Title :
Orthogonal l1 technique for image restoration
Author :
Bhatt, M.R. ; Desai, U.B.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Bombay, India
Abstract :
A novel approach to the restoration of an image is considered when both the point spread function and the blurred image suffer from errors. The usual approaches such as l1 and l2 are found to be inappropriate. A robust method, the orthogonal l1 approach, is suggested for the restoration of images corrupted by errors in the point spread function and measurement. Since the orthogonal l1 error function has several local minima, the use of the Solis and Wets random optimization algorithm is proposed. Simulation results are presented to illustrate the merit of the approach
Keywords :
optimisation; picture processing; blurred image; error function; image restoration; local minima; orthogonal l1 approach; point spread function; random optimization algorithm; Additive noise; Equations; Finite impulse response filter; Gaussian noise; Image restoration; Measurement errors; Measurement standards; Noise measurement; Pixel; Robustness;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150654