Jornal article

Šorel M., Flusser J.

IEEE Transactions on Image Processing

2008

2 (2008)

105-116

1057-7149

RNDr. Michal Šorel, Ph.D. (ÚTIA - Oddělení zpracování obrazové informace)

camera shake, deblurring, depth from motion, multichannel bl

We examine the problem of restoration from multiple images degraded by camera motion blur.We consider scenes with significant depth variations resulting in space-variant blur. The proposed algorithm can be applied if the camera moves along an arbitrary curve parallel to the image plane, without any rotations. The knowledge of camera trajectory and camera parameters is not necessary. At the input, the user selects a region where depth variations are negligible. The algorithm belongs to the group of variational methods that estimate simultaneously a sharp image and a depth map, based on the minimization of a cost functional. To initialize the minimization, it uses an auxiliary window-based depth estimation algorithm. Feasibility of the algorithm is demonstrated by three experiments with real images.