Design of high performance wavelets for image coding
M.A.M. Rodrigues, Eduardo A. B. da Silva, Paulo S. R. Diniz · 2002
This paper addresses the design of high performance wavelets for image coding using a perceptual criterium defined as the product of the theoretical coding gain and an index recently reported called peak-to-peak ratio (PPR). It presents some new results in biorthogonal linear-phase wavelet design for image compression. A simplified design procedure was developed using a technique to generate high-order filters from lower-order ones. With this function the perceptual quality expected for the compressed images can be evaluated without having to go through tests with experts. Although this technique is sub-optimal, it yields wavelets which are optimal or very close to it. Some examples are given.