Human ear fixing device and human ear image acquisition system

Abstract

The utility model provides a human ear fixing device and a human ear image acquisition system, and relates to the technical field of forensic science / physical evidence identification. The human ear image acquisition system comprises a human ear fixing device, an image acquisition device and an image processing device. When the human ear image is acquired, after the annular placement hole in the fixing plate of the human ear fixing device sleeves the target human ear, the target image of the target human ear is acquired through the image acquisition device and is transmitted to the image processing device, and the image processing device is used for carrying out standardized processing and storage on the target image, so that the quality of the human ear image is improved.

Description

Technical Field

[0001] This application relates to the field of forensic science / evidence identification technology, and in particular to a human ear fixation device and a human ear image acquisition system. Background Technology

[0002] Currently, ear-based identification technology plays a significant role in forensic science and forensic evidence identification. Therefore, high-quality acquisition of ear images is crucial.

[0003] In existing technical solutions, images of the human ear are usually captured by having the subject stand, sit, or lie on their side, and the imaging device is either handheld by the person capturing the image or fixed using a tripod.

[0004] However, the ear images acquired by the above-mentioned technical solutions are of low quality, which can easily affect the accuracy of subsequent recognition and identification. Utility Model Content

[0005] This application provides an ear fixation device and an ear image acquisition system to solve the problem of poor ear image quality in the prior art.

[0006] In a first aspect, this application provides a human ear fixation device, the fixation device comprising:

[0007] Fixing plate;

[0008] The fixing plate is provided with an annular mounting hole for placing a human ear; wherein, when acquiring an image of a human ear, the annular mounting hole is fitted behind the target human ear to fix the target human ear and block other obstacles.

[0009] In one possible design of the first aspect, an annular reference frame is provided around the annular mounting hole, and the annular reference frame is a different color from the fixing plate.

[0010] In one possible design of the first aspect, the annular reference frame is provided with two calibration points located on the same central axis of the annular mounting hole, the two calibration points being used to adjust the position of the target ear.

[0011] In one possible design of the first aspect, the annular mounting hole is located at the center of the fixing plate.

[0012] In one possible design of the first aspect, the diameter of the annular mounting hole ranges from 3 cm to 7 cm.

[0013] In one possible design of the first aspect, the ear fixation device further includes:

[0014] A supporting structure, wherein the fixing plate is fixed above the supporting structure.

[0015] In one possible design of the first aspect, the support structure is any of the following: a tripod, a fixing clamp, or a support rod.

[0016] In one possible design of the first aspect, the fixing plate is made of cardboard, resin, or plastic.

[0017] In one possible design of the first aspect, the outer contour of the fixing plate is circular, elliptical, square, or rectangular.

[0018] Secondly, this application provides a human ear image acquisition system, comprising:

[0019] The ear fixation device, image acquisition device, and image processing device described in the first aspect;

[0020] The image acquisition device and the image processing device are connected via wired or wireless means;

[0021] When acquiring an image of a human ear, the annular mounting hole in the fixing plate of the ear fixing device is fitted onto the target ear, and the target image of the target ear is acquired by the image acquisition device and transmitted to the image processing device. The image processing device is used to standardize and store the target image.

[0022] This application provides an ear fixation device and an ear image acquisition system, relating to the field of forensic science / evidence identification technology. The ear image acquisition system includes an ear fixation device, an image acquisition device, and an image processing device. The ear fixation device has an annular mounting hole on its fixing plate, which stably positions the target ear and effectively blocks surrounding obstacles, ensuring accurate positioning and stability during the acquisition process. The image acquisition device employs high-precision technology to capture the fine structure and features of the ear, providing reliable data support for subsequent analysis and identification. The image processing device is responsible for accurately standardizing and reliably storing the acquired images to improve the quality of the ear images and ensure the integrity of the image data. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 This is a schematic diagram of the structure of a first embodiment of the ear fixation device provided in this application.

[0025] Figure 2 This is a schematic diagram of the structure of a second embodiment of the ear fixation device provided in this application.

[0026] Figure 3This is a schematic diagram of the structure of Embodiment 3 of the human ear fixation device provided in this application;

[0027] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the human ear fixation device provided in this application;

[0028] Figure 5 This is a schematic diagram of the structure of the human ear image acquisition system provided in Embodiment 1 of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the human ear image acquisition system provided in Embodiment 2 of this application;

[0030] Figure 7 This is a schematic diagram of the structure of an image processing apparatus according to an embodiment of this application;

[0031] Figure 8 This is a human ear image information recording table provided for embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10-Ear fixation device; 101-Fixing plate; 1011-Annular mounting hole; 1012-Annular reference frame; 10121-First calibration point; 10122-Second calibration point; 1013-Acquisition card model; 11-Image acquisition device; 12-Image processing device; 13-Ear image acquisition system; 14-Standardization processing; 15-Storage.

