Palm recognition component and recognition device

Abstract

The present application discloses a palm recognition component and a recognition device, wherein the palm recognition component includes: a mounting frame, an image acquisition device, a first fill light and a second fill light. The image acquisition device is arranged at a non-center point of the mounting surface of the mounting frame and is arranged adjacent to the center point of the mounting surface. The above-mentioned setting position of the image acquisition device enables the image acquisition device to be more accurately aligned with the center of the palm, so that the image acquisition device can effectively capture the center area of ​​the palm, thereby improving the recognition rate of the product, that is, improving the recognition accuracy of the product. In addition, the image acquisition device can simultaneously capture palm print images and palm vein images, so that there is no phase difference between the palm print image and the palm vein image, thereby ensuring that the error between the captured palm print image and the palm vein image and the captured palm is small, that is, ensuring that the palm print image and the palm vein image have high accuracy.

Description

Technical Field

[0001] The present application relates to the field of image recognition technology, and in particular to a palm recognition component and a recognition device. Background Art

[0002] Palm print and palm vein recognition technology uses a camera to obtain palm prints and vein images for recognition. Compared with other biometric recognition technologies, palm swipe payment has the advantages of being difficult to forge, high recognition rate, fast recognition speed, and non-contact characteristics. However, existing recognition devices are not accurate enough for palm prints and palm veins, and the recognition speed is slow. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a palm recognition component and a recognition device with high recognition accuracy and fast recognition speed.

[0004] In order to achieve at least one of the above purposes, the present application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a palm recognition component, comprising: a mounting frame; an image acquisition device, the image acquisition device being arranged at a non-central point of a mounting surface of the mounting frame and being arranged adjacent to a central point of the mounting surface, the image acquisition device comprising an image sensor, the image sensor being configured to acquire a palm print image and a palm vein image of a palm; a first fill light, the first fill light being arranged on the mounting surface and arranged along a circumference of the image acquisition device, the first fill light being configured to emit blue light to a palm; and a second fill light, the second fill light being arranged on the mounting surface and arranged along a circumference of the image acquisition device, the second fill light being located between the image acquisition device and the first fill light, the second fill light being configured to emit infrared light to a palm.

[0006] In the battery coding mechanism as above, the wavelength of the blue light is 460 nm, and / or the wavelength of the infrared light is 850 nm.

[0007] In the battery coding mechanism as above, the image sensor is a black and white image sensor.

[0008] In the battery coding mechanism as above, a first light-isolating plate is arranged between the first fill light component and the second fill light component; and a second light-isolating plate is arranged between the second fill light component and the image acquisition device.

[0009] In the battery coding mechanism as above, the palm recognition component further comprises: a light scattering plate, the light scattering plate is arranged on the mounting frame, and the setting position of the light scattering plate corresponds to the position of the first fill light component.

[0010] As in the battery coding mechanism above, a groove is arranged on the surface of the light-diffusing plate opposite to the first fill light component, so that the surface is uneven.

[0011] As the battery engraving mechanism above, the palm recognition component further includes: a glass cover plate, the glass cover plate is arranged on the mounting frame, and the setting position of the glass cover plate corresponds to the position of the second fill light component; a filter layer is arranged on the plate surface of the glass cover plate, and the filter layer is configured to filter other light except infrared light.

[0012] In the battery coding mechanism as above, the mounting frame is a metal frame, and heat dissipation fins are provided on the mounting frame.

[0013] As above, the battery engraving mechanism, wherein the image acquisition device further includes: a dual-bandpass filter, the setting position of the dual-bandpass filter corresponds to the position of the image sensor, and the dual-bandpass filter is configured to filter the light entering the image sensor so that the light emitted by the first fill light component and the light emitted by the second fill light component can be collected by the image sensor.

