OSIRIS: A SIMULATOR OF OUTDOOR SCENES IN THERMAL INFRARED RANGE

T Poglio (1) , E Savaria (1) , Lucien Wald (2)

1 Alcatel Space
2 CEP - Centre Énergétique et Procédés

This paper deals with the simulation of very high spatial resolution images in the thermal infrared range, from 3 to 14 µm. It recalls the physical processes occurring in this spectral range. The complexity of the simulation of such processes is explained. The specifications of the simulator and a methodology for the simulation of infrared imagery are proposed. This methodology enables a very accurate simulation of the signal coming from each object constituting the landscape. The interactions between the radiations and objects and the convective and conductive interactions between objects themselves are considered. Their variations in time, and the recent past of the temperature and the humidity for each object, are taken into account. To reproduce these physical phenomena, the computation is performed on elements, which are defined as homogeneous entities with respect to the physical processes. The architecture of the simulator OSIRIS using the elements is presented. Finally, examples are shown, showing the efficiency of the simulator and the methodology used.

Mots clés: Imagery; Landscape; Modelling; Remote Sensing; Temperature; Three-Dimensional

Domaines: Traitement du signal et de l'image [eess.SP]; Optique / photonique

T Poglio, E Savaria, Lucien Wald. OSIRIS: A SIMULATOR OF OUTDOOR SCENES IN THERMAL INFRARED RANGE. ISPRS Commission III Symposium "Photogrammetric Computer Vision", Sep 2002, Graz, Austria. pp.240-245. ⟨hal-01495349⟩