» Calibrate and Re-Project
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Calibrate and Re-Project

tool workshop projection-mapping projection projector calibration tutorial
Credits: joreg, robotanton, emarao

about

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:

  • Step01_CalibrateProjector.v4p
  • Step02_ReProjectionSetup.v4p
Projector Calibration
  1. Place your projector anywhere and point it to a physical object (your "screen") you want to project on to.
  2. Measure several physical points on your "screen" and type their positions into the patch.
  3. Match the points in the projection to the measured points with a few simple clicks.
  4. Hit 'Solve' to get the View/Projection matrices needed for the Renderer.
Re-Projection
  1. Create a 3d Content and render it from the spectator's point of view.
  2. Project. For more about this projection mapping technique, see: Projection Mapping Primer.
Requirements
Known issues

ATI cards
There is a known problem with the ImagePack and Radeon graphic cards.
The solution was proposed by tekcor:

  1. Download "nvcuda.dll": http://www.symbioticcube.com/Downloads/nvcuda.dll
  2. 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

download

vvvv_Calibrate-And-Re-Project_v1_0.zip - 22.02.17 [21:06 UTC] by robotanton | 92 downloads
notes: Initial Release

anonymous user login

Shoutbox

~3h ago

mediadog: And then come to the opening of Paradise that evening: http://bit.ly/2naJNcz

~3h ago

mediadog: In central NY Friday? Doing demo and panel talk "Making VR in VR with vvvv" as Sundance Ignite at SU: http://bit.ly/2mY56Ns

~2d ago

dominikKoller: Christina Engelbart and Bret Victor made a video digest of the Mother of All Demons http://www.dougengelbart.org/firsts/1968-demo-interactive.html

~2d ago

tekcor: what a sweet thread... and no one replied.. wonder if the two best vvvv friends are still with us? https://discourse.vvvv.org/t/personality-through-a-node-happy-birthday-aurel/11330

~2d ago

tekcor: @skyliner: district9 ship cg node graph, nice find!

~3d ago

microdee: now VPDB supports filters from URL hash notation, like https://vvvvpm.github.io/#dx11-vvvv/latest enjoy! ;)

~3d ago

bjoern: Does anyone have the material from the Openscad workshop: http://node15.vvvv.org/program/workshop/3d-printing-vvvv-and-openscad @elektromeier ?