Blocking-artifact reduction algorithm based on edge detection
Jinmei Liu · Computer Engineering and Applications Journal · 2007
In order to reduce the visible blocking artifacts at the block boundary with Block Discrete Cosine Transform(BDCT)at low bit rates,a new blocking-artifact reduction algorithm in DCT domain is presented in this paper.An edge detection criterion is given.For the smooth blocks,one-dimension DCT on each row of the horizontally adjacent blocks is transformed and the parameters effecting on blocking artifacts are modified.For the texture blocks,the post-filtering technology is used to smooth block boundaries.The simulation result shows that the proposed method can reduce blocking artifacts as many as possible while preserving edge information.