23 October 1996 Wavelet transcoding of block DCT-based images through block transform domain processing
Author Affiliations +
In this paper, we propose a method of efficient computation of wavelet coefficients from DCT-based coded image/video signals. Block transform domain filtering is well suited for transcoding of such data. First direct transform domain processing removes the necessary of inverse transform. Second, the number of nonzero elements in the blocks are significantly smaller than spatial domain. Therefore, the amount of computation can be reduced accordingly. Finally, the block processing algorithm provides a parallel processing method. Hence a fast implementation of the algorithm is well suited.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Uipil Chong, Uipil Chong, Seung P. Kim, Seung P. Kim, } "Wavelet transcoding of block DCT-based images through block transform domain processing", Proc. SPIE 2825, Wavelet Applications in Signal and Image Processing IV, (23 October 1996); doi: 10.1117/12.255294; https://doi.org/10.1117/12.255294


Some contributions to wavelet-based image coding
Proceedings of SPIE (June 27 2000)
Transform-based lossless coding
Proceedings of SPIE (December 27 1998)
Wavelet and subband coding of images: a comparative study
Proceedings of SPIE (October 31 1993)
Image compression using the W-transform
Proceedings of SPIE (August 31 1995)
Fast reversible wavelet image compressor
Proceedings of SPIE (October 22 1996)

Back to Top