Command line batch image cropping tool

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.

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