[0014] Compared with the prior art, the above technical solution has the following advantages:

[0015] The image acquisition device is set at a position that enables the image acquisition device to be more accurately aligned with the center of the palm, so that the image acquisition device can effectively capture the central area of ​​the palm, thereby improving the recognition rate of the product, that is, improving the recognition accuracy of the product; in addition, blue light is used to fill the palm. Since the wavelength of blue light is shorter and the energy is higher, it can provide stronger penetration and can better highlight the details of the palm print. At the same time, blue light can also reduce reflection and glare, thereby improving the quality of the image captured by the image acquisition device, thereby making the recognition rate higher when the palm print image is compared with the image in the input database, and improving the recognition speed and accuracy of the product; in addition, the image acquisition device can simultaneously capture the palm print image and the palm vein image, so that there is no phase difference between the palm print image and the palm vein image, thereby ensuring that the error between the captured palm print image and the palm vein image and the captured palm is small, that is, ensuring that the palm print image and the palm vein image have higher accuracy, thereby making the recognition rate higher when the palm print image and the palm vein image are compared with the image in the input database, improving the recognition speed and accuracy of the product, and improving the comfort of use of the product.

[0016] In a second aspect, an embodiment of the present application provides a recognition device, comprising the above-mentioned palm recognition component.

[0017] Compared with the prior art, the above technical solution has the following advantages:

[0018] The recognition device has a high recognition rate, thereby improving the recognition speed and accuracy of the product, and further improving the comfort of using the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A partial cross-sectional structural schematic diagram of a first embodiment of a palm recognition component provided in some embodiments of the present application;

[0021] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure of the image acquisition device shown in;

[0022] Figure 3 A schematic diagram of a partial structure of a first embodiment of a palm recognition component provided in some embodiments of the present application from another perspective;

[0023] Figure 4 A partial structural diagram of a second embodiment of a palm recognition component provided in some embodiments of the present application;

[0024] Figure 5 A partial cross-sectional structural schematic diagram of a third embodiment of a palm recognition component provided in some embodiments of the present application;

[0025] Figure 6 A schematic diagram of the partial cross-sectional structure of another embodiment of the image acquisition device provided in some embodiments of the present application.

[0026] The reference numerals are as follows:

[0027] 10. Mounting frame; 11. Mounting surface;

[0028] 20. Image acquisition device; 21. Image sensor; 22. Dual-bandpass filter;

[0029] 31. First fill light; 32. Second fill light;

[0030] 41. a first light-isolating plate; 42. a second light-isolating plate;

[0031] 50. homogenizing plate; 51. groove;

[0032] 60. Glass cover. DETAILED DESCRIPTION

[0033] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0035] The "embodiment" mentioned in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0036] The special word "exemplary" mentioned in this application means "used as an example, embodiment or illustrative". Any embodiment described as "exemplary" is not necessarily interpreted as being superior or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0037] In the description of this application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0038] In the description of this application, the technical term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the description of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the description of the present application, “plurality” means two or more (including two), unless otherwise clearly and specifically defined.

[0041] In the description of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0042] The technical solutions of the embodiments of the present application are described in detail below in conjunction with the accompanying drawings. The technical features involved in the different implementation modes of the present application described below can be combined with each other as long as there is no conflict between them.

[0043] like Figures 1 to 3 As shown, the palm recognition component provided by the embodiment of the first aspect of the present application includes: a mounting frame 10 , an image acquisition device 20 , a first fill light component 31 and a second fill light component 32 .

[0044] The image acquisition device 20 is arranged at a non-center point of the mounting surface 11 of the mounting frame 10, and is arranged adjacent to the center point of the mounting surface 11 (that is, the image acquisition device 20 is located on the central axis of the center of the circle of the mounting surface 11, and is not located in the middle and below the center of the circle). The image acquisition device 20 includes an image sensor 21, and the image sensor 21 is configured to capture a palm print image and a palm vein image of the palm. Figure 3 The point where the two dotted lines intersect is the center point.

[0045] The first fill light element 31 is disposed on the mounting surface 11 and along the circumference of the image acquisition device 20 . The first fill light element 31 is configured to emit blue light toward the palm.

