Patent ID: 6404814
Filing Date: 2002-06-11
Classification: H04N

Abstract:
A method for transcoding a predictively-coded object-based picture signal representing a group of pictures to a predictively-coded block-based picture signal representing the group of pictures, the method comprising:extracting a coded scene descriptor and coded object descriptors from the predictively-coded object-based picture signal and decoding the coded scene descriptor to generate a scene descriptor; partially decoding coded object descriptors to generate respective partially-decoded object descriptors, the decoding including extracting coding information that describes coding of the coded object descriptors; in response to the scene descriptor, generating from the partially-decoded object descriptors a frame of a partially-encoded block-based picture signal representing one of the pictures as a current picture; and generating a frame of the predictively-coded block-based picture signal representing the current picture by predictively coding, in response to at least part of the coding information, the partially-coded block-based picture signal to a uniform coding state.