Digital Holography Methods

The iterative 2D windowed Fourier transform: A SOS approach to speckle noise reduction in digital holography

“…If the hologram is recorded [1] in accordance with the Shannon conditions, we obtain an image of the object wave-front from digital reconstruction of the hologram. The complex field of the object is computed by Single Fast Fourier Transform (S-FFT) or Double Fast Fourier Transform (D-FFT) algorithms using adjustable magnification [2]. The numerical calculation of the diffracted field yields a complex amplitude O 0 (x, y) sampled on a grid corresponding to the number of reconstruction points of the algorithm.…”