Presentation	1999/2/2 Improving the Computational Redundancy of Spatially Segmented Wavelet Transform Masaharu MURAKAMI, Hitoshi KIYA, Shogo MURAMATSU, Seiji KIMURA, Takahiro FUKUHARA,
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Abstract(in English)	In this report, we discuss tiling wavelet tranforms in which an input image is partitioned into tiles and then the wavelet transform is executed on each tile. One of the conventional tiling methods, Spatia11y Segmented Wavelet Transform (SSWT), needs overlapping tiles to avoid block distortion along the boundaries of the tiles. Moreover, the overlap size of tiles must be decided by the number of stage S and the length of filters L, before executing the transformation. It approximately increases in proportion to 2^ and L. These limitations generate a lot of redundant calculations and disturb the adaptive transformations. In this report, we propose a new tiling method which gives the same wavelet coefficients as those of the SSWT, by using different approach. Thus, the proposed method does not generate the block distortion, Since the overlap size of tiles in the proposed method is independent of the number of stage S, it is possible to improve both problems of computational redundancy and adaptive transformation.
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Keyword(in English)	Wavelet transform / Image compression / SSWT / JPEG2000
Paper #	EID98-150
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Conference Information
Committee	EID
Conference Date	1999/2/2(1days)
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Registration To	Electronic Information Displays (EID)
Language	ENG
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Improving the Computational Redundancy of Spatially Segmented Wavelet Transform
Sub Title (in English)
Keyword(1)	Wavelet transform
Keyword(2)	Image compression
Keyword(3)	SSWT
Keyword(4)	JPEG2000
1st Author's Name	Masaharu MURAKAMI
1st Author's Affiliation	Department of Electrical Engineering, Graduate School of Tokyo Metropolitan University()
2nd Author's Name	Hitoshi KIYA
2nd Author's Affiliation	Department of Electrical Engineering, Graduate School of Tokyo Metropolitan University
3rd Author's Name	Shogo MURAMATSU
3rd Author's Affiliation	Department of Electrical Engineering, Graduate School of Tokyo Metropolitan University
4th Author's Name	Seiji KIMURA
4th Author's Affiliation	Sony Corporation, Media Processing Laboratories
5th Author's Name	Takahiro FUKUHARA
5th Author's Affiliation	Sony Corporation, Media Processing Laboratories
Date	1999/2/2
Paper #	EID98-150
Volume (vol)	vol.98
Number (no)	573
Page	pp.pp.-
#Pages	6
Date of Issue