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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/04/29 14:01:00 UTC
[jira] [Updated] (PDFBOX-4519) Reduce artefacts in shadings
[ https://issues.apache.org/jira/browse/PDFBOX-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr updated PDFBOX-4519:
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Description: Many PDFs with shadings, e.g. the [frog of Kerstin Upmeyer|http://kupmeyer.com/wp-content/uploads/2012/02/K_UPMEYER_SPRING10.pdf] have a few white dots. In the linked GS issue, [Raph Levien|https://en.wikipedia.org/wiki/Raph_Levien] mentions rounding problems with the triangles and suggested to "fatten" them. I do this by drawing an interpolation-colored line and it works nicely. (was: Many PDFs with shadings, e.g. the [frog of Kerstin Upmeyer|http://kupmeyer.com/wp-content/uploads/2012/02/K_UPMEYER_SPRING10.pdf] have a few white dots. In the linked GS issue, Raph Levien mentions rounding problems with the triangles and suggested to "fatten" them. I do this by drawing an interpolation-colored line and it works nicely.)
> Reduce artefacts in shadings
> ----------------------------
>
> Key: PDFBOX-4519
> URL: https://issues.apache.org/jira/browse/PDFBOX-4519
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.15
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: shading, shadingpattern
> Fix For: 2.0.16, 3.0.0 PDFBox
>
>
> Many PDFs with shadings, e.g. the [frog of Kerstin Upmeyer|http://kupmeyer.com/wp-content/uploads/2012/02/K_UPMEYER_SPRING10.pdf] have a few white dots. In the linked GS issue, [Raph Levien|https://en.wikipedia.org/wiki/Raph_Levien] mentions rounding problems with the triangles and suggested to "fatten" them. I do this by drawing an interpolation-colored line and it works nicely.
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