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Image compression through projection of wavelet coefficients

✍ Scribed by Chul-Woo Kim; Choong Woong Lee

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
414 KB
Volume
11
Category
Article
ISSN
0923-5965

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✦ Synopsis

This paper proposes an image compression algorithm that adopts projection scheme on wavelet transform domain of image signal. Wavelet-decomposed image is encoded by the result of projection along one direction out of eight which approximates the coefficients most closely to the originally transformed coefficients. These projection data are vector-quantized using separate codebooks depending on the decomposition level and orientation of decomposed image. Experimental result reveals that proposed scheme shows excellent performance in PSNR manner and also shows good subjective quality. ((3 1998 Elsevier Science B.V.

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