Title :
Region selectable auto-focusing system by digital PSF estimation
Author :
Chung Nam Cho ; Jung Hun Jung ; Joon Shik Yoon ; Jeong Ho Shin ; Joon Ki Paik
Author_Institution :
Dept. of Electron. Eng., Chung-Ang Univ., Seoul, South Korea
Abstract :
A region-selectable fully digital auto-focusing system is proposed. After a region of interest is selected, the amount of out-of-focus in the region is estimated, and then the focused image is made by using a digital image restoration technique. If the selected region does not have valid step-edge, the system does not perform restoration. The proposed system can provide a convenient human interface for a digital auto-focusing system.
Keywords :
image restoration; image segmentation; optical focusing; optical transfer function; video signal processing; digital PSF estimation; digital auto-focusing system; digital image restoration; focused image; human interface; out-of-focus estimation; point-spread-function; region of interest; region selectable auto-focusing system; video coding standards; video processing; Automatic control; Focusing; Humans; Image edge detection; Image restoration; Intelligent systems; Multiplexing; Security; Smart cameras; Videophone systems;
Conference_Titel :
Consumer Electronics, 1999. ICCE. International Conference on
Conference_Location :
Los Angeles, CA, USA
Print_ISBN :
0-7803-5123-1
DOI :
10.1109/ICCE.1999.785182
