On the Output page click on Autocalib.

The autocalibration process has 10 clear steps, click on Next when you get ready.

Step 2: Create a group of projectors

  • Add a Group, you can rename it
  • Select it to highlight the group and click on Next

Step 3: Add Outputs to the group

  • Drag & Drop each output from the right part to the left part which is the Group
  • When it’s done, click on Next

Step 4: Assign the camera

  • On the right side, you should see the camera we prepared
  • Drag & drop the camera from the right side to the left side called “Current Camera
  • Click on Next

Step 5: Adjust the camera position and its aperture

  • This window gives you a middle cross to set the camera position/orientation in the center of the dome
  • You can check again as well if your projectors have enough overlapping area between each other
  • Adjust the aperture on the camera to get the best contrast (not too bright, not too dark)
  • If needed, move the Exposure cursor to be more precise. This parameter needs to remain an additional setting to the aperture setting

  • Adjust the Image crop parameters to fit to the area of interest of the projection surface

Step 6: Adjust the Pattern size that will be used for the calibration

  • Depending of your projection distance and the projection surface dimension, you will need to adjust this parameter
  • Usually, we recommend to move the cursor until you get around 20 points per projector

Step 7: Select your projection surface type, and degree of Deformation

  • In this exercise, we project on a dome so we chose this type here
  • For the Deformation tolerance, we usually start with the default value which is Normal

  • Depending of the result of the first calibration, we could increase the Deformation tolerance to High for a second calibration

Step 8: Define the mask around the projection surface

  • Use the tool + to add points around the surface
  • To achieve a curved surface like our dome, hold down the click and drag the fader in the required direction to create a curved shape

  • Then, you can adjust/move these points thanks to the other tools of the panel

Step 9: Adjust the Binarization threshold to make it indicate in blue what the projector sees

  • Adjusting the Binarization threshold defines what the calibration will consider on the picture for each projector
  • The blue color represents what each projector can project on the dome. Basically, we need to fill in blue what the projector sees.

Step 10: Autocalibration is running

  • In this final step, Modulo Player Remote displays pictures on each projector, one by one
  • The camera records these pictures
  • At the end of this step, a Success pop-up will appear. Click OK

  • All the projectors of your group should now be calibrated

How to adjust the perspective of the calibration deformation?

Once the calibration is done, you might need to warp the entire picture of your group of projectors.

  • To do so, click on Global Warp

  • Go to the Shape tab, and click on ON in order to enable the warping

  • As you use to do with usual warping, you can click on Configuration to add columns and rows if needed

Need more help with this?
Don’t hesitate to contact us here.

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