Patent ID: 8059908
Filing Date: 2011-11-15
Classification: G06T,H04N

Abstract:
1. A computerized method comprising: computing a sample cell corresponding to a sample, the sample cell including pixels of an image according to a sample cell criteria and a sample cell shape, the sample cell criteria and the sample cell shape defining which pixels of the image are included in the sample cell; defining a target pixel cell corresponding to a target pixel, the target pixel cell including pixels of the image according to a target pixel cell criteria, the target pixel cell criteria defining which pixels of the image are included in the target pixel cell; computing a sample filter coefficient based on pixels located in both the sample cell and the target pixel cell; defining a filter tap based on the sample filter coefficient, the filter tap corresponding to the target pixel; generating a tap extension corresponding to the target pixel, the tap extension defining, according to a tap extension criteria, additional pixels of the image to be included in an extended target pixel cell, the extended target pixel cell including the pixels in the target pixel cell and the additional pixels; computing a tap extension filter coefficient based on pixels located in both the extended target pixel cell and the sample cell; varying the shape of the sample cell according to sample cell shape parameters; extracting an optimal filter weight for the target pixel based on the sample filter coefficient and the tap extension filter coefficient.