Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (3): 123-128.doi: 10.1016/S1005-8885(09)60461-1

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Four-dimensional matrix Walsh transform for lossless compression of color video

李钰1,陈贺新2,桑爱军2,冯华1   

  1. 1. 吉林大学通信工程学院
    2. 吉林大学
  • 收稿日期:2009-07-06 修回日期:2010-01-29 出版日期:2010-06-30 发布日期:2010-06-29
  • 通讯作者: 桑爱军 E-mail:sangaj@jlu.edu.cn
  • 基金资助:

    国家级.国家自然科学基金

Four-dimensional matrix Walsh transform for lossless compression of color video

  • Received:2009-07-06 Revised:2010-01-29 Online:2010-06-30 Published:2010-06-29

摘要:

This article presents a coding method for the lossless compression of color video. In the proposed method, four-dimensional matrix Walsh transform (4D-M-Walsh-T) is used for color video coding. The whole n frames of a color video sequence are divided into ‘3D-blocks’ which are image width (row component), image height (column component), image width (vertical component) in a color video sequence, and adjacency (depth component) of n frames (Y, U or V) of the video sequence. Similar to the method of 2D-Walsh transform, 4D-M-Walsh-T is 4D sub-matrices, and the size of each sub-matrix is n. The method can fully utilize correlations to encode for lossless compression and reduce the redundancy of color video, such as adjacent pixels in one frame or different frames of a video at the same time. Experimental results show that the proposed method can achieve higher lossless compression ratio (CR) for the color video sequence.

关键词:

4D-M-Walsh-T, lossless compression, compression ratio

Abstract:

This article presents a coding method for the lossless compression of color video. In the proposed method, four-dimensional matrix Walsh transform (4D-M-Walsh-T) is used for color video coding. The whole n frames of a color video sequence are divided into ‘3D-blocks’ which are image width (row component), image height (column component), image width (vertical component) in a color video sequence, and adjacency (depth component) of n frames (Y, U or V) of the video sequence. Similar to the method of 2D-Walsh transform, 4D-M-Walsh-T is 4D sub-matrices, and the size of each sub-matrix is n. The method can fully utilize correlations to encode for lossless compression and reduce the redundancy of color video, such as adjacent pixels in one frame or different frames of a video at the same time. Experimental results show that the proposed method can achieve higher lossless compression ratio (CR) for the color video sequence.

Key words:

4D-M-Walsh-T, lossless compression, compression ratio