[0034] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0036] In forensic science, the human ear, as a unique and relatively stable biometric feature, has broad application prospects. Compared to the face, iris, fingerprints, and teeth, the morphological features of the ear are relatively more stable, unaffected by changes in facial expressions, and generally do not change significantly with age or weight. Key morphological features such as the helix, antihelix, tragus, and antitragus exhibit high recognizability in individual identification and are not easily affected by makeup or cosmetic surgery. In current forensic applications, ear images are typically extracted from surveillance videos or online videos and compared with sample images of the target person's ear to complete identity verification.

[0037] Traditional techniques typically require the subject to be in a side-standing, side-sitting, or side-lying position to fully showcase the shape and details of the auricle. The acquisition equipment is usually handheld by the photographer or fixed using a tripod to ensure consistent shooting angles and distances.

[0038] However, these traditional technical solutions have certain limitations. For example, manual operation may lead to unstable posture or inaccurate shooting angles, thus affecting the clarity and integrity of the ear image. These factors may reduce the accuracy of subsequent identification and authentication, especially in forensic science and forensic evidence identification tasks that require high precision.

[0039] In addition, the technical solution of the system that uses infrared acquisition devices to collect thermal radiation signals from the ear and then obtains a three-dimensional model of the outer contour of the ear requires the configuration of multiple infrared acquisition devices. The acquisition process is relatively complicated and is not suitable for quickly acquiring ear sample images in specific locations. Although multi-angle face image acquisition devices of different designs can acquire side face images, none of them have designed auxiliary devices or proposed shooting schemes for the ear, a key local area.

[0040] The overall idea of ​​this application is as follows: When acquiring images of a human ear, obstacles around the target ear can easily interfere with the image acquisition process, affecting its clarity and quality. Furthermore, the presence of these obstacles complicates subsequent image processing, further reducing the quality of the acquired ear images. To address this issue, this application proposes a device that effectively blocks surrounding obstacles, ensuring precise positioning and stable fixation of the target ear during acquisition, simplifying subsequent image processing, and thus improving the quality of the ear images.

[0041] Based on the above technical concept, this application provides an ear fixation device and an ear image acquisition system, relating to the fields of forensic science and physical evidence identification. The ear image acquisition system includes an ear fixation device, an image acquisition device, and an image processing device. Specifically, when acquiring ear images, the fixation device has an annular mounting hole on its fixing plate, which can be fitted behind the target ear to stably fix it while effectively blocking other obstacles. This design ensures accurate positioning and stability of the target ear during acquisition, thereby improving image clarity and quality. The image acquisition device can capture the fine structure and features of the target ear, ensuring high resolution and detail integrity of the acquired images. The image processing device is responsible for standardizing and reliably storing the target images acquired by the image acquisition device. Through standardization, the image processing device can eliminate noise and interference that may exist during acquisition, further improving image quality and consistency. Furthermore, a reliable storage mechanism ensures the integrity and security of the ear images, providing a solid foundation for subsequent analysis and identification.

[0042] The technical solution of this application will now be described in detail through specific embodiments.

[0043] It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] Figure 1 This is a schematic diagram of the structure of an embodiment of the ear fixation device provided in this application. Figure 1 As shown, the ear fixation device 10 includes a fixing plate 101, on which an annular placement hole 1011 for placing a human ear is provided.

[0045] When acquiring images of a human ear, the annular mounting hole 1011 is fitted behind the target ear to fix the target ear and block other obstacles.

[0046] In the process of acquiring human ear images, ensuring the stability and accurate positioning of the target ear is crucial. Traditional acquisition methods often rely on manual operation, such as having the subject stand, sit, or lie on their side. This method is easily affected by unstable posture, inaccurate shooting angle, and interference from surrounding obstacles, resulting in poor quality human ear images. These problems not only increase the complexity of subsequent image processing but may also affect the accuracy of identification and authentication. To address this, this application provides a human ear fixation device 10.

[0047] The fixing plate 101 is the core component of the ear fixation device 10. Its main function is to provide a stable support structure to ensure the fixation and positioning of the target ear during the collection process. The design of the fixing plate 101 takes into account the shape characteristics of the human ear and the requirements of the collection environment. It uses sturdy and lightweight materials and can work stably in different environments.

[0048] The fixing plate 101 is provided with an annular mounting hole 1011, which is designed to accurately place the target ear.

[0049] It is worth noting that the size and shape of the annular mounting hole 1011 are precisely calculated to ensure a tight fit behind the target ear. The annular mounting hole 1011 not only provides stable fixation for the target ear but also effectively blocks other obstacles such as hair, glasses, earrings, and collars, preventing them from interfering with the image acquisition process.

