section of the tunnel (1), wherein said image capturing units (6) are provided laterally behind the tunnel walls (4, 5) on opposite lateral sides of the tunnel (1), said tunnel walls (4, 5) on the lateral sides being transparent; and illumination means (10) configured to provide illumination at said at least one section of the tunnel (1), said upper and / or lower tunnel wall (4, 5) being transparent.

Description

[0001] DEVICE FOR ANALYZING AND SORTING ANIMALS

[0002] FIELD OF THE INVENTION

[0003] In a first aspect, the invention relates to a device and a use for analyzing and sorting animals and preferably aquatic animals.

[0004] BACKGROUND

[0005] Farming, especially in aquaculture, encounters a multitude of challenges that impact both its efficiency and sustainability. High mortality rates, costly treatments for diseases and infestations, environmental concerns related to food waste, faecal disposal, and CO2 emissions, and an inability to meet increasing global demand are significant issues. Traditional methods of farming are far from sustainable, polluting and not sufficient. Moreover, the healthiness, taste, and overall quality of the animal should be improved. Additionally, there is also a growing need for better animal welfare in the farming process. Animal identification is thus a major requirement, facilitating registration of animals, recording of authorized animal movements, herd management, and payments of appropriate grants and subsidies and as a vital tool in tracing diseases of public and animal health concern. Furthermore, farmers and integrated food suppliers, even retailers, have requirements for specific traceability of their animal products to identify growth characteristics on an individual basis as well as identification of the food animal origins for history of feed and feed ingredients, disease and treatment details.

[0006] Furthermore, it is crucial to address Environmental, Social, and Governance (ESG) criteria and comply with Corporate Sustainability Reporting Directive (CSRD) requirements. Currently, sorting processes predominantly focus on dimensions, rather than weight, and lack further differentiation such as by gender, or distinguishing between fast and slow growers. These limitations hinder the effective management and fail to optimize the operational efficiencies necessary for sustainable practices. Enhanced sorting criteria are essential to improve the sustainability and traceability of farming operations, aligning them more closely with ESG goals and CSRD regulations. This would also facilitate better resource allocation, animal welfare, and product quality, ultimately contributing to more responsible and efficient farming practices.

[0007] The traditional techniques and devices for analyzing and sorting animals, especially for aquatic species, are inefficient as they often suffer from limitations in accuracy, speed, and the gentle handling of the animals. These limitations can lead to stress or harm to the animals, reduced throughput for processing, and inaccuracies in sorting that affect overall operational efficiency.

[0008] Traditional identification schemes, often based on (ear)-tag numbers linked to a computer database, primarily track devices attached to animals, not the animals themselves. This approach can lead to complications, such as the accidental loss or fraudulent switching of tags, making it difficult to maintain accurate identification. In the context of aquaculture, the use of Passive Integrated Transponder (PIT) tags in fish is a significant procedure involving anesthesia, and is strictly regulated. These tags are costly and must be removed after slaughter to avoid them remaining in the final food product, as consumers would not want to find a PIT tag in their salmon meal. This method, while precise, incurs high costs and requires invasive procedures, raising both ethical and practical concerns

[0009] Therefore, there is a need for a more efficient, non-invasive and sustainable solution for analyzing and sorting animals, specifically aquatic animals, in farming environments. The present invention aims to resolve at least some of the problems and disadvantages mentioned above.

[0010] SUMMARY OF THE INVENTION

[0011] In a first aspect, the invention relates to a device according to claim 1. Preferred embodiments of the first aspect of the invention are described in claims 2 to 14.

[0012] The invention relates to a device configured to analyze and sort animals, in particular aquatic animals. The device comprises a housing with a tunnel that guides individual animals through the device in a stress-free manner. The tunnel includes an inlet, an outlet, image capturing units and illumination means, all enclosed by a housing. The housing is a shell or enclosure that contains all the components of the device. The tunnel is a passageway extending through the housing, equipped with walls to guide an individual animal through the device. At least some of the tunnel walls are transparent. The inlet and outlet of the tunnel define the beginning and the end of the tunnel. The inlet introduces the animal into the tunnel, while the outlet, which can be equipped with one or more sorting means, sorts the individual animal. Each image capturing unit comprises an image capturing device and a conduit. These units are provided laterally behind the transparent tunnel walls on opposite lateral sides of the tunnel. The term conduit refers to a closed space extending from the image capturing device on each lateral side of the tunnel, to the wall on the lateral side of the tunnel, through which the image capturing device observes the tunnel. Furthermore, illumination means are provided at or behind an upper and / or lower transparent tunnel wall and are configured to provide illumination at a section of the tunnel. These illumination means extend longitudinally within the tunnel. Mirrors refers to reflective surfaces that may be used to define an optical path from the image capturing unit to the tunnel.

[0013] A goal of the invention is to improve the accuracy and efficiency of analyzing and sorting animals, particularly aquatic animals.

[0014] A goal of the invention is to facilitate the non-invasive monitoring of aquatic animal populations.

[0015] A goal of the invention is to enhance the precision of image capture in aquatic environments.

[0016] A goal of the invention is to maximize the effectiveness of the illumination within the device.

[0017] A goal of the invention is to optimize the flow and movement of animals through the tunnel, employing a design that naturally guides the animals from the inlet to the outlet with minimal resistance or redirection, thus reducing stress and potential injuries.

[0018] A goal of the invention is to ensure the stability and reliability of image capture.

[0019] A goal of the invention is to enhance the repeatability and consistency of the background in image captures.

[0020] A goal of the invention is to minimize optical distortions and reflections.

[0021] A goal of the invention is to minimize the environmental impact of the device.

[0022] A goal of the invention is to provide a submersible device designed for the detailed analysis of fish, facilitating underwater operation and observation.

[0023] A goal of the invention is to provide a versatile device capable of accommodating a wide range of animal sizes and types.

[0024] In a second aspect, the invention relates to a use according to claim 15. This invention revolutionizes fish farming by enabling non-invasive, precise monitoring and sorting of aquatic animals, directly within their habitat. It significantly enhances operational efficiency, reduces stress on the animals, and provides valuable data for optimizing farm management practices.

[0025] DESCRIPTION OF FIGURES

[0026] The following description of the figures of specific embodiments of the invention is merely exemplary in nature and is not intended to limit the present teachings, their application or uses. Throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0027] Figure 1 shows a perspective view of a device, fully enclosed by a housing according to an embodiment of the present invention.

[0028] Figure 2 shows a perspective overview of the device, partially enclosed in a housing according to an embodiment of the present invention.

[0029] Figure 3 shows a top view of the device, without housing according to an embodiment of the present invention.

[0030] Figure 4 shows a cross-sectional view of the device according to an embodiment of the present invention.

[0031] Figure 5 shows an exploded view of the device according to an embodiment of the present invention.

[0032] Figure 6 shows a perspective view of a sorting mean according to an embodiment of the present invention.

[0033] Figure 7 shows a perspective view of a sorting mean according to another embodiment of the present invention.

[0034] Figure 8 shows a perspective view of a device according to another embodiment of the present invention.

[0035] DETAILED DESCRIPTION OF THE INVENTION

[0036] The present invention relates to a device for analyzing and sorting animals and preferably aquatic animals.

[0037] Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the present invention.

[0038] As used herein, the following terms have the following meanings:

[0039] "A", "an", and "the" as used herein refers to both singular and plural referents unless the context clearly dictates otherwise. By way of example, "a compartment" refers to one or more than one compartment.

[0040] "About" as used herein referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of + / - 20% or less, preferably + / -10% or less, more preferably + / -5% or less, even more preferably + / -1% or less, and still more preferably + / -0.1% or less of and from the specified value, in so far such variations are appropriate to perform in the disclosed invention. However, it is to be understood that the value to which the modifier "about" refers is itself also specifically disclosed.

[0041] "Comprise", "comprising", and "comprises" and "comprised of" as used herein are synonymous with "include", "including", "includes" or "contain", "containing", "contains" and are inclusive or open-ended terms that specifies the presence of what follows e.g. component and do not exclude or preclude the presence of additional, non-recited components, features, element, members, steps, known in the art or disclosed therein.

[0042] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order, unless specified. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0043] The recitation of numerical ranges by endpoints includes all numbers and fractions subsumed within that range, as well as the recited endpoints.

