Title :
Model adaptive image restoration
Author :
Pun, Wai Ho ; Jeff, Brian D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Brigham Young Univ., Provo, UT, USA
Abstract :
A new model adaptive method is proposed for restoration of blurred and noise corrupted images. This approach exploits information available from observed data to choose the appropriate optimization criterion and produce an approximate maximum likelihood solution. The generalized p-Gaussian family of probability distributions is used to model a wide range of observed noise classes. Distribution shape parameters are estimated from the image, and the resulting maximum likelihood optimization problem is solved. A fast iterative algorithm for this method is presented and analyzed. Experimental results indicate that this method outperforms the least squares method by taking advantage of the non-Gaussian characteristics of the noise data
Keywords :
Gaussian distribution; Gaussian processes; adaptive signal processing; image restoration; iterative methods; maximum likelihood estimation; optimisation; parameter estimation; approximate maximum likelihood solution; blurred images; distribution shape parameters; experimental results; fast iterative algorithm; generalized p-Gaussian probability distributions; image restoration; maximum likelihood optimization problem; model adaptive image restoration; noise corrupted images; noise data; non-Gaussian characteristics; observed noise classes; parameter estimation; Algorithm design and analysis; Image restoration; Iterative algorithms; Least squares approximation; Least squares methods; Maximum likelihood estimation; Noise shaping; Parameter estimation; Probability distribution; Shape;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342581