Calibrating projectors using Iris

To start calibrating projectors using Iris, open the Iris window, that you can find in Tools -> Iris.

On the right hand side, first select the cameras and the projectors you’d like to use for the calibration process.

Now let’s go through the settings on the right:

  • IrisVirtual enables a feature further explained in chapter IrisVirtual. For calibrating real projectors, this checkbox should be unchecked.

  • Include Iris camera points will try to include the points you have selected in 3D Cal window of the Iris camera in the Projector calibration. In 99% of the cases, you should leave this checkbox checked.

  • Show advanced checkbox exposes some additional settings. In most cases, you won't need to adjust any of those.

  • Export calibration images: if this checkbox is checked every camera image taken throughout the calibration process will get saved into ProgramData\Lightact\Lightact4\iris. You should leave this checked, because if you have problems with your calibration and reach out to us for support, these images is the first thing we will ask for.

  • Adjust projection points can improve your calibration by adjusting the projected points to a more accurate position, lowering the reprojection error. The fix delta [px] property indicates the range in which the points will be adjusted in.

  • Show in Explorer button opens Windows Explorer in the abovementioned directory Calibrate button initiates the calibration process.

As you probably figured out by now, you can start the calibration process by clicking on the Calibrate button.

After the calibration process is complete, all the selected projectors will get calibrated and in their 3DCal windows, there will be a larger number of calibration points:

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