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      • Department of Electrical and Electronics Engineering
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      Compression of images in CFA format

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      Author
      Cüce, Halil İbrahim
      Çetin, A. Enis
      Davey, M. K.
      Date
      2006
      Source Title
      Proceedings of the International Conference on Image Processing, IEEE 2006
      Print ISSN
      1522-4880
      Publisher
      IEEE
      Pages
      1141 - 1144
      Language
      English
      Type
      Conference Paper
      Item 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 transforms
      Huffman 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
      Permalink
      http://hdl.handle.net/11693/27181
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/ICIP.2006.312758
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      • Department of Electrical and Electronics Engineering 3597
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