An efficient spatio-temporal OS-filter for gamma-corrected video signals

Author

Kleihorst, Richard P. ; Lagendijk, Reginald L. ; Biemond, Jan

Author_Institution

Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands

Volume

1

fYear

1994

fDate

13-16 Nov 1994

Firstpage

348

Abstract

Even original video sequences are often corrupted by a certain amount of noise. As a result of the gamma-correction in cameras, the observation noise is signal-dependent. We present a spatio-temporal order statistic (OS) noise-filter that takes into account the gamma-correction in the camera. This filter uses higher-order order statistics (HOOS). We make use of a range-test (RT) to determine on which signal values an estimate should be based. The noise-filter obtained in this way is adaptive and computationally efficient

Keywords

FIR filters; filtering theory; higher order statistics; image sequences; noise; video cameras; video signal processing; FIR filter; computationally efficient filter; gamma-corrected video signals; higher order order statistics; noise filter filter; range test; signal dependent observation noise; spatio-temporal OS-filter; video sequences; Apertures; Cameras; Cathode ray tubes; Circuit noise; Filtering; Filters; Information theory; Signal to noise ratio; Statistics; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference

Conference_Location

Austin, TX

Print_ISBN

0-8186-6952-7

Type

conf

DOI

10.1109/ICIP.1994.413333

Filename

413333