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Journal of Electronic Imaging

Fast high-quality color-filter-array interpolation method for digital camera systems
Author(s): Shih-Chang Hsia
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Paper Abstract

We present a novel method for color interpolation that is specially designed for color-filter-array images acquired with charge-coupled device (CCD) detectors. The interpolation technique combines edge direction weighting and the local gain approach to determine missing sensor information with high accuracy but low computational costs. Simulations demonstrate that the proposed algorithm can achieve high spatial resolution and color fidelity for camera imaging systems. The averaged peak signal-to-noise ratio (PSNR) is improved about 2.3, 1.1, and 0.4 dB compared to bilinear interpolation, cubic B-spline, and discriminated color correlation, respectively. Moreover, the new color interpolation uses low computational complexity in terms of the number of additions and multiplications to be performed, and it requires less memory than the cubic B-spline and discriminated color correlation methods.

Paper Details

Date Published: 1 January 2004
PDF: 7 pages
J. Electron. Imag. 13(1) doi: 10.1117/1.1631443
Published in: Journal of Electronic Imaging Volume 13, Issue 1
Show Author Affiliations
Shih-Chang Hsia, National Kaohsiung First Univ. of Science and Tech (Taiwan)

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