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Multi-resolution tree search for iterated transformation theory-based coding
Description
Iterated transformation theory-based coding (ITTBC) suffers from very high computational complexity in the encoding phase. This is due to its exhaustive search. This paper proposes a multiresolution tree search ITTBC (MTS-ITTBC) to reduce the encoding complexity. MTS-ITTBC searches the ITT-code using a multiresolution search-tree. The computational load of MTS-ITTBC is O(NlogN), while that of full search ITTBC is O(N/sup 2/), where N is the number of range blocks or domain blocks in an image. Numerical examples show that the encoding time of MTS-ITTBC can be reduced to 14% of that of the full search ITTBC, while the loss in quality relative to the full search ITTBC is about 0.5 dB in p-pSNR, which is visually negligible. >
Journal
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- Proceedings of 1st International Conference on Image Processing
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Proceedings of 1st International Conference on Image Processing 3 137-141, 2002-12-17
IEEE Comput. Soc. Press
