Wavelet transcoding of block DCT-based images through block transform domain processing

Uipil Chong; Seung P. Kim

doi:10.1117/12.255294

23 October 1996 Wavelet transcoding of block DCT-based images through block transform domain processing

Uipil Chong, Seung P. Kim

Proceedings Volume 2825, Wavelet Applications in Signal and Image Processing IV; (1996) https://doi.org/10.1117/12.255294
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

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.

Citation Download Citation

Uipil Chong and 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); https://doi.org/10.1117/12.255294

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