Patent ID: 8565311
Filing Date: 2013-10-22
Classification: H04N

Abstract:
1. An image processing apparatus for removing a noise component of decoded image data in which an image stream generated through a lossy coding has been decoded, the apparatus comprising: a storage unit configured to input and store a frame image for each block; a motion vector detector configured to detect a motion vector of each block based on the frame image stored in the storage unit and a newly input frame image; a holding unit configured to hold a single frame's worth of a motion vector of an objective block and a single frame's worth of motion vectors of surrounding blocks of the objective block detected by the motion vector detector; a difference calculator configured to calculate the difference between each of the held motion vectors of surrounding blocks and the held motion vector of the objective block to generate a difference value map; an outline extraction unit configured to extract blocks in an outline domain included in the frame image in a case that a value in which the difference value map generated by the difference calculator is differentiated using a differential filter is larger than a threshold; and a filter processing unit configured to perform filter processing for each block of the blocks in the outline domain extracted by the outline extraction unit.