[0050] Optionally, the shape of the annular mounting hole 1011 can be adjusted according to the different shapes of the target ear, such as being designed as an oval, circular, square or other geometric shapes, to better adapt to target ears of different sizes and shapes, thereby improving the stability and comfort of the fixation.

[0051] Preferably, the annular mounting hole 1011 can be designed in a circular shape. A circular annular mounting hole 1011 not only simplifies the manufacturing process, reduces processing difficulty and cost, but also significantly improves the quality of the human ear image. This is because the uniformity and symmetry of the circular hole effectively reduce image distortion and light scattering, thus providing a clearer and more accurate image. Furthermore, the circular design helps to evenly distribute pressure, avoiding localized stress concentration, further enhancing the durability and stability of the fixing plate 101.

[0052] In practical applications, when it is necessary to acquire an image of a target ear, the operator places the annular mounting hole 1011 on the fixing plate 101 behind the target ear. Through this operation, the target ear is stably fixed in the target position, and surrounding obstacles, such as hair, glasses, earrings, and collars, are effectively blocked.

[0053] In a preferred embodiment, the annular mounting hole 1011 is located at the center of the fixing plate 101.

[0054] The annular mounting hole 1011 is positioned at the center of the fixing plate 101 to ensure the symmetry and stability of the target ear on the fixing plate 101.

[0055] Specifically, the annular mounting hole 1011 is located at the center of the fixing plate 101, meaning that the center point of the annular mounting hole 1011 coincides with the center point of the fixing plate 101. Since the shape and size of the fixing plate 101 are symmetrically designed, this ensures that when the target ear is placed in the annular mounting hole 1011, the central axis of the target ear coincides with the central axis of the fixing plate 101, thus achieving symmetry. Simultaneously, the central position design ensures that the fixing plate 101 experiences uniform force during use. Regardless of which side of the fixing plate 101 is subjected to the same force, this avoids tilting or movement caused by uneven force distribution, thereby ensuring the stability of the target ear.

[0056] Optionally, in certain specific application scenarios, the annular mounting hole 1011 can also be set at the edge or corner of the fixing plate 101, or designed to be adjustable to adapt to different acquisition angles and environmental requirements.

[0057] The ear fixation device 10 provided in this embodiment has an annular mounting hole 1011 positioned at the center of the fixing plate 101, which significantly improves the stability, adaptability, and ease of operation of the ear fixation device 10. Specifically, this design allows the fixing plate 101 to distribute force evenly, reducing offset and wobbling, thereby ensuring the stability of the ear during the fixation process. Simultaneously, the annular mounting hole 1011 at the center can accommodate ears of different sizes and shapes, improving the versatility and adaptability of the ear fixation device 10. Furthermore, the central design simplifies operation, allowing operators to more easily align and fix the ear, reducing operation time and complexity, and improving the overall user experience.

[0058] In one possible implementation, the diameter of the annular mounting hole 1011 ranges from 3 cm to 7 cm.

[0059] Specifically, when the annular mounting hole 1011 is designed to be circular, its diameter ranges from 3 cm to 7 cm. This design not only fully considers the average size of a human ear, ensuring that all subjects can use the device, but also optimizes the fixation effect. Specifically, the annular mounting hole 1011 with a diameter ranging from 3 cm to 7 cm provides sufficient space to accommodate ears of different sizes, while avoiding stability and accuracy issues that might arise from excessively large sizes.

[0060] Furthermore, standardized dimensions make the production process more efficient, reduce material waste and processing errors, thereby improving the consistency and quality control of the ear fixation device 10.

[0061] Preferably, the diameter of the annular mounting hole 1011 is in the range of 5 cm to 6 cm.

[0062] Specifically, when the diameter of the annular mounting hole 1011 is 5 cm, the ear fixation device 10 is a small size. This means that this size of ear fixation device 10 is suitable for smaller ears, ensuring that the subject can obtain better comfort and fixation. The small ear fixation device 10 has a compact design that can better fit the ear contour, thereby providing more stable support and fixation.

[0063] When the diameter of the annular mounting hole 1011 is 5.5 cm, the ear fixation device 10 is a medium size. The medium-sized ear fixation device 10 is suitable for medium-sized ears, providing a balanced solution that ensures sufficient space to accommodate the ear while maintaining stability and accuracy. The medium design strikes a balance between comfort and fixation effectiveness, making it suitable for most subjects.

[0064] When the diameter of the annular mounting hole 1011 is 6 cm, the ear fixation device 10 is a large size. The large-size ear fixation device 10 is suitable for larger ears, ensuring that even subjects with larger ears can use the device. The large design provides more space so that the subject will not feel pressured during use, while maintaining the stability and accuracy of the ear fixation device 10.

