Vector quantization of image subbands: a survey

Vector quantization (VQ) and subband decomposition provide an effective means of image compression. VQ helps in the conversion of the decomposed signal into bits. The conversion takes advantage of the flexible partitions of the higher dimensional vector spaces, and the inter and intraband correlation. A survey of the methods used since 1988 to study VQ applications to subband/wavelet transform coefficients is presented.