Title :
A block classification algorithm for DCT-based digital video coding
Author :
Suthaharan, Shan ; Yuen, Michael ; Wu, Henry R.
Author_Institution :
Gippsland Sch. of Comput. & IT, Monash Univ., Churchhill, Vic., Australia
Abstract :
This paper presents a new block classification algorithm for block filtering in the DCT-based digital video coding. In general, linear block filters are applied to every block on the reconstructed image regardless of their degree of visibility to reduce the blocking artifacts. The method proposed in this paper allows the coding scheme to identify the blocks that are apparent and significantly contribute to the overall blocking artifacts so that the block filters can be applied only to those blocks. The method calculates the block classification parameter from the original image and transmitted or stored to be used as a threshold value in the block classification process at the decoding stage
Keywords :
discrete cosine transforms; filtering theory; image classification; transform coding; video coding; DCT-based digital video coding; block classification algorithm; block filtering; blocking artifacts; linear block filters; reconstructed image; Classification algorithms; Decoding; Distortion measurement; Image reconstruction; Nonlinear filters; Quantization; Random variables; Statistical analysis; Testing; Video coding;
Conference_Titel :
TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-4365-4
DOI :
10.1109/TENCON.1997.648527
