Title :
Proposed technique for reduction of contouring in quantised (monochrome) image signals
Author :
Downing, O.J. ; Thorpe, P.L.M.
Author_Institution :
University of Bradford, School of Electrical and Electronic Engineering, Bradford, UK
Abstract :
A technique of detecting the presence of quantisation-induced contours in digital monochrome image signals is presented and an interpolation process is proposed that reduces their visibility. Brief informal subjective tests suggest that the improvement is equivalent to a doubling in the number of quantisation levels.
Keywords :
digital signals; picture processing; video signals; digital monochrome image signals; interpolation process; quantisation induced contours detection; subjective tests; video signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790004
