Patent attributes
An aerial vehicle is outfitted with two or more digital cameras that may be continuously calibrated. The aerial vehicle may include one or more markings provided on portions of a frame, a control surface or another component that are within fields of view of the digital cameras. Based on an initial calibration of the digital cameras, intrinsic and extrinsic parameters of the digital cameras may be determined. Using the intrinsic and extrinsic parameters, locations of the markings may be determined. Subsequently, after the aerial vehicle has engaged in flight operations, images captured of the marking may be used to determine whether the digital cameras remain properly calibrated, and whether images captured using the imaging devices may be relied upon in determining ranges to objects or for any other purpose. A correction factor may be generated based on any differences between projections of the markings within the respective images.
