To perform this step you need the "Structure Calibrator" App. This app should be already installed on your iPad. If not, you can install it from App Store by searching “Structure Calibrator”.
Calibrate the 3D Sensor
- Launch the "Structure Calibrator" app
- When prompted, connect your sensor to your iPad.
- Select “Start Standard Calibration” and confirm the used bracket if needed.
- Carefully follow the instructions in the app and read the in-app tutorial first
- Choose a room with a lot of different objects and structures. There must be a lot of contrast on both the IR stream as well as the colour stream.
- You will be taken to a screen that says “Sunlight Required”. Fill up the sun meter by pointing the sensor outside or through an open window. If there is not enough IR available, you can toggle the Indoor Mode.
- You now see a split screen of colour and IR. This is where bracket calibration occurs. Your goal here is to find a complex scene that is high enough in contrast that it appears well in both screens.
- You don’t need to move a huge amount between frames, just move a little! This way you don’t have to continually find complex enough scenes. Check also the coloured quality indicator.
After two or three good frames, the app will switch to the next stage.
- Refinement is the last part of calibration, where you manually tweak the calibration the software determined was correct. We do this by allowing you to drag the depth feed’s colour overlay to match the physical scene.
- Find a scene with some very clearly-defined edges
- Once the color (not the spaces where there is no color!) matches the physical scene, tap “Save Calibration”.
- The calibration state will save to the sensor.
- The calibration is done. Congratulations!
You can now close the app.