Am 14.10.2021 um 12:53 schrieb Paul B Mahol:
On Thu, Oct 14, 2021 at 12:29 PM Michael Koch <astroelectro...@t-online.de>
wrote:
Am 14.10.2021 um 12:07 schrieb Paul B Mahol:
Sorry but I'm not on windows, so I can not use your script.
Then try the below (slightly improved) version. It would become much
simpler with variables:
ARRAY_H = pow(2,ceil(log(ceil(W*10/9))/log(2)))
ARRAY_V = pow(2,ceil(log(ceil(H*10/9))/log(2)))
The test image contains wavelengths from 4 to 8 (in the center) to 16
pixels per linepair.
The filter wavelength is independant of input size. You can change the
size in the first command (but it must be 1:1 aspect ratio, otherwise
hstack would fail)
Since when hstack fails because of different aspect ratio?
Because I first make the left half of the test image, then transpose it
and then hstack them together
The fftfilt examples do of course work with any aspect ratio.
Michael
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