Downsampling with ImageMagick

Found a useful program you'd like to share with others? Commercial announcements are fine, but please keep it brief.
pictus
Posts: 13
Joined: Fri Apr 22, 2011 1:26 pm
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Postby pictus » Tue Jan 10, 2012 7:23 am

Download and install ImageMagick:
http://www.imagemagick.org/script/binary-releases.php#windows
http://www.imagemagick.org/script/binary-releases.php#macosx
http://www.imagemagick.org/script/binary-releases.php#unix

Download and unpack into your DeskTop
http://dl.dropbox.com/u/4686872/Pictus-resize2.zip
or http://www.mediafire.com/file/w47dqrjrzds3ffy/Pictus-resize2.zip
It contains some BAT files
desk.jpg

To resize, just drag and drop any image over one of the icons in the DeskTop

The result is better than the other programs as it is free from moiré and gamma corrected during resize.
PSBIvsIM.gif
The original image http://www.mediafire.com/?49ahiwm5ukfu6c9

More details:
ImageMagick resize http://www.imagemagick.org/Usage/resize/
ImageMagick and USM http://redskiesatnight.com/2005/04/06/sharpening-using-image-magick/
Resize and gamma http://www.4p8.com/eric.brasseur/gamma.html
The BAT files are versions from http://www.openphotographyforums.com/forums/showthread.php?t=14947

ggroess
Posts: 5342
Joined: Wed May 24, 2006 2:15 am
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Postby ggroess » Tue Jan 10, 2012 10:54 pm

Um...wow that is a lot of stuff to absorb....

Do you have any further examples?  I'd like to see the sharpening side as well as the downsize....

Greg

pictus
Posts: 13
Joined: Fri Apr 22, 2011 1:26 pm
Contact:

Postby pictus » Wed Jan 11, 2012 10:06 pm

Only the stuff about gamma and resize http://www.4p8.com/eric.brasseur/gamma.html
I did the final update, I guess now looks OK :)

pictus
Posts: 13
Joined: Fri Apr 22, 2011 1:26 pm
Contact:

Postby pictus » Wed Aug 01, 2012 9:46 pm

New version!
http://dl.dropbox.com/u/4686872/Pictus_resize_D.zip

-4 batch files, 640, 800, 1024 and 1200
-Each file will create 2 versions from 3 algorithms, making 6 for you to choose. :)
-It is from a soft to sharper in gamma 1 and sRGB, all in EWA(Elliptically Weighted Average)
-You can edit the batch files to enable the orthogonal versions or the other algorithms or disable the unneeded...


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