Open
Bug 1547612
Opened 6 years ago
Updated 2 years ago
Use Lanczos method for upscaling images for different zoom levels
Categories
(Core :: Graphics: ImageLib, enhancement, P3)
Core
Graphics: ImageLib
Tracking
()
NEW
People
(Reporter: aros, Unassigned)
References
Details
(Keywords: feature)
Attachments
(1 file)
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113.47 KB,
image/png
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Details |
firefox_vs_lanczos.png
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0
Steps to reproduce:
Currently Firefox uses bicubic (?) for image upscaling and this algo is not optimal specially for text.
Expected results:
See the attached screenshot:
Firefox 67 beta 14 vs. Lanczos.
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Reporter | |
Updated•6 years ago
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Type: defect → enhancement
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Updated•6 years ago
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Severity: normal → major
Status: UNCONFIRMED → NEW
Component: Untriaged → ImageLib
Ever confirmed: true
Keywords: feature
OS: Unspecified → All
Product: Firefox → Core
Hardware: Unspecified → All
See Also: → 486918
Summary: Use lanczos for upscaling images for different zoom levels → Use Lanczos method for upscaling images for different zoom levels
Version: 67 Branch → unspecified
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Updated•6 years ago
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Priority: -- → P3
This can be done at high performance using shaders. For example, madvr renderer can upscale hundreds of frames per second using lanczos on modern discrete video cards.
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Comment 2•3 years ago
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In the process of migrating remaining bugs to the new severity system, the severity for this bug cannot be automatically determined. Please retriage this bug using the new severity system.
Severity: major → --
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Updated•3 years ago
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Severity: -- → S3
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Description
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