IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa
A New Progressive Image Quality Control Method for ROI Coding in JPEG2000 Standard
Yoshihiro KITAURAMitsuji MUNEYASUKatsuaki NAKANISHI
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2008 Volume E91.A Issue 4 Pages 998-1005

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Abstract

JPEG2000 still image coding standard has a feature called Region of Interest (ROI) coding. This feature can encode a restricted region in an image prior to than its background (BG) region. In low bit rate compression, the code of the ROI region occupies the most of the bit stream in the whole image and it causes the serious deterioration of the image quality in the BG region. This paper proposes a new image quality control method between the ROI region and the BG one by the one time encoding process and it can achieve more detailed image quality control. The use of ROI masks in the encoder makes it possible. The standard decoder of JPEG2000 partl can decode the encoded data in the proposed method.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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