CN113425259A - Multispectral tongue picture collecting system with high spatial resolution - Google Patents
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Abstract
The invention relates to a multispectral tongue picture collecting system with high spatial resolution, which comprises a tongue picture collecting device and terminal equipment, wherein the tongue picture collecting device is connected with the terminal equipment and comprises at least one dark box, an RGB (red, green, blue) image collecting module, a multispectral image collecting module, a light source radiation mechanism and an optical light splitting mechanism are arranged in the dark box, and the dark box is provided with a collecting port corresponding to the position of a tongue of a collector; the terminal equipment controls the light source radiation mechanism to irradiate the tongue of an acquirer, reflected light of the tongue is divided into reflected light and transmitted light at the optical light splitting mechanism and is respectively transmitted to the RGB image acquisition module and the multispectral image acquisition module, the RGB image acquisition module and the multispectral image acquisition module send acquired image data to the terminal equipment, and the terminal equipment processes the received image data to obtain a multispectral image with high spatial resolution. The invention can obtain the multispectral tongue picture with high spatial resolution.
Description
Technical Field
The invention relates to the technical field of tongue image acquisition, in particular to a multispectral tongue image acquisition system with high spatial resolution.
Background
The tongue diagnosis is an important means for the first four diagnoses in traditional Chinese medicine, i.e., inspection, sniffing, inquiry and resection, and doctors can determine the physical condition of patients by observing the color of the tongue, teeth marks, cracks, fatness and thinness and other appearances. The tongue diagnosis relies on the visual observation of doctors to perform diagnosis and analysis, lacks an objective and quantitative means, and becomes a factor restricting the standardization of the tongue diagnosis.
The tongue diagnosis instrument is used as instrument equipment for tongue picture diagnosis, uses an optical sensor to record images and collect data, can assist traditional Chinese medicine to a certain extent, and is an important means for informatization of tongue diagnosis of traditional Chinese medicine. The existing tongue diagnosis instrument generally adopts an RGB camera to collect color images, and is mainly innovated in aspects of miniaturization, light source simulation of natural light, three-dimensional collection of images, standardization of test conditions, different image processing algorithms and the like. Because the RGB camera only collects images of three wavelengths, the problem of incomplete spectrum exists, and the problems of characteristic wavelength image collection of the tongue coating and the tongue proper and low chromatic aberration resolution ratio in the traditional Chinese medicine can not be realized. In order to solve the problem, a multispectral or hyperspectral tongue diagnosis instrument becomes a new research direction of a tongue diagnosis acquisition system, however, the current multispectral tongue diagnosis instrument has the problems of low spatial resolution, long acquisition time and data redundancy, influences the acquisition and analysis of shape and texture information of a tongue coating and a tongue proper, and becomes a problem to be solved by the popularization and application of the tongue diagnosis of traditional Chinese medicine under the current major trend of informatization of traditional Chinese medicine.
Based on the problems of the RGB camera, the multispectral and hyperspectral tongue diagnosis instruments and the urgent requirements of the tongue diagnosis in traditional Chinese medicine on the color, shape, texture and characteristic wavelength image information of the tongue coating and tongue proper, a spectrum tongue picture acquisition system needs to be deeply researched and developed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a multispectral tongue picture collecting system with high spatial resolution, wherein an RGB camera and a multispectral camera are arranged in a tongue picture collecting device to collect a target in a same visual field, so that the multispectral tongue picture with high spatial resolution can be obtained.
The technical scheme adopted by the invention for solving the technical problems is as follows: the multispectral tongue picture acquisition system with high spatial resolution comprises a tongue picture acquisition device and terminal equipment, wherein the tongue picture acquisition device is connected with the terminal equipment and comprises at least one dark box, an RGB (red, green, blue) image acquisition module, a multispectral image acquisition module, a light source radiation mechanism and an optical light splitting mechanism are arranged in the dark box, and the dark box is provided with an acquisition port corresponding to the position of the tongue of an acquirer; the terminal equipment controls the light source radiation mechanism to irradiate the tongue of an acquirer, reflected light of the tongue is divided into reflected light and transmitted light at the optical light splitting mechanism, the transmitted light is transmitted to the RGB image acquisition module through the optical light splitting mechanism, the reflected light is transmitted to the multispectral image acquisition module through the optical light splitting mechanism, the RGB image acquisition module and the multispectral image acquisition module send acquired image data to the terminal equipment, and the terminal equipment performs image registration and image fusion on the received image data to obtain a multispectral image with high spatial resolution.
