Anthony Thyssen wrote:
Thomas Kuiper on wrote...
| Hi,
|
| I'm using ImageMagick's "convert" command line tool to generate medium sized
| versions of my photos (jpeg's). My trouble is no matter what settings I try
| I always end up with a slightly blurred version of the original. My goal is
| to reach the same quality as Flickr is doing with its conversion.
|
| To compare:
|
| http://www.inxsoft.net/tmp/dscn4372-flickr.jpg
|
| # convert -quality 100 -geometry 500x375 dscn4372.jpg dscn4372-convert.jpg
| http://www.inxsoft.net/tmp/dscn4372-convert.jpg
|
| The original:
| http://www.inxsoft.net/tmp/dscn4372.jpg
|
| # convert --version
| Version: ImageMagick 6.2.9 08/28/06 Q16 http://www.imagemagick.org
| Copyright: Copyright (C) 1999-2006 ImageMagick Studio LLC
|
| I also tried "resize" and "size" but the result is the same. I'm using the
| latest versions of the anything linked to ImageMagick.
|
| Any help to reach the same quality as Flickr does is highly appreciated.
|
You can reduce the blur aspect of resize operations using the
-filter and/or -support settings.
See IM Examples, Resize filter and support
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/resize/#filter
Hi Anthony,
the "-filter" and "-support" arguments didn't do much diffrence but that
page lead me to "-adaptive-resize" which resulted in a much sharper and less
blurry result, similiar to the one of Flickr.
Thanks for your help,
Thomas
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