Title :
Multichannel image restoration using compound Gauss-Markov random fields
Author :
Molina, Rafael ; Mateos, Javier ; Katsaggelos, Aggelos K.
Author_Institution :
Dept. de Ciencias de la Comput. e Inteligencia Artificial, Granada Univ., Spain
Abstract :
A solution to the multichannel image restoration problem is provided using compound Gauss-Markov random fields. For the single channel deblurring problem the convergence of the simulated annealing (SA) and iterative conditional mode (ICM) algorithms has not been established. We propose two new iterative multichannel restoration algorithms which can be considered as extensions of the classical SA and ICM approaches and whose convergence is established. Experimental results with color images demonstrate the effectiveness of the proposed algorithms
Keywords :
Gaussian processes; Markov processes; convergence of numerical methods; image colour analysis; image restoration; iterative methods; parameter estimation; random processes; simulated annealing; MAP estimation; algorithm convergence; color images; compound Gauss-Markov random fields; experimental results; iterative conditional mode algorithm; iterative multichannel restoration algorithms; maximum a posteriori estimates; simulated annealing algorithm; single channel deblurring; stochastic relaxation; Color; Computational modeling; Convergence; Gaussian processes; Image processing; Image restoration; Iterative algorithms; Markov random fields; Probability distribution; Simulated annealing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.861892