问题
is there any lightweight command line batch image cropping tool(Linux or Windows) which can handle a variety of the formats ?
回答1:
Imagemagick is what you want -- tried and true.
回答2:
In Linux you can use
mogrify -crop {Width}x{Height}+{X}+{Y} +repage image.png
for CLI image manipulation
回答3:
Imagemagick's convert does the trick for me (and much more than cropping):
convert -crop +100+10 in.jpg out.jpg
crops 100 pixels off the left border, 10 pixels from the top.
convert -crop -100+0 in.jpg out.jpg
crops 100 pixels off the right, and so on. The Imagemagick website knows more:
http://www.imagemagick.org/Usage/crop/#crop
回答4:
I found nconvert pretty handy so far.
回答5:
for f in final/**/*;
do
convert -crop 950x654+0+660 "$f" "${f%.jpg}".jpg
done
This script loops through all the sub-folders and crops the .jpg files.
回答6:
I have scanned some pages and all ~130 pages needs the lower ~1/8 of the page cut off.
Using mogrify didn't work for me,
a@a-NC210-NC110:/media/a/LG/AC/Learn/Math/Calculus/Workshop/clockwise/aa$ mogrify -quality 100 -crop 2592×1850+0+0 *.jpg
mogrify.im6: invalid argument for option `2592×1850+0+0': -crop @ error/mogrify.c/MogrifyImageCommand/4232.
However convert did:
a@a-NC210-NC110:~/Pictures/aa$ convert '*.jpg[2596x1825+0+0]' letter%01d.jpg
a@a-NC210-NC110:~/Pictures/aa$
I learnt this here under the Inline Image Crop section.
Notice my syntax: I had to put my geometry in brackets: [].
Using the successful syntax above but with mogrify simply didn't work, producing:
a@a-NC210-NC110:~/Pictures/aa$ mogrify '*.jpg[2596x1825+0+0]' letter%01d.jpg
mogrify.im6: unable to open image `letter%01d.jpg': No such file or directory @ error/blob.c/OpenBlob/2638.
Linux a-NC210-NC110 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:12 UTC 2014 i686 i686 i686 GNU/Linux
Lubuntu 14.04 LTS
来源：https://stackoverflow.com/questions/1893244/command-line-batch-image-cropping-tool