Went from low PPI to high and now there appear white pixel - Printable Version +- Gimp-Forum.net (https://www.gimp-forum.net) +-- Forum: GIMP (https://www.gimp-forum.net/Forum-GIMP) +--- Forum: General questions (https://www.gimp-forum.net/Forum-General-questions) +--- Thread: Went from low PPI to high and now there appear white pixel (/Thread-Went-from-low-PPI-to-high-and-now-there-appear-white-pixel)

Went from low PPI to high and now there appear white pixel - Delfin93 - 10-22-2018 Hello there! I imported a picture from a 70 PPI document into a 150 PPI one and made it bigger. Then i wanted to fill out some space with orange colour but I get this result witht white pixels at the borders. Is there a way to solve this or do I have to redo the borders? Thanks! RE: Went from low PPI to high and now there appear white pixel - Ofnuts - 10-22-2018 I assume you used the fuzzy select? It won't select the edge of things because they are a blend of the colors of the subject and the background. And if you increase the threshold the edges gets pixellated. To keep the smooth edges: Make sure you have an alpha channel: Layer>Transparency>Add alpha channel Make the background transparent: Fuzzy select the background (standard threshold) Select>Grow by two pixels, so that the selection covers the edge pixels Color>Color to alpha and remove the background color. The edge pixels will become partially transparent. Set the bucket-fill tool to Behind mode (this is the selector at the top of the Tool options), and bucket-fill the selection with the new color. The partially-transparent pixels will be partially painted, becoming a blend of the subject color and the new background color. RE: Went from low PPI to high and now there appear white pixel - Delfin93 - 10-23-2018 Thanks for your help, it worked so far but somehow i have there completely transparent corners now? RE: Went from low PPI to high and now there appear white pixel - Ofnuts - 10-23-2018 Did you redo the selection in between? In practice given the colors you can bucket-fill the whole layer in Behind mode, this should fill all the holes.