Title :
Photometric stereo under blurred observations
Author :
Joshi, M.V. ; Chaudhuri, Subhasis
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Mumbai, India
Abstract :
In this paper, we address the problem of simultaneous estimation of structure and restoration of images from blurred photometric measurements. Given the blurred observations of a static scene captured with a stationary camera, under different illuminant directions, we obtain the structure represented by the surface gradients and the albedo and also perform blind image restoration. The surface gradients and the albedo are modeled as separate Markov random fields (MRF) and a suitable regularization scheme is used to estimate the different fields as well as the blur parameter.
Keywords :
Markov processes; albedo; image restoration; image sensors; stereo image processing; Markov random field model; albedo modeling; blind image restoration estimation; blurred observations; blurred photometric measurements; illuminant directions; image structure estimation; photometric stereo; stationary camera; surface gradient modeling; Cameras; Degradation; Image restoration; Layout; Light sources; Photometry; Reflectivity; Shape; Stereo vision; Surface treatment;
Conference_Titel :
Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International Conference on
Print_ISBN :
0-7695-2128-2
DOI :
10.1109/ICPR.2004.1334495