NDLI: An improved JPEG image coder using the adaptive fast approximate Karhunen-Loeve transform (AKLT)

Content Provider	IEEE Xplore Digital Library
Author	Leu-Shing Lan Reed, I.S.
Copyright Year	1994
Description	Author affiliation: Dept. of Electron. Eng., Ming-Shin Coll. of Technol., China (Leu-Shing Lan)
Abstract	A new fast approximate Karhunen-Loeve transform (AKLT) [Lan and Reed, 1993; Reed and Lan, 1993] was discovered. This novel transform is derived by use of the perturbation theory of linear operators. The theoretical advantages of the AKLT over the DCT, the current industrial standard for image compression, are discussed thoroughly in Reed and Lan, and Lan and Reed for the first-order Markov image model. In the present paper, an improved JPEG image coder which uses the adaptive AKLT is presented. An improvement of 5% in compression ratio as compared with the DCT-JPEG system is obtained when the desired nominal data rate is above 0.4 bits/pixel for typical real-life images. The rate-distortion curves indicate a superiority of the adaptive AKLT scheme over the DCT scheme for all ranges of the data rate. It is worthwhile to note that this new adaptive AKLT-JPEG system can be really implemented using the existing JPEG chip set with only a slight modification.<>
Starting Page	160
Ending Page	163
File Size	322674
Page Count	4
File Format	PDF
ISBN	078031865X
DOI	10.1109/SIPNN.1994.344942
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Adaptive systems Transform coding Rate-distortion Ear Educational institutions Karhunen-Loeve transforms Discrete cosine transforms Pixel HDTV
Content Type	Text
Resource Type	Article

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