[0046] The second fill light 32 is disposed on the mounting surface 11 and along the circumference of the image acquisition device 20 . The second fill light 32 is located between the image acquisition device 20 and the first fill light 31 . The second fill light 32 is configured to emit infrared rays to the palm.

[0047] In the process of collecting palm print images and palm vein images, the user generally aligns the center of the entire hand with the center of the palm recognition component. However, the hand includes fingers and palms. If the image acquisition device 20 is located at the center point of the mounting surface 11, the image acquired by the image acquisition device 20 includes more finger images, which will affect the recognition accuracy of the product. Therefore, in the palm recognition component provided by the present application, the image acquisition device 20 is arranged at a non-center point of the mounting surface 11 of the mounting frame 10 and is arranged adjacent to the center point of the mounting surface 11. The above-mentioned setting position of the image acquisition device 20 enables the image acquisition device 20 to be more accurately aligned with the center of the palm, so that the image acquisition device 20 can effectively capture the central area of ​​the palm, thereby improving the recognition rate of the product, that is, improving the recognition accuracy of the product.

[0048] In addition, blue light is used to fill in the palm light. Since blue light has a shorter wavelength and higher energy, it can provide stronger penetration and better highlight the details of the palm print. At the same time, blue light can also reduce reflection and glare, thereby improving the quality of the image captured by the image acquisition device 20, thereby making the recognition rate higher when the palm print image is compared with the image input into the database, thereby improving the recognition speed and accuracy of the product.

[0049] In addition, the image acquisition device 20 can simultaneously acquire the palm print image and the palm vein image, so that there is no phase difference between the palm print image and the palm vein image, thereby ensuring that the errors between the captured palm print image and the palm vein image and the captured palm are small, that is, ensuring that the palm print image and the palm vein image have high accuracy, thereby making the recognition rate higher when the palm print image and the palm vein image are compared with the images in the input database, thereby improving the recognition speed and accuracy of the product and improving the comfort of use of the product.

[0050] In some embodiments of the present application, the wavelength of blue light is 460 nm.

[0051] First, the 460nm blue light wavelength is in the short wavelength region of the visible light spectrum, which means it has higher energy and stronger penetration because it can better penetrate the skin surface, illuminate the deep structure of the palm print, and provide a clearer image. Secondly, the 460nm blue light wavelength has better contrast and reflection characteristics for biological tissues, which helps to improve the visibility and recognition of palm print features, thereby enhancing the accuracy and reliability of palm recognition components.

[0052] In some embodiments of the present application, the wavelength of the infrared ray is 850 nm.

[0053] First, 850nm infrared light can provide better contrast, making the details of the palm vein clearer, which helps to improve recognition accuracy; secondly, 850nm infrared light is less affected by reflection and glare, and can obtain palm vein information more accurately, thereby improving the quality of images captured by the image acquisition device 20, and further increasing the recognition rate when comparing the palm vein image with the image in the input database, thereby improving the recognition speed and accuracy of the product.

[0054] In some embodiments of the present application, the image sensor is a black and white image sensor.

[0055] First, black and white image sensors usually have higher contrast and resolution, which can capture the details and texture information of palm prints and palm veins more clearly, helping to improve recognition accuracy. Second, black and white image sensors are more adaptable to light and can obtain better image quality under different lighting conditions, which makes the product more reliable in various practical scenarios; third, black and white image sensors usually require less computing resources when processing and analyzing images, which can improve the real-time performance and response speed of palm recognition components.

[0056] like Figure 4 As shown, in some embodiments of the present application, a first light isolation plate 41 is disposed between the first fill light component 31 and the second fill light component 32 .

[0057] A second light isolation plate 42 is disposed between the second fill light element 32 and the image acquisition device 20 .

[0058] The first light-isolating plate 41 can, on the one hand, prevent the light emitted by the first fill light 31 and the second fill light 32 from interfering with each other, ensuring that the collected palm print image is not affected by other light sources, thereby improving the contrast and clarity of the image. On the other hand, it can also prevent reflection and scattering, and avoid reflection and refraction of light between different surfaces, thereby reducing noise and interference in the image.

