| Paper: | IMDSP-L6.4 | ||
| Session: | Interframe Subband/Wavelet Video Coding | ||
| Time: | Friday, May 21, 10:30 - 10:50 | ||
| Presentation: | Lecture | ||
| Topic: | Image and Multidimensional Signal Processing: Image and Video Coding | ||
| Title: | MP3D: HIGHLY SCALABLE VIDEO CODING SCHEME BASED ON MATCHING PURSUIT | ||
| Authors: | Adel Rahmoune; Swiss Federal Institute of Technology (EPFL) | ||
| Pierre Vandergheynst; Swiss Federal Institute of Technology (EPFL) | |||
| Pascal Frossard; Swiss Federal Institute of Technology (EPFL) | |||
| Abstract: | This paper describes a novel video coding scheme based on athree-dimensional Matching Pursuit algorithm. In addition to good compression performance at low bit rate, the proposed coder allows for flexible spatial, temporal and rate scalability thanks to its progressive coding structure. The Matching Pursuit algorithm generates a sparse decomposition of a video sequence in a series of spatio-temporal atoms, taken from a overcomplete dictionary of three-dimensional basis functions. The dictionary is generated by shifting, scaling and rotating two different mother atoms in order to cover the whole frequency cube. An embedded stream is then produced from the series of atoms. They are first distributed into sets through the set-partitioned position map algorithm (SPPM) to form the index-map, inspired from bit plane encoding. Scalar quantization is then applied to the coefficients which are finally arithmetic coded. A complete MP3D codec has been implemented, and performance are shown to favorably compare toother scalable coders like MPEG-4 FGS and SPIHT-3D. In addition,the MP3D streams offer an incomparable flexibility for multiresolution streaming or adaptive decoding. | ||
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