Improved Computational Methods for Ray Tracing

Traversal methods for GPU ray tracing

Ways of exploiting the raw performance of GPUs for computing ray tracing have been a hot research topic recently. Performance similar to the multi-core CPU ray tracing engines has been achieved. In this paper we present a new traversal method created by combining two of the existing methods. The proposed method is less sensitive to performance loss due to certain object scene distribution. It c...

Improved ray tracing air mass numbers model.

An improved ray tracing air mass model to calculate the air mass numbers for the entire zenith angle range is developed. The improved model uses the approach when the trajectory element of light in the atmosphere is approximated by an arc of a circle. This way the angles at the beginning and at the end of the trajectory element can be counted simultaneously. This approach gives the second-order...

Ray-tracing and Interferometry in Schwarzschild Geometry

Here, we investigate the possible optical anisotropy of vacuum due to gravitational field. In doing this, we provide sufficient evidence from direct coordinate integration of the null-geodesic equations obtained from the Lagrangian method, as well as ray-tracing equations obtained from the Plebanski’s equivalent medium theory. All calculations are done for the Schwarzschild geometry, which resu...

Computational Methods for Macroeconometric Models Ray

Hybrid ray tracing - ray tracing using gpu-accelerated image-space methods

In recent years, interactive ray tracing has become a reality, although mainly by using clustered workstations and sophisticated acceleration structures. On non-clustered computer architectures this is still not an easy task, especially when rendering animated scenes, even though the computation power of modern workstations is increasing rapidly. In this paper we propose known image-space rende...