[0065] In summary, the diameter range of the annular mounting hole 1011 can better accommodate the ear sizes of different subjects, ensuring the comfort and stability of the ear fixation device 10 during wear. At the same time, the appropriate hole diameter design helps prevent the ear fixation device 10 from slipping or falling off during use, thereby improving the quality and reliability of ear image acquisition.

[0066] The ear fixation device 10 provided in this embodiment of the application, when acquiring ear images, has an annular mounting hole 1011 fitted behind the target ear to fix the target ear and block other obstacles. This design can effectively stabilize the ear position, reduce external interference, and ensure consistency and accuracy during the acquisition process, thereby significantly improving the quality and clarity of the ear image. In addition, this design can also reduce the influence of background clutter on the image, improve the image contrast and detail, and make subsequent image processing and analysis more accurate and reliable.

[0067] Figure 2 This is a schematic diagram of the structure of a second embodiment of the ear fixation device provided in this application. Figure 2 As shown, in Figure 1 Based on the ear fixation device 10 shown, an annular reference frame 1012 is provided around the annular mounting hole 1011 on the fixing plate 101. The annular reference frame 1012 is a different color from the fixing plate 101.

[0068] Specifically, in Figure 1Based on the ear fixation device 10 shown, an annular reference frame 1012 is provided around the annular mounting hole 1011 on the fixing plate 101.

[0069] The main function of the annular reference frame 1012 is to provide clear visual and physical guidance, helping operators quickly and accurately align the target ear with the annular mounting hole 1011, thereby ensuring the ear is in an optimal position during the acquisition process. With the assistance of the annular reference frame 1012, operators can perform positioning more intuitively, reducing positioning errors and improving operational convenience and positioning accuracy. Furthermore, the annular reference frame also provides clear boundary references during image acquisition and processing, reducing background interference and ensuring higher clarity and accuracy in the acquired images.

[0070] It is worth noting that the annular reference frame 1012 is a different color from the fixed plate 101. This design aims to prevent the ear from matching the color of the fixed plate 101, thereby reducing the complexity and error in subsequent ear positioning. By using different colors, the ear becomes more visually prominent, making it easier for operators to quickly and accurately locate the ear, thus improving positioning accuracy and efficiency.

[0071] Alternatively, besides color differences, the annular reference frame 1012 can be distinguished in other ways. For example, different materials can be used to differentiate the annular reference frame 1012 from the fixed plate 101 by touch, allowing operators to perceive the position of the annular reference frame 1012 even in low-light conditions. Surface textures or raised markings are also effective distinguishing methods; these physical features can further enhance the operator's positioning perception, ensuring the ear is in an optimal position during data acquisition.

[0072] To further improve positioning accuracy, visual aids such as marker lines, scales, or symbols can be added to the circular reference frame 1012. These markers can provide additional guidance, helping the data acquisition subject to more accurately align with the target ear.

[0073] The ear fixation device 10 provided in this application significantly improves operational convenience and positioning accuracy by setting an annular reference frame 1012 of a different color from the fixing plate 101 around the annular mounting hole 1011. First, the color difference of the annular reference frame 1012 creates a clear visual contrast, enabling the operator to quickly and accurately locate the ear, reducing positioning errors and thus improving operational efficiency and accuracy. Second, during image acquisition and processing, the color difference provides a clear boundary reference, reducing background interference and making the ear boundary more distinct. This not only helps improve image clarity and accuracy but also ensures higher image quality. Furthermore, the design of the annular reference frame 1012 can provide stable positioning assistance in complex environments, further enhancing the reliability and practicality of the device.

[0074] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the ear fixation device provided in this application. Figure 3 As shown, in Figure 2 Based on the ear fixation device 10 shown, the annular reference frame 1012 is provided with two calibration points located on the same central axis of the annular mounting hole 1011, namely the first calibration point 10121 and the second calibration point 10122. The two calibration points are used to adjust the position of the target ear.

[0075] Specifically, the annular reference frame 1012 is provided with two calibration points located on the same central axis as the annular mounting hole 1011, namely the first calibration point 10121 and the second calibration point 10122. These two calibration points are designed to provide a precise positioning reference for adjusting the position of the target ear.

[0076] The first calibration point 10121 and the second calibration point 10122 are located symmetrically on the annular reference frame 1012. Through these two calibration points, the operator can more intuitively judge and adjust the position of the ear to ensure that the ear is in an optimal position within the annular mounting hole 1011. This design not only improves the positioning accuracy but also reduces the complexity and time cost of operation.

[0077] Meanwhile, the placement of the first calibration point 10121 and the second calibration point 10122 on the annular reference frame 1012 helps the operator make precise positioning adjustments in multiple dimensions. Firstly, the first calibration point 10121 and the second calibration point 10122 provide clear visual references, enabling the operator to quickly align the target ear and avoid positioning errors caused by positional shifts. Secondly, the symmetrical design of these two calibration points ensures the stability of the ear within the annular mounting hole 1011, preventing image distortion or blurring due to positional shifts.

