By Topic

Noise insensitive focus value operator for digital imaging systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Jongseong Choi ; Institue of of TMS Information Technology, Yonsei University ; Hee Kang ; Chang-Min Lee ; Moon Gi Kang

Most auto-focusing algorhythms based on focus values which are calculated with high frequency image components are very sensitive to noise factor. The noise under low illumaination conditions generally degrades the auto-focusing performance. In this paper, we propose an operator to determine the noise insensitive focus value for digital imaging systems. The proposed algorhithm uses spatially adapted weights based on the local statistics of the image and the noise factors. Experiments conducted with and without noise factors demonstrate the high performance of the proposed method.

Published in:

IEEE Transactions on Consumer Electronics  (Volume:56 ,  Issue: 2 )