Bug 475609 - Mitchell scale up image cause artifact on image
Summary: Mitchell scale up image cause artifact on image
Status: REPORTED
Alias: None
Product: krita
Classification: Applications
Component: Resize/Scale Image/Layer (show other bugs)
Version: 5.2.0
Platform: Other Other
: NOR normal
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-14 14:27 UTC by firecloud888
Modified: 2023-10-14 14:39 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
OBSERVED RESULT(with tiling artifact) (57.92 KB, image/png)
2023-10-14 14:27 UTC, firecloud888 		Details
Expect mitchell scale (80.56 KB, image/png)
2023-10-14 14:28 UTC, firecloud888 		Details
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Description firecloud888 2023-10-14 14:27:31 UTC 
Created attachment 162294 [details]
OBSERVED RESULT(with tiling artifact)

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
Seems like this is a regression bug : https://bugs.kde.org/show_bug.cgi?id=151408
Check other users on forum test this bug: https://krita-artists.org/t/seems-krita-has-a-wrong-mitchell-scale-algorithm-implementation/76008

STEPS TO REPRODUCE
1. Add a image into krita layer
2. Scale up image using mitchell

OBSERVED RESULT
Tiling artifact on image

EXPECTED RESULT
Smooth image

SOFTWARE/OS VERSIONS
Windows: Windows 10, Krita 5.2
Comment 1 firecloud888 2023-10-14 14:28:09 UTC 
Created attachment 162296 [details]
Expect mitchell scale