[0044] The expression "% by weight", "weight percent", "%wt" or "wt%", here and throughout the description unless otherwise defined, refers to the relative weight of the respective component based on the overall weight of the formulation. Whereas the terms "one or more" or "at least one", such as one or more or at least one member(s) of a group of members, is clear per se, by means of further exemplification, the term encompasses inter alia a reference to any one of said members, or to any two or more of said members, such as, e.g., any >3, >4, >5, >6 or >7 etc. of said members, and up to all said members.

[0045] Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, definitions for the terms used in the description are included to better appreciate the teaching of the present invention. The terms or definitions used herein are provided solely to aid in the understanding of the invention.

[0046] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to a person skilled in the art from this disclosure, in one or more embodiments. Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form different embodiments, as would be understood by those in the art. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0047] The term "transparent" in the context of this invention refers to an attribute of a material or substance that allows light to pass through it such that objects behind can be distinctly seen and captured by the image capturing devices that are used in the invention.

[0048] The term "animal" in the context of this invention preferably refers to an aquatic animal, preferably to fish. However, it's important to emphasize that the device is not limited to fish alone; it is designed to accommodate a wide range of animals. This example with fish serves to highlight the invention's specific functionalities and advantages in a context where its features can be fully appreciated. Yet, the underlying principles and mechanisms are adaptable and can be applied to various other animals. In a first aspect, the invention relates to a device for analyzing and sorting animals and preferably aquatic animals.

[0049] In particular, the devices comprises a housing, a tunnel with an inlet and outlet, an image capturing unit and illumination means. The device operates by guiding an individual animal through the tunnel, from the inlet to the outlet. As the animal moves through the tunnel, the image capturing units take images of it and preferably from multiple angles, facilitated by the illumination provided. These images can then be analyzed to determine various characteristics of the animal, such as size, shape, or specific features relevant to the sorting criteria. Upon reaching the outlet, the device may sort the animal based on the analysis conducted during its passage through the tunnel, as required by the user. This device offers a stress-free solution for analyzing and sorting animals, particularly aquatic ones, with applications potentially ranging from research to commercial aquaculture. Its design allows for non-invasive analysis and efficient sorting, catering to the needs of industries where such capabilities are essential.

[0050] In a preferred embodiment, the housing encompasses all internal components of the device as described in the present invention. The housing serves as the structural foundation of the device. Preferably, the housing is constructed from durable materials that can withstand an aquatic environment and the operational stresses. The housing ensures the device's longevity and reliability. Its design facilitates easy access for maintenance and adjustment of the internal components, while also safeguarding the mechanisms from external contaminants. The housing may have a trapezoidal or tapered profile when viewed in cross-section along the longitudinal tunnel axis. Preferably, it is wider around the tunnel and narrows further to the sides. In case when the device is used underwater, the housing with a trapezoidal or tapered profile offers several advantages related to hydrodynamics, structural integrity, and internal component accommodation. A trapezoidal or tapered shape can significantly reduce drag as water flows around the housing. This streamlined shape allows the device to operate more efficiently, with less resistance from the water. This is particularly important for devices that might be moved through water or when water flows actively through the device, as it minimizes the energy required for operation and can also reduce the stress on the device's anchoring system. The wider section around the tunnel provides buoyancy and stability, ensuring the device maintains its intended orientation in the water. This stability is crucial for accurate image capturing and analysis, as it reduces potential distortions or variations caused by shifting or tilting of the device. Lastly, water pressure increases with depth, and a tapered design helps in distributing this pressure more evenly across the device's surface.

[0051] In a preferred embodiment, the tunnel extends through the housing and comprises tunnel walls. The tunnel is positioned within the housing and configured to guide an individual animal through the device the tunnel. Preferably, the walls of the tunnel are transparent on the lateral sides, allowing for observation and imaging of the animal as it passes through. Alternatively, the tunnel is formed of the image capturing unit and the illumination means themselves. This implies that said components are integral to the tunnel's structure. Integrating these components could lead to a more streamlined and compact device, potentially improving efficiency in terms of space, energy use, and even the accuracy of analyzing and sorting the animals, by removing an intermediary wall.

[0052] Preferably, the tunnel comprises an inlet which is positioned within one of the walls of the tunnel. The inlet marks the beginning of the tunnel. It is specially designed to introduce an individual animal into the tunnel, ensuring a smooth entry process. It is configured to introduce individual animals into the tunnel, minimizing stress and potential injury. The design of the inlet can be adapted to suit different animal sizes, incorporating mechanisms such as adjustable openings to ensure compatibility with a wide range of animal types.

[0053] Preferably, the tunnel comprises an outlet which is positioned within one of the walls of the tunnel. The outlet marks the end of the tunnel. The outlet is preferably positioned at the opposing end of the inlet of the tunnel, ensuring a seamless and direct pathway for the animal from entry to exit. Preferably, the outlet is equipped with one or more sorting means, the sorting means are configured to sort the individual animal, based on predetermined criteria, which are typically analyzed based on images from the image capturing units during the passage of the animal through the tunnel. This configuration enhances the device's precision in sorting, ensuring that each animal is accurately categorized according to the desired criteria. Sorting means are responsible for the sorting process of the individual animal postanalysis.

[0054] Preferably, two or more image capturing units are positioned within the housing and are configured to capture images of a section of the tunnel, more preferably of the whole length of the tunnel. The image capturing units are typically located laterally behind the transparent tunnel walls, enabling a clear view of the tunnel. This arrangement facilitates a comprehensive analysis of the animal's characteristics as it will capture images of the animal as it traverses at least one section of the tunnel. These units are strategically placed on opposite lateral sides of the tunnel to ensure comprehensive coverage and optimal imaging quality. The symmetric placement of these units, in addition, may allow for the capturing of images from different angles, thereby providing a more complete and accurate representation of the animal. Alternatively, the design can be simplified to incorporate a single image capturing unit. This modification aims to streamline the device's complexity, potentially reducing manufacturing costs and maintenance requirements.

[0055] Preferably, each image capturing unit includes an image capturing device, such as a high-resolution camera, capable of capturing images of at least one section of the tunnel. This arrangement allows for the detailed analysis of physical characteristics, facilitating accurate sorting based on predetermined criteria. The image capturing device is preferably positioned at the narrower end of the conduit. Predefined criteria or characteristics can be for example: size and length, species identification, color and pattern, swimming behavior, external health indicators, sex, maturity stage. Alternatively, only one image capturing unit comprises an image capturing device. The devices may also be equipped with features such as adjustable focus and zoom capabilities, which further enhance their imaging performance.

[0056] Preferably, illumination means are provided at or behind an upper and / or lower tunnel wall and positioned within the housing. Illumination means are needed to obtain clear images. The illumination means are configured to provide illumination at said at least one section of the tunnel, said upper and / or lower tunnel wall being transparent. To support the image capturing units, the device includes illumination means are configured to provide consistent, optimal lighting conditions within the tunnel. The illumination means are carefully calibrated to enhance image quality without causing discomfort or harm to the animals. The positioning and configuration of these illumination means ensure that the section of the tunnel under observation is well-lit, enhancing the quality of the images captured by the image capturing units. This all ensures that the image capturing device can capture high-quality images necessary for precise analysis and sorting. Poor image quality could lead to erroneous analysis results, affecting the reliability of the information obtained and potentially leading to inappropriate actions taken in relation to the individual animal.

[0057] According to a further or alternative embodiment, the transparent tunnel walls comprise a material that is chosen from a list of: polymethylmethacrylate (PMMA), polycarbonate, polyethylene terephthalate glycol (PETG), polyvinyl chloride (PVC), cyclic olefin copolymer, glass or combinations thereof.

[0058] Materials like PMMA, polycarbonate, and glass are chosen for their high optical clarity, ensuring that the image capturing units can obtain clear, detailed images of the animals inside the tunnel. This clarity is crucial for accurate analysis and sorting. Furthermore, PMMA and polycarbonate can be chosen for their resistance to UV light and their ability to maintain transparency without yellowing over time. This is especially important for devices used outdoors or in environments with significant UV exposure. Polycarbonate and PETG are known for their exceptional durability and impact resistance, making them suitable for environments where the device might be subject to mechanical stress or where safety is a paramount concern. PVC and cyclic olefin copolymer offer excellent chemical resistance, which is important in settings where the walls may be exposed to aggressive cleaning agents, chemicals, or corrosive substances. This ensures the longevity and maintenance of the device's integrity over time. Certain materials like PETG and PVC offer flexibility and are easier to fabricate into complex shapes or customized designs. This allows for the creation of tunnels that precisely meet the device's specifications or incorporate innovative features to enhance its functionality. Different materials have varying degrees of tolerance to temperature changes. For example, glass and certain types of polymers can withstand higher temperatures, making them suitable for applications where the device may be exposed to heat. Using combinations of these materials allows for the customization of the tunnel walls to achieve specific properties, such as enhanced optical clarity, durability, or chemical resistance, tailored to the unique needs of each application.

