Comparative Analysis of Methods to Reduce Blocking Artifacts in Images and Videos

摘要

The demand for communication with moving video picture is increasing rapidly. Video and image compression is the wide spread field in communication engineering and computer science. It is useful for illustration of video data, for storage and/or transmission. Block based motion estimation and motion compensation method is widely used in most of video coding standards including H.264/AVC to compress raw video. There is a loss of accuracy of block coefficients during transform coding and quantization process. It will result in visually disturbing discontinuities at the block boundaries of reconstructed frame which reduce visual quality. Discontinuities at block boundaries are known as Blocking Artifacts. In order to remove blocking artifacts and improve the quality of the reconstructed video, several de-blocking algorithms have been proposed.