Adaptive JPEG lossy compression of color images

被引：0
|
作者：
Ponomarenko N.N. [1 ]
Lukin V.V. [1 ]
Egiazarian K.O. [2 ]
Lepistö L. [3 ]
机构：
[1] Dept 504, National Aerospace University, Kharkiv, 61070
[2] Tampere International Center for Signal Processing, Tampere University of Technology, FIN-33101, Tampere
[3] Nokia Corporation, FI-33720 Tampere
来源：
Telecommunications and Radio Engineering (English translation of Elektrosvyaz and Radiotekhnika) | 2011年 / 70卷 / 15期
关键词：
Adaptive compression; Color images;
D O I：
10.1615/TelecomRadEng.v70.i15.40
中图分类号：
学科分类号：
摘要：
JPEG based compression of color digital images in visually lossless manner with adaptation toimage/distortion characteristics and providing appropriately large compression ratio is considered. Adaptation is performed for raw images with taking into account further nonlinear transformations carried out in imaging devices as digital cameras before compression. Blur andnoise parameters are estimated and/or predicted and they serve for setting a properquantization table for JPEG compression. The proposed approach is tested for a large number of real life color photos. It is demonstrated that compression ratio can be on the average increasedby about two times compared to super-high quality (SHQ) mode used in modern digital cameras. No visible differences are observed between images compressed by adaptive JPEG and in SHQ mode. © 2011 by Begell House, Inc.
引用
收藏
页码：1343 / 1352
页数：9
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