Abstract
A novel tongue color analysis system for medical applications is introduced in this chapter. Using the tongue color gamut , tongue foreground pixels are first extracted and assigned to one of 12 colors representing this gamut. The ratio of each color for the entire image is calculated and forms a tongue color feature vector . Experimenting on a large dataset consisting of 143 Healthy and 902 Disease (13 groups of more than 10 samples and one miscellaneous group), a given tongue sample can be classified into one of these two classes with an average accuracy of 91.99%. Further testing showed that Disease samples can be split into three clusters, and within each cluster most if not all the illnesses are distinguished from one another. In total, 11 illnesses have a classification rate greater than 70%. This demonstrates a relationship between the state of the human body and its tongue color.
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Zhang, D., Zhang, H., Zhang, B. (2017). Tongue Color Analysis for Medical Application. In: Tongue Image Analysis. Springer, Singapore. https://doi.org/10.1007/978-981-10-2167-1_11
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DOI: https://doi.org/10.1007/978-981-10-2167-1_11
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