[0078] In actual operation, the operator can observe the positional relationship between the first calibration point 10121 and the second calibration point 10122, and make fine adjustments to ensure that the upper and lower connection positions of the ear and head are close to and aligned with the first calibration point 10121 and the second calibration point 10122 respectively, so as to ensure that the central axis of the ear is completely aligned with the central axis of the annular mounting hole 1011. This precise alignment method not only improves the positioning accuracy, but also effectively reduces the error caused by manual operation, thereby improving the overall efficiency and reliability of the operation.

[0079] Furthermore, the placement of the first calibration point 10121 and the second calibration point 10122 provides additional reference information during image acquisition, making the ear's boundaries clearer and further improving image quality and accuracy. The symmetrical design of the first calibration point 10121 and the second calibration point 10122 ensures the stability of the ear's position within the fixation device, avoiding image distortion or blurring caused by positional shifts. Through this precise positioning mechanism, operators can more efficiently complete ear positioning and image acquisition tasks.

[0080] Optionally, to further improve ease of operation and positioning accuracy, the first calibration point 10121 and the second calibration point 10122 can be of different colors or shapes so that they are clearly visible under various lighting conditions. This design not only optimizes the user experience but also provides stable positioning assistance in complex environments, further enhancing the reliability and practicality of the ear fixation device 10.

[0081] The ear fixation device 10 provided in this embodiment has two calibration points on the annular reference frame 1012, located on the same central axis as the annular mounting hole 1011. These two calibration points provide precise positioning references and additional image acquisition assistance, helping operators quickly and accurately adjust the position of the target ear so that the upper and lower connection points of the ear to the head are close to and aligned with the calibration points, thereby ensuring that the ear is in an optimal position within the annular mounting hole 1011. This design not only optimizes the user experience and reduces positioning errors and operational complexity, but also significantly improves the quality and reliability of the ear image acquisition. By providing clear boundary references and reducing background interference, the calibration points further improve image clarity and accuracy.

[0082] In one possible implementation, based on any of the above embodiments, the ear fixation device 10 further includes a support structure, with a fixing plate 101 fixed above the support structure.

[0083] Specifically, the ear fixation device 10 also includes a support structure. This support structure provides a stable base to ensure that the fixation plate 101 can be securely fixed thereon.

[0084] Optionally, the support structure can take various forms, such as brackets, bases, or other suitable support components, to meet the needs of different usage scenarios.

[0085] In one possible implementation, the fixing plate 101 is mounted above the support structure by screws, clips, or other securing methods. This design aims to ensure that the fixing plate 101 does not shift or loosen during use, thereby providing a stable operating platform. The support structure can be made of metal, plastic, or composite materials to ensure sufficient strength and durability.

[0086] Optionally, the height and angle of the support structure can be adjusted as needed to accommodate the operating habits and needs of different operators. This flexible design allows the ear fixation device 10 to be used in various environments, improving operational convenience. In this way, the combination of the fixing plate 101 and the support structure not only achieves a stable fixation effect but also provides a solid foundation for the overall functionality of the ear fixation device 10.

[0087] The ear fixation device 10 provided in this application includes a support structure. Specifically, a fixing plate 101 can be fixed above the support structure. This design provides a stable foundation, ensuring that the fixing plate 101 will not shift or loosen during use, thereby significantly improving operational stability and reliability. Simultaneously, the combination of the support structure and the fixing plate 101 ensures that the ear's position within the fixation device remains constant, thus improving the quality of the ear image.

[0088] In one possible implementation, the support structure is any of the following: a tripod, a fixing clamp, or a support rod.

[0089] Specifically, each type of support structure has its unique design and installation method to meet different usage requirements. Support structures include, but are not limited to, tripods, fixing clamps, or support rods.

[0090] The tripod typically consists of three height-adjustable legs that form a stable triangular structure at the base. A mounting plate 101 is attached to the top of the tripod using screws or clips. The tripod is designed to provide stable support in various ground conditions. The tripod legs are usually telescopic to allow for height adjustment on uneven ground, ensuring the levelness and stability of the mounting plate 101.

[0091] The fixing clamp typically consists of two or more clamping components that securely hold the fixing plate 101 in place. The fixing clamp can be adjusted via knobs or bolts to ensure that the fixing plate 101 does not loosen during use. The fixing clamp is suitable for scenarios requiring the ear fixing device 10 to be mounted on a desktop or other flat surface. The clamping force can be adjusted as needed to accommodate fixing plates 101 of different thicknesses and desktops of different materials.

