Patent ID: 8305497
Filing Date: 2012-11-06
Classification: G06T,H04N

Abstract:
1. A processor-implemented method for processing digital video signals, the method comprising: (a) upscaling an input video signal having a first dimension to generate an upscaled video signal having a first dimension larger than the first dimension of the input video signal; (b) filtering the upscaled video signal using a filter to generate a filtered video signal, wherein the filter comprises two passbands interleaved with two stopbands; and (c) processing the filtered video signal to generate an output video signal, wherein the processing is dynamically controlled based on compression information associated with a compressed video bitstream from which the input video stream is generated, wherein strength of the processing is dynamically controlled based on the magnitude of the filtered video stream, such that the method reduces both (1) mosquito noise present in the input video signal and (2) aliasing noise resulting from the upscaling, wherein the strength of the processing for low- and high-magnitude filtered video is less than the strength of the processing for intermediate-magnitude filtered video.