Search for dissertations about: "Ray Tracing"

Showing result 6 - 10 of 71 swedish dissertations containing the words Ray Tracing.

  2. 6. Faceted conformal antenna arrays analyzed with the uniform theory of diffraction

    Author : Carina Marcus; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Faceted Conformal Antenna; High-frequency methods; Ray tracing;

    Abstract : Faceted conformal antenna arrays are analyzed with the uniform theory of diffraction (UTD). Parameters such as mutual coupling, scattering parameters, isolated and embedded element patterns are calculated.A ray tracing algorithm for handling rays on a faceted surface, which is needed for the UTD calculations, is also described.. READ MORE

  4. 7. Daylighting Systems : Development of Techniques for Optical Characterization and Performance Evaluation

    Author : Annica M. Nilsson; Arne Roos; Claes-Göran Granqvist; Marie-Claude Dubois; Michael Köhl; Uppsala universitet; []
    Keywords : Optical spectroscopy; integrating sphere; ray tracing; light scattering; window physics; Venetian blinds; core daylighting; optical characterization; Teknisk fysik; Engineering Science;

    Abstract : Successful integration of daylighting systems requires the ability to predict their performance for given climates. In this dissertation, a bottom-up approach is applied to evaluate the optical performance of a selection of daylighting systems. READ MORE

  5. 8. Real-Time Algorithms and Intersection Test Methods for Computer Graphics

    Author : Tomas Möller; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; texture; ray tracing; radiosity; color; three-dimensional graphics and realism; virtual reality; algorithms; shadowing; shading;

    Abstract : In real-time computer graphics applications, at least three major forces are in conflict, namely, rendering speed, the level of realism, and interactivity. Therefore this thesis focuses on real-time algorithms that enhance the realism while maintaining high rendering speed, and on fast intersection test methods in order to speed up, for example, collision detection, picking processes and ray tracing. READ MORE

  6. 9. Towards Fully Dynamic Surface Illumination in Real-Time Rendering using Acceleration Data Structures

    Author : Pierre Moreau; Parallella System; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computer graphics; Real-time; Ray tracing; Caustics; Global illumination;

    Abstract : The improvements in GPU hardware, including hardware-accelerated ray tracing, and the push for fully dynamic realistic-looking video games, has been driving more research in the use of ray tracing in real-time applications. The work described in this thesis covers multiple aspects such as optimisations, adapting existing offline methods to real-time constraints, and adding effects which were hard to simulate without the new hardware, all working towards a fully dynamic surface illumination rendering in real-time. READ MORE

  7. 10. Fast and High-Quality Visibility Determination

    Author : Rasmus Barringer; Institutionen för datavetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; computer graphics; visibility; anti-aliasing; line sampling; ray tracing; rendering;

    Abstract : Computer generated imagery is vital to the entertainment industry in the production of games and films, for example. It is also increasingly important for visualization in design, architecture, engineering, and medicine, to name a few. Improvements to rendering techniques come from a combination of improved algorithms and more powerful hardware. READ MORE