A fish feature acquisition device

Abstract

The utility model discloses a fish feature collection device relates to small and medium -sized fish disease form feature detection technical field, mainly includes light -proof casing, collection camera, containing piece and lamp plate, the light -proof casing includes switch door and contains the shell, the lamp plate covers in containing shell inboard circumference, the collection camera sets up in containing shell and can photograph containing piece, containing piece is transparent material, is used for containing the fish of waiting for measuring. The fish feature collection device provided by the utility model is convenient to carry, and the measurement accuracy is higher.

Description

Technical Field

[0001] This utility model relates to the field of disease morphological characteristic detection technology for small and medium-sized fish, and in particular to a fish characteristic collection device. Background Technology

[0002] Currently, the imaging equipment used in the field of recording fish disease morphology has significant limitations. These devices generally rely on darkroom environments for operation, which not only strictly restricts their use to fixed indoor spaces but also results in a bulky and complex imaging system due to the required supporting facilities and enclosed structure of the darkroom. Consequently, in field scenarios such as fishery resource surveys and aquaculture pond inspections, these devices cannot be flexibly carried and deployed, greatly hindering the real-time recording and analysis of fish disease morphology in their natural state. When encountering sudden fish disease outbreaks, these limitations become even more pronounced, often delaying the optimal time for disease assessment and control decisions due to the inability to promptly arrive at the scene to obtain firsthand image data.

[0003] Meanwhile, the measurement of key indicators in diseased fish still relies primarily on manual operation, a method inherently prone to errors. For example, measuring the area of ​​ulceration often involves estimation using only the naked eye and simple tools like rulers and grid paper. This method is susceptible to subjective judgment and significant deviations due to the irregularity of the ulcer edges. For indicators requiring precise geometric calculations, such as spinal curvature, manual measurement struggles to guarantee accuracy. Differences in measurement standards and calculation methods used by different measurers can lead to significant fluctuations in results for the same fish. Furthermore, point light sources result in uneven illumination, causing partial image blurring and affecting image quality. This hinders clear recording and analysis of changes in the external morphology of diseased fish, making the tracking of the disease process inaccurate and incomplete. Therefore, a fish characteristic acquisition device is urgently needed to address these technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a fish feature acquisition device to solve the problems existing in the prior art, which is easy to carry and has high measurement accuracy.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a fish feature collection device, including a light-proof housing, a collection camera, a container and a light panel. The light-proof housing includes a switch door and a container. The light panel covers the inner circumferential surface of the container. The collection camera is set inside the container and can capture images of the container. The container is made of transparent material and is used to hold the fish to be tested.

[0007] In some embodiments, the receiving member includes a pull-out cavity and a fixed outer shell, both of which are rectangular structures. The fixed outer shell is fixedly disposed within the receiving shell. The pull-out cavity and the fixed outer shell are designed separately, and the pull-out cavity can slide within the fixed outer shell.

[0008] In some embodiments, the length of the pull-out cavity is 5-15cm, the width is 2-4cm, and the height is 3-5cm.

[0009] In some embodiments, a light diffusion film is also included, which is fixedly connected to the inner wall of the housing and located inside the lamp panel and arranged parallel to the lamp panel.

[0010] In some embodiments, a support frame is also included, which is fixedly disposed within the housing, and the housing is detachably disposed on the support frame.

[0011] In some embodiments, at least two acquisition cameras are provided, wherein a first acquisition camera is mounted on a first camera bracket, the first camera bracket is vertically and fixedly mounted on the bottom surface of the housing, and the first camera bracket is located between the support frame and the light diffusion film; a second acquisition camera is mounted on a second camera bracket, the second camera bracket is horizontally mounted on the bottom surface of the housing and extends in the width direction of the housing, and the second acquisition camera is located below the support frame; and all acquisition cameras are electrically connected to a computer.

[0012] In some embodiments, the first acquisition camera is slidably mounted on the first camera bracket and is capable of sliding along the height direction of the first camera bracket.

[0013] In some embodiments, the light panel is modularly configured, comprising multiple light panel elements, which are assembled to form the light panel.

[0014] In some embodiments, a transparent scale is attached to both the length and width directions of the outer side of the pull-out cavity.

