Kinect to STL sketch for Processing
by johngomm, published
I am not going to hold your hand through setting up Processing and this write up is In Progress, so if you get frustrated, realize that this might not be for you yet. Until I find a way to streamline posting a standalone application that works (currently it doesn't), this is still only for the persistent.
Until Microsoft publishes the code for their KinectFusion project, this is the best I could do to get a directly printable object without messing around in Blender or MeshLab. It's also my first serious coding effort, so forgive any inelegant code. Yes, the STL files are large (15mb) and the detail is hard for the CupCake to print, but it has the outreach potential for people new to 3D printers to create a unique, personalized object by just posing. Before you ask, the STL doesn't seem to take any less time in skeinforge if you use Blender to remove all duplicate vertices first, so I don't bother.
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The Linux-x32 package does not work. Processing states:
requires openkinect driver (libfreenect.dll)
tested on windows XP, x86
tested with libfreenect: "OpenKinect-libfreenect-3b0f416"
libusb-win32 version 188.8.131.52
location: dLibs.freenect.FreenectLibrary.loadLibrary(Unknown Source)
message: Unable to load library : freenect.dll
Not sure why a linux package would require a windows dll, but even after supplying the dll the error remains unchanged.
I was running this on windows7 starter, so there should be a driver for windows at the site I pointed to. I tried making a zip that contained all the files needed to install on another machine, but I couldn't get it working (didn't spend too much time on it though). To be honest, I'm not much of a programmer and the whole thing is quite a kludge. I really wish Microsoft would release the code for KinectFusion so we could all get models from that system.
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I haven't yet exported the processing sketch into a more stand-alone version, so you'll have to deal with running the source code, but that means you can change it and improve it.
This sketch runs inside the Processing environment, which you can download here: processing.org/
Then you'll need the libraries my script is dependent on:
Freenect Library: github.com/diwi/dLibs/archives/dLibs
And also install the OpenKinect drivers to let your computer talk to your Kinect. You'll need to choose the right option for your operating system: openkinect.org/wiki/Main_Page
Once you have it all set up (yes I know it's a bit of a chore, sorry) run the sketch and use "r" and "f" to adjust the red (far) threshold and "g" and "b" to adjust the green (near) threshold. When you are happy, strike a pose and press "s" to output the STL. This can take a while, depending on your computer's speed, but shouldn't take longer than 5 minutes for the highest resolution setting on a netbook and should be way faster on almost anything else.
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