Title :
Research and VLSI implementation on de-blocking method for MPEG
Author :
Lu, Xuming ; Tan, Hongzhou ; Xu, Yongjian ; Sun, Xu
Author_Institution :
Sch. of Inf. Sci. & Technol., Sun Yat-Sen Univ., Guangzhou, China
Abstract :
MPEG is one of the popular standards in image compression. Blocking is the most annoying artifact of encoding/decoding process. In this paper a post-processing deblocking algorithm for MPEG video stream is proposed. This method is based on the correlation of local pixels in block boundary region. It takes two 4×4 adjacent small blocks on both sides of a block boundary as a local processing region. Then the region is classified into smooth and gradual-change region, brightness step-change region, and texture region. The finally step is to eliminate blocking artifacts adaptively according to the classification. Compared with algorithm in, the proposed method offers a better result in de-blocking while preserving image details. Our design is implemented on FPGA and 0.13 μm CMOS technology.
Keywords :
VLSI; brightness; data compression; field programmable gate arrays; image classification; image coding; image texture; video streaming; CMOS technology; FPGA; MPEG video stream; VLSI implementation; block boundary region; brightness step change region; decoding process; encoding process; gradual change region; image compression; local processing region; post processing deblocking algorithm; texture region; Brightness; Hardware; Image coding; Pixel; Smoothing methods; Streaming media; Transform coding; Adaptive filter; Blocking artifacts; Region classification;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768215
