| 摘要 |
A method of filtering an input digital video raster signal to produce a double sided impulse response, the method comprising the steps of; applying the input video signal to a filter apparatus having one adaptive filter producing an impulse response on one side of the origin and another adaptive filter producing an impulse response on the other side of the origin, comparing each pixel of the video signal to adjacent pixel samples in the video raster to generate gain coefficient values for the pixels of the video signal, and adapting the impulse response of each filter by means of the generated gain coefficient values. Particular application to filtering noise from digital video signals allowing an easier compression. <IMAGE> |
