Last modified: 2006-09-25 21:57:48 UTC

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Bug 7383 - Sharpening of image thumbnails
Sharpening of image thumbnails
Status: RESOLVED DUPLICATE of bug 6193
Product: MediaWiki
Classification: Unclassified
File management (Other open bugs)
unspecified
All All
: Normal enhancement with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
http://static.flickr.com/95/224894467...
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2006-09-22 10:19 UTC by ejsanders
Modified: 2006-09-25 21:57 UTC (History)
0 users

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description ejsanders 2006-09-22 10:19:13 UTC
Compare
http://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Champions_League_trophy.jpg/375px-Champions_League_trophy.jpg
with
http://static.flickr.com/95/224894467_8f0e771cce.jpg

Adding a small amount of sharpening when downscaling photos (this would probably
be limited to jpegs) is a fairly standard practice. Are the processor costs
high? I can't imagine it adds much to the time it takes to resize. I also
imagine such tools are available in our image library (ImageMagick?).
Comment 1 Phil Boswell 2006-09-22 10:26:58 UTC
This might be a daft question, but why not simply upload the much sharper image in the first 
place? Is it really necessary to upload huge images which are never going to be used at full 
resolution?

One thought does occur: are those high-resolution versions in preparation for hard-copy 
publication?
Comment 2 Aryeh Gregor (not reading bugmail, please e-mail directly) 2006-09-22 18:43:18 UTC
Or for anything else that might come up.  Shrinking images destroys information.
 If you keep a large copy somewhere handy, and you need a small copy for
something, you can shrink it; if you only have the small copy and you need a
large copy, you're screwed.
Comment 3 Brion Vibber 2006-09-25 21:57:48 UTC
Duping to 6193; maybe reopen that and add some comments.
I vaguely recall this being raised even earlier but can't find it at the moment.

*** This bug has been marked as a duplicate of 6193 ***

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