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Original video signals are often corrupted by a certain amount of noise originating from the camera electronics. As a result of the gamma correction in cameras, the observed noise is signal dependent. In this correspondence, we present a spatio-temporal order-statistic (OS) noise filter that takes into account the gamma correction in the camera. The calculation of the filter coefficients requires higher-order orderstatistics (HOOS) of the noise process. We make use of a range test (RT) todoi:10.1109/83.624968 pmid:18282899 fatcat:sandj6lqnnbgpeuvdpaepj5c3y