A selective coding method based on global/local motion information

Lee, JB

doi:10.1016/S0165-1684(96)00142-9

1996-12-01

PRE

Lee, JB *

Kim, SD

DOI：10.1016/S0165-1684(96)00142-9

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摘要

En 中文

A selective coding scheme is proposed that describes a method for coding image sequences, differentiating bits between background and target region. The suggested method initially estimates global motion parameters and local motion vectors. Then segmentation is performed with a hierarchical clustering scheme and a quad-tree algorithm in order to divide a given image into the background and target region. Finally, image coding is done by assigning more bits to the target region and less bits to background so that the target region may be reconstructed with a high quality. Simulations show that the suggested algorithm performs well especially in the circumstances where background changes and target region is small enough compared to the background.

Keyword:

global/local motion information

quad-tree

selective coding

target