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http://hdl.handle.net/10397/1473
Title: | A lossless compression scheme for Bayer color filter array images | Authors: | Chung, KH Chan, YH |
Issue Date: | Feb-2008 | Source: | IEEE transactions on image processing, Feb. 2008, v. 17, no. 2, p. 134-144 | Abstract: | In most digital cameras, Bayer color filter array (CFA) images are captured and demosaicing is generally carried out before compression. Recently, it was found that compression-first schemes outperform the conventional demosaicing-first schemes in terms of output image quality. An efficient prediction-based lossless compression scheme for Bayer CFA images is proposed in this paper. It exploits a context matching technique to rank the neighboring pixels when predicting a pixel, an adaptive color difference estimation scheme to remove the color spectral redundancy when handling red and blue samples, and an adaptive codeword generation technique to adjust the divisor of Rice code for encoding the prediction residues. Simulation results show that the proposed compression scheme can achieve a better compression performance than conventional lossless CFA image coding schemes. | Keywords: | Bayer pattern Color filter array (CFA) Digital camera Entropy coding Image compression |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on image processing | ISSN: | 1057-7149 | EISSN: | 1941-0042 | DOI: | 10.1109/TIP.2007.914153 | Rights: | © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
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Bayer color filter array images_07.pdf | 1.33 MB | Adobe PDF | View/Open |
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