[0059] According to a further or alternative embodiment, the transparent tunnel walls are made of at least 50% PMMA, preferably at least 60% PMMA, more preferably at least 70% PMMA, even more preferably at least 80% PMMA, even more preferably at least 90% PMMA, even more preferably at least 95% PMMA. In particular, the transparent tunnel walls are approximately made of 100% PMMA. PMMA has an exceptional optical clarity, surpassing many glass types. This characteristic is crucial for imaging and observation purposes within the tunnel, ensuring that the images captured by the device's cameras are as clear and detailed as possible. Preferably, Cast PMMA, rather than extruded, is used for its unparalleled optical clarity. Compared to glass, PMMA offers superior durability and resistance to impact. This quality is particularly valuable in environments where the device may be subject to mechanical stresses or where the safety and integrity of the tunnel need to be assured over time. Furthermore, PMMA is significantly lighter than glass, contributing to the overall lightweight design of the device. This feature can be especially beneficial for portable devices or those where minimizing weight is crucial for operational efficiency or ease of installation. PMMA also exhibits good resistance to a variety of chemicals, making it an ideal choice for use in environments where the tunnel may be exposed to corrosive substances or where strict hygiene standards necessitate frequent cleaning with chemical agents. Lastly, PMMA is relatively easy to fabricate and mold into complex shapes, allowing for the customization of the tunnel walls to specific design requirements or to incorporate features that enhance the device's functionality, such as integrated lensing for improved imaging.

[0060] Equally important is that the refractive index of PMMA is a good approximation of that of water (more so than for instance regular glass), thus reducing refraction that would occur, which could distort the images that are captured. Such distortions in images are often difficult to process via algorithms, and would increase the processing time needed to analyze the images, which is to be avoided.

[0061] According to a further or alternative embodiment, the tunnel walls on the lateral sides of the tunnel are planar. Planar walls ensure that the images captured by the lateral image capturing units are free from distortion that can be caused by curved surfaces. This is crucial for accurate analysis, as it allows for precise measurement and evaluation of the characteristics of the animals within the tunnel without the need for complex correction algorithms. Planar walls are generally easier to manufacture and assemble with precision compared to curved or irregularly shaped structures. This simplicity extends to maintenance and cleaning, as flat surfaces are typically more accessible and easier to keep clean, ensuring the device remains hygienic and functional over time. This durability is crucial for maintaining the integrity of the tunnel and the safety of the animals being analyzed. Furthermore, a straightforward, planar design can help to ensure that animals move smoothly through the tunnel without being diverted or slowed by irregularities in the wall's surface. This smooth progression is vital for minimizing stress on the animals and for maintaining a consistent flow of individual animals through the device for analysis and sorting. When in combination with illumination means, the flat surfaces also facilitate uniform illumination across the tunnel, minimizing shadows and bright spots that could interfere with image quality. This consistent lighting is essential for reliable image analysis, ensuring that features of the animals are clearly visible and accurately represented in the captured images. According to a further or alternative embodiment, the inlet can comprise a controllably adjustable diaphragm mechanism, configured to adjust a size of an inlet opening of the inlet. The diaphragm is preferably inflatable, as this offers a nuanced control over the inlet's aperture. The adjustable inlet opening allows the device to accommodate a wide range of animal sizes and shapes, making the device highly versatile and applicable to diverse species. By enabling precise adjustment of the inlet opening, the mechanism minimizes stress and potential harm to the animals as they are introduced into the tunnel. An inflatable diaphragm can be gently expanded or contracted to match the animal's size closely, reducing the risk of injury and stress associated with the sorting process, and furthermore avoids the necessity for sharp edges at the diaphragm. The controllably adjustable diaphragm mechanism streamlines the sorting and analysis process by quickly adapting to each animal's needs without requiring manual adjustments or changing physical components. This efficiency is particularly advantageous in settings where time and accuracy are of the essence, such as high-throughput sorting facilities or research studies with large sample sizes. Furthermore, utilizing an inflatable diaphragm to adjust the inlet opening size reduces the mechanical wear and tear associated with mechanical adjustment mechanisms. This design choice leads to lower maintenance requirements and longer equipment life, contributing to the device's overall costeffectiveness and reliability. The adjustable diaphragm mechanism may be controlled either manually or automatically. The diaphragm mechanism may include a sensor that detects the size of the approaching animal. The mechanism is made from a durable, preferably water-resistant material that can withstand the harsh conditions of an aquaculture environment. The mechanism is made from a material that is nontoxic and safe for the animal. An alternative is a variable aperture gate, which employs adjustable slats for precision control, offering durability and a potentially quicker adjustment response. Another option is the screw-based adjusting mechanism for a high reliability and fine-tuned control over the opening size. An electromechanical iris diaphragm, comprising camera technology, can provide rapid and precise adjustments with its overlapping plates, seamlessly integrating with automated systems for efficiency. Also, a flexible collar or ring with actuators can be used, utilizing hydraulic, pneumatic, or electronic actuators to adjust the inlet size gently, making it an ideal choice for reducing stress on the animals.

[0062] According to a further or alternative embodiment, the outlet is provided with one or more sorting means. The sorting means are configured to sort the individual animal. The one or more sorting means are chosen from a list of: a diversion valve, a pneumatic diverter, a waterflow diverter, a mechanical gate, a rotating diverter, an electromechanical sorter or combinations thereof. This diverse range of sorting means is selected for their distinct advantages and suitability for different operational scenarios. The diversion valve stands out for its ability to swiftly redirect flow, making it ideal for quick sorting operations. Pneumatic diverters offer precise control with minimal mechanical wear, enhancing reliability and longevity. Waterflow diverters leverage the natural movement of water to guide animals gently, minimizing stress and potential harm. Mechanical gates, known for their robustness, provide a durable solution for physically separating individuals based on size or other criteria. Rotating diverters introduce flexibility and efficiency, capable of directing animals to multiple outlets for detailed categorization. Electromechanical sorters combine the precision of electronic control with mechanical action, offering unparalleled accuracy and adaptability in sorting based on complex parameters. These options are carefully chosen to ensure the sorting process is not only effective but also adaptable to various requirements, from the gentle handling of delicate species to the efficient processing of large volumes. Each mechanism's unique attributes contribute to a highly versatile and reliable sorting system, capable of meeting the diverse needs of animal analysis and sorting applications. Alternatively, the sorting means are incorporated directly in the housing.

[0063] According to a further or alternative embodiment, the image capturing units are substantially symmetrically provided at the opposite lateral sides of the tunnel. Placing the image capturing units in a substantially symmetrical arrangement on opposite lateral sides of the tunnel offers several key advantages for the analysis and sorting of animals, particularly in ensuring high-quality data acquisition and enhancing the device's operational efficiency. Symmetry in the placement ensures that the lighting and perspective are balanced across both sides of the tunnel. This balance is crucial for capturing clear, consistent images of the tunnel, and thus the animals, from multiple angles. This will minimize shadows and reflections that could obscure important details or features. With image capturing units positioned on both sides, the system can obtain a more comprehensive view of the tunnel, and thus the animal within the tunnel. This dual-sided perspective allows for a more accurate analysis of the animal's size, shape, and other characteristics essential for sorting. It enables the detection of features that may not be visible from a single side, ensuring a more thorough assessment. By capturing images simultaneously from both sides, the system can analyze animals more quickly than if it had to rely on a single image capturing unit or sequential captures. The quick and efficient capture of images also means that animals spend less time in the tunnel, reducing stress and the potential for harm. This consideration is particularly important for delicate aquatic animals, for whom prolonged exposure to stressful conditions can lead to health issues. Furthermore, the symmetrical placement contributes to the system's reliability by providing redundancy. If one unit fails or captures an unclear image, the opposite unit can still provide valuable data, ensuring that the analysis and sorting process can continue without significant interruption. For instance, if the animal is close to one of the lateral tunnel walls, this might negatively affect the quality of one image, but would improve the quality of the other image.

