Title :
Scalar quantization in the PWL transform spectrum domain
Author :
Baran, Remigiusz ; Wiraszka, Dorota ; Dziech, Wiera
Author_Institution :
Kielce Univ. of Technol., Poland
Abstract :
The problem of image compression using the PWL (periodic Walsh piecewise-linear) transform and optimal scalar quantization of the PWL spectrum is presented. A short description of the PWL transform is included. Optimal Lloyd-Max quantization is also presented. The procedure of the presented compression method is based on quantization of a class of scalar variables representing blocks of the image. The effectiveness of the compression method is examined and a visual representation of the results is included
Keywords :
Walsh functions; data compression; image coding; piecewise linear techniques; quantisation (signal); spectral analysis; PWL transform spectrum domain; image blocks; image compression; optimal Lloyd-Max quantization; periodic Walsh piecewise-linear transform; scalar quantization; Digital signal processing; IP networks; Image coding; Image sampling; Paper technology; Piecewise linear techniques; Quantization; Signal processing; Transform coding; Web sites;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 2000. MMET 2000. International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-6347-7
DOI :
10.1109/MMET.2000.888560
