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Schematic illustration to the principle of scattering‐pattern shift in analogy to the Fourier Transform. a–c) Coding patterns of a cross, gradient distribution, and their modulus, respectively. d–f) Scattering patterns calculated by FFT from the coding patterns in panels (a)–(c), respectively. g–h) The analogical frequency spectra of the coding patterns in panels (a)–(c), respectively.
