Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study on the Video Compression Technique based on 3D Wavelet Transform

3차원 웨이블릿 기반 영상 압축 기술에 대한 연구

  • Zi, Cui-Hui (Information & Telecommunications Research Institute, Dept. of Information & Communications Engineering, Sejong University) ;
  • Moon, Joo-Hee (Information & Telecommunications Research Institute, Dept. of Information & Communications Engineering, Sejong University)
  • ;
  • 문주희 (세종대학교 정보통신공학과 정보통신연구소)
  • Published : 2007.07.11
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Abstract

In previous work[1], each codeblock is coded using a context which is adaptively selected from three kinds of scanning directions after 3D DWT. But some subbands still have correlations among the coefficients in horizontal, vertical or temporal direction. In this paper, we propose a new 3D DWT-based video compression technique in which the difference of coefficients is calculated in one of three directions for every codeblocks and coded by a context adaptively selected for each codeblock. Experimental results show that the proposed compression technique outperforms measurably and visually compared to the conventional DWT-based techniques.

Keywords