Patent ID: 6078616
Filing Date: 2000-06-20
Classification: H04N

Abstract:
A method of error concealment in decoding a coded video bit stream, comprising the steps of:estimating a motion vector in a temporal domain, the step of estimating the motion vector in the temporal domain including the steps of:detecting a first decoded motion vector for a forward reference frame at a macroblock positioned by a vector;detecting a second decoded motion vector for the difference between the forward reference frame at the macroblock positioned by the vector and the detected decoded motion vector for the forward reference frame at the macroblock positioned by the vector; anddetermining in a temporal domain an estimated motion vector for a current frame at the macroblock positioned by the vector based upon the detected second decoded motion vector;if the step of estimating the motion vector in the temporal domain is unsuccessful, estimating the motion vector in a spatial domain;updating a motion vector for use in estimating the macroblock based on the estimated motion vector determined in either the temporal or the spatial domain; andestimating the macroblock based on the estimated motion vector.