Title :
Chromatic aberration and depth extraction
Author :
Garcia, Josep ; Sánchez, Juan M. ; Orriols, Xavier ; Binefa, Xavier
Author_Institution :
Dept. d´´Inf., Univ. Autonoma de Barcelona, Spain
Abstract :
We introduce chromatic aberration as a source of visual information that can be useful for autofocus and depth estimation. A color video camera equipped with a lens with chromatic aberration has been used to take images of both step and occlusion edges at several distances from the camera. The defocus measures obtained in the three different RGB color channels of each image are different. We suggest the way this information can be exploited in order to design an autofocus sensor, and also how depth information can be derived
Keywords :
aberrations; computer vision; image colour analysis; lenses; optical focusing; optical information processing; optical transfer function; RGB color channels; autofocus; chromatic aberration; color video camera; defocus measures; depth estimation; depth extraction; occlusion edges; step edges; visual information; Cameras; Computer vision; Data mining; Focusing; Humans; Layout; Lenses; Optical surface waves; Retina; Visual system;
Conference_Titel :
Pattern Recognition, 2000. Proceedings. 15th International Conference on
Conference_Location :
Barcelona
Print_ISBN :
0-7695-0750-6
DOI :
10.1109/ICPR.2000.905499
