DocumentCode :
3512088
Title :
Using filter banks to enhance images for fluid lens cameras based on color correlation
Author :
Tzeng, Jack ; Nguyen, Truong
Author_Institution :
Electr. & Comput. Eng., Univ. of California at San Diego, La Jolla, CA
fYear :
2009
fDate :
19-24 April 2009
Firstpage :
381
Lastpage :
384
Abstract :
The novel field of fluid lens cameras introduces unique image processing challenges. Intended for surgical applications, these fluid optics systems have improved miniaturization over glass lenses and do not have moving parts while zooming. However, the liquid medium creates non-uniform color blur, which causes certain color planes to appear sharper than others. We propose an adapted perfect reconstruction filter bank that uses high frequency sub-bands of sharp color planes to improve blurred color planes. The approach is refined by adjusting the decomposition level based on limited channel information. This paper primarily considers the use of a sharp green color plane to improve a blurred blue color plane. More generally, these methods could improve the red color plane as well as any system with high edge correlation between two images.
Keywords :
biomedical optical imaging; filtering theory; image colour analysis; image enhancement; image restoration; medical image processing; surgery; color blur; color correlation; color plane; fluid lens camera; fluid optics system; frequency subband; image enhancement; image processing; reconstruction filter bank; surgical application; Cameras; Color; Filter bank; Focusing; Frequency estimation; Glass; Image processing; Image reconstruction; Lenses; Low pass filters; Biomedical image processing; image color analysis; image enhancement; image reconstruction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
ISSN :
1520-6149
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2009.4959600
Filename :
4959600
Link To Document :
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