Colorimetric card-based tongue diagnosis image calibration method and calibration tool

Abstract

The invention discloses a colorimetric card-based tongue diagnosis image calibration method and a calibration tool, and relates to the technical field of tongue diagnosis image calibration, in particular to a tool-based tongue diagnosis image calibration method, which comprises the following steps of: S1, receiving images of a tongue body and a tongue diagnosis colorimetric card, which are acquired at the same time or under the same condition; s2, identifying the peripheral identification of the tongue diagnosis colorimetric card and standardizing the posture of the colorimetric card: identifying the peripheral identification of the colorimetric card to determine the position of a color card picture; rotating the image to obtain a standard attitude colorimetric card; s3, reading color block information of the colorimetric card; s4, training a calibration model, and screening a hyper-parameter tuning model; and S5, correcting the color of the tongue body. According to the method, the adaptability of a calibration algorithm to illumination, saturation and hue deviation in a complex scene is obviously improved, and a calibration function can be flexibly fitted by adopting a data driving mode under the condition of complex change of multiple components of an image, so that a calibration model can be applicable to wider and more complex conditions.

Description

technical field [0001] The invention relates to the technical field of tongue diagnosis image calibration, in particular to a color card-based tongue diagnosis image calibration method and a calibration tool. Background technique [0002] Observation is one of the four means of diagnosis in traditional Chinese medicine. Looking at complexion and tongue are commonly used techniques in clinical practice of traditional Chinese medicine. Looking at complexion refers to the doctor's judgment of the overall health or the corresponding internal organs by observing the color changes of the patient's face. The health status of the patient; tongue diagnosis refers to the doctor's observation of the patient's tongue color and changes in the tongue coating, so as to judge the overall health, the deficiency and excess of the viscera, and the outcome and prognosis of the disease. However, the traditional inspection method mainly uses doctors to directly observe the face and tongue, and th...

AI Technical Summary

Problems solved by technology

This method first requires complex white balance correction, and the algorithm is complex

Secondly, because it uses a color card commonly used in the color industry, it is not specially suitable for tongue diagnosis, that is, there is no color value of normal tongue, and there is no color value of diseased tongue; even if some color cards include normal tongue color value, but the color value relationship between the color blocks is not specially constrained, so the correction effect is limited, and the obtained tongue image cannot accurately reflect the real tongue color, resulting in the risk of misdiagnosis

Again, the least squares method is not suitable for the calibration of tongue images

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