Patent ID: 6157745
Filing Date: 2000-12-05
Classification: G06T,H04N

Abstract:
A method of coding a sequence of segmented images comprising a plurality of regions and associated labels and defining successive partitions, said method comprising the operations of estimating a motion model that characterizes for each of said regions the evolution of the segmentation from a previous partition to a current partition and encoding the contour and the texture of each region of said current partition, in which said encoding operation comprises in cascade the steps of:coding the contours of the regions to be at least one of transmitted and stored according to an intra-frame mode;generating a compensated partition involving both said regions to be sent in intra-frame mode and regions compensated on the basis of said motion model;computing from said current and compensated partitions an error partition and coding both said error partition and the label of each region of the coded error partition in an inter-frame mode; andselecting a coding technique for each region in accordance with at least one predetermined criterion, said coding technique being one of said intra-frame mode and said inter-frame mode, said at least one predetermined criterion including an estimate of computational costs associated with coding each region in said intra-frame mode and said inter-frame mode.