[0015] In some embodiments, the light diffusion film is made of polyethylene terephthalate.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a fish feature acquisition device that creates a closed imaging environment through its own light-proof housing, eliminating the need for additional complex facilities. The overall structure is compact, with highly integrated components, significantly reducing weight and volume, making it easy for researchers or aquaculture practitioners to carry. It can easily handle scenarios such as field fisheries surveys and pond-based on-site testing, completely breaking the limitation of traditional equipment that can only be used indoors. The transparent housing provides stable placement of the fish to be tested, preventing interference from fish movement. The light panel on the inner periphery of the light-proof housing provides uniform and stable illumination, eliminating imaging deviations caused by changes in external light. Combined with the acquisition camera, it can acquire clear and consistent images of the fish. Based on the image data from the acquisition camera, and combined with subsequent image processing technology, it can accurately measure characteristic indicators such as ulcer area and spinal curvature, effectively avoiding subjective errors in manual measurement and making the data more scientific and reliable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the fish feature acquisition device in some embodiments of this utility model;

[0020] Figure 2 for Figure 1 A structural diagram omitting the light-blocking casing;

[0021] Figure 3 for Figure 2 A structural diagram omitting the light panel;

[0022] Figure 4 for Figure 3 A structural diagram omitting the light diffusion film;

[0023] Figure 5 for Figure 4 The structural diagram of the data acquisition camera is omitted.

[0024] In the diagram: 1-Housing shell; 2-Opening and closing door; 3-First acquisition camera; 4-Camera mounting plate; 5-Light board; 6-First camera bracket; 7-Support frame; 8-Housing component; 81-Pull-out cavity; 82-Fixed outer shell; 9-Second acquisition camera; 10-Second camera bracket; 11-Acrylic load-bearing plate; 12-Light diffusion film. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a fish feature acquisition device to solve the problems existing in the prior art, which is easy to carry and has high measurement accuracy.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-5 As shown, this utility model provides a fish feature acquisition device, including a light-proof housing, an acquisition camera, a receiving component 8, and a light panel 5. The light-proof housing includes a switch door 2 and a receiving shell 1. The light panel 5 covers the inner circumference of the receiving shell 1, preferably covering three sides: the two sides adjacent to the switch door 2 and the top surface of the receiving shell 1. The acquisition camera is set inside the receiving shell 1 and can capture images of the receiving component 8. The receiving component 8 is made of transparent material and is used to hold the fish to be tested. The light-proof housing itself creates a closed imaging environment, eliminating the need for additional complex facilities. The overall structure is compact, with high integration of components, significantly reducing weight and volume, making it easy for researchers or aquaculture practitioners to carry. It can easily handle scenarios such as field fishery surveys and pond on-site testing, completely breaking the limitation of traditional equipment that can only be used in fixed indoor spaces. The transparent receiving component 8 can stably hold the fish to be tested, avoiding interference from the measurement caused by the fish moving around. The light panel 5 on the inner circumference of the light-proof housing provides uniform and stable illumination, eliminating imaging deviations caused by changes in external light. Combined with the acquisition camera, it can obtain clear and consistent images of the fish. Based on the image data acquired by the camera, combined with subsequent image processing technology, it is possible to accurately measure characteristic indicators such as ulcer area and spinal curvature, effectively avoiding subjective errors in manual measurement and making the data more scientific and reliable.

[0029] It should be noted that the light-blocking shell is made of polycarbonate (PC), which is coated or film-coated to make it opaque. Preferably, the polycarbonate is first formed into an outer shell, and then a black, thickened hard shell is covered on the outer layer. The opening and closing door 2 is preferably a side-opening pull-out door.

[0030] In some embodiments, the receiving component 8 includes a pull-out cavity 81 and a fixed outer shell 82. Both the pull-out cavity 81 and the fixed outer shell 82 are rectangular structures. The fixed outer shell 82 is fixedly disposed within the receiving shell 1. The pull-out cavity 81 and the fixed outer shell 82 are designed separately, and the pull-out cavity 81 can slide within the fixed outer shell 82. The pull-out cavity 81 is a rectangular structure and has no front or back, meaning that both ends of the pull-out cavity 81 can be inserted into the fixed outer shell 82. When the number of acquisition cameras is small, such as only one side camera and one bottom camera, after the acquisition camera has acquired one side and bottom of the fish under test by inserting the pull-out cavity 81 into the fixed outer shell 82, the pull-out cavity 81 needs to be pulled out, its direction changed, and then inserted back into the fixed outer shell 82 so that the acquisition camera can acquire the other side of the fish under test. By simply changing the direction of the pull-out cavity 81, the two sides of the fish can be acquired separately without increasing the number of cameras. This satisfies the acquisition needs of multi-dimensional features of the fish (such as ulceration on both sides, symmetrical part morphology, etc.) while controlling costs. Both the pull-out cavity 81 and the fixed outer shell 82 are square structures, which ensure precise positioning during sliding fit. This ensures that the relative position and posture of the fish in the receiving part 8 remain stable no matter which end the pull-out cavity 81 is inserted from, avoiding displacement of the fish due to direction changes. It also ensures the consistency of the two acquired images in terms of coordinate system and scale, providing a reliable foundation for subsequent image processing and feature measurement (such as comparison of symmetrical parts and size calculation).

