Doukoglou T D, Hunter I W, Kearney R E
Department of Biomedical Engineering, McGill University, Montréal, Québec, Canada.
Med Biol Eng Comput. 1993 May;31(3):277-83. doi: 10.1007/BF02458047.
The problem of identifying optical system point spread functions (PSFs) arises frequently in the area of image processing and restoration. The paper presents a method for determining two-dimensional PSFs from input/output image signals. The PSF of the system is determined from a set of linear equations involving elements of the input autocorrelation function and the input/output cross-correlation function. The resulting PSF is the one that minimises the sum of squares difference between the actual output image and the predicted one.