[0092] The support rod is typically one or more sturdy rod-like structures, with the fixing plate 101 secured to the top of the support rod by means of screws or welding. The support rod can be installed on the ground or other fixed bases to provide stable support.

[0093] Optionally, the support rods are divided into horizontal support rods and vertical support rods. Horizontal support rods are typically installed horizontally, parallel to the ground, primarily providing horizontal support and stability. They are suitable for scenarios where the fixing plate 101 needs to be installed on vertical surfaces such as walls or table edges. Horizontal support rods offer flexible installation; their position and angle can be adjusted according to specific needs to prevent the fixing plate 101 from moving or tilting horizontally. Vertical support rods are installed vertically, perpendicular to the ground, primarily providing vertical support and stability. They are suitable for scenarios where the fixing plate 101 needs to be installed on the ground or other horizontal surfaces. The height of the vertical support rods is usually fixed, but different lengths can be selected to adapt to different usage environments and prevent the fixing plate 101 from moving or tilting vertically.

[0094] By appropriately selecting and combining horizontal and vertical support rods, multi-directional stable support can be achieved, thereby meeting the needs of different application scenarios. For example, in complex application scenarios where the fixed plate 101 needs to remain stable in multiple directions, horizontal and vertical support rods can be used simultaneously to form a more robust support structure.

[0095] Through the different support structures described above, the fixing plate 101 can remain stable in various environments, thereby ensuring the normal operation of the ear fixation device 10. Each support structure has its unique design and installation method to meet different usage needs. For example, when used outdoors, a tripod may be the better choice because it can adapt to uneven ground. In laboratory or office environments, a fixing clamp may be more suitable because it can be firmly fixed to a tabletop. In scenarios requiring vertical support, a support pole may be a more suitable option.

[0096] Optionally, the material of the support structure can be selected based on the specific application. Tripods and support rods are typically made of metal materials, such as aluminum alloy or stainless steel, to provide sufficient strength and durability. Fixtures can be made of metal or high-strength plastic to ensure clamping force and durability.

[0097] By selecting appropriate support structures and materials, the stability and reliability of the ear fixation device 10 can be ensured in various environments, thereby meeting the needs of different application scenarios.

[0098] The ear fixation device 10 provided in this embodiment mainly describes the types of support structures. Specifically, the support structures include, but are not limited to, tripods, fixing clamps, or support rods. These support structures can provide stable and durable support, thereby meeting the needs of the ear fixation device 10 in various usage environments.

[0099] In one possible implementation, the fixing plate 101 is made of cardboard, resin, or plastic.

[0100] Specifically, the fixing plate 101 included in the ear fixation device 10 is made of materials including but not limited to cardboard, resin or plastic.

[0101] Cardboard is lightweight, easy to process, and low-cost, making it suitable for temporary or single-use applications. Resin offers high strength and durability, resisting environmental influences and is suitable for applications requiring long-term use and high stability. Plastic combines lightweight and durability with good processing properties, making it suitable for various usage environments.

[0102] Optionally, the fixing plate 101 can also be made of metal, composite materials, or high-strength fibers. Among them, metal materials such as aluminum alloys and stainless steel have extremely high strength and corrosion resistance. Composite materials such as carbon fiber and glass fiber are lightweight and high-strength. High-strength fiber materials have excellent impact resistance and wear resistance.

[0103] When selecting materials for the fixing plate 101, factors such as strength, weight, and durability are mainly considered. Strength is crucial to ensuring the fixing plate 101 is not easily deformed or damaged during use. Weight affects comfort and portability. Durability determines the lifespan of the fixing plate 101 in different environments.

[0104] By selecting appropriate materials, the stability and reliability of the fixing plate 101 can be ensured during use, thereby meeting the requirements of different usage environments and needs.

[0105] The ear fixation device 10 provided in this embodiment mainly describes the materials used to manufacture the fixation plate 101, including cardboard, resin, and plastic. These materials provide lightweight, durable, and easy-to-process characteristics, thereby ensuring the stability and reliability of the fixation plate 101 in the ear fixation device 10, meeting the needs of different usage environments, and improving the applicability of the ear fixation device 10.

[0106] In one possible implementation, the outer contour of the fixing plate 101 is circular, elliptical, square, or rectangular.

[0107] Specifically, the outer contour of the fixing plate 101 includes, but is not limited to, circles, ovals, squares, or rectangles.

[0108] Among them, the circular fixing plate 101 has symmetry and uniform edges, which can evenly distribute pressure. The elliptical fixing plate 101 conforms more to the natural contour of the ear, which can improve wearing comfort and stability. The square fixing plate 101 is easy to process and manufacture, and can provide a larger surface area. The rectangular fixing plate 101 provides more installation space and flexibility.

