Traditional Chinese medicine tongue body and tongue coating separation method based on green monochromatic source

Abstract

The invention belongs to the field of image processing and image analyzing and understanding, and particularly relates to a traditional Chinese medicine tongue body and tongue coating separation method based on a green monochromatic source. A tongue image acquisition system is established; tongue images acquired under a white light source and the green light source are collected; the tongue body portions of the tongue images extracted under the white light source and the green light source are respectively collected; image registration based on mutual information is performed on the two tongue body images; all the portions on a tongue body are totally aligned with one another; tongue body and tongue coating separation is performed on a tongue image acquired under the green light source; a tongue coating on the white light source is extracted in a masking mode through the tongue coating position information obtained through separation of the green light source. The method has the advantages that RGB images are converted into gray level images, then, histogram equalization is performed, image contrast is increased so that the tongue coating portion can be prominent, and stimulation on a tested person caused by light source changes and differences of two tongue images caused by tongue body shaking and tongue position changes are further reduced through an image registration method, wherein the tongue body shaking and the tongue position changes are caused by personal factors of the tested person.

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

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