The camera bellows still is provided with the collection object fixing device corresponding with the collection port in the below of gathering the port, gather object fixing device including the chin strap that is used for supporting the person's of gathering the chin with set up in the elevating platform of chin strap bottom, the elevating platform is used for adjusting the height that the chin strap held in the palm to make the tongue of gathering the person be fixed in gather in the port.
The terminal equipment is provided with a data acquisition device, and the data acquisition device comprises a light source control module for controlling the on-off of a light source radiation mechanism, an image acquisition module for acquiring image data acquired by the RGB image acquisition module and the multispectral image acquisition module, an image fusion module for carrying out image registration and image fusion on the image data acquired by the image acquisition module, an identification processing module for carrying out identification processing on the image data fused by the image fusion module so as to acquire characteristic information, and an analysis module for carrying out diagnosis according to the characteristic information acquired by the identification processing module.
The image fusion module comprises an image registration unit and an image fusion unit, the image registration unit is used for carrying out image registration on the image data collected by the RGB image collection module and the multispectral image collection module, and the image fusion unit is used for carrying out image fusion on the image data after image registration to obtain a multispectral image with high spatial resolution.
The algorithm adopted by the image registration unit comprises a feature-based registration method and a deep learning algorithm; the algorithm adopted by the image fusion unit comprises HSV conversion, Brovey conversion, product operation, PCA conversion, Gram-schmidt or Panshipening.
The light source radiation mechanism is a high-angle annular shadowless light source radiation mechanism, the radiation angle of the light source radiation mechanism is 30-60 degrees, the illuminance is 500 lx-13000 lx, the color temperature is 3000K-7000K, and the wavelength is 400 nm-760 nm.
The optical light splitting mechanism is a flat plate beam splitter, a polarization beam splitter or a non-polarization beam splitter; the included angle between the optical light splitting mechanism and the imaging light path is 45 degrees.
The light source radiation mechanism is positioned between the acquisition port and the optical light splitting mechanism.
The inner surface of the dark box is subjected to blackening treatment.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: the tongue picture collecting system provided by the invention collects the target in the same visual field by arranging the RGB image collecting module (RGB camera) and the multispectral image collecting module (multispectral camera) in the tongue picture collecting device, and finally obtains the multispectral tongue picture with high spatial resolution; the multispectral tongue picture with high spatial resolution obtained by the invention can provide richer tongue picture spectral characteristics, and is beneficial to realizing quantitative analysis of traditional Chinese medicine diagnosis.
Drawings
FIG. 1 is a schematic diagram of a tongue image acquisition system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a tongue image acquisition device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an acquisition object fixing device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a data acquisition device according to an embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Embodiments of the present invention relate to a high spatial resolution multi-spectral tongue picture acquisition system, particularly suitable for the field of color or characteristic wavelength image detection requiring high spatial resolution, see figures 1 and 2, the system comprises a tongue image acquisition device 200 and a terminal device 100, wherein the tongue image acquisition device 200 and the terminal device 100 are communicated through a cable, the tongue image collecting device 200 comprises at least one dark box 23, the inner surface of the dark box 23 is blackened to inhibit stray light, the dark box 23 is internally provided with an RGB image acquisition module (RGB camera) 21, a multispectral image acquisition module (multispectral camera) 22, a light source radiation mechanism 24 and an optical light splitting mechanism 25, the dark box 23 is provided with a collection port 26 corresponding to the tongue position of the collector, and the light source radiation mechanism 24 is positioned between the collection port 26 and the optical splitting mechanism 25; the terminal device 100 controls the light source radiation mechanism 24 to irradiate the tongue of the acquirer, reflected light of the tongue is divided into reflected light and transmitted light at the optical light splitting mechanism 25, the transmitted light is transmitted to the RGB image acquisition module 21 through the optical light splitting mechanism 25, the reflected light is transmitted to the multispectral image acquisition module 22 through the optical light splitting mechanism 25, the RGB image acquisition module 21 and the multispectral image acquisition module 22 send acquired image data to the terminal device 100, the terminal device 100 obtains a multispectral image with high spatial resolution after processing the received image data, analysis of the tongue coating and the tongue quality is achieved, and finally a diagnosis result is obtained.
