Patent ID: 8223272
Filing Date: 2012-07-17
Classification: G06T,H04N

Abstract:
1. An image processing method, for processing an input video signal so as to produce an output video signal, the input video signal containing pixel values of a plurality of pixels; the input video signal comprising: producing a weighing signal and an area-identifying signal according to pixel difference values of the plurality of pixels of the input video signal, wherein the weighing signal contains weight values of the pixels, the area-identifying signal contains flag values of the pixels, and each of the flag values is configured to identify which of a first area, a second area and a third area the pixel difference value of the pixel corresponding to the flag value falls in; utilizing a low pass filter to perform a low-pass filtering processing on a first pixel among the pixels, wherein the pixel difference value of the first pixel falls in the first area, so that the pixel value of a first output pixel in the output video signal is obtained; utilizing a high-pass processing circuit to perform peaking processing on a second pixel among the pixels, wherein the pixel difference value of the second pixel falls in the second area, so that the pixel value of a second output pixel in the output video signal is obtained; and utilizing a transient improvement circuit to perform luminance transient improvement (LTI) processing on a third pixel among the pixels, wherein the pixel difference value of the third pixel falls in the third area, so that the pixel value of a third output pixel in the output video signal is obtained.