A Post-processing De-blocking Algorithm Based on Characteristics of Blocks
Cao Xiao-qiang · Science Technology and Engineering · 2012
The block-based DCT compression technology often cause blocking artifacts near the block boundaries at low bit rates,seriously harming the image’s subjective quality.An adaptive post-processing de-blocking algorithm based on the characteristics of blocks is proposed.The images taking units of 8 × 8 block divide into smooth area,edge area and texture area,uses the most appropriate filtering algorithms in the different regions.Simulation results show that the proposed algorithm can effectively remove the blocking artifacts and preserve the edge and texture information.