On Improving JPEG Entropy Coding by means of Sub-Stream Extraction

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概要

• 論文の詳細を見る

• We introduce an entropy coding method to enhance the compression efficiency of JPEG. Because run-length coding and early-termination work more effectively for longer zero sequences, we extract ones and negative ones from the coefficients and reduce the magnitude of all coefficients by one. The extracted coefficients are encoded with a designated entropy coding method. The proposed method can transmit images in two parts progressively, where the first contains JPEG-compatible image with a small amount of degradation and the second is used to add fine details. Our method improves the compression ratio by more than 5% without sacrificing the efficiency of JPEG.

• The Institute of Electronics, Information and Communication Engineersの論文
• 2012-11-01

著者

• WEE Youngcheul

  the Department of Information and Computer Engineering, Ajou University

• KIM Youngjin

  the Department of Information and Computer Engineering, Ajou University

• CHOI Jung-Ju

  the Department of Digital Media, Ajou University

• SHIN Hyun

  the Department of Digital Media, Ajou University

関連論文

• On Improving JPEG Entropy Coding by means of Sub-Stream Extraction

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