Issue 86312 - Low quality antialiasing of bitmap images
Summary: Low quality antialiasing of bitmap images
Status: CONFIRMED
Alias: None
Product: Impress
Classification: Application
Component: viewing (show other issues)
Version: OOo 2.3
Hardware: All All
: P3 Trivial (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
URL:
Keywords: needmoreinfo
Depends on:
Blocks:
 
Reported: 2008-02-21 15:15 UTC by gcc111
Modified: 2017-05-20 10:55 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Attachments
Presentation with embedded screenshots showing poor scaling (377.75 KB, application/vnd.oasis.opendocument.presentation)
2008-02-21 15:16 UTC, gcc111 		no flags Details
Screenshot of viewing the presentation, showing the poor scaling. (196.49 KB, image/png)
2008-02-21 15:17 UTC, gcc111 		no flags Details
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Description gcc111 2008-02-21 15:15:52 UTC 
Antialiasing is done on bitmap images in a presentation, but not at very high
quality, which results in poor display on screen.

See attached presentation and screenshot for example. The embedded screenshots
in the presentation are almost unreadable. Gimp could have resized them much
more clearly.
Comment 1 gcc111 2008-02-21 15:16:49 UTC 
Created attachment 51629 [details]
Presentation with embedded screenshots showing poor scaling
Comment 2 gcc111 2008-02-21 15:17:31 UTC 
Created attachment 51630 [details]
Screenshot of viewing the presentation, showing the poor scaling.
Comment 3 christian.guenther 2008-02-26 11:55:11 UTC 
Please give me a step by step description what I have to do to reproduce the bug.
Comment 4 gcc111 2008-02-26 21:10:24 UTC 
Just open the presentation and press F5. Before viewing with F5, in editing
mode, the quality is worse, but I can live with that. In viewing mode (after F5)
I'd expect the bitmap to be rendered with high-quality anti-aliasing, but as the
screenshot shows, the text in the bitmaps is basically unreadable.
Comment 5 christian.guenther 2008-02-29 14:38:25 UTC 
Set to new and change the target
Comment 6 christian.guenther 2008-02-29 14:46:21 UTC 
The text looks blurred in the running presentation and is bad readable.
In PPT the antialiasing is better but the text is also hard to read because of
the size of the text.
Please have a look if you could improve the antialiasing.
Comment 7 jackiesun 2009-01-14 06:34:56 UTC 
In editing mode, the GDI+ is used to draw which has the antialiasing 
parameter. But in viewing mode, the GDI is used which has not the parameter. 
So, the result is more poor. What we should do is to using GDI+ function to 
draw a bitmap in viewing mode.
Comment 8 jackiesun 2009-01-14 06:36:22 UTC 
In editing mode, the GDI+ is used to draw which has the antialiasing 
parameter. But in viewing mode, the GDI is used which has not the parameter. 
So, the result is more poor. What we should do is to using GDI+ function to 
draw a bitmap in viewing mode.
Comment 9 jackiesun 2009-01-14 06:37:31 UTC 
In editing mode, the GDI+ is used to draw which has the antialiasing 
parameter. But in viewing mode, the GDI is used which has not the parameter. 
So, the result is more poor. What we should do is to using GDI+ function to 
draw a bitmap in viewing mode.
Comment 10 jackiesun 2009-01-14 06:38:09 UTC 
In editing mode, the GDI+ is used to draw which has the antialiasing 
parameter. But in viewing mode, the GDI is used which has not the parameter. 
So, the result is more poor. What we should do is to using GDI+ function to 
draw a bitmap in viewing mode.
Comment 11 aoo-bugger 2009-06-08 22:31:20 UTC 
Hello, are there any news on this topic?
I recently had the same problem, the worse part was that I didn't know about the
not-anti aliasing of OOo and when I previewed the slides on my desktop
everything looked fine as there was still a high resolution, but on the beamer
and during the presentation it was horrible.
so after complainants from my audience, I know switched to powerpoint again :-/
so I'm really looking forward to see this topic as closed (as solved ;).
Comment 12 Marcus 2017-05-20 10:55:34 UTC 
Reset assigne to the default "issues@openoffice.apache.org".