Difference between revisions of "Imagemagick Batch Processing"
From Tomelec
(Created page with "[http://www.imagemagick.org Imagemagick] provides powerful tools for image manipulation. These can be easily automated in small shell scripts or command lines. =Shellscript batc...") |
(→Shellscript batch processing) |
||
| Line 4: | Line 4: | ||
==Scale a bunch of photos== | ==Scale a bunch of photos== | ||
| − | This scales all .JPG files in the directory ../mypics to 2048x1536 pixels. Note that the file extension (.JPG) is case sensitive and will not match .jpg files. | + | This scales all .JPG files in the directory ../mypics to 2048x1536 pixels. Note that the file extension (.JPG) is case sensitive and will not match .jpg files. The aspect ratio is preserved. |
| − | <nowiki>for file in ../mypics/*.JPG; do echo $file; convert "$file" -scale 2048x1536 -quality 85 `basename "$file"`; done | + | <nowiki>for file in ../mypics/*.JPG; do echo $file; convert "$file" -scale 2048x1536 -quality 85 `basename "$file"`; done</nowiki> |
| − | < | + | |
| + | |||
| + | ==Crop out a section of PNG files== | ||
| + | This cuts out the upper left 6x17 pixels. '''+0+0''' adjusts the offset | ||
| + | <nowiki>for file in ../my_pngs/*.png; do echo $file; convert $file -crop 6x17+0+0! -depth 8 `basename $file`; done | ||
Revision as of 10:32, 2 September 2013
Imagemagick provides powerful tools for image manipulation. These can be easily automated in small shell scripts or command lines.
Shellscript batch processing
Scale a bunch of photos
This scales all .JPG files in the directory ../mypics to 2048x1536 pixels. Note that the file extension (.JPG) is case sensitive and will not match .jpg files. The aspect ratio is preserved.
for file in ../mypics/*.JPG; do echo $file; convert "$file" -scale 2048x1536 -quality 85 `basename "$file"`; done
Crop out a section of PNG files
This cuts out the upper left 6x17 pixels. +0+0 adjusts the offset
<nowiki>for file in ../my_pngs/*.png; do echo $file; convert $file -crop 6x17+0+0! -depth 8 `basename $file`; done
