Design of high-performance wavelets for image coding using a perceptual time domain criterion. (Q1862835)

This paper presents a new biorthogonal linear-phase wavelet design for image compression. Instead of calculating the prototype filters as spectral factors of a half-band filter, the design is based on the direct optimization of the lowpass analysis filter using an objective function directly related to a perceptual criterion for image compression. This function is defined as the product of the theoretical coding gain and an index called the peak-to-peak ratio, which was shown to have high correlation with perceptual quality. The results show an improvement in perceptual image quality compared to other coders used in literature.