Tree-structured vector quantization with input-weighted distortion measures

Pamela C. Cosman; Karen Oehler; Amanda A. Heaton; Robert M. Gray

doi:10.1117/12.50308

1 November 1991 Tree-structured vector quantization with input-weighted distortion measures

Pamela C. Cosman, Karen Oehler, Amanda A. Heaton, Robert M. Gray

Proceedings Volume 1605, Visual Communications and Image Processing '91: Visual Communication; (1991) https://doi.org/10.1117/12.50308
Event: Visual Communications, '91, 1991, Boston, MA, United States

Abstract

A greedy tree-growing algorithm is used in conjunction with an input-dependent weighted distortion measure to develop a tree-structured vector quantizer. Vectors in the training set are classified, and weights are assigned to the classes. The resulting weighted distortion measure forces the tree to develop better representations for those classes that are considered important. Results on medical images and USC database images are presented. A tree-structured vector quantizer grown in a similar manner can be used for preliminary classification as well as compression.

Citation Download Citation

Pamela C. Cosman, Karen Oehler, Amanda A. Heaton, and Robert M. Gray "Tree-structured vector quantization with input-weighted distortion measures", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); https://doi.org/10.1117/12.50308

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