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Please use this identifier to cite or link to this item: http://hdl.handle.net/2328/25740

Title: Color Filter Array Demosaicking Using High-Order Interpolation Techniques With a Weighted Median Filter for Sharp Color Edge Preservation
Authors: Li, Jimmy Siu
Randhawa, Sharmil
Keywords: Color filter array
Cubic spline
Demosaicking
Weighted median filter
Issue Date: 2009
Publisher: Institute of Electrical and Electronics Engineers Computer Society (IEEE Publishing)
Citation: Li, J. and Randhawa, S. 2009. Color Filter Array Demosaicking Using High-Order Interpolation Techniques With a Weighted Median Filter for Sharp Color Edge Preservation. IEEE Transactions on Image Processing 18 (9), 1946 - 1957.
Abstract: Demosaicking is an estimation process to determine missing color values when a single-sensor digital camera is used for color image capture. In this paper, we propose a number of new methods based on the application of Taylor series and cubic spline interpolation for color filter array demosaicking. To avoid the blurring of an edge, interpolants are first estimated in four opposite directions so that no interpolation is carried out across an edge. A weighted median filter, whose filter coefficients are determined by a classifier based on an edge orientation map, is then used to produce an output from the four interpolants to preserve edges. Using the proposed methods, the original color can be faithfully reproduced with minimal amount of color artifacts even at edges.
URI: http://hdl.handle.net/2328/25740
ISSN: 1057-7149
Appears in Collections:Computer Science, Engineering and Mathematics - Collected Works

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