Title :
A non-intrusive scheme for measuring the signal-to-noise ratio in television images
Author :
Zhang, Qin ; Ward, Rabab
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
We describe a method which automatically measures the signal-to-noise ratio (SNR) of a television image. Our method does not require test signals or the use of a spectrum analyzer. In our scheme, we use a second order two-dimensional digital filter to separate the snow noise and the picture contents. Then, the SNR of the picture is evaluated by the snow noise contents left in the filtered picture. Computer simulation shows a good agreement between the results of our method and the theoretical values
Keywords :
filtering and prediction theory; image processing; noise measurement; television interference; television reception; two-dimensional digital filters; video signals; SNR; computer simulation; filtered picture; non-intrusive method; picture contents; second order two-dimensional digital filter; signal-to-noise ratio measurement; snow noise; television images; Bandwidth; Cable TV; Digital filters; Electric variables measurement; FCC; Noise measurement; Signal to noise ratio; Snow; Spectral analysis; Testing;
Conference_Titel :
Electrical and Computer Engineering, 1993. Canadian Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-2416-1
DOI :
10.1109/CCECE.1993.332381
