Method and apparatus for setting motion region in video signal coding using feature point-based motion compensation

摘要

In the feature point-based motion compensation, a regular motion region of a moving object in an image for extracting a feature point is set based on an error signal between a current block and a corresponding block of a previous frame. To this end, , A difference signal between each pixel in the corresponding blocks between the input current frame to be encoded and the reconstructed previous frame is calculated and then a difference signal between each calculated difference signal and each predetermined threshold value The moving object including the moving object is detected, the spot noise is removed by using the relationship between each pixel and other pixels adjacent thereto in the moving region including the moving object thus detected, and the motion of the frame in which the spot noise is removed A motion including a moving object in units of pixels for each pixel in the region By dividing a frame into a plurality of blocks each having a predetermined size and replacing each divided block having integer values with blocks having an integer value of 0 or 1, The motion area information is generated by replacing the motion area information with another integer value of 0 or 1, which enables the distinction between the area including the moving object and the area not including the moving object. Therefore, according to the present invention, feature point-based motion compensation is performed only on blocks having a moving moving object on the basis of motion region information in the corresponding blocks of the current frame and the reconstructed previous frame, The accuracy of compensation can be effectively improved.