Fast Ray Tracing of Scale‐Invariant Integral Surfaces

Fast Ray Tracing of Scale‐Invariant Integral Surfaces
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尺度不变积分表面的快速光线追踪

DOI:
10.1111/cgf.14208
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发表时间:
2021
影响因子:
2.5
通讯作者:
C. Zanni
C. Zanni
中科院分区:
计算机科学4区
文献类型:
--
作者:
M. Aydinlilar;C. Zanni

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尺度不变的积分曲面是曲面的隐式表示,它提供了一种从骨架定义光滑曲面的方法,骨架的顶点定义了指定的半径。我们引入了一个新的渲染管道,允许可视化这样的表面在真实的时间。我们依赖于到骨架的距离来定义沿相机射线的沿着采样策略,将每条射线划分为子区间。所提出的策略被选择来捕获主要的场变化。产生的间隔迭代处理,依赖于两个主要成分;二次插值和字段映射,近似平方相似距离。第一种方法提供了有效的求根,而第二种方法提高了插值的精度,两者的结合产生了有效的处理例程。最后,我们提出了一个GPU实现,它依赖于一个动态的数据结构,以有效地生成沿射线的间隔沿着。此数据结构还可用作加速结构,允许在处理给定光线期间对感兴趣的图元进行恒定时间访问。
Scale‐invariant integral surfaces, which are implicit representations of surfaces, provide a way to define smooth surfaces from skeletons with prescribed radii defined at their vertices. We introduce a new rendering pipeline allowing to visualize such surfaces in real‐time. We rely on the distance to skeleton to define a sampling strategy along the camera rays, dividing each ray into sub‐intervals. The proposed strategy is chosen to capture main field variations. Resulting intervals are processed iteratively, relying on two main ingredients; quadratic interpolation and field mapping, to an approximate squared homothetic distance. The first provides efficient root finding while the second increases the precision of the interpolation, and the combination of both results in an efficient processing routine. Finally, we present a GPU implementation that relies on a dynamic data‐structure in order to efficiently generate the intervals along the ray. This data‐structure also serves as an acceleration structure that allows constant time access to the primitives of interest during the processing of a given ray.
DOI: 10.1145/3355089.3356502
发表时间: 2019-11
期刊: ACM Transactions on Graphics (TOG)
影响因子: --
作者:
Dario Seyb;Alec Jacobson;D. Nowrouzezahrai;Wojciech Jarosz
通讯作者: Dario Seyb;Alec Jacobson;D. Nowrouzezahrai;Wojciech Jarosz
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DOI: 10.2312/stag.20141233
发表时间: 2014
期刊:
影响因子: --
作者:
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通讯作者: M. Stamminger