This can be improved by going to Calibration on your app and ensuring that the camera is positioned well to see the screen properly, and that the corners of the Lightstrip are accurately calibrated. You can also try to use the presets provided or adjust your camera parameters to custom settings.
When recalibrating, keep these tips and tricks in mind:
- Close curtains or turn off ambient lighting before calibration
- If camera is mounted on top, tilt to a lower angle so that it can see the whole screen
- Turn on your TV while calibrating so that the screen contrasts against the frame and the corners are easier to locate
- Move all the calibration points slightly closer together, further away from the edge of the screen to reduce the room for error
Video tutorial for 4D Setup Tips & Tricks