[0031] In some embodiments, the length of the pull-out cavity 81 is 5-15cm, the width is 2-4cm, and the height is 3-5cm. The size of the pull-out cavity 81 is matched with the size of small to medium-sized fish, ensuring that the fish cannot swim or turn around freely after being placed in the pull-out cavity 81. The size matching the body size of small to medium-sized fish provides appropriate constraint after the fish is placed in, preventing it from swimming, turning around, or rolling over freely. This ensures that the fish's posture is consistent when the camera is capturing images, reducing problems such as image blurring and angular deviation caused by movement, and providing clear and standardized raw data for subsequent feature measurements (such as body length and ulcer location). In conjunction with the structure of the pull-out cavity 81, which has no front or back and can be inserted into the fixed outer shell 82 in both directions, the constrained fish will not change its relative position due to movement during the pulling and reversing process, ensuring that the images captured twice (such as from both sides) remain consistent in the spatial coordinate system, facilitating symmetrical feature comparison and size calibration in subsequent image processing.

[0032] In some embodiments, the fish feature acquisition device further includes a light diffusion film 12, which is fixedly connected to the inner wall of the housing 1 and located inside the lamp plate 5 and parallel to the lamp plate 5. The light diffusion film 12 can scatter and homogenize the light emitted by the lamp plate 5, avoiding problems such as light spots and light-dark boundaries formed by direct illumination of the lamp beads, making the light inside the light-shielding housing softer and more evenly distributed, ensuring that all parts of the fish surface are illuminated evenly, and preventing the loss of image details (such as blurred edges of ulcers and unclear scale textures) due to local over-brightness or under-brightness, thus providing a clearer image basis for subsequent feature measurements (such as ulcer area calculation and spine contour extraction). When the transparent housing 8 (pull-out cavity 81, fixed housing 82) is directly exposed to strong light, it is prone to specular reflection, interfering with the integrity of the fish image. The light diffusion film 12 softens the light, reduces the intensity of light reflection on the transparent material surface, avoids reflective areas from obscuring fish features, and ensures that the acquisition camera can capture a more realistic and undisturbed fish morphology.

[0033] In some embodiments, the fish feature acquisition device further includes a support frame 7, which is also made of transparent material. The support frame 7 is fixedly installed inside the housing 1, and the housing 8 is detachably installed on the support frame 7. At least two acquisition cameras are provided, wherein the first acquisition camera 3 is installed on the first camera bracket 6, which is vertically and fixedly installed on the bottom surface of the housing 1, and the first camera bracket 6 is located inside the light diffusion film 12, that is, between the support frame 7 and the light diffusion film 12. The second acquisition camera 9 is installed on the second camera bracket 10, which is horizontally installed on the bottom surface of the housing 1 and extends in the width direction of the housing 1. The second acquisition camera 9 is located below the support frame 7. All acquisition cameras are electrically connected to a computer. Specifically, it also includes a transparent acrylic support plate 11, which is fixedly installed inside the housing 1, with a certain distance between the acrylic support plate 11 and the bottom surface of the housing 1. The second camera is fixedly installed between the acrylic support plate 11 and the bottom surface of the housing 1, and the camera head of the second camera can pass through the acrylic support plate 11. The transparent support frame 7 provides an installation base for the housing 8, ensuring that the housing 8 will not shake or shift during operations such as pulling, reversing, etc., further ensuring the stability of the fish's position within the imaging area. The acrylic support plate 11 not only has good load-bearing performance, stably supporting the support frame 7, the housing 8, and the fish, but its fixed installation method also creates a stable installation environment for the second acquisition camera 9, avoiding shooting angle deviations caused by equipment vibration, and providing structural protection for accurately acquiring the fish's underside features (such as jaw shape and pelvic fin health status). The configuration of at least two acquisition cameras forms a three-dimensional imaging system: the first acquisition camera 3 on the side can capture the side features of the fish (such as the direction of the lateral line and the condition of lateral ulceration), while the second acquisition camera 9 at the bottom can clearly capture the details of the fish's underside (such as the angle of the eyeballs and the outline of the abdomen). The multi-directional acquisition mode can acquire image data of the fish in multiple dimensions without having to adjust the position of the fish multiple times. In particular, with the bidirectional pull-out design of the housing 8, it can efficiently complete the comprehensive feature recording of the sides and bottom of the fish, improving the completeness and efficiency of feature acquisition.

