This paper describes an algorithm of video coding based on a three dimensional spatio temporal subband decomposition,and results are shown for a 112kb/s coder that is based on an unbalanced tree structured vector quantizer(UTSVQ) for the lowest frequency band and geometic vector quantizer (GVQ) for the higher frequency bands.

Trellis coded vector quantiztion of wavelet image using tree structure vector combination and classification;

Visualization of characteristic region in unstructured vector field

There are two drawbacks for the traditional LIC (line integral convolution) methods to visualize data of unstructured vector field: one is its restriction to a fixed resolution and the other is its poor ability of revealing vector magnitude.