Open AccessMemory-efficient reference calculation of light propagation using the convolution method
Author(s) -
Petr Lobaz
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.002795
Subject(s) - aliasing , computer science , holography , convolution (computer science) , kernel (algebra) , optics , fourier transform , process (computing) , discretization , algorithm , upsampling , circular convolution , fast fourier transform , computer vision , artificial intelligence , physics , fourier analysis , mathematics , mathematical analysis , combinatorics , undersampling , artificial neural network , fractional fourier transform , image (mathematics) , operating system
In computational Fourier optics, computer generated holography, etc., coherent light propagation calculation between parallel planes is the essential task. A proper calculation discretization in the off-axis case leads to big memory demands in order to avoid aliasing errors. The proposed method typically cuts down the memory demands one hundred times. The principle of the method is based on the observation that there is a close correspondence between the reconstruction process (opposite of the sampling process) and prefiltering of the convolution kernel.