paintball-paintings

Please check the online version of this repo, available here: https://github.com/vvzen/paintball-portraits

The installation works by getting the live feed from a PS3 eye camera, waiting for the user input, then processing the PS3 cam image by using the coherent line drawing algorithm, sampling the resulting black & white image with some dots and then streaming the coordinates of each point to the cnc machine via serial communication.

Below you can find an example of the sampling process applied to the processed image:

The serial communication is bundled inside the osc protocol for readability reasons: using raw byte buffers has definitely less overhead but there is no need for it in my case.

Everytime the of app sends a serial message to the arduino, it waits for the arduino to send back the same message as a response and then procedes with the next message, until each dot has been shot on the canvas.

The path of the gun is optimised using a nearest neighbour algorithm, which definitely outperforms any kind of genetic algorithm approach that I tested. (have a look here)

ARDUINO

Open the arduino sketch and upload it to the arduino. Check the required libraries by looking at the top of the arduino sketch.

OPENFRAMEWORKS

The openframeworks app requires several different addons:

ofxOpenCv
ofxPoco
ofxGui
ofxKinect (required for the libusb driver)
ofxIO
ofxSerial
ofxCv
ofxPS3EyeGrabber
ofxFaceTracker

Installing the addons

You can either run the setup.py using python3 (see below) or manually download each addon and put it in your openframeworks addons folder.

Using setup.py

The setup.py file will automagically download all the required addons that you don't have installed into your openframeworks addons folder.

Open the setup.py with a text editor and set the OF_ROOT variable to your openframeworks installation folder. In my case, it is /Volumes/LaCie3TBYas/Code/c++/of_v0.10.0_osx_release so I will change it like this: OF_ROOT="/Volumes/LaCie3TBYas/Code/c++/of_v0.10.0_osx_release"
open a terminal window and cd into the main folder of this repo (maca-final)
run python3 setup.py