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92 lines
3.5 KiB
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[#]: subject: "Create a photo collage from the Linux command line"
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[#]: via: "https://opensource.com/article/21/9/photo-montage-imagemagick"
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[#]: author: "Jim Hall https://opensource.com/users/jim-hall"
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[#]: collector: "lujun9972"
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[#]: translator: " "
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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Create a photo collage from the Linux command line
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======
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Here's how I use ImageMagick to make photo grids for my social media
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posts.
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![Polaroids and palm trees][1]
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ImageMagick is the "Swiss Army knife" of manipulating images on the command line. While you could use a desktop graphics program like GIMP or GLIMPSE to adjust or combine photos and graphics, sometimes it's just easier to use one of the almost dozen tools from ImageMagick.
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For example, I frequently find myself creating image montages to share on social media. Let's say I wanted to share a montage or "image grid" of several screenshots. To do that, I use the ImageMagick `montage` command.
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ImageMagick is a full suite of tools, and the one I use here is the `montage` command. The general syntax of the `montage` command looks like this:
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```
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`montage {input} {actions} {output}`
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```
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In my case, my screenshots are already the same size: 320x240 pixels. To create a montage of six of these images, in a grid that's two screenshots wide by three tall, I can use this command:
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```
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$ montage acronia.png \
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ascii-table.png \
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music.png \
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programming-chess.png \
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petra.png \
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amb.png \
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-tile 2x3 -geometry +1+1 \
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screenshot-montage.png
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```
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This creates an image that's composed of the six screenshots, with a 1-pixel border around each. Doing the math, that's 644 pixels wide and 726 pixels high.
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Note the order of the images: ImageMagick montage arranges the images from left-to-right and top-to-bottom.
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![Screenshot montage][2]
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(Jim Hall, [CC BY-SA 4.0][3])
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In my example, the first row of images shows the open source 2D shooter Acronia and an ASCII programming example, the middle row is an open source music player and a chess programming example, and the third row shows the open source game Post Apocalyptic Petra and the FreeDOS AMB Help reader.
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### Install ImageMagick on Linux
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On Linux, you can install ImageMagick using your package manager. For instance, on Fedora or similar:
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```
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`$ sudo dnf install imagemagick`
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```
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On Debian and similar:
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```
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`$ sudo apt install imagemagick`
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```
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On macOS, use [MacPorts][4] or [Homebrew][5].
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On Windows, use [Chocolatey][6].
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These open source photo libraries help you stay organized while making your pictures look great.
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/21/9/photo-montage-imagemagick
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作者：[Jim Hall][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/jim-hall
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/design_photo_art_polaroids.png?itok=SqPLgWxJ (Polaroids and palm trees)
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[2]: https://opensource.com/sites/default/files/uploads/screenshot-montage_0.png (Screenshot montage)
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[3]: https://creativecommons.org/licenses/by-sa/4.0/
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[4]: https://opensource.com/article/20/11/macports
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[5]: https://opensource.com/article/20/6/homebrew-mac
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[6]: https://opensource.com/article/20/3/chocolatey
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