[0064] According to a further or alternative embodiment, each image capturing unit comprises an image capturing device configured to capture images of the tunnel, wherein each image capturing device is chosen from a list of high-resolution digital cameras, complementary metal-oxide-semiconductor (emos) cameras, charge- coupled device (ccd) cameras, infrared cameras, 3D cameras or microscopic cameras.

[0065] Preferably, high-resolution digital cameras are chosen as these are the most common choice for capturing detailed images. High-resolution cameras can capture the fine details of animals passing through the tunnel, which is essential for accurate analysis and sorting. They are versatile, offering a range of settings that can be adjusted according to the specific needs of the analysis, such as shutter speed, aperture, and ISO sensitivity.

[0066] Preferably, CMOS cameras are chosen as these are suited for high-speed image capture, making them ideal for analyzing fast-moving animals. They offer excellent image quality, low power consumption, and the ability to capture images at high frame rates, which is crucial for capturing clear images of animals in motion.

[0067] Preferably, CCD cameras are chosen as these are known for their exceptional image quality and sensitivity, making them suitable for low-light conditions. While they typically operate at lower frame rates than CMOS cameras and can be more expensive, they provide high-quality images with less noise, beneficial for detailed analysis.

[0068] Preferably, infrared cameras are selected for their ability to analyze animals without influencing their behavior through exposure to visible light. These cameras prove invaluable in low-light environments or when studying nocturnal species, facilitating the device's continuous operation while ensuring the animals remain undisturbed. Preferably, 3D cameras are chosen for their capacity to capture comprehensive depth information alongside visual imagery, providing intricate details on the shape and volume of the animals. Such detailed data is exceptionally beneficial for sorting purposes, particularly when differentiating animals based on size or body composition.

[0069] Preferably, microscopic cameras underwater cameras are chosen for small or juvenile animals, microscopic cameras can capture the minute details necessary for specific types of analysis. These cameras are designed to integrate with microscopic optics, offering magnification capabilities for detailed examinations.

[0070] According to a further or alternative embodiment, each image capturing unit is positioned and oriented for capturing images of a predefined zone in the tunnel. By focusing on predefined zones, the image capturing devices of the image capturing units can capture high-quality images of specific areas of interest within the tunnel. This targeted approach ensures that the most relevant features of the animals passing through are captured for analysis, such as identifying markings, size measurements, or specific anatomical features. Positioning the image capture devices to target predefined zones allows for the optimization of lighting conditions within those areas. This can significantly improve the clarity and quality of the captured images, reducing shadows, glare, and reflections that could otherwise compromise image analysis. Focusing on predefined zones helps in efficiently utilizing the device's resources. It minimizes the amount of data that needs to be processed and stored, focusing computational and storage capacities on high-value image captures. This can lead to faster processing times and reduced operational costs. With image capturing units oriented towards specific zones, the device can achieve greater accuracy in analyzing the animals. This precise focus allows for detailed assessments of the animals' characteristics, leading to more accurate sorting based on the predefined criteria. For instance, focusing on a zone where body size can be best assessed can improve size-based sorting accuracy. This configuration allows the device to be adaptable to different species and sizes of animals. By adjusting the predefined zones according to the species being analyzed, the device can maintain high accuracy and effectiveness across a wide range of animal types and sizes, enhancing its versatility. Orienting the cameras towards predefined zones ensures consistency in the data collected over time, which is crucial for longitudinal studies and quality control processes. Consistent data collection facilitates the comparison of datasets and the tracking of changes or trends in the animals' characteristics. More preferably, the predefined zone targeted by each image capturing unit encompasses the entire length of the tunnel. This approach ensures that detailed images of the animals are captured from the moment they enter until they exit the tunnel. Capturing images across the entire length of the tunnel guarantees that no part of the animal goes undocumented. This complete coverage is crucial for thorough analysis, allowing for the observation and recording of every aspect of the animal's size, shape, behavior, and other characteristics as it moves through the device. With the whole length of the tunnel as the predefined zone, the device can collect more extensive data on each animal. This depth and breadth of data enhance the accuracy of analysis, allowing for more refined sorting criteria and improved decision-making based on comprehensive information.

[0071] According to a further or alternative embodiment, each image capturing unit comprises a closed conduit extending from the image capturing device to the wall on the lateral side of the tunnel, through which conduit the image capturing device observes the tunnel. The conduit acts as a protective barrier between the image capturing device and the tunnel, which can be particularly beneficial in aquatic settings or other environments where moisture, debris, or other potential contaminants are present. This protection helps to prolong the lifespan of the image capturing device and maintain its performance over time. The closed design of the conduit minimizes the impact of external environmental factors, such as changes in ambient light or the presence of external objects that could interfere with the image capture process. This isolation ensures that the conditions within the conduit remain consistent, further improving the reliability of the captured images.

[0072] According to a further or alternative embodiment, the conduit comprises a base portion provided on the wall on the lateral side of the tunnel and tapers towards the image capturing device, the conduit preferably being pyramidal in shape. By tapering towards the image capturing device, the conduit restricts the field of view to a specific area of interest within the tunnel. This ensures that the image capturing device captures only the most relevant information, improving the efficiency of data collection and analysis by focusing on the areas where animal presence is most likely to be significant. Incorporating a closed conduit that extends from the image capturing device on each lateral side of the tunnel to the wall on the same side significantly enhances the design and functionality of the device for analyzing and sorting animals. This configuration, particularly when the conduit tapers in a pyramidal shape towards the image capturing device, is specifically designed to optimize horizontal orientation, emphasizing the lateral reduction in diameter from the base portion at the tunnel wall towards the image capturing device. The specific angle of tapering may vary depending on factors such as the size and species of the animal, and the type of image capturing device used. If the device is intended for use in an aquatic environment, the conduit offers waterproof capabilities along with high-quality imaging. The conduit is built to withstand the challenges of underwater operation, including pressure, corrosion, and lighting conditions.

[0073] Preferably, the conduit tapers in the horizontal plane. The "horizontal plane", in this context, refers to a flat, two-dimensional surface that extends left to right and front to back, parallel to the ground. This orientation contrasts with the vertical plane, which would extend upward and downward, perpendicular to the ground. Thus, when the conduit is tapered in the horizontal plane, it means that the diameter of the conduit decreases from the base portion attached to the tunnel wall towards the image capturing device in a direction that is parallel to the ground. The horizontal tapering within the conduit plays a pivotal role in enhancing the functionality of the image capturing device. This design ensures that a concentrated beam of illumination is directed, where it is needed, onto the tunnel where the animals move. This design is optimal for capturing sharp, detailed images by significantly reducing lateral light dispersion. It effectively eliminates common issues such as glare and reflections, which can negatively impact the clarity of the images. Moreover, it is crucial for isolating the imaging area from external environmental factors, such as changes in ambient lighting or potential obstructions. This isolation ensures a consistent, controlled environment within the conduit, which is essential for obtaining reliable and high-quality images that accurately reflect the features of the animals being analyzed. Additionally, the design of the conduit's base, where it meets the tunnel wall, is adaptable to support various tunnel sizes and shapes. This versatility is key to customizing the device to fit different operational contexts, further enhancing its utility and efficiency in capturing and analyzing detailed images of animals passing through.

[0074] According to a further or alternative embodiment, each conduit is filled with a medium, wherein the medium is chosen from a list of water, demineralized water, oxygen gas, nitrogen gas, argon gas, helium gas, xenon gas, sulfur hexafluoride or combinations thereof. In particular, the medium comprises oxygen gas and nitrogen gas. This significantly enhances the functionality and effectiveness of the image capturing units within the analyzing and sorting device. The mediums are chosen for their optical properties, which can improve the clarity and quality of the images captured by the device. For example, water and demineralized water have refractive indices that can minimize distortion when capturing images through the conduit, ensuring that the captured images are as clear and accurate as possible. Gases like helium and argon might be used to create an environment with minimal optical interference, enhancing image sharpness. Different media can affect how light travels through the conduit to the image capturing device. By carefully selecting the medium, it's possible to control the light's speed and direction, reducing aberrations and focusing the light more effectively on the subject. This control is crucial for high- precision imaging, particularly when analyzing fine details or subtle characteristics of the animals. Furthermore, filling the conduits with these media can also protect the image capturing devices from external factors, such as dust, moisture, and direct contact with water, especially in settings where the device may be exposed to harsh or corrosive environments. Gases like nitrogen can create an inert atmosphere that prevents oxidation and degradation of sensitive components. Some media can enhance the contrast and resolution of the captured images. For instance, denser gases like xenon may increase the contrast between different parts of the subject, making it easier to distinguish between subtle features. This enhancement is crucial for accurate analysis and sorting based on detailed morphological criteria. Using demineralized water can thus be preferable for applications requiring very high optical purity, while gases like xenon or sulfur hexafluoride could be chosen for their specific refractive or protective properties.

