中国物理B ›› 2013, Vol. 22 ›› Issue (6): 64203-064203.doi: 10.1088/1674-1056/22/6/064203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

An image compression method for space multispectral time delay and integration charge coupled device camera

金龙旭a b, 张然峰b   

  1. a Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2012-07-27 修回日期:2012-12-11 出版日期:2013-05-01 发布日期:2013-05-01
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 863-2-5-1-13B).

An image compression method for space multispectral time delay and integration charge coupled device camera

Jin Long-Xu (金龙旭)a b, Zhang Ran-Feng (张然峰)b   

  1. a Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-07-27 Revised:2012-12-11 Online:2013-05-01 Published:2013-05-01
  • Contact: Li Jin E-mail:jinlicareer@yahoo.com.cn
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 863-2-5-1-13B).

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摘要： Multispectral time delay and integration charge coupled device (TDICCD) image compression requires low-complexity encoder because it is usually completed on board where the energy and memory are limited. The Consultative Committee for Space Data Systems (CCSDS) has proposed an image data compression (CCSDS-IDC) algorithm which is so far most widely implemented in hardware. However, it cannot reduce spectral redundancy in multispectral images. In this paper, we propose a low-complexity improved CCSDS-IDC (ICCSDS-IDC)-based distributed source coding (DSC) scheme for multispectral TDICCD image consisting of a few bands. Our scheme is based on an ICCSDS-IDC approach that uses a bit plane extractor to parse the differences in original image and its wavelet transformed coefficient. The output of bit plane extractor will be encoded by a first order entropy coder. Low-density parity-check-based Slepian-Wolf (SW) coder is adopted to implement the DSC strategy. Experimental results on space multispectral TDICCD images show that the proposed scheme significantly outperforms the CCSDS-IDC-based coder in each band.

关键词: multispectral CCD images, Consultative Committee for Space Data Systems-image data compression (CCSDS-IDC), distributed source coding (DSC)

Abstract: Multispectral time delay and integration charge coupled device (TDICCD) image compression requires low-complexity encoder because it is usually completed on board where the energy and memory are limited. The Consultative Committee for Space Data Systems (CCSDS) has proposed an image data compression (CCSDS-IDC) algorithm which is so far most widely implemented in hardware. However, it cannot reduce spectral redundancy in multispectral images. In this paper, we propose a low-complexity improved CCSDS-IDC (ICCSDS-IDC)-based distributed source coding (DSC) scheme for multispectral TDICCD image consisting of a few bands. Our scheme is based on an ICCSDS-IDC approach that uses a bit plane extractor to parse the differences in original image and its wavelet transformed coefficient. The output of bit plane extractor will be encoded by a first order entropy coder. Low-density parity-check-based Slepian-Wolf (SW) coder is adopted to implement the DSC strategy. Experimental results on space multispectral TDICCD images show that the proposed scheme significantly outperforms the CCSDS-IDC-based coder in each band.

Key words: multispectral CCD images, Consultative Committee for Space Data Systems-image data compression (CCSDS-IDC), distributed source coding (DSC)

中图分类号:  (Image forming and processing)

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