2004 International Conference on Image Processing, 2004. ICIP '04.
DOI: 10.1109/icip.2004.1419743
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Spatial scalability and compression efficiency within a flexible motion compensated 3D-DWT

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Cited by 9 publications
(5 citation statements)
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“…Second, when the video is reconstructed at reduced spatial resolutions, excessive levels of aliasing from the spatial subband transform can cause undesirable visual artifacts. As shown by Mehrseresht and Taubman,15,16 the first problem can be avoided, and the second mitigated, by using full motion compensation, but then undesirable artifacts tend to appear at reduced resolutions wherever the motion model fails. The solution envisaged here is to adaptively switch between the full and safe motion compensation operators, based on the confidence we have in the local motion modeling accuracy.…”
Section: Adaptive Motion Compensationmentioning
confidence: 96%
“…Second, when the video is reconstructed at reduced spatial resolutions, excessive levels of aliasing from the spatial subband transform can cause undesirable visual artifacts. As shown by Mehrseresht and Taubman,15,16 the first problem can be avoided, and the second mitigated, by using full motion compensation, but then undesirable artifacts tend to appear at reduced resolutions wherever the motion model fails. The solution envisaged here is to adaptively switch between the full and safe motion compensation operators, based on the confidence we have in the local motion modeling accuracy.…”
Section: Adaptive Motion Compensationmentioning
confidence: 96%
“…As long as wavelet subband decomposition is used to generate coefficients and bit streams, the proposed synthesis gain matrix is likewise suitable. Only the values in (18) need to be re-evaluated according to the actual down-sampling filter.…”
Section: Derivation Of Synthesis Gain Matrixmentioning
confidence: 99%
“…Although they are widespread in video processing [11][12][13], wavelets are not fully exploited in animation compression. Actually, we observe that the works using wavelets in animation compression [10,14] propose an approach based on spatial wavelets (for static meshes).…”
Section: Problem Statement and Proposed Approachmentioning
confidence: 99%
“…The overall scheme of the compression methods in this domain [2][3][4][5][6][7][8][9][10] is the following: an analysis step first transforms the original geometry to reduce the signal information, and then a predictive coding scheme is applied on the resulting details to exploit the temporal coherence between successive frames. The natural approach for analyzing time-varying data is to exploit the temporal coherence, like in video processing [11][12][13]. Two of the most relevant approaches for animated sequences introduce for instance the principal component analysis to exploit the temporal coherence of the geometry component [4,5].…”
Section: Introductionmentioning
confidence: 99%
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