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Optimal separable interpolation of color images with bayer array format

Scharr, Hanno

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Abstract

In this paper new separable interpolation schemes for the channels of a single chip color camera are presented. The pixel grid of the camera is called "Bayer" pattern (compare [6] and fig. 1). As different colors are on different grids interpolation of all channels onto one common grid has to be performed. An analysis of the sampling scheme of this camera chip restricts the interpolation methods to filters on inter pixel positions in the middle of the processed color channel grids. Additionally this analysis defines the optimal resolution of the interpolated data which is of high interest concerning data compression. For this kind of interpolation optimal filters are presented that eliminate any possibility of phase errors. Thereby pixel values are supposed to be point samples of an intensity signal convolved by the average pixel area of the chip.

Item Type: Other
Date Deposited: 16. Nov 2011 13:23
Date: 2000
Faculties / Institutes: Service facilities > Interdisciplinary Center for Scientific Computing
Subjects: 004 Data processing Computer science
Controlled Keywords: Farbbildverarbeitung, Interpolation, Bildverarbeitung
Uncontrolled Keywords: Optimal interpolation , data reduction , Bayer array format , phase error , sampling
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