7.3.7 Using staged ROI’s and ROI Sequences
An ROI (region of interest) is a spot, to which the onboard camera keeps pointing while the aircraft is flying. ROI’s are a feature of ArduPilot, which is using the Gimbal (and the vertical Axis of the vehicle in case of copters) to control the camera view direction in all axis (ArduPlane requires a three axis gimbal to accomplish the same).