nodejs make image from smaller images?

Question

I have some small images that tiled together make a fullsize image. The tiles are saved on the server. I would like to stitch the tiles together in the right position and create 1 image file on disk made up of all the tile files. How can I do this in nodejs?

Thanks

score 3 · Answer 1 · answered Feb 07 '12 at 21:26

3

Your best bet is probably to invoke a tool like ImageMagick, which has a montage command that does exactly what you're looking for.

This would be fairly straightforward to implement yourself, but I see that this fork of node-imagemagick has montage support.

answered Feb 07 '12 at 21:26

Jordan Running

102,619
17
182
182

nice; I can't believe that's been around since November; node is sure screaming along on libs! – Kato Feb 07 '12 at 21:52
I see, that looks like good way. I am trying to use the forked version of image magick that has the montage feature but I am not sure how to get a forked version of npm module install. Any hints? – zumzum Feb 07 '12 at 22:45
You should be able to add it as a dependency in your `package.json` with the GitHub tarball URL, e.g. `"dependencies" : { "imagemagick" : "https://github.com/enobrev/node-imagemagick/tarball/master" }`. See `npm help json` ([also here](http://npmjs.org/doc/json.html#dependencies)) for more information. – Jordan Running Feb 07 '12 at 23:20
I tried to do what it's shown here but no luck yet.....http://debuggable.com/posts/how-to-fork-patch-npm-modules:4e2eb9f3-e584-44be-b1a9-3db7cbdd56cb But I guess this is another question. – zumzum Feb 08 '12 at 00:00

score 0 · Answer 2 · edited May 23 '17 at 12:20

~~Since node.js doesn't have a graphics editing suite, your best path would be to~~

You could call an external script, using java, using php, or the language you feel most comfortable hacking with.

There's plenty of material on how to run a script from node.js, so I won't mess around with that here.

However, I would suggest that you pass a temporary filename as an argument to the script, then when it finishes executing, go get that file rather than trying to read back the binary as a return value or something equally convoluted.

nodejs make image from smaller images?

2 Answers2