ENTROPY CONSTRAINED SCALAR QUANTIZER FOR A LAPLACE-MARKOV DATA SOURCE

摘要

A video coding system (10) and method for coding an input frame in which the evolution of discrete cosine transform (DCT) coefficients is modeled as a LaplaceMarkov process, the system comprising: a base layer processing system for generating a base layer reconstruction (16); an enhancement layer processing system for generating an enhancement layer reconstruction (18); and an entropy constrained scalar quantizer (ECSQ) system (12) for descritizing a prediction residual between the input frame and an estimation theoretic (ET) prediction output; wherein the ECSQ system utilizes an ECSQ that comprises a uniform threshold quantizer with a deadzone size defined by the equation (Formula I), where (Formula II).