Compression of images in CFA format
Author
Cüce, Halil İbrahim
Çetin, A. Enis
Davey, M. K.
Date
2006Source Title
Proceedings of the International Conference on Image Processing, IEEE 2006
Print ISSN
1522-4880
Publisher
IEEE
Pages
1141 - 1144
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
In this paper, images in Color Filter Array (CFA) format are compressed without converting them to full-RGB color images. Green pixels are extracted from the CFA image data and placed in a rectangular array, and compressed using a transform based method without estimating the corresponding luminance values. In addition, two sets of color difference (or chrominance) coefficients are obtained corresponding to the red and blue pixels of the CFA data and they are also compressed using a transform based method. The proposed method produces better PSNR values compared to the standard approach of bilinear interpolation followed by compression.
Keywords
Discrete cosine transformsHuffman codes
Image coding
Quantization
A-transform
Bilinear interpolation
Color difference
Color filter arrays
Color images
Compression of images
Image data
Luminance value
Rectangular arrays
Color
Cosine transforms
Imaging systems
Metadata
Pixels