METHOD AND DEVICE FOR ANISOTROPIC FILTERING OF DYNAMIC VIDEO PICTURE Russian patent published in 2008 - IPC G06T5/20 

FIELD: information technology.

SUBSTANCE: pixels data of the current video sequence frame is recorded to the buffer of current frame, and the pixels data of the previous video sequence frame is recorded to the buffer of previous frame; motion between current and previous video sequence frames is determined in the differences calculation block; the calculated motion between previous and current frames is recorded to the motion data buffer; the data from the current frame buffer is recorded to the previous frame buffer; partial derivatives for every channel of the current frame are determined in the partial derivative calculation blocks for X-direction and Y-direction; spatial averaging of directional derivatives for each channel of the current frame, as well as channels smoothing in the first and the second smoothing blocks are performed; direction of the edge for every pixel position of the current frame is calculated in the arctangent calculator; anisotropic filter for every pixel position of the current frame is formed and recorded to the memory of filter values; anisotropic filtering of all pixels of the current frame, their motion exceeding predefined limit in the anisotropic filtering block, is done.

EFFECT: increased quality of dynamic video picture due to changes in anisotropic filtering with adaptive mask.

7 cl, 2 dwg