DocumentCode
3310192
Title
Low-power auto focus algorithm using modified DCT for the mobile phones
Author
Lee, S.Y. ; Park, S.S. ; Kim, C.S. ; Kumar, Y. ; Kim, S.W.
Author_Institution
Dept. of Electron. Eng., Korea Univ., Seoul, South Korea
fYear
2006
fDate
7-11 Jan. 2006
Firstpage
67
Lastpage
68
Abstract
A new focus value calculation method based on the middle frequency component of DCT and applicable in auto focus function of a mobile phone is presented. Experimental results confirm the exactness in focus value calculation, power efficiency and immunity to impulsive noises of the proposed method.
Keywords
cameras; digital photography; discrete cosine transforms; impulse noise; mobile handsets; optical focusing; focus value calculation method; impulsive noises; low-power autofocus algorithm; middle frequency component; mobile phone cameras; modified discrete cosine transform; power efficiency; Digital cameras; Discrete cosine transforms; Discrete wavelet transforms; Filters; Focusing; Frequency; Hardware design languages; Laplace equations; Lenses; Mobile handsets;
fLanguage
English
Publisher
ieee
Conference_Titel
Consumer Electronics, 2006. ICCE '06. 2006 Digest of Technical Papers. International Conference on
Print_ISBN
0-7803-9459-3
Type
conf
DOI
10.1109/ICCE.2006.1598313
Filename
1598313
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