Patent ID: 6272178
Filing Date: 2001-08-07
Classification: H04N

Abstract:
Encoder for performing motion compensated encoding of video data, comprising:means (8) for estimating motion vectors describing scene motion displacements of video frame pixels;means (7) for predicting a video data frame (P) based on a first video data frame (R) and said motion vectors;means (1) for calculating a prediction error frame (E) based on said predicted video data frame (P) and on a second video data frame (I);means (2) for encoding said prediction error frame (E) and obtaining prediction error data;means (4) for transmitting said motion vectors and said prediction error data to a decoder;said means (2) for encoding said prediction error frame (E) comprising:means (24) for partitioning said prediction error frame into a plurality of areas; anddetermination means for performing at least one of the following operations: determination of areas in said prediction error frame (E) to be encoded and determination of at least one coding scheme for each area to be encoded of said prediction error frame (E); andarea encoding means (26) for encoding the areas to be encoded of said prediction error frame (E) in accordance with the at least one determination operation of said determination means;wherein said determination means is adapted to analyse properties of said predicted video data frame (P) and to perform said at least one determination operation based on said analysis.