Title :
Active lens control for high precision computer imaging
Author :
Willson, Reg G. ; Shafer, Steven A.
Author_Institution :
Robotics Inst., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
Lenses used in computer vision systems have many nonideal behaviors that can have a significant effect on vision tasks if not taken into account or compensated for. The authors show how two nonideal lens behaviors, chromatic aberration and focus magnification, can cause significant problems in color image analysis and focus ranging respectively. They show how precise active lens control can be used to reduce these effects significantly
Keywords :
aberrations; computer vision; focusing; lenses; optical variables control; active lens control; chromatic aberration; color image analysis; computer vision; focus magnification; focus ranging; Band pass filters; Cameras; Focusing; Image analysis; Image color analysis; Image sensors; Lenses; Machine vision; Optical imaging; Optical sensors;
Conference_Titel :
Robotics and Automation, 1991. Proceedings., 1991 IEEE International Conference on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-8186-2163-X
DOI :
10.1109/ROBOT.1991.131931
