Bandpass Filter Based Focus Measure for Extended Depth of Field
피사계심도 확장을 위한 대역통과 필터 기반 초점 정량화 기법

Su-Ram Cha, Jeong-Tae Kim
2011 Journal of Broadcast Engineering  
In this paper, we propose a novel focus measure that determines in-focus and out-of-focus region in an image. In addition, we achieved extended depth of field by blending the acquired image and Wiener filtered image using a decision map based on the designed focus measure. Since conventional focus measures are based on the amount of high frequency components in an acquired image, the measures may not be accurate if there exist high frequency components in out-of-focused region. To overcome the
more » ... n. To overcome the problem, we designed the novel focus measure based on effective band pass filtering. In simulations and experiments, the proposed method showed better performance than existing methods.
doi:10.5909/jeb.2011.16.5.883 fatcat:lqb4626scrhzzclptkhh5olovy