Patent ID: 9514519
Filing Date: 2016-12-06
CPC Classification: G06T,H04N

Claim Text:
1. An image filter for calculating a pixel value of target pixel in an output image from pixels belonging to a target area in an input in moving image and from a filter coefficient vector, comprising: a non-transitory computer readable recording medium having recorded thereon an instruction for executing by one or more processor to perform steps of: (a) perform a variable length decoding of the moving image, and outputting a quantized prediction residual data and filter coefficient information; (b) generate a predicted image based on an image stored in a buffer memory; (c) perform inversed quantization and inverse transformation to the quantized prediction residual data, and outputting prediction residual; (d) add the predicted image and the prediction residual, and outputting a decoded image; (e) perform deblocking process to the decoded image, and outputting a deblocked image; and (f) calculate a filter coefficient vector based on the filter coefficient information; (g) calculate a pixel value of target pixel in an output image from pixels belonging to a target area in the deblocked image and from the filter coefficient vector; and (h) change the filter coefficient vector according to pixel values corresponding to the target area in the deblocked image.