On ray tracing for sharp changing media.
On ray tracing for sharp changing media.
复制标题
针对急剧变化的媒体的光线追踪。
DOI：
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复制
发表时间：
2019
影响因子：
2.4
通讯作者：
Mario Castelán
中科院分区：
文献类型：
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作者：
Jorge A. Ramos Oliveira;A. Baltazar;Mario Castelán
光线追踪是现代成像和反演技术的重要组成部分。根据应用程序的要求，提出了几种方法。一些算法最适合于快速变化的材料特性，比如两种不同介质之间的界面，而另一些算法则非常适合于性能逐渐变化的介质，比如复合材料。本文提出了一种改进的射线追踪数值算法。重点讨论了具有初值条件的常微分方程的解。本文提出的算法是两种经典实现的结合结果，作者表明它非常适合于折射率变化剧烈和渐变的介质。此外，作者还介绍了一种射线路径计算的应用，这种计算方法被称为射击法。
Ray tracing is an integral part of modern imaging and inversion techniques. Several methods have been proposed depending on the requirements of the application. Some algorithms are best applied to fast changing material properties, like an interface between two differing media, while others are well suited to media with gradually changing properties, like composite materials. In this paper, an enhanced numerical algorithm for ray tracing is presented. Focus is given to solutions involving ordinary differential equations with initial-value conditions. The proposed algorithm is the result of a combination of two classical implementations and the authors show that it is well suited for media with both sharp and gradual changes in the index of refraction. Additionally, the authors present an application of ray path computation by using the technique known as the shooting method.