Patent ID: 8111755

Claim:
A method for low-complexity Slepian-Wolf rate estimation in a hybrid Wyner-Ziv video encoder, which determines the minimum Slepian-Wolf rate required to allow correct decoding, comprising the steps of: generating an intensity field interpolated from temporally neighboring frames; subsampling of a current frame and interpolated intensity field to reduce the number of samples and complexity in subsequent steps; transform domain conversing the current frame and the interpolated intensity field; channel model estimation based on the subsampled transform domain coefficients of the current frame and the interpolated intensity field, which consists of determining one of a parameterized class of models which best fits the observed transform coefficients and prior channel model estimates; Slepian-Wolf bound estimation which determines the Slepian-Wolf bound based on the channel model estimate; and code rate estimation which determines the correct Slepian-Wolf coding rate to use in encoding as a function of the sequence length to be Slepian-Wolf coded and the code structure of the available Slepian-Wolf codes, in addition to the channel model estimate and the Slepian-Wolf bound.