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Proceedings Paper

Joint demosaicking and integer-ratio downsampling algorithm for color filter array image
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Paper Abstract

This paper presents a joint demosacking and integer-ratio downsampling algorithm for color filter array (CFA) images. Color demosaicking is a necessary part of image signal processing to obtain full color image for digital image recording system using single sensor. Also, such as mobile devices, the obtained image from sensor has to be downsampled to be display because the resolution of display is smaller than that of image. The conventional method is “Demosaicking first and downsampling later”. However, this procedure requires a significant hardware resources and computational cost. In this paper, we proposed a method in which demosaicking and downsampling are working simultaneously. We analyze the Bayer CFA image in frequency domain, and then joint demosaicking and downsampling with integer-ratio scheme based on signal decomposition of luma and chrominance components. Experimental results show that the proposed method produces the high quality performance with much lower com putational cost and less hardware resources.

Paper Details

Date Published: 16 March 2015
PDF: 8 pages
Proc. SPIE 9399, Image Processing: Algorithms and Systems XIII, 93990A (16 March 2015); doi: 10.1117/12.2083177
Show Author Affiliations
Sangyoon Lee, Yonsei Univ. (Korea, Republic of)
Moon Gi Kang, Yonsei Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9399:
Image Processing: Algorithms and Systems XIII
Karen O. Egiazarian; Sos S. Agaian; Atanas P. Gotchev, Editor(s)

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