[0075] According to a further or alternative embodiment, each conduit is filled with a medium, wherein the medium comprises at least 50 vol%, more preferably at least 60 vol%, even more preferably at least 70 vol%, even more preferably at least 80 vol%, even more preferably at least 90 vol%, even more preferably at least 95 vol%, even more preferably at least 98 vol%, even more preferably at least 99 vol% and in particular approximately 100 vol% oxygen gas.

[0076] According to a further or alternative embodiment, each conduit is filled with a medium, wherein the medium comprises at least 50 vol%, more preferably at least 60 vol%, even more preferably at least 70 vol%, even more preferably at least 80 vol%, even more preferably at least 90 vol%, even more preferably at least 95 vol%, even more preferably at least 98 vol%, even more preferably at least 99 vol% and in particular approximately 100 vol% nitrogen gas.

[0077] According to an embodiment, the device is designed to have a substantially equal average density as the water in which it is submerged. This can in part be achieved by dimensioning the conduit accordingly, in cooperation with the medium that is present therein. By changing the dimensions of the conduit, the total weight of the tank can be modified, to better match the density of the medium in which it is submerged. This way, the device can substantially float on its own, which relieves the requirements for a support means, such as a movable arm with a winch or similar mechanism with which the device can be supported. By having an essentially naturally buoyant (slightly higher density) device, such a support means would not necessarily need to have a very high power output, and the device could be easily moved in the water, both laterally as in depth.

[0078] According to a further or alternative embodiment, the tunnel comprises a total length extending from a beginning of the inlet to an and of the outlet, wherein the base portion of the conduit of the image capturing unit has a width measured from one edge of the base portion of the conduit to an opposite edge along the length of the tunnel, where the width of the base portion of the conduit is at least 80% of the total length the tunnel, preferably at least 85%, even more preferably at least 90%, even more preferably at least 95%, even more preferably at least 98 %. In particular, the width of the base portion of the conduit corresponds to the total length of the tunnel. Matching the width of the base of the conduit to the length of the tunnel ensures a maximized field of view for the image capturing device. This allows for comprehensive observation and documentation of the animal as it moves through the entire length of the tunnel, ensuring no detail is missed. This configuration can facilitate uniform illumination across the length of the tunnel. With the conduit spanning the entire length, lighting can be distributed more evenly, minimizing shadows and ensuring consistent image quality from one end of the tunnel to the other. Furthermore, this approach simplifies the image processing workflow by standardizing the scale and perspective of images captured along the tunnel's length. It streamlines the analysis, allowing for automated systems to detect and interpret relevant features without needing to adjust for variations in field size or image scale more easily. By aligning the conduit's width with or close to the tunnel's length, the device becomes more adaptable to various animal sizes and lengths. This adaptability ensures that the system can efficiently analyze and sort a wide range of species without requiring significant adjustments to the hardware for different types of animals.

[0079] According to a further or alternative embodiment, the tunnel comprises a total height measured from the upper to lower wall of the tunnel, wherein the base portion of the conduit of the image capturing unit has a height measured from one edge of the base portion of the conduit to the opposite edge and substantially perpendicular to the length of the base portion of the conduit, wherein the height of the base portion of the conduit is at least 80% of the total height of the of the tunnel, preferably at least 85%, even more preferably at least 90%, even more preferably at least 95%, even more preferably at least 98 %. In particular, the height of the base portion of the conduit corresponds to the total length of the tunnel.

[0080] By having the conduit's height cover a substantial portion of the tunnel's height, the image capturing units are likely to have an enhanced field of view that encompasses a large part of the tunnel. This ensures that a significant section of the tunnel, and thus the animals passing through, can be captured in the images. It minimizes blind spots and increases the likelihood of capturing full images of the animals for accurate analysis.

[0081] According to a further or alternative embodiment, a total area of a sidewall of the tunnel is substantially equal to a total area of the base portion of the conduit, with a margin of error of + / - 10%, preferably + / - 5%, more preferably + / - 4%, even more preferably + / - 3%, even more preferably + / - 2%, and even more preferably + / - 1%. Matching the total area of the tunnel's sidewall with that of the base portion of the conduit ensures that the image capturing units can utilize the maximum possible area for image capture. This design optimizes the use of available space for capturing images, thereby increasing the efficiency of the image capture process. The close match in areas ensures that the field of view provided by the conduits is well-aligned with the area through which the animals pass, minimizing any wasted or unmonitored space. By aligning the area of the base portion of the conduit with that of the tunnel's sidewall, the design ensures that the illumination within the tunnel and the image capture area are maximally congruent. This congruence ensures that the captured images are evenly illuminated and that the entire visible area is optimally used for image analysis. It reduces the likelihood of shadow areas or parts of the animal not being adequately captured due to mismatched areas, thus enhancing the accuracy of the analysis.

[0082] According to a further or alternative embodiment, the conduit comprises one or more mirrors arranged and configured to define an optical path from the image capturing unit to the tunnel by reflecting and directing light through the conduit. Mirrors allow the optical path to be extended and redirected within the conduit. This flexibility means that the image capturing device can be positioned in a manner that is optimal for the overall design of the device and operation, without being constrained by a direct line of sight to the tunnel. It enables a more compact and efficient design, where space within the device can be utilized more effectively. Preferably, the mirrors are made from a material that is resistant to the corrosive effects of salt water and capable of maintaining a high degree of reflectivity even when submerged for extended periods. In addition, the mirrors may be designed to be easily cleaned or replaced, thereby ensuring that they can consistently provide high-quality images over the lifespan of the device.

[0083] According to a further or alternative embodiment, at least one transparent wall of the tunnel comprises a coating, wherein the coating is chosen from a list of: barium sulfate, titanium dioxide, zinc oxide, magnesium oxide, calcium carbonate, silica, aluminum oxide or a combination thereof. Preferably at least two transparent walls of the tunnel comprises a coating, more preferably at least three transparent walls of the tunnel comprises a coating, more preferably each wall of the tunnel comprises a coating. Coatings like barium sulfate and titanium dioxide are known for their excellent light-reflective properties, which can help in diffusing light more evenly within the tunnel. This uniform light distribution is crucial for minimizing shadows and glare in the images captured, ensuring consistent quality across all observations. By applying these coatings, the clarity of images captured through the transparent walls can be significantly enhanced. Materials like zinc oxide and magnesium oxide can increase the transparency of the walls and reduce optical distortions, leading to sharper and more accurate images. Certain coatings, such as titanium dioxide and zinc oxide, offer protection against UV light. This can be particularly important in preventing damage to the device and the animals from prolonged exposure to UV rays, as well as in preserving the integrity of the materials used in the tunnel walls over time. Coatings like silica and calcium carbonate can provide anti-fouling properties, reducing the buildup of biological materials or other contaminants on the tunnel walls. This is especially valuable in aquatic environments or in long-term studies where cleanliness and clear visibility are paramount. Some of these coatings have the ability to reflect infrared light or insulate the tunnel, helping to regulate the temperature within the device. This can be crucial for maintaining a stable environment that does not stress or harm the animals during analysis. Materials like aluminum oxide and silica can enhance the chemical resistance of the tunnel walls, protecting them from corrosion or degradation due to exposure to harsh chemicals or cleaning agents. This ensures the longevity and durability of the device.

[0084] According to a further or alternative embodiment, at least one transparent wall of the tunnel comprises a coating, wherein the coating comprises at least 50 wt.% barium sulfate, preferably at least 60 wt.% barium sulfate, more preferably at least 70 wt.% barium sulfate, even more preferably at least 80 wt.% barium sulfate, even more preferably at least 90 wt.% barium sulfate, even more preferably at least 95 wt.% barium sulfate. Barium sulfate is chosen for its excellent scattering properties. This is particular advantageous because a uniform dispersion of light is desirable. Its high refractive index and low scattering coefficient make it ideal for scattering light without producing visible spots or distortions in the resulting images. Additionally, barium sulfate is chemically inert and has low toxicity, making it safe for use in environments where animals are present. These characteristics make barium sulfate a preferred choice for coatings aimed at achieving uniform light scattering without introducing visual artifacts or compromising image quality.

