Quad-Tree Modelling Of Colour Image Regions

R. W. McColl; G. R. Martin

doi:10.1117/12.968957

25 October 1988 Quad-Tree Modelling Of Colour Image Regions

R. W. McColl, G. R. Martin

Proceedings Volume 1001, Visual Communications and Image Processing '88: Third in a Series; (1988) https://doi.org/10.1117/12.968957
Event: Visual Communications and Image Processing III, 1988, Cambridge, MA, United States

Abstract

A model is presented which describes and codes the regions within a segmented image by means of quad-tree analysis of each region. A simple criterion is used to determine the importance of any node in the tree as a function of its perceptual relevance. This approach is an improvement on the parametric model which is frequently applied, by preserving textures at high compression. Chromaticity quantisation involves supplying only an average in each region. The additional use of dynamic entropy coding further improves the compression without additional distortion. In this way, compression to 0.5 bits/pel is achievable for colour images.

Citation Download Citation

R. W. McColl and G. R. Martin "Quad-Tree Modelling Of Colour Image Regions", Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, (25 October 1988); https://doi.org/10.1117/12.968957

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