Title :
DCT-domain blind measurement of blocking artifacts in DCT-coded images
Author :
Bovik, Alan C. ; Liu, Shizhong
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
A method for DCT-domain blind measurement of blocking artifacts is proposed. By constituting a new block across any two adjacent blocks, the blocking artifact is modeled as a 2-D step function. A fast DCT-domain algorithm has been derived to constitute the new block and extract all parameters needed. Then an human visual system (HVS) based measurement of blocking artifacts is conducted. Experimental results have shown the effectiveness and stability of our method. The proposed technique can be used for online image/video quality monitoring and control in applications of DCT-domain image/video processing
Keywords :
data compression; discrete cosine transforms; image coding; numerical stability; transform coding; video coding; visual perception; 2D step function; DCT-coded images; DCT-domain blind measurement; HVS based measurement; blocking artifacts; fast DCT-domain algorithm; online image/video quality monitoring; stability; Bit rate; Brightness; Discrete cosine transforms; Image coding; Laboratories; Local activities; Monitoring; Stability; Transform coding; White noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.941272
