Calibrate and Re-Project
|Date:||22 Feb, 2017|
joreg, robotanton, emarao
Semi-automatically calibrate your projector and throw generated content on to your physical object. These are convenience patches providing a simple workflow for using the projector-calibration that is coming with the ImagePack.
It was presented at Mapping Festival, Gray Area Festival and CGEvent in 2016.
Two Patches are explaining the techniques and show how to use the modules:
- Place your projector anywhere and point it to a physical object (your "screen") you want to project on to.
- Measure several physical points on your "screen" and type their positions into the patch.
- Match the points in the projection to the measured points with a few simple clicks.
- Hit 'Solve' to get the View/Projection matrices needed for the Renderer.
- Create a 3d Content and render it from the spectator's point of view.
- Project. For more about this projection mapping technique, see: Projection Mapping Primer.
- vvvv Alpha from 35.3 onward.
- ImagePack is used by the projection calibration module.
ATI cards There is a known problem with the ImagePack and Radeon graphic cards. The solution was proposed by tekcor:
- Download "nvcuda.dll": http://www.symbioticcube.com/Downloads/nvcuda.dll
- Place it in your ImagePack's nodes/plugins/dependencies/opencv/x86/ folder. At the moment only 32bit version of the pack is working on my ATI machine.
Foldable model by Emarao based on A4 dimensions
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Hi, from Wisp Festival in Leipzig, wanted to use a photogrammetrie of the room to calibrate 9 Video projectors. I have two problems,
I've just tried clean install of beta37 x86, DX11 pack, Image pack. When I click Solve, the node turns red. Then, when I copy the nvcuda.dll into the Image pack folder (see the detailed description above) and restart vvvv, everything works. Unfortunately the link to the .dll from the @teckor site doesn't work anymore.
This is how the problem solves on my machine.
Hope this helps a bit.
Thanks Anton, It was due to the Version of 4V and the Cuda dll. Do you know if there is a way to do in DX11 what is done in Step02_ReProjectionSetup by ProjectToScreen shader which calculate the projection on the Mesh surface...?
what about ConstantProjection (DX11.Effect)