Fast Ray Tracing of Scale‐Invariant Integral Surfaces
Fast Ray Tracing of Scale‐Invariant Integral Surfaces
复制标题
尺度不变积分表面的快速光线追踪
DOI:
10.1111/cgf.14208
复制
发表时间:
2021
影响因子:
2.5
通讯作者:
C. Zanni
中科院分区:
文献类型:
--
作者:
M. Aydinlilar;C. Zanni
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
DOI:
10.2312/stag.20141233
发表时间:
2014
期刊:
影响因子:
--
作者:
B. Keinert;H. Schäfer;J. Korndörfer;U. Ganse;M. Stamminger
通讯作者:
M. Stamminger