VIDEO ENCODING/DECODING METHODS, VIDEO ENCODING/DECODING DEVICES AND PROGRAMMES THEREFOR Russian patent published in 2015 - IPC H04N19/00 G06T5/20 

FIELD: physics, video.

SUBSTANCE: invention relates to video encoding/decoding techniques which employ a loop filter which reduces blocking noise. The technical result is achieved due to that a video encoding/decoding device, which encodes or decodes video using a loop filter, includes a deviation calculating unit which calculates deviation between a target noise cancellation pixel and a neighbouring pixel of the target pixel using a decoded image. A pattern form establishing unit limits the pattern form such that the less the deviation from the maximum deviation in the decoded image, the smaller the pattern form. When removing target pixel noise, using a weight coefficient in accordance with the degree of similarity between the pattern of the target pixel and the pattern of each search point in the form of a search and a weighted sum of pixel values at search points, the loop filter compares patterns using the limited pattern form and removes the target pixel noise.

EFFECT: reduced computational complexity of the noise cancellation filter, thereby preventing deterioration of encoding efficiency.

5 cl, 19 dwg