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A set of techniques and samples for 3D mapping (incomplete)
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1. Projector node.v4p
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Readme.md
mapping.xml

Readme.md

Introduction

Methods and tutorials for projection mapping 3D objects where a physical mesh of the object is available. In the tutorials we use ReconstructMe to create a mesh using a kinect to 3D scan a scene (http://reconstructme.net).

Methods

CalibrateProjector

Using OpenCV's CalibrateCamera method to find the intrinsics and extrinsics of the projector (i.e. the projection and view matrices respectively).

Inputs

  • 7 or more World to Projection correspondences

Prerequisites

Homography + Position

Homography and an arbitrary perspective are used to define the Projection matrix and the rotation element of the View matrix. This leaves 1 unknown (projector position) which can then be rapidly tweaked into position by the user

Inputs

  • 4 World to Projection correspondences
  • 3D position of projector (easy to tweak when 4 correspondences are locked)

Prerequisites

  • vvvv24.1
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