mikefulb Posted February 5, 2021 Share Posted February 5, 2021 I've been playing with the new 1.9 release with some astroimaging data I have and it is pretty cool stuff - great job! I am intrigued by the "Remove Background" filter. I have other astroimaging software which handles fairly complex light gradients but having a tool I can show new imagers how to use in Affinity is an attractive idea. I watched the OSC stacking video and around 11:30 in the filter is discussed some so I got an idea of what it does. It seems to mainly be for neutralizing the background color. But it was mentioned it can remove gradients as well. I made a simple linear gradient pixel layer and tried it out and it worked well. When I tried it with real world data I couldn't quite get it to do what I expected. I attached a version of the file I was working on. Any additional tips on using this tool for gradient removal would be greatly appreciated. Michael lightgradient.afphoto Quote Link to comment Share on other sites More sharing options...
Staff Dan C Posted February 18, 2021 Staff Share Posted February 18, 2021 Hi @mikefulb, Apologies for the delayed response here and welcome to the Affinity forums I can confirm that James, our resident Photo expert has since created a new tutorial, specifically designed to target this. I have linked this below - https://affinity.serif.com/tutorials/photo/desktop/video/512549746/ Please do let me know if this helps! Quote Please note - I am currently out of the office for a short while whilst recovering from surgery (nothing serious!), therefore will not be available on the Forums during this time. Should you require a response from the team in a thread I have previously replied in - please Create a New Thread and our team will be sure to reply as soon as possible. Many thanks! Link to comment Share on other sites More sharing options...
mikefulb Posted February 18, 2021 Author Share Posted February 18, 2021 Thank you that video had some good tips. I wasn't able to find a good mix of sample points for my example file above, however, that adequately removed the gradient. I suspect the type of gradient present might require a more sophisticated approach to remove. Dan C 1 Quote Link to comment Share on other sites More sharing options...
brandx Posted March 16, 2021 Share Posted March 16, 2021 I too love the idea of the Astrophotography Remove Background filter but I am finding it struggles with some more complex gradients I experience at my location. Further tips in addition to James' tutorials would be great. Quote Link to comment Share on other sites More sharing options...
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