Microscopic Photometric Stereo: A Dense Microstructure 3D Measurement Method
We propose a novel Microscopic Photometric Stereo (MPS) method based on optical microscope and uncalibrated photometric stereo (UPS) for dense and refined microstructure 3D measurement. The UPS method, which does not require a priori knowledge of the light-source direction or the light-source intensity, is employed to recover surface normals and albedos from the captured micro-images. For resolving the inherent generalized bas-relief (GBR) ambiguity of the UPS, we present a GBR disambiguation method based on a framework of entropy minimization, and extend it using a graph cuts energy minimization to decrease the influence of noise and further refine the recovered surface normal. The proposed MPS method has been tested on synthetic as well as real images and very encouraging results have been obtained.
Zhongwei Li Y.F. Li
Department of M.E.E.M.,City University of Hong Kong,Tat Chee Avenue,Kowloon,Hong Kong SAR
国际会议
2011 IEEE International Conference on Robotics and Automation(2011年IEEE世界机器人与自动化大会 ICRA 2011)
上海
英文
6009-6014
2011-05-09（万方平台首次上网日期，不代表论文的发表时间）