A method for separating tongue and coating in traditional Chinese medicine based on green monochromatic light source

Abstract

The invention belongs to the field of image processing and image analysis and understanding, and in particular relates to a method for separating the tongue and coating in traditional Chinese medicine based on a green monochromatic light source. A tongue image collection system is built to collect tongue images under white light source and green light source, and extract white light source and green light source respectively. For the tongue body part of the tongue image under the green light source, image registration based on mutual information is performed on the two tongue body images, so that all parts on the tongue body are completely aligned. The obtained tongue coating position information is masked to extract the tongue coating on the white light source. Beneficial effects of the present invention: convert the RGB image into a grayscale image and then perform histogram equalization, increase the contrast of the image to highlight the part of the tongue coating, and adopt the image registration method to further reduce the stimulation caused by the change of the light source and the subject's own reasons The difference between the two tongue images caused by tongue shaking and tongue position changes.

Description

technical field [0001] The invention belongs to the field of image processing and image analysis and understanding, and relates to a method for separating the tongue and coating in traditional Chinese medicine based on a green monochromatic light source. Background technique [0002] "Distinguishing the quality of the tongue can distinguish the deficiency and excess of viscera, and inspecting the coating of the tongue can detect the depth of the six evils." Tongue diagnosis is one of the unique and most valuable diagnostic methods in traditional Chinese medicine, and it is necessary to strive to inherit and develop it. In TCM theory, the tongue is divided into the tip of the tongue, the middle of the tongue, the base of the tongue, and the side of the tongue. Each part is connected to the meridians of the heart, lung, spleen and stomach, kidney, and liver and gallbladder. If there is any disease in the internal organs, it can be directly reflected on the tongue. Therefore, T...

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Problems solved by technology

[0005] In view of the above existing problems, the purpose of the present invention is to collect tongue images under a green light monochromatic light source, and to separate the tongue from the tongue coating on the obtained monochromatic light images, thereby solving the unsatisfactory separation effect caused by the above situation. problem, further improve the adaptability of the tongue coating separation method, and ultimately improve the accuracy of feature recognition

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