Patent ID: 8131105
Filing Date: 2012-03-06
Classification: H04N

Abstract:
1. An image processing method for processing block effect in an image, comprising: detecting at least an edge in the image; selecting at least a first pixel at one side of the edge and at least a second pixel at the other side of the edge; calculating a pixel difference between the first pixel and the second pixel; estimating whether the pixel difference is located in a predetermined range to determine whether the edge is a block effect; and when the edge is the block effect, filtering the block effect; wherein the step of detecting at least an edge in the image comprises detecting a plurality of edges in the image, and the image processing method further comprises: recording locations of a plurality of block effects; and controlling the step of filtering the block effect according to the locations of the block effects; wherein the step of controlling the step of filtering the block effect according to the locations of the block effects comprises: determining whether a first difference between the location of a current block effect and the location of a previous block effect is equal to a second difference between the location of the previous block effect and the location of a block effect right before the previous block effect; and disabling the step of filtering the block effect when the first difference and the second difference are unequal.