Patent ID: 6414657
Filing Date: 2002-07-02
Classification: G09G,H04N

Abstract:
A pseudo-contour noise detecting device for detecting pseudo-contour noise, the pseudo-contour noise embodied as contour lines appearing spuriously in a motion picture displayed such that a gradation display is performed by using a plurality of weighted subfields into which one field of an input image is divided, the input image including a plurality of pixels, the device comprising a pseudo-contour noise calculating unit, the unit including:a system that performs a logic operation, for each subfield, on each pixel of at least a portion of the input image using a value of the each pixel and values of at least one of the pixels surrounding the each pixel; a system that applies a weight of each subfield to a result of the logic operation for each subfield; and a system that sums results of the weighted logic operations for the plurality of subfields to calculate a value corresponding to an amount of pseudo-contour noise.