•Calibrate projected textures on 3D objects with the help of Calibration Markers
•Add Calibration Markers on Surface level
•Compensate lens distortion by warping with geometry modifiers
Workflow
1.Add a 3D object to your project & add it to your Playback Provider - in this example we've added a UV-Pattern to the geometry as well.
2.Go to Render Editor in Canvas Mode & Switch To 3D via Render Editor context menu.
3.Disable Canvas Outline in Canvas Inspector. (optional)
4.Inspect the Surface connected to your projector output and go to VIEWPOINT tab > Calibration Settings. Disable Live Calibration Update for now.
5.Go to the > Calibration Markers section and click "Add" to add Markers.
6.In the Render Editor switch EDIT SELECTION to Markers.
7.Select the Calibration Markers in Render Editor and position them onto your object's corners with CTRL-Click, one by one; markers will snap to the next vertex of your object.
A minimum of 6 non coplanar points is required, i.e. 6 markers with different levels of depth or distances.
8.Switch your Render Editor to Systems Output View to align the Calibration Markers from the 2D projection space with the real world projection.
9.For better visibility of your markers, reduce the clip's opacity. Calibration Markers can be fine-tuned with pixel accuracy using your arrow keys.
10. Check your level of accuracy with the help of Reprojection Precision property (found under Viewpoint > Calibration Settings)
Tips for use of projectors with wide-angle lenses
lens distortion may occur and can be compensated with with the help of Geometry Modifiers. Add an FFD from the library using VERTEX'S warping workflow.