Digital Camera Simulation Using Spatially Varying PSF Convolutions
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United States of America Patent
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Sep 8, 2016
app pub date -
Mar 4, 2015
filing date -
Mar 4, 2015
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Abstract
A spatially varying PSF may be applied in a camera simulator by multiplying a fixed weight map by its impact region. Next, Fast Fourier Transform (FFT) both IWk and Ak, multiply the FFT results element by element and do an inverse FFT (IFFT) to bring the results back to spatial domain. The output image is exactly the same as the outcome of direct approach with the same interpolation method for spatially varying PSF. However, the operation now will be significantly faster in some embodiments.
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