Patent ID: 6738423
Filing Date: 2004-05-18
Classification: H04N

Abstract:
A method for encoding video information, comprising:estimating the motion of a picture element between a piece of reference video information and a piece of current video information; representing the motion of said picture element using a set of basis functions and associated motion coefficients thereby forming a model representative of the motion of said picture element, forming prediction video information for the picture element from the piece of reference video information, using said model representative of the motion of said picture element, forming prediction error information representative of a difference between said prediction video information for the picture element and video information of the picture element, the prediction error information having a certain accuracy, wherein the method further comprises: defining a set of motion coefficient quantizers for quantizing the motion coefficients of said model representative of the motion of said picture element; selecting a motion coefficient quantizer from the set of motion coefficient quantizers, and quantizing the motion coefficients using the selected motion coefficient quantizer, thereby representing the motion of said picture element with a certain accuracy, said selected motion coefficient quantizer being selected using a predetermined selection criterion so that the accuracy with which the motion of said picture element is represented is compatible with the accuracy of said prediction error information.