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.
|Number of pages
|Published - 1996
|Proceedings of the 1996 Workshop on Mathematical Methods in Biomedical Image Analysis - San Francisco, CA, USA
Duration: 1996 Jun 21 → 1996 Jun 22
|Proceedings of the 1996 Workshop on Mathematical Methods in Biomedical Image Analysis
|San Francisco, CA, USA
|96/6/21 → 96/6/22