[0109] Optionally, the outer contour of the fixing plate 101 can also be a polygon, heart shape or irregular shape to meet the needs of different scenarios.

[0110] The ear fixation device 10 provided in this embodiment mainly describes the outer contour of the fixation plate 101, which includes, but is not limited to, circles, ovals, squares, or rectangles. By selecting an appropriate outer contour shape, the functionality and comfort of the fixation plate 101 in the ear fixation device 10 can be ensured, thereby meeting the needs of different application scenarios and providing stable and reliable support in various usage environments.

[0111] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the ear fixation device provided in this application. Figure 4 As shown, based on any of the above embodiments, the ear fixation device 10 includes a fixing plate 101, an annular mounting hole 1011, an annular reference frame 1012, a data acquisition card model 1013, a first calibration point 10121, and a second calibration point 10122.

[0112] It is worth noting that the fixing plate 101 has a background pattern and is printed or affixed with the acquisition card model 1013, which is the model of the ear fixing device 10. It is divided into small, medium and large sizes, which are determined according to the diameter of the annular mounting hole 1011.

[0113] An annular reference frame 1012 is set around the annular mounting hole 1011, and the color of the annular reference frame 1012 is different from the color of the fixing plate 101.

[0114] The first calibration point 10121 and the second calibration point 10122 are located on the same central axis of the annular mounting hole 1011.

[0115] Before taking an image of a human ear, the appropriate model of the ear fixation device 10 should be selected based on the size of the subject's ear. When taking an image of a human ear, the ear to be captured should be inserted into the annular mounting hole 1011 from top to bottom, and adjusted so that the ear to be captured is fully exposed in front of the fixing plate 101.

[0116] Figure 5 This is a schematic diagram of the structure of an embodiment of the human ear image acquisition system provided in this application. Figure 5 As shown, the human ear image acquisition system 13 includes:

[0117] The device includes an ear fixation device 10, an image acquisition device 11, and an image processing device 12.

[0118] The image acquisition device 11 and the image processing device 12 are connected by wired or wireless means.

[0119] When acquiring an image of a human ear, the annular mounting hole 1011 in the fixing plate 101 of the ear fixing device 10 is fitted onto the target human ear, and the target image of the target human ear is acquired by the image acquisition device 11 and transmitted to the image processing device 12. The image processing device 12 is used to standardize and store the target image.

[0120] Specifically, the human ear image acquisition system 13 includes an ear fixation device 10, an image acquisition device 11, and an image processing device 12, supporting the association of information items such as the source and distinguishing features of the human ear. Simultaneously, the human ear image acquisition system 13 has functions such as assisting in human ear image acquisition and human ear sample image correction, processing, and storage. The ear fixation device is simple in design, easy to carry and install, and facilitates users to quickly acquire complete and clear partial images of the human ear without background or foreground interference, solving the problems of ear images being easily affected by ear orientation, stray hairs, and head / face background interference in everyday environments.

[0121] When acquiring an image of a human ear, the annular mounting hole 1011 in the fixing plate 101 of the ear fixing device 10 is first fitted onto the back of the target ear to ensure that the ear remains stable and fixed during image acquisition. The design of the fixing plate 101 effectively prevents the ear from moving or being obstructed by other obstacles during the acquisition process, thereby improving the clarity and accuracy of the ear image.

[0122] Image acquisition device 11 is used to capture images of the target human ear. This device can be a high-resolution camera, infrared camera, or other suitable image sensor, capable of accurately recording the details and features of the human ear. The acquired ear image is transmitted to image processing device 12 via wired or wireless means. Wireless transmission methods such as Bluetooth offer greater flexibility and convenience, while wired transmission methods such as Ethernet ensure the stability and speed of image data transmission.

[0123] The image processing device 12 is responsible for receiving and processing the transmitted target image. The processing includes image standardization, such as adjusting brightness, contrast, and color balance, to ensure the consistency and quality of the human ear image. Simultaneously, the image processing device 12 can also perform feature extraction, analysis, and storage of the human ear image.

[0124] In this way, the coordinated operation of the ear fixation device 10, the image acquisition device 11, and the image processing device 12 enables efficient and accurate acquisition and processing of ear images. This not only improves image quality and consistency but also enhances the system's applicability and reliability, providing stable and reliable support in various usage environments.

[0125] The human ear image acquisition system 13 provided in this application embodiment achieves efficient and accurate acquisition and processing of human ear images through the coordinated operation of the human ear fixation device 10, the image acquisition device 11, and the image processing device 12. This not only improves the quality and consistency of the images but also enhances the applicability and reliability of the system, providing stable and reliable support in various usage environments.

[0126] Figure 6 This is a schematic diagram of the structure of the human ear image acquisition system provided in Embodiment 2 of this application. Figure 6 As shown, based on any of the above embodiments, the human ear image acquisition system 13 includes a human ear fixation device 10 and an image acquisition device 11.

