Tongue image environment adaptive color reproduction method of traditional Chinese medicine

A technology of environmental adaptability and environmental adaptation, applied in the field of medical image processing, can solve problems that affect the judgment of doctors' illnesses, inconsistent tongue color, etc.

Active Publication Date: 2013-05-15
BEIJING UNIV OF TECH
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Problems solved by technology

Due to the different properties of the imaging equipment and the observation environment, the color of the tongue image displa...

Method used

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  • Tongue image environment adaptive color reproduction method of traditional Chinese medicine
  • Tongue image environment adaptive color reproduction method of traditional Chinese medicine
  • Tongue image environment adaptive color reproduction method of traditional Chinese medicine

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Embodiment Construction

[0048] This implementation method is completed in a TCM tongue image collection and display system composed of a standard D65 light source, a digital camera, a mechanical platform, and a computer system. The specific implementation process is as follows:

[0049] 1. Establishment of image acquisition characteristic model

[0050] 1) Put the standard color palette (such as color checker24) in the tongue image acquisition system, use the system's own digital camera to capture the color palette image, and extract the RGB average value of each color block. Use a colorimeter PR650 to measure the tristimulus value XYZ of each color patch, and normalize the tristimulus value so that the Y value of the white patch with a spectral reflectance of 1 is 100.

[0051] 2) Establish sampling points according to the RGB average value of each gray color block in the color palette and Y in the tristimulus value, and then use the cubic spline interpolation algorithm to establish the R, G, B thr...

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Abstract

The invention provides a tongue image environment adaptive color reproduction method of traditional Chinese medicine and belongs to the field of medical image processing. The method comprises the steps of at first, shooting a special color plate image under the same image collection condition and measuring standard colorimetric values of color lumps in the special color plate by colorimeter; establishing a collection process color characterization model through color plate image data in a computer to realize conversion between equipment color space and standard chroma space; and then calculating displayed image chroma tristimulus values by a visual adaption model according to measured obtained image collection environment and displayed environmental parameter which is determined through combination with a background adaption parameter determined by tongue image structure prior knowledge. The method is similar to collection process characterization in that through display of a group of color lump on a displayer and measurement of standard chroma value of displayed color lump, establishment of the collection process color characterization model, and calculation of the display drive value corresponding to chroma tristimulus value. With the tongue image environment adaptive color reproduction method of traditional Chinese medicine , adaptive true color reproduction of tongue images is finally achieved.

Description

technical field [0001] The invention belongs to the field of medical image processing. It is to apply a method of using computer technology and digital image processing technology to realize the true color reproduction of images in the field of tongue image in traditional Chinese medicine. The human eye is self-adaptive when observing colors, and can automatically adjust to the most realistic visual perception according to different lighting and environmental factors. However, in the study of the objectivity of traditional Chinese medicine, due to the influence of equipment attributes and observation environment factors, the color of the tongue image is inconsistent with the perception of the human eye. The method can reproduce the true color of the tongue image by characterizing the image input and output devices and using the method of color vision perception model to consider factors including illumination, background and observation environment. [0002] Using digital im...

Claims

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Application Information

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IPC IPC(8): G06T7/40G06T5/00
Inventor 蔡轶珩唐超吕慧娟郭松张新峰卓力
Owner BEIJING UNIV OF TECH
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