Furthermore, the imaging light path of the multispectral image acquisition module 22 and the imaging light path of the RGB image acquisition module 21 are coaxial acquisition light paths, and the simultaneous field-of-view acquisition of the RGB image acquisition module 21 and the multispectral image acquisition module 22 is realized based on the optical spectroscopic mechanism 25, and after the RGB image and the multispectral image of the target object are acquired, image registration and image fusion are realized through the terminal device 100, so that a multispectral tongue image with high spatial resolution can be obtained; the multispectral camera is in a single-lens working mode, and optical splitting is realized by integrating an optical filter, an optical filter rotating disc and a variable optical filter on a chip.
Further, the light source radiation mechanism 24 is a high-angle annular shadowless light source radiation mechanism (including but not limited to LED lamps, fluorescent lamps and incandescent lamps) and is at least one in number, the radiation angle of the light source radiation mechanism 24 is 30-60 °, the illuminance is 500 lx-13000 lx, the color temperature is 3000K-7000K, and the wavelength is 400 nm-760 nm.
Further, the optical splitting mechanism 25 is a flat plate beam splitter, a polarizing beam splitter or a non-polarizing beam splitter; the included angle between the optical light splitting mechanism 25 and the imaging light path is 45 degrees.
Referring to fig. 3, the dark box 23 is further provided with a collecting object fixing device corresponding to the collecting port 26 below the collecting port 26, and the collecting object fixing device has a position adjusting function and can adjust the position of the target object relative to the collecting port 26. The acquisition object fixing device comprises a chin rest 262 for supporting the chin of an acquirer and an elevating platform 263 arranged at the bottom of the chin rest 262, wherein the elevating platform 263 is used for adjusting the height of the chin rest 262 so as to enable the tongue of the acquirer to be fixed in the acquisition port 26, and the tongue of the acquirer can flexibly enter and exit from the acquisition port 26, thereby being beneficial to standardization of a testing distance and lighting conditions; the bottom of the lifting platform 263 is further provided with a fixing plate 261.
Referring to fig. 4, the terminal device 100 is provided with a data acquisition device, the data acquisition device interacts with the tongue image acquisition device 200, and the data acquisition device analyzes tongue fur and tongue quality through the acquired image data, and finally obtains a diagnosis result. The data acquisition device comprises a light source control module 410 for controlling the on and off of a light source radiation mechanism 24, an image acquisition module 420 for acquiring image data acquired by the RGB image acquisition module 21 and the multispectral image acquisition module 22, an image fusion module 430 for performing image registration and image fusion on the image data acquired by the image acquisition module 420, an identification processing module 440 for performing identification processing on the image data fused by the image fusion module 430 to acquire feature information, and an analysis module 450 for performing diagnosis according to the feature information acquired by the identification processing module 440. The working mode of the data acquisition device is as follows: the light source control module 410 is used for controlling the light source radiation mechanism 24 to be turned on and off, after the light source radiation mechanism 24 is turned on, the image acquisition module 420 synchronously triggers the RGB camera and the multispectral camera to shoot RGB images and multispectral images in real time, the image fusion module 430 is used for carrying out image registration and image fusion on the acquired RGB images and the multispectral images to obtain multispectral images with RGB image spatial resolution, the recognition processing module 440 is used for carrying out recognition processing such as segmentation, waveband calculation and feature extraction on the fused images to obtain feature information such as color, shape and texture of a target object, and the analysis module 450 analyzes the acquired tongue image feature information according to the diagnosis model and the traditional Chinese medicine tongue image feature set to obtain a diagnosis result of the target object.
Further, the image fusion module 430 has functions of image registration and image fusion, and can obtain a multispectral image with high spatial resolution after image registration and image fusion, so as to provide more accurate color characteristics for tongue diagnosis in traditional Chinese medicine; the image registration adopts algorithms including but not limited to feature-based registration method and deep learning algorithm, and the image fusion adopts algorithms including but not limited to HSV transformation, Brovey transformation, product operation, PCA transformation, Gram-schmidt and Pansharpening. In the embodiment, pixel-level image registration can be performed through a Polynomial algorithm, and then image fusion is performed through PCA (principal component analysis) transformation, so that a multispectral image with high spatial resolution is obtained.
Therefore, the tongue picture acquisition system provided by the invention has the advantages that the RGB camera and the multispectral camera are arranged in the tongue picture acquisition device to acquire the target in the same visual field, and finally, the multispectral tongue picture with high spatial resolution can be obtained, so that the quantitative analysis of the traditional Chinese medicine diagnosis can be realized.
