A method of determining the absolute geographic direction of an object of a scene, with a predetermined desired performance in azimuth and an elevation of the class from 0.1 to 1 milli-radian, the method comprising a learning phase and an online operation phase, the learning phase comprising the following steps: - acquisition by circular scanning by means of a channel of a first optronic imaging device in the visible, the Near-Infrared, the Short-Infrared, the Mid-Infrared or the Far-Infrared region, of determined fixed position, of a series of partially overlapping optronic images, including an image or several images of the scene (step A1), - automatic extraction in the images, of descriptors defined by their image coordinates and their radiometric characteristics, with at least one descriptor of unknown direction in each overlap of images (step B1), - from the descriptors extracted in the overlaps between images, automatic estimation of the mutual relative rotation of the images and mapping of the descriptors extracted in the overlaps (step C1), - identification in the images, of at least one known reference geographic direction of precision compatible with the desired performance, and determination of the image coordinates of each reference (step D1), - from the descriptors extracted in the overlaps and mapped, the direction and image coordinates of each reference, automatic estimation of the attitude of each image and estimation of the focal length of the first imaging device with a precision compatible with the desired performance, called fine registration step (step E1), - from the attitude of each image, the position and internal parameters of the first imaging device including the focal length, and the image coordinates of each descriptor, computation of the absolute directions of the descriptors according to a predetermined model of shooting of the imaging device (step F1), the online operation phase comprising the following steps: - acquisition of at least one image of the object called current image, from a second imaging device of the same determined fixed position as the first imaging device (step A2), - automatic extraction of descriptors in each current image (step B2), - automatic mapping of the descriptors of each current image with the descriptors whose absolute direction was calculated in the learning phase, to determine the absolute direction of the descriptors of each current image (step C2), - from the absolute directions of the descriptors of each current image, automatic estimation of the attitude of each current image (step D2), - from the image coordinates of the object in each current image, the attitude of each current image, the position and internal parameters of the second imaging device, automatic computation of the absolute direction of the object according to a model of shooting of each current image (step E2). - acquisition by circular scanning by means of a channel of a first optronic imaging device in the visible, the Near-Infrared, the Short-Infrared, the Mid-Infrared or the Far-Infrared region, of determined fixed position, of a series of partially overlapping optronic images, including an image or several images of the scene (step A1), - automatic extraction in the images, of descriptors defined by their image coordinates and their radiometric characteristics, with at least one descriptor of unknown direction in each overlap of images (step B1), - from the descriptors extracted in the overlaps between images, automatic estimation of the mutual relative rotation of the images and mapping of the descriptors extracted in the overlaps (step C1), - identification in the images, of at least one known reference geographic direction of precision compatible with the desired performance, and determination of the image coordinates of each reference (step D1), - from the descriptors extracted in the overlaps and mapped, the direction and image coordinates of each reference, automatic estimation of the attitude of each image and estimation of the focal length of the first imaging device with a precision compatible with the desired performance, called fine registration step (step E1), - from the attitude of each image, the position and internal parameters of the first imaging device including the focal length, and the image coordinates of each descriptor, computation of the absolute directions of the descriptors according to a predetermined model of shooting of the imaging device (step F1), - acquisition of at least one image of the object called current image, from a second imaging device of the same determined fixed position as the first imaging device (step A2), - automatic extraction of descriptors in each current image (step B2), - automatic mapping of the descriptors of each current image with the descriptors whose absolute direction was calculated in the learning phase, to determine the absolute direction of the descriptors of each current image (step C2), - from the absolute directions of the descriptors of each current image, automatic estimation of the attitude of each current image (step D2), - from the image coordinates of the object in each current image, the attitude of each current image, the position and internal parameters of the second imaging device, automatic computation of the absolute direction of the object according to a model of shooting of each current image (step E2).