Patent Document ID: 20020005857
Application ID: 09916285
Patent Status: 0

Claim One:
1. 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 pixels surrounding the each pixel; and a system that calculates a value corresponding to an amount of pseudo-contour noise according to a number of subfields in which a difference is detected between the value of the each pixel and the values of the at least one pixels surrounding the each pixel.