Whitepapers

Whitepapers provide information on critical technology areas and how Presagis products can help in your development efforts.

Vega Prime Marine

August 23, 2010

Shadow Mapping

Presagis shadow mapping feature is supported in its visualization toolkit Vega Prime and its turnkey image generator Lyra. A brief background on shadow mapping and its caveats are presented here, followed by descriptions of various techniques employed to address common problems with shadow mapping. Strategies are discussed on how to balance high frame rates with key training objectives. Finally, the roles shadows play with Night Vision Goggles (NVG) and Infra Red (IR) wavebands are discussed. Working illustrations from Vega Prime are provided.

July 21, 2009

Specular Reflectance of Water

This paper discusses the characteristics of water in different wavebands. It explains the basic constituents of reflectivity and its role that dictates how water appears within an imaging system. Details of mathematical constructs, such as a Bidirectional Reflectance Distribution.

November 28, 2007

Automated Shader Generation using a Shader Infrastructure

This paper presented at I/ITSEC 2007 introduces a Shader Infrastructure that automates the building of vertex and fragment shaders by analyzing the OpenGL state machine. The Shader Infrastructure is capable of not only dynamic generation of highly efficient shaders for rendering any legacy data considered valid by the OpenFlight standard, but also extending the rendering pipeline via Advanced Rendering Techniques.

August 22, 2007

An Open Programming Architecture for Modeling Ocean Waves

Typical ocean simulations provide for wave modeling that is extraordinarily restrictive. Read how our creative solution introduces new algorithms for rendering ocean waves in one unified manner, while simulation algorithms that are not native to any software system perform the generation and animation of the waves, modify the character of the ocean surface, and manage the underlying physics.

December 04, 2006

Surf Zone Modeling for an EFV Trainer for the UMSC

Find out how the UMSC used Vega Prime to solve challenges related to open water simulation for the EFV Trainer.