SCALABLE COMPRESSION OF TIME-CONSISTEND 3D MESH SEQUENCES
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Abstract
We present a method for predictive compression of time-consistent 3D mesh sequences supporting and exploiting scalability. The applied method decomposes each frame of a mesh sequence in layers, which provides a time-consistent multi-resolution representation. Following the predictive coding paradigm, local temporal and spatial dependencies between layers and frames are exploited for layer-wise compression. Prediction is performed vertex-wise from coarse to fine layers exploiting the motion of already encoded neighboring vertices for prediction of the current vertex location. Consequently, successive layer-wise decoding allows to reconstruct frames with increasing levels of detail.
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Citations
78 Claims
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1-63. -63. (canceled)
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64. Method for encoding a time-consistent 3D mesh sequence using scalable predictive coding, the method comprising the steps of:
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receiving successive frames of a 3D mesh sequence, wherein a frame comprises a set of vertices (V) with associated connectivity (K) and wherein the connectivity (K) is identical for all frames of the 3D mesh sequence, decomposing the 3D mesh sequence into a multi-resolution representation comprising two or more spatial layers represented by disjoint sets of vertices (Vl) with associated connectivities (Kl) and encoding the vertices of the layers using a predictive encoder, wherein the decomposition is calculated from the connectivity (K) of the 3D mesh sequence irrespectively of location data of the vertices. - View Dependent Claims (65, 66, 67, 68, 69, 70, 74, 76, 78)
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71. Method for decoding a data signal representing an encoded time-consistent 3D mesh sequence defined by frames, each frame comprises a set of vertices (V) with associated connectivity (K) and wherein the connectivity (K) is identical for all frames of the 3D mesh sequence, encoded by using scalable predictive coding, the method comprising the steps of:
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receiving the data signal, decoding the connectivity (K) of the 3D mesh sequence, decomposing the 3D mesh sequence into a multi-resolution representation comprising two or more spatial layers represented by disjoint sets of vertices (Vl) with associated connectivities (Kl) and decoding the vertices of the layers using a predictive decoder, wherein the decomposition is calculated from the connectivity (K) of the 3D mesh sequence irrespectively of location data of the vertices. - View Dependent Claims (72, 73, 75, 77)
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Specification