Title :
Numerical methods for DC coefficient restoration
Author :
Tse, Fu-wing ; Cham, Wai-Kuen
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
Abstract :
We give a detailed investigation of the numerical methods solving the mathematical problem associated to the DC coefficient restoration scheme using global estimation with block selection, including successive overrelaxation, conjugate gradient and preconditioned conjugate gradient
Keywords :
conjugate gradient methods; estimation theory; image coding; transform coding; DC coefficient restoration; block selection; conjugate gradient; global estimation; image coding; numerical methods; preconditioned conjugate gradient; successive overrelaxation; Character generation; Computational efficiency; Convergence; Equations; Image coding; Image restoration; Iterative methods; Large-scale systems; Parameter estimation; Tail;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652123
