Fourier transform (FT) of the 2-dimensional square function
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uppose we were looking at the image of a tiled floor made up alternately of black and white squares aligned with their edges parallel to the x- and y-directions. If the floor were infinite in extent, the mathematical distribution of reflected light could be regarded in terms of a two-dimensional Fourier series. With each tile having a length l, the spatial period along either axis would be 2l, and the associated fundamental angular spatial frequencies would equal pi/l. These and their harmonics would certainly be needed to construct a functiondescribing the scene. Calculate the Fourier transform (FT) of the 2-dimensional square function for this tiled floor.
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