A Scheme of Rate-adaptive Arbitrarily Shaped Segmentation for Motion Picture Coding.

Arbitrarily Shaped Transform of Segmented Motion Field for Very Low Bit-Rate Video Coding System

The arbitrarily shaped transform (AST) of the segmentedmotion eld generated by modi ed optical ow algorithm (MOFA) is suggested in this paper. Because the transform kernels are dependent on the shape of the coded region, information about the contours of the objects must be transmitted. To achieve data compression, coe cient selection function (CSF) is de ned for AST coe cients reduction. Accor...

Very low bit rate video coding using arbitrarily shaped region-based motion compensation

This paper presents a novel region-based video coding algorithm for very low bit-rate transmission. A huge amount of region shape information in a conventional region-based coding does not need to be transmitted in the new approach, because it can be synchronously obtained from a reconstructed picture in both encoder and decoder by image segmentation. Segmented region updating, which can obtain...

Shape Coding For Arbitrarily Shaped Object

The Arbitrarily Shaped Transform of Segmented Motion Field for a Pseudo Object-oriented Very Low Bit-rate Video Coding System

The arbitrarily shaped transform (AST) of the segmented motion eld generated by modi ed optical ow algorithm (MOFA) is suggested in this paper. Because the transform kernels are dependent on the shape of the coded region, information about the contours of the objects must be transmitted. To achieve data compression, coe cient selection function (CSF) is de ned for AST coe cients reduction. Sinc...

A low memory zerotree coding for arbitrarily shaped objects

The set partitioning in hierarchical trees (SPIHT) algorithm is a computationally simple and efficient zerotree coding technique for image compression. However, the high working memory requirement is its main drawback for hardware realization. We present a low memory zerotree coder (LMZC), which requires much less working memory than SPIHT. The LMZC coding algorithm abandons the use of lists, d...