How to easily paint with Infra red light.

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Painting in projection is something people regularly ask about. We have put together a quick and dirty tutorial on how to get started.

You need,

• IR Leds, we used www.led1.de/shop/lng/en/led-light-bars-strips/special-lighting/solarox-led-strip-50cm-infrared-940nm.html?language=en
  
• Camera, we used www.lcdracks.com/servers-cameras/HD-SDI-cameras/CV502-MB.php
  
• IR Filter  we used midopt.com/filters/bp850/
  
• Hippotizier
  
• Projector

Setup the room

We setup a hippotizer and a projector aimed at a wall. The image is roughly 3m wide.
We setup the Camera with the IR filter and focused it on the wall hitting the same area as the projector.

Bring up the live camera on Layer 1.

  

To clean up the image a little we made some colour changes, mainly we boosted the contrast to full and desaturated the clip to full black and white.

 

On Layer 2 we set the layer source to relay the mix 1 master to generate a feedback and used the lumakey mix mode at 50% to paint or set it to 0 to clean the output.






Once you have got this setup, you can use it in combination with other effects or as a source for tracking in Notch.