Crop image to biggest centred part with a ratio [closed]

问题

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Closed 6 years ago.

I would like to crop image to a radio, 4:3 for instance.

But I would like the biggest centred part, for instance :

to

to

I didn't find my situation in the imagemagick documentation.

(Imgur sizes are quite inacurate but you should get the idea)

回答1:

Finally I wrote a little script for me: reduce-ration (it requires ruby with the fastimage gem: gem install fastimage)

In my example: reduce-maxi 4x3 center shutup.png templerun.jpg

You can use it like: reduce-maxi RATIO DIRECTION IMAGES.... See the gist for more details.

I also wrote a script to get the ratio of the images. See the gist.

来源：https://stackoverflow.com/questions/14916635/crop-image-to-biggest-centred-part-with-a-ratio