An Algorithm of Adaptive Post-processing to Reduce the Block Artifacts in the Block-based Transform Image Coding Techniques

In the block-based transform image coding techniques,especially in the video coding at very low bit rate,block artifacts influence the subjective quality seriously.In this paper we propose an adaptive post-processing algorithm to reduce the block artifacts,which has the property of low computational burden and obvious effect.Simulation results show that the proposed algorithm can improve the subjective quality and objective PSNR of the coded image.