Reply To: Calibration error: Some tie points have negative projection weights

Home Forums AR Sandbox Forum Calibration error: Some tie points have negative projection weights Reply To: Calibration error: Some tie points have negative projection weights

#110844
GrantWells
Participant

Hi Kasper, it’s likely that the error is due to the measured point being below the existing surface plane. Try hitting F2 to recalculate the surface plane after each F1 point capture until it figures out the actual texture surface.

Also if you’re just using the sand surface then make sure it’s reasonably flat and level. Preferable for the first capture is a flat board or card. You may have to alter height manually in (? Sorry can’t remember the the filename) to raise or lower the bed height.

OF bigger concern…. It looks like you’re using a short throw projector so you will need to make sure the Kinect and projector have the same ‘viewpoint’ ie centered above the bed otherwise the image has a very different geometry to the Kinects camera and will never align well.(yes my hard learning to here).

Good luck
Rgds
Grant

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