Title :
Adaptive error diffusion method for image quantisation
Author :
Mironov, R.P. ; Kunchev, R.K.
Author_Institution :
Dept. of Radiocommun. & Signal Processing, Sofia Tech. Univ., Bulgaria
Abstract :
An adaptive error diffusion method for image quantisation is presented. The error filter coefficients are adapted using a generalised two-dimensional LMS algorithm and the quantisation scale is calculated on the basis of the image histogram. The developed method provides a minimum reconstruction error, a decrease in false contours in the homogeneous areas and precise reproduction of the edges in the output image.
Keywords :
data compression; edge detection; filtering and prediction theory; image coding; image reconstruction; least squares approximations; adaptive error diffusion method; edge reproduction; error filter coefficients; false contours; generalised two-dimensional LMS algorithm; homogeneous areas; image histogram; image quantisation; minimum reconstruction error; output image; quantisation scale;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931349
