1. A method comprising: displaying on a display a reference image provided by a camera sensor; displaying on the display a start position within the reference image; displaying on the display an end position within the reference image; using a processor to determine a trajectory, within the reference image, between the start position within the reference image and the end position within the reference image and to define a target image for each of a plurality of waypoints along the determined trajectory; mapping each target image to a respective portion of the camera sensor; and capturing each target image with the respective portion of the camera sensor.