Signal adaptive filtering method and signal adaptive filter for blocking effect and ringing noise reduction

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal adaptive filtering method and a signal adaptive filtering method for blocking effect and ringing noise reduction. More specifically, when one frame is composed of blocks having a predetermined size, In the filtering method, when bitstream video data is decomposed and inverse quantized, if the frame is an intra frame, blocking information for reducing the blocking effect and blocking noise reduction from the coefficients of predetermined pixels in the upper border area and the left border area of the data block, Generating ringing information for the mobile station; And adaptively filtering the inverse quantized and inverse discrete cosine transformed image data for the block according to the generated block information and ringing information.;According to the present invention, blocking noise and ringing noise are removed from the decompressed image based on the block, thereby improving the quality of the decompressed image.