Abstract
A method is proposed in this paper using incoherent light with complex coding to realize 2-D complex discrete Fourier transform (DFT). A multi-imaging system is set up, which fully uses the inherent property of optical parallel processing, 2-D input data can be processed simultaneously. 2-D input data of N=6 is chosen to verify the method. The experimental results accord well with computer simulated results. On this basis, complex filtering and inverse Fourier transform (IDFT) are also discussed. So, an equivalent 4-f system with the three parts is built, which can be used in image filtering in incoherent optics.
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