[0085] According to a further or alternative embodiment, the device comprises illumination means, wherein said illumination means are provided at or behind an upper and / or lower tunnel wall and positioned within the housing, wherein said illumination means are configured to provide illumination at said at least one section of the tunnel, said upper and / or lower tunnel wall being transparent. Preferably, the illumination means extends longitudinally within the tunnel, wherein the linear extent of the illumination means, measured from an initial point of emission to a terminal point of emission along a length of the tunnel, is at least 70% of the total length of the tunnel, preferably at least 75%, more preferably at least 80%, even more preferably at least 85%, even more preferably at least 90%, even more preferably at least 95%, even more preferably at least 98%.

[0086] According to a further or alternative embodiment, the device comprises illumination means, which extend laterally beyond the edges of the upper (and / or lower) tunnel wall, past at least one, preferably both, side wall. Preferably, this is provided over at least an additional 5% of the width of the upper tunnel wall per side, preferably at least 10%, more preferably at least 15%, 20% or even 25% up to 30%, 35%, 40%, 45% or 50%. This extension can in some embodiments be provided with a downward (for the upper tunnel wall, upward for the lower tunnel wall) curvature or slope, in order to illuminate the animals in the tunnel at least partly from the side, while minimally impacting the field of view, as the animals will typically reside at the midlevel.

[0087] In an embodiment, said illumination means are provided at or behind a portion of at least one side wall, and preferably both side walls. Preferably the illumination means cover at least 5% of a side wall, more preferably at least 10%, even more preferably at least 15%, even more preferably at least 20%, even more preferably at least 30%, even more preferably at least 40%, even more preferably at least 50%. According to a further or alternative embodiment, the device comprises illumination means, wherein said illumination means are provided at or behind a portion of at least one side wall and at or behind an upper and / or lower tunnel wall.

[0088] According to a further or alternative embodiment, the device comprises illumination means, wherein said illumination means are provided at or behind a portion of both side wall and at or behind an upper and / or lower tunnel wall. Positioning the illumination sources on multiple sides helps create a more evenly distributed light within the tunnel. This prevents shadows and dark spots that could otherwise interfere with the image quality and accuracy of the captured images.

[0089] According to a further or alternative embodiment, wherein the illumination means have a color temperature ranging from a minimum of 4000 Kelvin to a maximum of 8000 Kelvin. This ensures an optimal visibility for the image capturing units. The defined color temperature range contributes to the high quality of the images by ensuring that the illumination is neither too warm nor too cold. Too warm illumination could result in images with a yellowish hue, while too cold illumination could result in images with a bluish hue. Both of these scenarios could affect the accuracy of the image analysis, potentially leading to incorrect conclusions about the condition of the animal, and also a wrong classification the animal. The defined color temperature range ensures that the illumination is just right, resulting in images with accurate color representation. Furthermore, the selected color temperature range closely mimics natural daylight conditions, which is beneficial for accurately capturing the colors and details of the animals passing through the device. This color temperature range closely resembles natural daylight conditions can be appealing or familiar to the animals, encouraging them to move into the device more willingly. By mimicking natural lighting conditions, the illumination can create a welcoming environment for the animals, reducing potential reluctance or hesitation to enter the tunnel. This aspect enhances the efficiency of the device by facilitating the smooth passage of animals through the system, ultimately improving the effectiveness of the analysis and sorting process. Furthermore, this lighting helps to ensure that the images captured are true to life, facilitating more accurate analysis and sorting based on visual characteristics. Using illumination means within this color temperature range helps to minimize color distortion and ensure that the colors of the animals are represented accurately in the captured images. This is essential for tasks such as identifying markings, assessing health indicators, or categorizing species based on color patterns. The illumination means are preferably light emitting diodes (LED's). Alternatively, the illumination means are metal halide lamps, fluorescent tubes, natural light simulation systems or other customized lighting solutions.

[0090] Preferably, the illumination means have a color temperature of at least 4000 Kelvin, preferably at least 4500 Kelvin, more preferably at least 5000 Kelvin, even more preferably at least 5500 Kelvin, even more preferably at least 6000 Kelvin. Preferably, the illumination means have a color temperature of at most 8000 Kelvin, preferably at most 7500 Kelvin, more preferable at most 7000 Kelvin, even more preferable at most 6500 Kelvin.

[0091] According to a further or alternative embodiment, the device comprises an electrical cabinet, preferably positioned within the housing. The electrical cabinet serves as a centralized hub for controlling and managing the various electrical components of the device, including lighting, imaging units, sorting mechanisms, and any other electronic systems. This centralized control facilitates efficient operation and troubleshooting, streamlining maintenance tasks and ensuring smooth functionality.

[0092] According to a most preferred embodiment, the device for analyzing and sorting animals and preferably aquatic animals, comprises a housing; a tunnel extending through the housing, comprising tunnel walls, the tunnel being positioned within the housing and configured to guide an individual animal through the device the tunnel, the tunnel comprises: an inlet provided in a wall of the housing, defining a beginning of the tunnel, wherein the inlet is configured to introduce the individual animal into the tunnel and an outlet provided in a wall of the housing, defining an end of the tunnel, wherein the outlet is provided with one or more sorting means, the sorting means are configured to sort the individual animal; two or more image capturing units positioned within the housing configured to capture images of the tunnel, wherein each image capturing unit comprises an image capturing device to capture images of the tunnel; configured for capturing images of at least one section of the tunnel, wherein said image capturing units are provided laterally behind the tunnel walls on opposite lateral sides of the tunnel, said tunnel walls on the lateral sides being transparent; and illumination means, wherein said illumination means are provided at or behind an upper and / or lower tunnel wall and positioned within the housing, wherein said illumination means are configured to provide illumination at said at least one section of the tunnel, said upper and / or lower tunnel wall being transparent.

[0093] According to a further or alternative embodiment, the tunnel has in cross-section a width and / or height of at least 0.1 m, preferably at least 0.2 m, more preferably at least 0.3 m, more preferably at least 0.4 m, more preferably at least 0.5 m, even more preferably at least 0.6 m. The tunnel has a width and / or length of at most 2.0 m, preferably at most 1.5 m, more preferably at most 1.0 m, more preferably at most 0.9 m, more preferably at most 0.8 m, more preferably at most 0.7 m, even more preferably at most 0.6 m. Ideally, the cross-sectional shape of the tunnel is square. The minimum dimension ensures that the tunnel can accommodate a wide variety of aquatic animals. The maximum dimensions ensures that the animals have sufficient space to pass through the tunnel without excessive space that could complicate image capture or sorting accuracy. A device too large can be impractical for many potential settings, while too small a device could stress or harm the animals, affecting the ethical considerations and potentially the accuracy of the sorting process, and even dissuade the animals from entering. By limiting the maximal distance from the animal to the lateral tunnel walls (through which images are acquired), the medium therebetween is reduced and clarity is increased, which is especially relevant for instance in aquatic circumstances, where murky water could reduce visibility. Furthermore, by keeping the width and height limited, the animal is not able to, or strongly impeded, to turn back, or to move sideways, which would result in useless images. The dimensions are optimized for the image capturing units' field of view and focus, ensuring high-quality imaging for analysis. A controlled environment within these dimensions aids in reducing variables that could affect image quality, such as distance and angle to the subject.

