Title :
Critical quantization decisions in transform coding and blocking artifacts
Author :
S.H. Oguz;T.Q. Nguyen; Yen Hen Hu
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
In this work, a mechanism contributing to the blocking artifacts of standard block based transform coding schemes is stated and a simple solution is proposed for reducing its effect. The proposed solution can be easily incorporated into the encoding algorithms of existing two dimensional (2-D) discrete cosine transform (DCT) based image and video coding standards (JPEG, MPEG-1 and 2, H-261, H-263) without the need for a modification in their bitstream syntax.
Keywords :
"Quantization","Transform coding","Discrete cosine transforms","Image coding","Video coding","Pixel","Image reconstruction","Two dimensional displays","Partitioning algorithms","Frequency"
Conference_Titel :
Circuits and Systems, 1999. ISCAS ´99. Proceedings of the 1999 IEEE International Symposium on
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.779962
