IMAGE CODING BY AUTOREGRESSIVE SYNTHESIS
Surendra Ranganath · 1980
A new method of image coding by autoregressive (AR) synthesis is presented. The physics of image formation suggests that an image may be considered as a power spectrum. Using this formulation a Cosine transform of the sampled image is shown to yield a set of autocorrelations. These are used to find an equivalent AR model whose parameters are encoded for transmission, Compared to conventional Cosine transform coding, this method is shown to give superior resolution and is shown to suppress the block—effects present in block—by—block transform coding methods. Distinction between this method and linear predictive coding (LPC) used for speech data compression is made. Extensions and examples for two dimensional images are given.