DocumentCode
1218123
Title
DCT-Based Embedded Image Compression With a New Coefficient Sorting Method
Author
Song, Han Sae ; Cho, Nam Ik
Author_Institution
Dept. of Electr. Eng., Seoul Nat. Univ., Seoul
Volume
16
Issue
5
fYear
2009
fDate
5/1/2009 12:00:00 AM
Firstpage
410
Lastpage
413
Abstract
This letter presents a new sorting algorithm for the DCT-based embedded image compression. The magnitudes of DCT coefficients are estimated from the ones in the neighboring blocks, and the coefficients with larger estimates are given higher priority in encoding. This priority information is also used as contexts for arithmetic coding. The proposed method finds more significant coefficients earlier than the conventional methods, thereby providing higher coding gain.
Keywords
arithmetic codes; data compression; discrete cosine transforms; image coding; DCT coefficients; arithmetic coding; coefficient sorting method; embedded image compression; encoding; Approximation algorithms; Arithmetic; Bit rate; Discrete cosine transforms; Discrete wavelet transforms; Helium; Image coding; Partitioning algorithms; Quantization; Sorting; Coefficient sorting; discrete cosine transform; embedded coding; image coding; linear prediction;
fLanguage
English
Journal_Title
Signal Processing Letters, IEEE
Publisher
ieee
ISSN
1070-9908
Type
jour
DOI
10.1109/LSP.2009.2016010
Filename
4808181
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