Title :
Interframe slope overload for television-picture noise reduction
Author_Institution :
University of Essex, Department of Electrical Engineering Science, Colchester, UK
Abstract :
Results of experiments on the temporal slope-overload phenomenon obtained with a 625 line/5.5 MHz digital television interframe delta modulator are reported. Whereas pictures containing genuine movement are heavily degraded, still pictures contaminated by noise can be rendered usable: s.n.r. improvements from 17 dB (original) to 34 dB (processed) have been obtained
Keywords :
computerised picture processing; digital signals; interference suppression; video signals; computer controlled digital television coding system; interframe delta modulator; television picture noise reduction; temporal slope overload phenomenon;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780371
