비율 제어 최적화를 이용한 JPEG2000 알고리즘 리뷰

The Review of JPEG2000 Algorithm using Optimal Rate Control

  • 정현진 (단국대학교 전기 전자공학부) ;
  • 김영섭 (단국대학교 전자공학과)
  • Chong, Hyun-Jin (Department of Electronics & Electrical Engineering Dankook University) ;
  • Kim, Young-Seop (Department of Electronics Engineering, Dankook University)
  • 발행 : 2009.03.31

초록

Abstract JPEG2000 achieve quality scalability through the rate control method used in the encoding process, which embeds quality layers to the code-stream. This architecture might raise two drawbacks. First, when the coding process finishes, the number and bit-rates of quality layers are fixed, causing a lack of quality scalability to code-stream encoded with a single or few quality layers. Second, in Post compression rate distortion (PCRD) the bit streams after the truncation points discarded. Therefore, computational power for the discarded bit streams is wasted. For solving of problem, through bit rate control, there are many researches. Each proposed algorithms have specially target feature that is improved performance like reducing computational power. Research results have strength and weakness. For the mean time, research contents are reviewed and compared, so we proposed research direction in the future.

키워드

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