[0094] According to a further or alternative embodiment, the tunnel has a total length of at least 0.5 m, preferably at least 1.0 m, more preferably at least 1.5 m, more preferably at least 2.0 m, even more preferably at least 2.5 m. The tunnel has a total length of at most 20 m, preferably at most 15 m, more preferably at most 10 m, more preferably at most 9.0 m, more preferably at most 8.0 m, more preferably at most 7.0 m, more preferably at most 6.0 m, more preferably at most 5.0 m, more preferably at most 4.0 m, even more preferably at most 3.0 m. The minimum length ensures that there is adequate space for the image capturing units to obtain a comprehensive series of images of the animal as it moves through the tunnel. This length provides enough time for the device to capture an image of the animal's features, which is crucial for accurate sorting based on size, species, health, or other criteria. Furthermore, the length of the tunnel is considered to minimize stress and discomfort for the animals as they pass through. A tunnel that's too short might not allow for natural movement, whereas one that is too long could increase the time the animal spends in a confined space, potentially leading to stress or behavioral changes that could affect the sorting accuracy. According to a further or alternative embodiment, the camera device is at a distance of at least 0.1 m, more preferably at least 0.2 m, preferably at least 0.4 m, more preferably at least 0.6 m, more preferably at least 0.8 m, more preferably at least 1.0 m, more preferably at least 1.2 m, even more preferably at least 1.4 m from the lateral sidewall of the tunnel. The camera device is at a distance of at most 5.0 m, preferably at most 4.0 m, more preferably at most 3.0 m, more preferably at most 2.0 m, more preferably at most 1.9 m, more preferably at most 1.8 m, more preferably at most 1.7 m, more preferably at most 1.6 m, even more preferably at most 1.5 m from the lateral sidewall of the tunnel. At these distances, the camera devices can achieve a wide field of view that covers the entire width and height of the tunnel, ensuring that the entire body of the animal is within the frame for comprehensive analysis. This is crucial for identifying specific features or conditions that are relevant to the sorting criteria. By positioning the cameras at this distance from the tunnel walls, potential reflections from the transparent tunnel walls that could distort the images are reduced. This helps in obtaining clear and usable images for analysis. Furthermore, this ensures that the cameras can focus clearly on the subjects passing through the tunnel, capturing high-quality images essential for accurate analysis and sorting. The distance helps in maintaining a sharp focus on the animals while minimizing distortion.

[0095] According to a further or alternative embodiment, the device has a total length, measured from the entrance of the inlet to the exit of the outlet of at a distance of at least 0.5 m, preferably at least 1.0 m, more preferably at least 1.5 m, more preferably at least 2.0 m, more preferably at least 2.5 m, more preferably at least 3.0 m, more preferably at least 3.5 m, more preferably at least 4.0 m, more preferably at least 4.5 m, more preferably at least 5.0 m, even more preferably at least 5.5 m. The device has a total length of at most 20 m, preferably at most 15 m, more preferably at most 10 m, more preferably at most 9.5 m, more preferably at most 9.0 m, more preferably at most 8.5 m, more preferably at most 8.0 m, more preferably at most 7.5 m, more preferably at most 7.0 m, more preferably at most 6.5 m, even more preferably at most 6.0 m. This length allows for a gradual and less stressful sorting process for the animals. With more space available, sorting mechanisms can be designed to gently guide the animals to their designated paths after analysis, reducing the potential for stress or injury. This length also offers flexibility in incorporating additional features or technologies into the device, such as multiple sorting mechanisms for different criteria or additional sensors for collecting various types of data. This will make the device more versatile and capable of handling a broader range of sorting tasks. According to a further or alternative embodiment, the device has a total width, measured at its widest point, perpendicular to the length of the tunnel, of at least 0.5 m, preferably at least 1.0 m, more preferably at least 1.5 m, more preferably at least 2.0 m, more preferably at least 2.5 m, more preferably at least 3.0 m, more preferably at least 3.5 m, more preferably at least 4.0 m, more preferably at least 4.5 m, even more preferably at least 5.0 m. The device has a total width of at of at most 20 m, preferably at most 15 m, more preferably at most 10 m, more preferably at most 9.5 m, more preferably at most 9.0 m, more preferably at most 8.5 m, more preferably at most 8.0 m, more preferably at most 7.5 m, more preferably at most 7.0 m, more preferably at most 6.5 m, more preferably at most 6.0 m, even more preferably at most 5.5 m. This width provides sufficient space to house the tunnel, image capturing units, sorting mechanisms, and illumination devices, along with any necessary supporting infrastructure such as conduits for cables and water pipes. This ensures that all components can operate efficiently without being cramped, which could otherwise impact their performance or maintenance accessibility. This optimal width contributes to the overall stability and structural integrity of the device, especially if it's intended to handle large volumes of water and the dynamic loads associated with the movement of aquatic animals and the operation of sorting mechanisms.

[0096] According to a further or alternative embodiment, the device employs the Venturi effect. Preferably, the tunnel itself serves as the restriction point. Alternatively, there may be a constriction in the tunnel. The Venturi effect is a fluid dynamics principle that describes how the velocity of a fluid increases as it passes through a constricted section of a pipe or tube, and as a result, the pressure within that constricted section decreases. Due to the smaller cross section of the tunnel, the fluid's velocity increases in order to maintain the continuity of flow (mass conservation). According to Bernoulli's principle, as the velocity of a fluid increases, its static pressure decreases. This pressure drop is key to the Venturi effect. By making the tunnel the restrictive section itself, the entire length of the tunnel can be used to manage fluid dynamics efficiently. This consistent control over water flow along the tunnel ensures a steady increase in water velocity, which can be crucial for directing fish into the tunnel. Fish are naturally inclined to swim against the flow of water. As the entire tunnel acts as a constriction, the increase in water velocity beginning from the tunnel entrance encourages fish to enter and move through it. This instinctive behavior can be exploited to guide fish into the tunnel without the need for external force or direction. With the tunnel serving as the constriction, the pressure decreases uniformly along its length. This pressure gradient can create a gentle pulling effect on the fish, helping to draw them into the tunnel. It's a smooth, consistent draw that mimics natural water currents, which is less stressful and more conducive to fish movement. The uniform water flow and velocity throughout the tunnel facilitate consistent conditions for monitoring and analysis. Image capturing units and sensors can perform optimally as the environmental conditions within the tunnel remain stable and predictable. This consistency is key to achieving high accuracy in data collection and fish sorting. Using the tunnel itself as the restriction reduces the need for sudden changes in the environment, which can often lead to stress and potential injury in aquatic animals. The gradual and natural induction into the tunnel ensures that fish are less likely to be harmed, making the process safer and more humane. Furthermore, there's no need for additional mechanical components to create water movement, reducing energy consumption and simplifying the overall design of the device.

[0097] According to a further or alternative embodiment, the device comprises a pump to generate water circulation, preferably forming a flowing stream within the tunnel. The pump enables precise control over the speed and direction of water flow within the tunnel. This control is crucial for maintaining consistent conditions that are suitable for the particular needs of different aquatic species. A directed stream of water can more effectively guide fish into the tunnel. This can be particularly useful for passive or smaller species that might not actively swim into the tunnel without encouragement.

[0098] In a second aspect, the invention relates to a use of a device according to the first aspect of the invention for analyzing and sorting animals and preferably aquatic animals. This device is superior to use in fish farms to monitor the growth of the fish and to sort them from time to time according to their level of development according to appropriate selection criteria. Here it is disadvantageous in the known methods that the fish must be taken from the fish tank and measured either mechanically or by hand and with them no individual detection of the growth process takes place, because the resulting properties are not identifiable with the identity of the individual individuals. In what follows, the invention is described using non-limiting figures illustrating the invention, which are not intended or to be interpreted to limit the scope of the invention.

[0099] DESCRIPTION OF FIGURES

[0100] Figure 1 shows a perspective view of the device fully enclosed by the housing (9). The housing (9) encloses the tunnel (1) and its associated components, offering physical protection and a controlled environment to optimize the function of the image capturing units and devices. The housing (9) has a trapezoidal or tapered profile. It is wider around the tunnel (1) and narrows towards the outside. The housing (9) is made of turbulent thermoplastic material like polypropylene. It may form a hydrodynamic cover to reduce water resistance avoids turbulence in the water, make sure fish cannot get injured. And protect the equipment on the inside. The outer shell can be easily removed to allow access to all components.

[0101] Figures 2, 3, 4, and 5 each show a device showcasing the same embodiment of the invention. Central to the device is the tunnel (1), a transparent channel running through the housing (9), constructed from transparent materials such as polymethylmethacrylate. This transparency is crucial, as it guarantees optimal visibility and light transmission properties, essential for the effectiveness of the image capturing device. The tunnel (1) is designed to guide an individual animal smoothly from the inlet (2) to the outlet (3), optimizing the analyzing and sorting process.

[0102] The inlet (2) and outlet (3) serve as the entry and exit points of the tunnel (1). The inlet (2) is equipped with a controllably adjustable diaphragm mechanism (13), designed to modulate the size of the entry point to accommodate animals of varying sizes, facilitating a stress-minimized entry. The outlet (3) is typically paired with one or more sorting mechanisms (12) like pneumatic diverters or mechanical gates, enables the sorted egress of the subjects based on prior analysis.

