Track a board with multiple LEDs

Prepare the equipment

• Take the size of the board you use, in our case, it is 1 × 0,73 meters
• Determine the ratio. In our example, it is 1,37
• Place 4 LEDs on the board, and take measure of each LED

*In our case, we decided that the center of the board is at the reference value 0,0

Prepare Modulo Kinetic

• Create a Render Surface with the same ratio as the object dimension
  In our example, we chose 1000×730 pixels

• In the Media tab, click on + to add a pattern media with the same resolution

• Create a Material and drag&drop the Render Surface onto the DIFFUSE channel
• Then click on the Emissive case to enable it

• Create on the 3D Scenes a Plane with the same size as the board: 1 × 0,73 meters. Then, define its Material

Prepare the calibration

• Go to the KineMotion window
• Pause the Tracking
• Select the Tracking group

• On the Editor window, go to the Objects tab
• Click on + to add a Rigid Body
• Select the Rigid Body we created

• Drag & drop the Node_Plan onto the 3D Scene node

• Add as many Points as we have LEDs standing on our Board

• Play the tracking and look at the cameras visualization to determine the IDs of each LED

• Stop the tracking
• Indicate these IDs on each Point created on the Rigid Body, and indicate the measures positions we took at the beginning

• Play the tracking and move physically the board. The projection should follow the board surface

• You can check the LEDs position in the 3D by going to the Listing tab