Changes between Version 5 and Version 6 of Examples/Fft2dHighpass
 Timestamp:
 May 7, 2010, 8:05:22 AM (11 years ago)
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Examples/Fft2dHighpass
v5 v6 1 1 == fft2dhighpass == 2 2 3 Applies a highpass filter to a BMP image, using a [http://en.wikipedia.org/wiki/Fast_fourier_transform Fast Fourier Transform] The first argument is the lower cutoff frequency.3 Applies a highpass filter to a BMP image, using a [http://en.wikipedia.org/wiki/Fast_fourier_transform Fast Fourier Transform]. The first argument is the lower cutoff frequency. 4 4 5 5 Each of the RGB channels is converted to the frequency domain, the lower frequencies are set to zero, then the channels are converted back to the image domain.