نتایج جستجو برای: tracing algorithm
تعداد نتایج: 778964 فیلتر نتایج به سال:
The computer graphics research community has recently renewed its interest in ray tracing, an image synthesis algorithm that simulates the interaction of light with an environment to generate highly realistic images (Figure 1). Recent hardware trends and algorithmic developments make the technique competitive with raster-based algorithms, and some suggest that ray tracing will begin to dominate...
PURPOSE To compare the safety, efficacy, and predictability of laser in situ keratomileusis treatments at 1 year postprocedure using a novel geometric ray tracing algorithm with outcomes of treatments using wavefront-optimized, wavefront-guided, and topography-guided ablation profiles of an excimer laser (WaveLight GmbH, Erlangen, Germany; Alcon Laboratories, Fort Worth, TX, USA). SETTING Wel...
This paper is the rst to introduce an algorithm to compute stationary equilibria in stochastic games, and shows convergence of the algorithm for almost all such games. Moreover, since in general the number of stationary equilibria is overwhelming, we pay attention to the issue of equilibrium selection. We do this by extending the linear tracing procedure to the class of stochastic games, called...
The moth-inspired plume-tracing strategies on a single REMUS underwater vehicle successfully tracked a Rhodamine dye plume over 100 m and declared its source location in near-shore ocean environments that are characterized by turbulence, tides, and waves. This paper expands moth-inspired plume tracing via a single vehicle to multiple vehicles. The new strategy includes a mechanism determining a...
For realistic image synthesis and many other simulation applications, ray tracing is the only choice to achieve the desired realism and accuracy. Ray tracing has become such an important algorithm that an implementation in hardware is justified and desirable. The first ray tracing hardware realizations have been using floating point and logarithmic arithmetic. While floating point arithmetic re...
A cover-free family is a well-studied combinatorial structure that has many applications in computer science and cryptography. In this paper, we propose a new public key traitor tracing scheme based on cover-free families. The new traitor tracing scheme is similar to the Boneh-Franklin scheme except that in the BonehFranklin scheme, decryption keys are derived from Reed-Solomon codes while in o...
Ray-tracing techniques for image rendering have produced some of the most realistic images to date. They are also slow because the process of tracing a ray is computationally intensive and because there are many rays to be traced. However. since computations for each pixel are independent, ray tracing is amenable t o parallel processing uslng image space subdivision. The processor per subdivisi...
We present a novel and expedite way to compress triangles meshes, fans and strips for ray-tracing on a GPU. Our approach improves on the state of the art by allowing the lossless compression of all connectivity information without changing the mesh configuration, while using linear time and space with the number of primitives. Furthermore, the algorithm can be run on a stream processor and any ...
We present a cache-based approach to handling the difficult problem of performing visually acceptable texture resampling/filtering while ray-tracing. While many good methods have been proposed to handle the error introduced by the ray-tracing algorithm when sampling in screen space, handling this error in texture space has been less adequately addressed. Our solution is to introduce the Convolu...
Camera simulation aims to enhance realistic rendering, lens design and augmented reality by accurately simulating geometrical optics. Here our work focuses on optical phenomena, such as depth of field, monochromatic aberration, distortion, and aperture exposure, that are based on real camera lens architecture. Our approach is modeling pixel equation using ray tracing algorithm to render scenes ...
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