| Title: | A separate least squares algorithm for efficient arithmetic coding in lossless image compression |
| Authors: | Triantafyllidis, G. A. Strintzis, M. G. |
| Citation: | Journal of WSCG. 2001, vol. 9, no. 1-3. |
| Issue Date: | 2001 |
| Publisher: | Václav Skala - UNION Agency |
| Document type: | článek article |
| URI: | http://hdl.handle.net/11025/15773 http://wscg.zcu.cz/wscg2001/WSCG2001_Program.htm |
| ISSN: | 1213-6972 (print) 1213-6980 (CD-ROM) 1213-6964 (online) |
| Keywords: | nejmenší čtverce;aritmetické kódování;výběr kontextu;bezztrátové zpracování obrazu |
| Keywords in different language: | least squares;arithmetic coding;context selection;lossless image processing |
| Abstract in different language: | The overall performance of discrete wavelet transforms for losssless image compression may be further improved by properly designing efficient entropy coders. In this paper a novel technique is proposed for the implementation of context-based adaptive arithmetic entropy coding. It is based on the prediction of the value of the current transform coefficient. The proposed algorithm employs a weighted least squares method applied separately for the HH, HL and LH bands of each level of the multiresolution structure, in order to achieve appropriate context selection for arithmetic coding. Experimental results illustrate and evaluate the performance of the proposed technique for lossless image compression. |
| Rights: | © Václav Skala - UNION Agency |
| Appears in Collections: | Volume 9, number 1-3 (2001) |
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