1. Introduction
Today, in many areas of application, UAV technologies have been used to acquire high spatial and temporal resolution imagery for geo-information extraction of small regions. Characteristics such as low cost, miniaturization, integration of small and medium resolution sensors of position and orientation (GNSS / INS) enabled the UAVs to perform, autonomously, photogrammetric tasks [1], [2]. Autonomous aerial surveying and direct measurement of the position and orientation of the camera at the instant of the images are taken are common work phases in UAV platforms nowadays [3].