For very low bit-rate video compression, wavelet based approaches suffer the ghost effect caused by larger temporal distortions. We propose an innovative temporal-domain wavelet filtering scheme called sub-grouping transformation (SGT), which divides wavelet coefficients in the temporal direction into sub-groups and applies the temporal wavelet transform to individual sub-groups. By splitting high motion coefficient arrays into smoother sub-groups, the proposed algorithm can achieve high compression ratio and reduce the ghost effect at the same time.
An innovative temporal wavelet filtering scheme for video coding
IEEE International Conference on Image Processing 2005 ; 3 ; III-205
2005-01-01
210236 byte
Conference paper
Electronic Resource
English
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