An Efficient Spatio-Temproal OS-Filter for Gamma-Corrected Video Signals
نویسندگان
چکیده
* This work was supported in part by NATO under grant 0103/88. Dr. Kleihorst is currently with Philips Research Laboratories, Eindhoven, the Netherlands. ABSTRACT Even original video sequences are often corrupted by a certain amount of noise. As a result of the gammacorrection in camera's, the observation noise is signaldependent. In this paper we present a spatio-temporal order statistic (OS) noise-filter that takes into account the gamma-correction in the camera. This filter uses higherorder order statistics (HOOS). We make use of a rangetest (RT) to determine on which signal values an estimate should be based. The noise-filter obtained in this way is adaptive and computationally efficient.
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