Title :
A computational reinforced learning scheme to blind image deconvolution
Author :
Yap, Kim-Hui ; Guan, Ling
Author_Institution :
Sch. of Electr. & Inf. Eng., Sydney Univ., NSW, Australia
fDate :
2/1/2002 12:00:00 AM
Abstract :
This paper presents a new approach to adaptive blind image deconvolution based on computational reinforced learning in an attractor-embedded solution space. The new technique develops an evolutionary strategy that generates the improved blur and image populations progressively. A dynamic attractor space is constructed by integrating the knowledge domain of the blur structures into the algorithm. The attractors are predicted using a maximum a posteriori estimator and their relevance is evaluated with respect to the computed blurs. We develop a novel reinforced mutation scheme that combines stochastic search and pattern acquisition throughout the blur identification. It enhances the algorithmic convergence and reduces the computational cost significantly. The new technique is robust in alleviating the constraints and difficulties encountered by most conventional methods. Experimental results show that the new algorithm is effective in restoring the degraded images and identifying the blurs
Keywords :
convergence of numerical methods; deconvolution; genetic algorithms; image restoration; knowledge based systems; learning (artificial intelligence); search problems; blind image deconvolution; blur; convergence; dynamic attractor space; evolutionary optimization; image restoration; knowledge-based systems; reinforced learning; reinforced mutation; stochastic search; Additive noise; Additive white noise; Deconvolution; Degradation; Gaussian noise; Image restoration; Optical noise; Optical signal processing; Rendering (computer graphics); Signal processing algorithms;
Journal_Title :
Evolutionary Computation, IEEE Transactions on
DOI :
10.1109/4235.985688