[0059] Similarly, the second light-isolating plate 42 can prevent the light emitted by the second fill light 32 from interfering with the image acquisition device 20, ensuring that the collected palm prints and palm veins are not affected by other light sources, thereby improving the contrast and clarity of the image. On the other hand, it can also prevent reflection and scattering, avoid reflection and refraction of light between different surfaces, and thus reduce noise and interference in the image collected by the image acquisition device 20.

[0060] like Figure 5 As shown, in some embodiments of the present application, the palm recognition component further includes: a light homogenizing plate 50.

[0061] The light homogenizing plate 50 is disposed on the mounting frame 10 , and the disposition position of the light homogenizing plate 50 corresponds to the position of the first fill light component 31 .

[0062] The light passes through the light-homogenizing plate 50 and, under its action, converts the point light source emitted by the first fill light component 31 into a uniform surface light source, thereby achieving uniform fill light for the palm. First, uniform fill light can ensure that all parts of the palm print are fully illuminated, avoiding shadows or overly bright areas, thereby improving the quality and clarity of the palm print image. In this way, the details and features of the palm print can be captured more accurately, improving the recognition accuracy. Secondly, uniform fill light can reduce the impact of reflections and glare, making the palm print image more stable and reliable. This helps to avoid misidentification or recognition failure caused by light reflection or refraction. In addition, uniform fill light for the palm print can also improve the versatility and adaptability of the palm recognition component. Whether in different lighting environments or for people with different skin colors and palm sizes, uniform fill light can provide relatively consistent lighting conditions and reduce recognition errors caused by individual differences.

[0063] like Figure 5 As shown, in some embodiments of the present application, a groove 51 is provided on the surface of the light homogenizing plate 50 that is opposite to the first fill light component 31 , so that the surface is uneven.

[0064] The above-mentioned surface is uneven. First, the uneven surface can change the reflection and scattering mode of light, thereby achieving a more uniform light distribution. This can avoid the appearance of bright and dark areas and improve the overall quality of the palm print image. Secondly, the uneven surface can also increase the incident angle and reflection angle of light, so that the light can better cover all parts of the palm print. This helps to capture more details and features and improve the recognition accuracy. Thirdly, the uneven surface can also scatter light and reduce the impact of reflection and glare. This can improve the stability and reliability of the palm print image and reduce the false recognition rate.

[0065] like Figure 5 As shown, in some embodiments of the present application, the palm recognition component further includes: a glass cover plate 60 .

[0066] The glass cover plate 60 is disposed on the mounting frame 10 , and the disposition position of the glass cover plate 60 corresponds to the position of the second fill light element 32 .

[0067] A filter layer is disposed on the surface of the glass cover plate 60 , and the filter layer is configured to filter out other light except infrared light.

[0068] The filter layer filters out other light except infrared light, reducing the impact of other stray light on palm vein recognition. On the one hand, it can improve the recognition accuracy and reduce the impact of interference factors. This can ensure that the system can more accurately identify individuals and enhance security. On the other hand, removing stray light can improve image quality, make palm vein features more clearly visible, and help better analysis and comparison, thereby improving the stability and reliability of the system and reducing the possibility of misidentification and misjudgment.

[0069] In some embodiments of the present application, the mounting frame is a metal frame, and heat dissipation fins are provided on the mounting frame.

[0070] Each component will generate a lot of heat when working. The metal frame can quickly absorb the heat energy generated by the components and diffuse it into the air. In addition, the heat dissipation fins can speed up the diffusion of heat from the metal frame into the air, thereby reducing the impact of temperature on the product.

[0071] like Figure 6 As shown, in some embodiments of the present application, the image acquisition device 20 further includes: a dual-bandpass filter 22 .

