Open AccessAn occlusion insensitive adaptive focus measurement method
Author(s) -
Tarkan Aydın,
Yusuf Sinan Akgül
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.014212
Subject(s) - focus (optics) , depth of focus (tectonics) , computer science , classification of discontinuities , window (computing) , computer vision , artificial intelligence , ambiguity , optics , mathematics , physics , geology , paleontology , mathematical analysis , subduction , tectonics , programming language , operating system
This paper proposes a new focus measurement method for Depth From Focus to recover depth of scenes. The method employs an all-focused image of the scene to address the focus measure ambiguity problem of the existing focus measures in the presence of occlusions. Depth discontinuities are handled effectively by using adaptively shaped and weighted support windows. The size of the support window can be increased conveniently for more robust depth estimation without introducing any window size related Depth From Focus problems. The experiments on the real and synthetically refocused images show that the introduced focus measurement method works effectively and efficiently in real world applications.