中文摘要：

目的依据人类视觉特点，对中医舌色随疾病发展程度的变化进行量化。方法利用等级排列法等心理物理方法对中医舌色进行实验以获得舌色的心理感知量，并用多项式回归和支持向量机回归两种方法分别建立舌色物理刺激量与舌色心理感知量的数学模型，从而得到舌色感知量随舌色刺激量变化间的关系。结果由数学模型得到的心理量表与舌色变化的视觉感知是一致的，且支持向量机的回归精度更高。结论通过心理量表不仅可在疾病的变化发展中定量评价舌色，而且可量化疾病的证候程度，辅助医生对疾病证候进行判断和治疗。

英文摘要：

Objective To quantify the changes of tongue color with the development of the disease according to the characteristics of human vision. Methods Psychological scales of tongue color perception were obtained from the psychophysical experiments. Polynomial regression and support vector regression （SVR） were used to establish the mathematical model between the physical values and the psychological scales of tongue color. Results The psychological scales exported from the model could correspond to the visual perception of tongue color change, and SVR has higher accuracy. Conclusions The psychological scale, can not only quantitatively evaluate the tongue color in the development of the disease, but also quantify the degree of disease, to assist the doctors for disease diagnosis and treatment.