[0072] The dual-bandpass filter 22 is disposed at a position corresponding to that of the image sensor 21 , and is configured to filter light entering the image sensor 21 so that light emitted by the first fill light component 31 and light emitted by the second fill light component 32 can be collected by the image sensor 21 .

[0073] The dual-bandpass filter 22 can filter out light other than the light emitted by the first fill light component 31 and the light emitted by the second fill light component 32, thereby avoiding the influence of stray light on the image collected by the image sensor 21, improving the quality and clarity of the palm print and palm vein images, so that the details and features of the palm print can be captured more accurately, and the recognition accuracy can be improved.

[0074] The palm recognition component works as follows:

[0075] When using the palm recognition component, the first fill light and the second fill light emit light to the object (hand), and the light reflected by the object (hand) enters the image acquisition device. After being filtered by the dual-bandpass filter, the blue light and infrared light can reach the image sensor. After photoelectric conversion, the image sensor can obtain a visible light image through the blue light and an infrared image through the infrared light. The image sensor alternately senses visible light and infrared light, and can alternately generate visible light images and infrared images. That is, within a period of time, the image sensor can respectively obtain visible light images and infrared images of the object (hand) at different times. And the first fill light fills the object when the image sensor senses visible light, and the second fill light fills the object when the image sensor senses infrared light, so that the reflected light of the object is sufficient, the imaging effect of the image sensor is better, and it can be applied to image acquisition in dark environments.

[0076] An embodiment of the present application provides a recognition device, including the palm recognition component mentioned above.

[0077] The recognition device has a high recognition rate, thereby improving the recognition speed and accuracy of the product, and further improving the comfort of using the product.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A palm recognition component, characterized in that: The palm recognition component comprises: Mounting frame; An image acquisition device, the image acquisition device is arranged at a non-central point of the mounting surface of the mounting frame and is arranged adjacent to the central point of the mounting surface, the image acquisition device includes an image sensor, and the image sensor is configured to acquire a palm print image and a palm vein image of a palm; A first fill light component, which is disposed on the mounting surface and along the circumference of the image acquisition device, and is configured to emit blue light to a palm; and A second fill light component is arranged on the installation surface and along the circumference of the image acquisition device. The second fill light component is located between the image acquisition device and the first fill light component. The second fill light component is configured to emit infrared rays to the palm.

2. The palm recognition component according to claim 1, characterized in that: The wavelength of the blue light is 460 nm, and / or the wavelength of the infrared light is 850 nm.

3. The palm recognition component according to claim 1, characterized in that: The image sensor is a black and white image sensor.

4. The palm recognition component according to claim 1, characterized in that: A first light-isolating plate is disposed between the first fill-light component and the second fill-light component; A second light-isolating plate is arranged between the second fill light component and the image acquisition device.

5. The palm recognition component according to claim 1, characterized in that: The palm recognition component further includes: a light averaging plate, which is arranged on the mounting frame, and the arrangement position of the light averaging plate corresponds to the position of the first fill light component.

6. The palm recognition component according to claim 5, characterized in that: A groove is arranged on the surface of the light homogenizing plate opposite to the first fill light component, so that the surface is uneven.

7. The palm recognition component according to claim 1, characterized in that: The palm recognition component further includes: a glass cover plate, the glass cover plate is arranged on the mounting frame, and the arrangement position of the glass cover plate corresponds to the position of the second fill light component; A filter layer is disposed on the surface of the glass cover plate, and the filter layer is configured to filter out other light except infrared light.

8. The palm recognition component according to claim 1, characterized in that: The mounting frame is a metal frame, and heat dissipation fins are arranged on the mounting frame.

9. The palm recognition component according to claim 1, characterized in that: The image acquisition device also includes: a dual-bandpass filter, the setting position of the dual-bandpass filter corresponds to the position of the image sensor, and the dual-bandpass filter is configured to filter the light entering the image sensor so that the light emitted by the first fill light component and the light emitted by the second fill light component can be collected by the image sensor.

10. An identification device, characterized in that: The invention comprises a palm recognition component as claimed in any one of claims 1 to 9.

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