Patent ID: 9406106
Filing Date: 2016-08-02
CPC Classification: G06T

Claim Text:
1. A ringing artifact removing method, adapted to program a processor of an image processing circuit, the ringing artifact removing method comprising: receiving grayscale values corresponding to a plurality of display data of an input frame; calculating a regulating reference value corresponding to each of the display data according to the display data and the display data at adjacent display positions, comprising: calculating an edge value and a ring reference value corresponding to each of the display data according to the grayscale value corresponding to the display data and the grayscale values corresponding to the display data at adjacent display positions, wherein the input frame is a scaled frame of an original frame and a scaling rate of the input frame relative to the original frame is taken into account when calculating the edge value and calculating the ring reference value; and calculating the regulating reference value corresponding to each of the display data according to the edge value and the ring reference value; and regulating the grayscale values corresponding to the display data according to the regulating reference values respectively corresponding to the display data to output grayscale values corresponding to a plurality of regulated display data, wherein the edge value corresponding to each of the display data is calculated by using following formula, wherein x is a factor corresponding to the display data, e(x) is the edge value corresponding to the display data, p