Title :
A new cascaded spatio-temporal noise reduction scheme for interlaced video
Author :
Jostschulte, Klaus ; Amer, Aishy
Author_Institution :
AG Schaltungen der Informationsverarbeitung, Dortmund Univ., Germany
Abstract :
The quality of a television system is significantly determined by the amount of distortions within the displayed image. One of these distortions is white Gaussian noise. So a spatio-temporal algorithm for reducing noise in interlaced video is presented in this paper. It consists of a detail preserving spatial algorithm which uses a set of contour oriented lowpass-filters that are controlled via corresponding highpass masks. The influence of the number of different masks as well as of the coefficients are analyzed. The temporal scheme works in two subbands and makes use of some perception properties of the human eye. The high efficiency of this cascaded system is proved by simulations
Keywords :
Gaussian noise; low-pass filters; television receivers; video signal processing; visual perception; white noise; SNR; TV sets; cascaded spatio-temporal noise reduction; cascaded system; coefficients; contour oriented lowpass-filters; detail preserving spatial algorithm; distortions; high efficiency; highpass masks; human eye; interlaced video; noise reduction; perception properties; simulations; spatio-temporal algorithm; subbands; television system quality; temporal scheme; white Gaussian noise; Adaptive filters; Delay; Humans; Image resolution; Motion detection; Noise reduction; Signal to noise ratio; TV; Visual communication; White noise;
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
DOI :
10.1109/ICIP.1998.723439
