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KMID : 0608520080140030089
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Korean Journal of Oriental Medicine
2008 Volume.14 No. 3 p.89 ~ p.95
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Development of System Configuration and Diagnostic Methods for Tongue Diagnosis Instrument
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Kim Keun-Ho
Kim Jong-Yeol
Ryu Hyun-Hee
Do Jun-Hyeong
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Abstract
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A tongue shows physiological and clinicopathological changes of inner organs. Visual inspection of a tongue is not only convenient but also non-invasive. To develop an automatic tongue diagnosis system for an objective and standardized diagnosis, the separation of the tongue area from a facial image and the detection of coatings, spots and cracks are inevitable but difficult since the colors of a tongue, lips, and skin in a mouth as well as those of tongue furs and body are similar. The proposed method includes preprocessing with down-sampling and edge enhancement, over-segmentation, detecting positions with a local minimum over shading from the structure of a tongue, and correcting local minima or detecting edge with color difference. The proposed method produces the region of a segmented tongue, and then decomposes the color components of the region into hue, saturation and brightness, resulting in classifying the regions of tongue furs(coatings) into kinds of coatings and substance and segmenting them. Spots are detected by using local maxima and the variation of saturation, and cracks are searched by using local minima and the directivity of dark areas in brightness. The results illustrate the segmented region with effective information, excluding a non-tongue region and also give us accurate discrimination of coatings and the precise detection of spots and cracks. It can be used to make an objective and standardized diagnosis for an u-Healthcare system as well as a home care system.
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KEYWORD
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Tongue diagnosis, Separation of tongue area, Separation of tongue body and tongue fur, Detection of spots and cracks, System configuration
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