基于光度立体法的中医舌体三维表面重建

蔡轶珩; 张琳琳; 盛楠; 张新峰; 王立娜

doi:10.11999/JEIT150124

基于光度立体法的中医舌体三维表面重建

doi: 10.11999/JEIT150124

基金项目:

国家自然科学基金(61201360)

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- 被引次数: 0
出版历程
- 收稿日期: 2015-01-22
- 修回日期: 2015-07-15
- 刊出日期: 2015-11-19

3D Reconstruction of Tongue Surface Based on Photometric Stereo Method

Funds:

The National Natural Science Foundation of China(61201360)

摘要

摘要: 在中医舌诊客观化研究进程中，以2维舌图像为基础进行分析所获得的舌体特征信息有限，制约了舌诊的客观化发展。在将光度立体法用于静态舌模型表面3维重建的可行性研究基础之上，为了对真实舌体表面进行3维重建，该文设计一种舌体3维动态信息采集系统，用于舌像采集；然后采用光度立体法依次求出舌体表面的法向量、纹理反射率和深度信息，并基于DirectX进行3维显示；最后针对舌体表面高光区域对重建结果的影响，采用高光剔除算法剔除高光。经高光剔除后的重建结果和原来相比，在重建精度和鲁棒性等方面都有更好的表现。经实验证实，该重建方法的平均相对误差约为7.24%，重建结果可形象地表达舌体的表面形态和齿痕等细节信息，可辅助中医进行诊断。
- 图像处理 /
- 光度立体法 /
- 3维重建 /
- 高光 /
- 表面法向 /
- 舌诊客观化
Abstract: In the process of the objective research in traditional Chinese medicine tongue diagnosis, the tongue information obtained from the analysis of 2D tongue image is limited. It restricts the development of tongue diagnosis. Based on the feasibility of photometric stereo method to reconstruct the static tongue mode, for reconstructing the 3D surface of the real tongue, a dynamic information collection system is designed for image information acquisition. Then the normal vectors, texture reflectance and depth values are obtained with photometric stereo method, and the 3D surface of tongue is displayed based on DirectX. Finally, a highlight excluding algorithm is used to reduce the effects of the highlight areas on the reconstruction results. After the highlight excluding, it performs better in the reconstruction accuracy and robustness aspects. Experimental results indicate that the average relative error of this algorithm is of 7.24%. The results can express the tongue surface morphology and details such as tooth marks visually.
- Image processing /
- Photometric stereo method /
- 3D reconstruction /
- Highlight /
- Surface normal /
- Tongue characterization

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参考文献(30)

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