Samweow Posted July 22, 2020 Share Posted July 22, 2020 So I posterised this image, I then converted it to black and white. I would like to get rid of most of the grain on the face, so that the face is mono color but you can still see the eyes, nose and mouth. some grain would be all right but I want way less. I fiddled around with the denoise tool, but nothing seemed to make a difference, even after merging the layers. I think the core of the problem comes from not being able to posterise my image enough. I brought my posterise down to the lowest level(2), but you can still see blue, red, yellow, green, turquoise and black in this image. That's too many colours. Original image Quote Link to comment Share on other sites More sharing options...
Staff stokerg Posted July 23, 2020 Staff Share Posted July 23, 2020 Hi Samweow, You could try Denoising the original image, then using the Posterize adjustment, then the Black and White. As the leftover pixels on the face aren't technically noise, the denoise filter won't remove them. But you could paint over them with a brush or use the Clone Tool to clone over them from a clear part of the face. I'm sure if anyone else has a better method, they will reply Quote Link to comment Share on other sites More sharing options...
Palatino Posted July 23, 2020 Share Posted July 23, 2020 I went a different way. Edvard_Munch,_1893.afphoto Samweow 1 Quote Thanks to DeepL. Link to comment Share on other sites More sharing options...
Samweow Posted July 24, 2020 Author Share Posted July 24, 2020 @stokerg Is there a way to do some kind of thresholding within Affinity like described in these screenshots? Quote Link to comment Share on other sites More sharing options...
firstdefence Posted July 24, 2020 Share Posted July 24, 2020 What exactly are you aiming for? Quote iMac 27" 2019 Somona 14.3.1, iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions Link to comment Share on other sites More sharing options...
Samweow Posted July 25, 2020 Author Share Posted July 25, 2020 On 7/24/2020 at 12:22 PM, firstdefence said: What exactly are you aiming for? The effect given to the circles on the left, where they're less grainy in the second pic Quote Link to comment Share on other sites More sharing options...
thomaso Posted July 26, 2020 Share Posted July 26, 2020 On 7/22/2020 at 10:16 PM, Samweow said: So I posterised this image, your code says 'threshold'. Which looks like this in Affinity, applied to your posterised sample, ... and also does what your further screenshot shows: adjust contrast within a certain area of flexible dimensions: posterize & threshold.m4v Samweow 1 Quote macOS 10.14.6 | MacBookPro Retina 15" | Eizo 27" | Affinity V1 Link to comment Share on other sites More sharing options...
firstdefence Posted July 26, 2020 Share Posted July 26, 2020 But this isn’t “grain", it’s pixelation, what you want is to smooth out the pixels which generally involves blur and blur loses detail. Quote iMac 27" 2019 Somona 14.3.1, iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions Link to comment Share on other sites More sharing options...
Samweow Posted July 26, 2020 Author Share Posted July 26, 2020 15 hours ago, firstdefence said: But this isn’t “grain", it’s pixelation, what you want is to smooth out the pixels which generally involves blur and blur loses detail. Is there a way to edit the question title? Quote Link to comment Share on other sites More sharing options...
walt.farrell Posted July 26, 2020 Share Posted July 26, 2020 1 hour ago, Samweow said: Is there a way to edit the question title? If you look at the bottom of the first post, you may see an action named "Edit". If so, click it, then you can change the title. Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. iPad: iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1 Link to comment Share on other sites More sharing options...
firstdefence Posted July 27, 2020 Share Posted July 27, 2020 7 hours ago, Samweow said: Is there a way to edit the question title? Another way is to long hold on the title, so click and hold the mouse button on the title for more than 2-3sec it should then become a text-box. If you hover over the title it will show a tooltip to this effect. Quote iMac 27" 2019 Somona 14.3.1, iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions Link to comment Share on other sites More sharing options...
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