Shape from Endoscope Image based on Photometric and Geometric Constraints
Keita Tatematsu, Yuji Iwahori, Tsuyoshi Nakamura, Shinji Fukui, Robert J. Woodham, Kunio Kasugai · Procedia Computer Science · 2013
An endoscope is a medical instrument that acquires images inside the human body. This paper proposes a new approach to recover 3-D shape under conditions of both point light source illumination and perspective projection. Previous approaches recovered shape based on a Fast Marching Method under conditions of parallel light source and orthographic projection. The new approach uses optimization based on constraints provided by geometry and by a suitable image irradiance equation. Experiments with endoscope images are demonstrated to confirm that the recovered shape is improved.