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Hierarchical hybrid video coding: displaced frame difference coding

A new method for coding of displaced frame differences (DFD) is proposed. It is in its main aspects close to the classical pyramid approach of Burt and Adelson. In particular a least squares L2 Laplacian pyramid is employed which decomposes the DFD into several levels with differing spatial resolution. This pyramid is quantized and coded following a layered quantization approach together with a layered coding method based on conditional arithmetic coding. The DFD encoder outputs an embedded bit stream. Thus the coder control may truncate the bitstream at any point, and can keep a fixed rate. Simulation results show promising rate-distortion performance for low bit rate video coding.