[0034] In some embodiments, the first acquisition camera 3 is slidably mounted on the first camera bracket 6 and can slide along the height direction of the first camera bracket 6. Specifically, it also includes a camera fixing plate 4, on which the first acquisition camera 3 is fixedly mounted. The camera fixing plate 4 is slidably connected to the first camera bracket 6. Further, an electric slide rail can be used, which is vertically and fixedly mounted at the bottom of the receiving shell 1. The camera fixing plate 4 is fixedly connected to the slider. Since the size of the small and medium-sized fish to be tested varies (such as different body lengths and heights), the height of the first acquisition camera 3 can be adjusted by sliding to ensure that the lens is always aimed at the key feature areas on the side of the fish (such as the location of ulcers, the midpoint of the lateral line, etc.). For example, for taller fish, the camera can be raised to capture the entire side view of the fish; for shorter fish, the camera height can be lowered to focus on key features, avoiding some features from exceeding the shooting range or the image ratio being unbalanced due to a fixed angle.

[0035] In some embodiments, the lamp panel 5 is modularly configured, comprising multiple lamp panel 5 elements, which are assembled to form the lamp panel 5. This modular design allows for flexible adjustment of the overall size of the lamp panel 5 according to the dimensions of the housing 1. By increasing or decreasing the number of lamp panel 5 elements, it can accommodate light-blocking housings of different volumes, eliminating the need to design a separate complete lamp panel 5 for each device. If a single lamp panel 5 element malfunctions (e.g., a damaged LED or a circuit fault), the entire lamp panel 5 does not need to be replaced; only the faulty element needs to be replaced. The illumination area and intensity can be flexibly adjusted by controlling the switching or brightness of different lamp panel 5 elements.

[0036] In some embodiments, transparent scales are attached to the outer length and width directions of the pull-out cavity 81. The transparent scales move synchronously with the pull-out cavity 81, and when the camera captures images of the fish, the scales appear in the frame as a ruler. During subsequent image processing, the fish image can be proportionally calibrated based on the actual scale markings (e.g., millimeters, centimeters), accurately converting pixel dimensions into actual physical dimensions. This ensures the accuracy of measurements of features such as body length, body width, and ulcer diameter, avoiding proportional errors caused by differences in shooting distance and angle.

[0037] In some embodiments, the light diffusion film 12 is made of polyethylene terephthalate (PET) and is a rigid material. It is fixedly connected to the top of the acrylic load-bearing plate 11. Moreover, the PET material has good waterproof properties, which can prevent water vapor penetration that could cause the film to become moldy, reduce light transmittance, or affect the performance of electronic components such as the light panel 5 and the acquisition camera due to moisture.

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fish feature acquisition device, characterized in that: The device includes a light-blocking housing, a camera, a container, and a light panel. The light-blocking housing includes a door and a container. The light panel covers the inner circumference of the container. The camera is located inside the container and can capture images of the container. The container is made of transparent material and is used to hold the fish to be tested.

2. The fish feature acquisition device according to claim 1, characterized in that: The receiving component includes a pull-out cavity and a fixed outer shell. Both the pull-out cavity and the fixed outer shell are rectangular structures. The fixed outer shell is fixedly disposed inside the receiving shell. The pull-out cavity and the fixed outer shell are designed separately, and the pull-out cavity can slide inside the fixed outer shell.

3. The fish feature acquisition device according to claim 2, characterized in that: The length of the pull-out cavity is 5-15cm, the width is 2-4cm, and the height is 3-5cm.

4. The fish feature acquisition device according to claim 2, characterized in that: It also includes a light diffusion film, which is fixedly connected to the inner wall of the housing and located inside the lamp panel and parallel to the lamp panel.

5. The fish feature acquisition device according to claim 4, characterized in that: It also includes a support frame, which is fixedly disposed within the housing, and the housing component is detachably disposed on the support frame.

6. The fish feature acquisition device according to claim 5, characterized in that: At least two acquisition cameras are provided. The first acquisition camera is mounted on a first camera bracket, which is vertically and fixedly mounted on the bottom surface of the housing and located between the support frame and the light diffusion film. The second acquisition camera is mounted on a second camera bracket, which is horizontally mounted on the bottom surface of the housing and extends in the width direction of the housing and is located below the support frame. All acquisition cameras are electrically connected to a computer.

7. The fish feature acquisition device according to claim 6, characterized in that: The first acquisition camera is slidably mounted on the first camera bracket and can slide along the height direction of the first camera bracket.

8. The fish feature acquisition device according to claim 1, characterized in that: The light panel is modularly configured, comprising multiple light panel elements, which are assembled to form the light panel.

9. The fish feature acquisition device according to claim 2, characterized in that: Transparent scales are attached to the outer side of the pull-out cavity in both the length and width directions.

10. The fish feature acquisition device according to claim 4, characterized in that: The light diffusion film is made of polyethylene terephthalate.

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