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Sparsity-based optimization of two lifting-based wavelet transforms for semi-regular mesh compression

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Academic year: 2021

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Figure

Figure 1: Overview of a wavelet decomposition.
Figure 3: Wavelet analysis of a semi-regular mesh. M j is transformed into a mesh M j−1 of lower resolution and a set C j of coefficients  (rel-ative to the red dots).
Figure 6: Prediction stencils of the Butterfly-based lifting scheme.
Figure 8: Method for computing γ. The orange dot (a) represents the only non null coefficient; the green dots (b) represent the two sole vertices of V j−1 with non null values after synthesis; the red dots  rep-resent the 43 vertices of V j with non null v
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