| Summary: | gen_ordered cells in supercell need better dispersion | ||
|---|---|---|---|
| Product: | Ghostscript | Reporter: | Ray Johnston <ray.johnston> |
| Component: | Color | Assignee: | Michael Vrhel <michael.vrhel> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | enhancement | CC: | sphinx.pinastri |
| Priority: | P4 | ||
| Version: | master | ||
| Hardware: | All | ||
| OS: | All | ||
| Customer: | Word Size: | --- | |
| Attachments: | ramp.pdf | ||
This problem still occurs in the current master branch. |
Created attachment 14135 [details] ramp.pdf Using .genordered from PostScript (or gen_ordered standalone), the turn on order of cells in the supercell needs better dispersion, particularly in the very light shades. Seen with: gs -dUseFastColor -r600 -sDEVICE=pbmraw -o x.pbm -c "<< /Frequency 133 \ /Angle 45 /SuperCellSize 36 /Levels 255 >> .genordered \ /Default exch /Halftone defineresource { } settransfer 0.003 setsmoothness" \ -f ramp.pdf Other SuperCellSize values such as 72 also show room for improvement. It is expected that increasing the SuperCellSize (-s) would improve the visual quality of the threshold array.