Claims (9)
1. The multispectral tongue picture collecting system with high spatial resolution is characterized by comprising a tongue picture collecting device (200) and terminal equipment (100), wherein the tongue picture collecting device (200) is connected with the terminal equipment (100), the tongue picture collecting device (200) comprises at least one dark box (23), an RGB image collecting module (21), a multispectral image collecting module (22), a light source radiation mechanism (24) and an optical light splitting mechanism (25) are arranged in the dark box (23), and a collecting port (26) corresponding to the tongue position of a collector is formed in the dark box (23); the terminal device (100) controls the light source radiation mechanism (24) to irradiate the tongue of the collector, reflected light of the tongue is divided into reflected light and transmitted light at the optical light splitting mechanism (25), the transmitted light is transmitted to the RGB image acquisition module (21) through the optical light splitting mechanism (25), the reflected light is transmitted to the multispectral image acquisition module (22) through the optical light splitting mechanism (25), the RGB image acquisition module (21) and the multispectral image acquisition module (22) send acquired image data to the terminal device (100), and the terminal device (100) performs image registration and image fusion on the received image data to obtain a multispectral image with high spatial resolution.
2. The high spatial resolution multispectral tongue picture acquisition system according to claim 1, wherein the dark box (23) is further provided with an acquisition object fixing device corresponding to the acquisition port (26) below the acquisition port (26), the acquisition object fixing device comprises a chin rest (262) for supporting the chin of the acquirer and an elevating platform (263) arranged at the bottom of the chin rest (262), and the elevating platform (263) is used for adjusting the height of the chin rest (262) so as to fix the tongue of the acquirer in the acquisition port (26).
3. The high spatial resolution multi-spectral tongue image acquisition system according to claim 1, the terminal device (100) is provided with a data acquisition device, the data acquisition device comprises a light source control module (410) for controlling the on and off of a light source radiation mechanism (24), an image acquisition module (420) for acquiring image data acquired by the RGB image acquisition module (21) and the multispectral image acquisition module (22), an image fusion module (430) for carrying out image registration and image fusion on the image data acquired by the image acquisition module (420), and an identification processing module (440) for carrying out identification processing on the image data fused by the image fusion module (430) to acquire characteristic information, and an analysis module (450) for diagnosing according to the characteristic information obtained by the identification processing module (440).
4. The high spatial resolution multi-spectral tongue picture acquisition system according to claim 3, wherein the image fusion module (430) comprises an image registration unit and an image fusion unit, the image registration unit is configured to perform image registration on the image data acquired by the RGB image acquisition module (21) and the multi-spectral image acquisition module (22), and the image fusion unit is configured to perform image fusion on the image data after image registration to obtain the high spatial resolution multi-spectral image.
5. The high spatial resolution multi-spectral tongue picture acquisition system according to claim 4 wherein the algorithms employed by said image registration unit include feature-based registration methods and deep learning algorithms; the algorithm adopted by the image fusion unit comprises HSV conversion, Brovey conversion, product operation, PCA conversion, Gram-schmidt or Panshipening.
6. The high spatial resolution multi-spectral tongue picture acquisition system according to claim 1 wherein the light source radiation mechanism (24) is a high angle annular shadowless light source radiation mechanism, the light source radiation mechanism (24) has a radiation angle of 30-60 °, an illuminance of 500 lx-13000 lx, a color temperature of 3000K-7000K, and a wavelength of 400 nm-760 nm.
7. The high spatial resolution multi-spectral tongue image acquisition system according to claim 1 wherein the optical beam splitting mechanism (25) is a plate beam splitter, a polarizing beam splitter or a non-polarizing beam splitter; the included angle between the optical light splitting mechanism (25) and the imaging light path is 45 degrees.
8. The high spatial resolution multi-spectral tongue image acquisition system according to claim 1 wherein the source radiation mechanism (24) is located between the acquisition port (26) and the optical splitting mechanism (25).
9. The high spatial resolution multi-spectral tongue image acquisition system according to claim 1 wherein the inner surface of the dark box (23) is blackened.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116849612A (en) * | 2023-07-07 | 2023-10-10 | 广东省新黄埔中医药联合创新研究院 | Multispectral tongue picture image acquisition and analysis system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116849612A (en) * | 2023-07-07 | 2023-10-10 | 广东省新黄埔中医药联合创新研究院 | Multispectral tongue picture image acquisition and analysis system |
| CN116849612B (en) * | 2023-07-07 | 2024-01-09 | 广东省新黄埔中医药联合创新研究院 | Multispectral tongue picture image acquisition and analysis system |
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