pcaker Posted February 28, 2018 Share Posted February 28, 2018 I am running Affinity Photo 1.6.1.93 on Win 7 Pro 64 bit. A photo scan with prominent paper texture stipples - circular bumps - throughout in regular arrays, failed to generate an FFT spectrum after running FFT Denoise. Procedure: I tried full photo, then later a smaller all white area. I selected FFT Denoise > Spectrum panel > Apply > FFT Denoise appeared to run > result: nothing, all black, no FFT spectrum generated. What am I doing wrong? Quote Link to comment Share on other sites More sharing options...
Staff stokerg Posted March 1, 2018 Staff Share Posted March 1, 2018 Hi pcaker and Welcome to the Forums, Could you post the image you are working with and this can be looked into further Quote Link to comment Share on other sites More sharing options...
pcaker Posted March 1, 2018 Author Share Posted March 1, 2018 Thanks stokerg. However, I realized my mistake last night. I had got in a muddle over the layers, and the wrong layer had been selected before the run. When I corrected this I got a proper looking spectrum, and reducing my brush size to 45 for the dark mask spots, got a really excellent result. As the FFT Denoise feature was the prime reason I discovered Affinity Photo and subsequently downloaded a trial version, I was very happy! - and I will now buy it. I had looked at other ways of implementing FFT on my textured photo scans, but I got wary when I saw how much fiddling with Windows parameters via command lines was involved - too risky, I thought. I think that the tutorial on FFT Denoise could be beneficially expanded, for example, what kind of layer should be preselected. I also think that this powerful feature should be given more prominence in Affinity Photo's promotional material, because I believe that neither PhotoShop nor PaintShop has it embedded or available as a convincing sounding plug-in. Quote Link to comment Share on other sites More sharing options...
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