Title :
Implementation of a passive automatic focusing algorithm for digital still camera
Author :
Lee, Je-Ho ; Kim, Kun-Sop ; Nam, Byung-Deok ; Lee, Jae-Chon ; Kwon, Yong-Moo ; Kim, Hyoung-Gon
Author_Institution :
Div. of Electron. & Inf. Technol., Korea Inst. of Sci. & Technol., Seoul, South Korea
fDate :
8/1/1995 12:00:00 AM
Abstract :
A passive AF algorithm for the digital still camera is proposed. As a class of hybrid processing techniques, the proposed algorithm utilizes the two different focus measures by which the best focused image is extracted via two stages. With the paraxial geometric optics model of image formation, some well-known focus measures are investigated and a robust focusing algorithm is designed based on them. The proposed algorithm has been successfully tested on a prototype digital still camera
Keywords :
cameras; focusing; geometrical optics; image processing; image processing equipment; digital still camera; focus measures; focused image; hybrid processing techniques; image formation; paraxial geometric optics model; passive automatic focusing algorithm; Digital cameras; Focusing; Image processing; Industrial electronics; Information technology; Instruments; Low pass filters; Multimedia systems; Optical filters; Solid modeling;
Journal_Title :
Consumer Electronics, IEEE Transactions on
