Optronic system and method dedicated to identification for formulating three-dimensional images

摘要

The invention relates to an optronic system for identifying an object including a photosensitive sensor, communication means and a computerized processing means making it possible to reconstruct the object in three dimensions on the basis of the images captured by the sensor and to identify the object on the basis of the reconstruction. The photosensitive sensor is able to record images of the object representing the intensity levels of an electromagnetic radiation reflected by the surface of the object captured from several observation angles around the object and the communication means are able to transmit the said images to the computerized processing means to reconstruct the object in three dimensions by means of a tomography function configured to process the images of the object representing the intensity levels of an electromagnetic radiation reflected by the surface of the object. The invention also relates to a method of computerized processing for object identification by reconstruction of the object in three dimensions. The invention is applied to the field of target detection, to the medical field and also microelectronics, for example.

主权项

1. An optronic system for identifying an object, comprising:
a photosensitive sensor; communication means; a computerized processing means which reconstructs the object in three dimensions on the basis of images captured by the photosensitive sensor and identifies the object on the basis of the reconstruction, the object being a partially camouflaged object; wherein the photosensitive sensor records the images of the object representing intensity levels of an electromagnetic radiation reflected by a surface of the object captured from a plurality of observation angles around the object and the communication means transmits the images to the computerized processing means to reconstruct the object in three dimensions by means of a tomography function configured to process the images of the object representing the intensity levels of the electromagnetic radiation reflected by the surface of the object; a means for pointing towards a reference position allowing the photosensitive sensor to record a sequence of images captured from observation angles that are close to and centred on the reference position and the computerized processing means is configured to position on the reference position, each image of the sequence shifted from the reference position and configured to reconstruct, in three-dimensions, the surface of the object by extracting a zone of interest in a three-dimensional reconstruction of a scene captured by the sequence of images, said three-dimensional reconstruction of the scene including an image of the object; and means for measuring a distance between the photosensitive sensor and the reference position so that the computerized processing means is configured to modify dimensions of the object represented in an image as a function of said distance so that the dimensions of the object represented in the images of the same sequence that are used for the reconstruction are equivalent between the images, wherein the computerized processing means is configured to modify an illumination of the image as a function of the distance between the photosensitive sensor and the reference position so that the images of the same sequence that are used for reconstruction are of an equivalent illumination level.