[0127] The ear fixation device 10 is used to fix the target ear and block other obstacles. The image acquisition device 11 is used to acquire images of the target ear.

[0128] In one possible implementation, the focal plane of the image acquisition device 11 is parallel to the plane containing the target ear. This parallel focal plane ensures that the image acquisition device 11 can capture a complete image of the ear without distortion or blurring, thus guaranteeing the clarity and accuracy of the ear image. Simultaneously, the parallel focal plane helps to distribute light evenly, avoiding shadows or uneven brightness caused by angle issues. This improves the quality of the ear image, making it more reliable and consistent in subsequent processing and analysis. Uniform light distribution also reduces the workload of the image processing device 12 during the standardization process, improving processing efficiency.

[0129] Figure 7 This is a schematic diagram of the structure of an image processing apparatus according to an embodiment of this application. Figure 7 As shown, the image processing device 12 is used for standardization processing 14 and storage 15.

[0130] Specifically, the image processing device 12, combined with a pre-trained ear region detection model, first automatically detects the ear image acquired by the image acquisition device 11 to obtain the ear region bounding box, and then crops and saves it. Next, the cropped and saved ear image undergoes standardization processing 14 to obtain a corrected ear image. For example, the ear image is rotated, scaled, and background removed based on the first calibration point 10121 and the second calibration point 10122 to ensure the consistency of the ear image size and the reliability of the ear image quality. Finally, the corrected ear image, the uncorrected ear image, and the ear image information are stored in the database.

[0131] In one possible implementation, Figure 8 This is a human ear image information recording table provided for embodiments of this application. For example... Figure 8 As shown in the above embodiment, when acquiring human ear images, it is necessary to record the corresponding personnel information, ear features, and acquisition information.

[0132] Specifically, the human ear image information record table includes fields, name, type, and description. Among them, the name includes name, personnel number, gender, left and right ear identification, symmetry, prominence, auricular tubercle, accessory ear, ear canal, and sampling date. Specifically, the field corresponding to the name is Name, type String, described as the person's name; the field corresponding to the personnel number is ID, type String, described as the person's unique ID; the field corresponding to gender is Gender, type Bool, described as female and male; the field corresponding to left and right ear identification is Side, type Bool, described as left and right ear; the field corresponding to symmetry is Symmetry, type Bool, described as symmetrical and asymmetrical; the field corresponding to prominence is Prominence, type String, described as close, general, and transverse; the field corresponding to auricular tubercle is Auricular tubercle, type String, described as none, one, and multiple; the field corresponding to accessory auricle is Accessory auricle, type String, described as none, one, and multiple; the field corresponding to ear piercing is Ear piercing, type String, described as none, one, and multiple; and the field corresponding to sampling date is Sampling Date, type String, described as YYYY-MM-DD.

[0133] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0134] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A human ear fixation device, characterized in that, The fixing device includes: Fixing plate; The fixing plate is provided with an annular placement hole for placing a human ear; wherein, when acquiring an image of a human ear, the annular placement hole is fitted behind the target human ear to fix the target human ear and block other obstacles; An annular reference frame is provided around the annular mounting hole, and the annular reference frame is a different color from the fixing plate.

2. The ear fixation device according to claim 1, characterized in that, The annular reference frame is provided with two calibration points located on the same central axis of the annular mounting hole. The two calibration points are used to adjust the position of the target ear.

3. The ear fixation device according to claim 1 or 2, characterized in that, The annular mounting hole is located at the center of the fixing plate.

4. The ear fixation device according to claim 1 or 2, characterized in that, The diameter of the annular mounting hole ranges from 3 cm to 7 cm.

5. The ear fixation device according to claim 1 or 2, characterized in that, The ear fixation device also includes: A supporting structure, wherein the fixing plate is fixed above the supporting structure.

6. The ear fixation device according to claim 5, characterized in that, The support structure can be any of the following: a tripod, a fixing clamp, or a support rod.

7. The ear fixation device according to claim 1 or 2, characterized in that, The fixing plate is made of cardboard, resin, or plastic.

8. The ear fixation device according to claim 1 or 2, characterized in that, The outer contour of the fixing plate is circular, elliptical, square, or rectangular.

9. A human ear image acquisition system, characterized in that, include: The ear fixation device, image acquisition device, and image processing device according to any one of claims 1 to 8; The image acquisition device and the image processing device are connected via wired or wireless means; When acquiring an image of a human ear, the annular mounting hole in the fixing plate of the ear fixing device is fitted onto the target ear, and the target image of the target ear is acquired by the image acquisition device and transmitted to the image processing device. The image processing device is used to standardize and store the target image.

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