[0103] Surrounding the tunnel (1) are the transparent walls (4,5) of the tunnel (1). The upper and lower sidewalls (4) define the horizontal limits of the tunnel (1) and the lateral sidewalls (5) define the vertical limits of the tunnel (1). The lateral sidewalls (4,5) connect the top and bottom walls (4) to complete the tunnel's (1) form and are also vital for providing the necessary structural support. These walls (4,5) not only provide the structural framework for the tunnel (1) but also ensure its integrity and durability. The transparency of these walls (4,5) is enhanced by a coating such as titanium dioxide or zinc oxide, which improve image clarity and prevent condensation.

[0104] Positioned strategically within the housing on either side of the tunnel (1) are two image capturing units (6), each comprising an image capturing device (8) and a pyramidal conduit (7). These image capturing units (6) are symmetrically placed, ensuring equitable illumination and image capture from multiple angles. Each conduit (7) may be filled with media like water or gases, and equipped with mirrors (15), optimize the optical path to the tunnel, enhancing image quality.

[0105] Illumination means (10) are provided at the upper and lower walls (4), employing high-intensity LEDs to cast uniform, controlled light across the tunnel (1). This setup minimizes shadows and glare, with a color temperature around 6000 Kelvin, ensuring the light is optimally scattered and diffused for premium image capture conditions.

[0106] A sealed electrical cabinet (15) is placed on top upper illumination means (10). It may contain the microprocessor for the steering of the LEDs, the image capturing devices and the network hub for the data cables. In this way only one network cable and power cable are connecting with the devices on the ground outside for example a fishtank.

[0107] Furthermore, the device's internal structure may be reinforced by a frame (11), crafted from materials like stainless steel or aluminum. This frame (11) not only supports the internal components but may also support the housing itself, ensuring the device's robustness and durability.

[0108] Figures 6 and 7 illustrate different configurations for the sorting mechanism employed by the device. The sorting mechanism can incorporate various designs, including but not limited to, a valve-based sorter depicted in Figure 6, and a rotating diverter showcased in Figure 7. These examples underscore the versatility of the device, highlighting that it is capable of integrating a wide range of sorting mechanisms to suit specific needs. The inclusion of alternative sorting means further demonstrates the adaptability and potential customization of the device to accommodate different operational requirements.

[0109] Figure 8 shows a perspective view of a device according to another embodiment of the present invention. A distinctive feature highlighted in this figure is the strategic incorporation of mirrors (15) within the conduit (7) of the image capturing unit (6). By employing mirrors (15) to redirect the image capturing device's line of sight, this design not only compacts the device's form factor but also significantly diminishes its buoyancy. Specifically, the mirrors (15) are utilized to bend the field of view by approximately 180 degrees, enabling the placement of the image capturing device (8) directly above the tunnel (1). This configuration effectively minimizes the measurements of the device, mostly decreasing its overall width. Furthermore, curved mirrors (15) can play a crucial role in shortening the optical path between the animal and the image capturing device (8). This adjustment not only brings the animal into closer view but also contributes to a more streamlined and less obtrusive device design. Such an arrangement ensures a reduction in the physical dimensions of the device, enhancing its efficiency and integration into various environments without compromising functionality.

[0110] This embodiment contemplates a device that maximizes image clarity and operational efficiency for the purpose of analyzing and sorting animals, optimizing it specifically for aquatic life. The system's design ensures that the transparent walls of the tunnel, which may include coatings for enhanced image capture, along with the illumination means and image capturing units, are coordinated to produce images of high fidelity, essential for the precise sorting and analysis required in such applications.

[0111] The reference signs in the figures are:

[0112] 1 = Tunnel

[0113] 2 = Inlet

[0114] 3 = Outlet

[0115] 4 = Upper / lower sidewall

[0116] 5 = Lateral side wall

[0117] 6 = Image capturing unit

[0118] 7 = Conduit

[0119] 8 = Image capturing device

[0120] 9 = Housing

[0121] 10 = Illumination means

[0122] 11 = frame

[0123] 12 = sorting mean

[0124] 13 = diaphragm mechanism

[0125] 14 = electrical cabinet

[0126] 15 = mirror

[0127] However, it is obvious that the invention is not limited to the embodiments shown in the figures.

Claims

CLAIMS1. A device for analyzing and sorting animals and preferably aquatic animals, comprising: a housing; a tunnel extending through the housing, comprising tunnel walls, the tunnel being positioned within the housing and configured to guide an individual animal through the device the tunnel, the tunnel comprises: o an inlet provided in a wall of the housing, defining a beginning of the tunnel, wherein the inlet is configured to introduce the individual animal into the tunnel; o an outlet provided in a wall of the housing, defining an end of the tunnel, wherein the outlet is provided with one or more sorting means, the sorting means are configured to sort the individual animal;- two or more image capturing units positioned within the housing configured for capturing images of the tunnel, wherein each image capturing unit comprises an image capturing device configured for capturing images of at least one section of the tunnel, wherein said image capturing units are provided laterally behind the tunnel walls on opposite lateral sides of the tunnel, said tunnel walls on the lateral sides being transparent; and- illumination means, wherein said illumination means are provided at or behind an upper and / or lower tunnel wall and positioned within the housing, wherein said illumination means are configured to provide illumination at said at least one section of the tunnel, said upper and / or lower tunnel wall being transparent.

2. Device according to claim 1, wherein the image capturing units are substantially symmetrically provided at the opposite lateral sides of the tunnel.

3. Device according to claim 1 or 2, wherein each image capturing unit is positioned and oriented for capturing images of a predefined zone in the tunnel, wherein each image capturing unit comprises a closed conduit extending from the image capturing device on each lateral side of the tunnel to the wall on the lateral side of the tunnel, through which conduit the image capturing device observes the tunnel, wherein the conduit comprises a base portion provided on the wall on the lateral side of the tunnel and tapers towards the image capturing device, the conduit preferably being pyramidal in shape.

4. Device according to claim 3, wherein each conduit is filled with a medium, wherein the medium is chosen from a list of: water, demineralized water, oxygen gas, nitrogen gas, argon gas, helium gas, xenon gas, sulfur hexafluoride or combinations thereof.

5. Device according to one claim 3 or 4, wherein the tunnel comprises a total length extending from a beginning of the inlet to the an end of the outlet, wherein the base portion of the conduit of the image capturing unit has a width measured from one edge of the base portion of the conduit to an opposite edge along the length of the tunnel, where the width of the base portion of the conduit is at least 80% of the total length the tunnel.

6. Device according to claim 5, wherein the illumination means extends longitudinally within the tunnel, wherein the linear extent of the illumination means, measured from an initial point of emission to a terminal point of emission along a length of the tunnel, is at least 70% of the total length of the tunnel.

7. Device according to one of the previous claims 3 to 6, wherein the tunnel comprises a total height measured from the upper to lower wall of the tunnel, wherein the base portion of the conduit of the image capturing unit has a height measured from one edge of the base portion of the conduit to the opposite edge and substantially perpendicular to the length of the base portion of the conduit, wherein the height of the base portion of the conduit is at least 80% of the total height of the of the tunnel.

8. Device according to one of the previous claims 3 to 7, wherein the conduit comprises one or more mirrors arranged and configured to define an optical path from the image capturing unit to the tunnel by reflecting and directing light through the conduit.

9. Device according to one of the previous claims 1 to 8, wherein the transparent tunnel walls comprise a material that is chosen from a list of: polymethylmethacrylate, polycarbonate, polyethylene terephthalate glycol, polyvinyl chloride, cyclic olefin copolymer, glass or combinations thereof.

10. Device according to one of the previous claims 1 to 9, wherein the one or more sorting means are chosen from a list of: a diversion valve, a pneumatic diverter,a waterflow diverter, a mechanical gate, a rotating diverter, an electromechanical sorter or combinations thereof.

11. Device according to one of the previous claims 1 to 10, wherein the inlet comprises a controllably adjustable diaphragm mechanism, configured to adjust a size of an inlet opening of the inlet, preferably wherein the diaphragm is inflatable.

12. Device according to one of the previous claims 1 to 11, wherein at least one transparent wall of the tunnel comprises a coating, wherein the coating is chosen from a list of: barium sulfate, titanium dioxide, zinc oxide, magnesium oxide, calcium carbonate, silica, aluminum oxide or a combination thereof.

13. Device according to one of the previous claims 1 to 12, wherein the illumination means have a color temperature ranging from a minimum of 4000 Kelvin to a maximum of 8000 Kelvin.

14. Device according to one of the previous claims 1 to 13, wherein the tunnel walls on the lateral sides of the tunnel are planar.

15. Use of a device according to any of the previous claims 1-14 for analyzing and sorting animals and preferably aquatic animals.

Images