Shape reconstruction from an endoscope image by shape-from-shading technique for a point light source at the projection center

Koichiro Deguchi, Takayuki Okatani

研究成果: Paper

22 引用 (Scopus)

抜粋

This paper describes an approach to reconstructing a shape from it's shaded image in the case where a point light source is at the projection center. This condition well approximates the imaging system of an endoscope. In this case, the image gray level depends on not only the gradient of the object surface but also the distance from the light source to each point on the surface. To deal with this difficulty, we introduce the evolution equation for equal-range contours on the surface. Propagating this contour by solving the equation, we can reconstruct a shape. Experimental results for real medical endoscope images of a human stomach inner wall show feasibility of this method, and present a promising technique for morphological analysis of tumors on human inner organs.

元の言語English
ページ290-298
ページ数9
出版物ステータスPublished - 1996 1 1
外部発表Yes
イベントProceedings of the 1996 Workshop on Mathematical Methods in Biomedical Image Analysis - San Francisco, CA, USA
継続期間: 1996 6 211996 6 22

Other

OtherProceedings of the 1996 Workshop on Mathematical Methods in Biomedical Image Analysis
San Francisco, CA, USA
期間96/6/2196/6/22

ASJC Scopus subject areas

  • Engineering(all)

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  • これを引用

    Deguchi, K., & Okatani, T. (1996). Shape reconstruction from an endoscope image by shape-from-shading technique for a point light source at the projection center. 290-298. 論文発表場所 Proceedings of the 1996 Workshop on Mathematical Methods in Biomedical Image Analysis, San Francisco, CA, USA, .