OKTAL-SE publications

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- Electro-Optic (infrared)
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Improvement of global illumination methods for infrared rendering of outdoor scenes including targets

Download PDF ITMBS 2008-1
In this paper, we describe the recent evolutions of SE-RAY-IR that concerns improvements, firstly, of the physical materials description using a BRDF well fitted to complex materials and secondly of the rendering algorithm. We present a new highly configurable hybrid approach that takes the best-suited methods for each simulated phenomena among a set of literature rendering methods. It enables to compute highly realistic simulation of outdoor scenes, taking into account skylight multiple reflections, extended sources and glossy reflections.

Improvement of the SE-WORKBENCH workshop for rendering targets

Download PDF ITMBS 2008-2
The SE-WORKBENCH workshop, also called CHORALE, is used by the French DGA to perform multi-sensors simulations. The SE-WORKBENCH enables the user to create virtual and realistic multi spectral 3D scenes that may contain several targets, and then generate the physical signal received by a sensor. One of the main current interests for the DGA is to be able to compute the infrared (IR) signature of targets in their environment as accurately as possible, even if the targets are coated with a special paint for improving their stealthness. But for that the SE-WORKBENCH workshop needs to be improved as regard to the BRDF (Bidirectional Reflectance Distribution Function) modelling of the materials.