2
votes
1answer
46 views

Make a grid of images, then rotate and crop it

So I have a few thousand thumbnails that I want to stitch together in a slightly tilted grid. I figure that's not going to be the most obvious thing in the world to understand so here's an artists ...
0
votes
1answer
42 views

Which package should I choose for the convert command?

Typing convert on my system (14.04) produces: The program 'convert' can be found in the following packages: * imagemagick * graphicsmagick-imagemagick-compat Why are there 2 packages providing ...
0
votes
1answer
84 views

How can I resize 300 image at the same time? [duplicate]

I have a folder, which include ~300 images. I want to resize it to 800px wide in another folder. How can I do that? I have tried some ImageMagick command.
5
votes
1answer
5k views

How to crop borders/white spaces from image? [duplicate]

I have a lot of images which have white borders around it. I would like to crop those borders in one batch, preferably from command line. I believe that it can be done with ImageMagick, but I couldn't ...
1
vote
1answer
47 views

How can I correct for a slow scanning document feeder?

We've got a HP all-in-one OfficeJet and I find that the document feeder on it is a bit slow, so all the scans come out a bit stretched. Everything we feed into this is A4 which should have an aspect ...
8
votes
2answers
5k views

Resize images to specific height value in ImageMagick?

I've looked around for this, and can't find an easily implemented solution. Currently I'm working on an application that deals with panoramas. As they come out of the batch stitch process, the ...
1
vote
1answer
435 views

tool to scan similar images

What tools might be available in Ubuntu to scan many image files and detect similar ones despite different sizes, formats, etc? Support for batch mode/cli would be especially good. For example, so I ...
8
votes
5answers
3k views

How can I convert a folder of .pngs to .jpgs while setting the background color?

I have a folder of png files that have transparent backgrounds. I would like to convert them from the command line and maintain the images' transparent backgrounds. I'd appreciate any help. Since ...