An analysis on computational load of DIC based on Newton–Raphson scheme
An analysis on computational load of DIC based on Newton–Raphson scheme
复制标题
DOI：
10.1016/j.optlaseng.2013.07.019
复制
发表时间：
2014
影响因子：
4.6
通讯作者：
Zongzheng Wang;Shibin Wang;Zhiyong Wang
中科院分区：
文献类型：
--
作者：
Zongzheng Wang;Shibin Wang;Zhiyong Wang
近年来，由于DIC目前被用作离线技术，因此提高DIC的计算速度以实现实时计算变得越来越重要和高要求。本文详细分析了采用不同计算结构时，基于Newton-Raphson（NR）格式的DIC的计算量（以相关算术运算的总数表示）。计算配置指的是形状函数，插值算法和子集大小。当使用不同的计算配置时，提出了一个理论公式来预测计算负载。然后，数值实验，以获得我们的DIC程序的真实的计算速度。理论计算量与实验计算速度之间具有良好的反相关性。
Improving the computing speed of DIC to realize real-time computation has been increasingly important and highly demanded in recent years since DIC is currently used as an offline technique. In this paper, the computational load of DIC based on Newton–Raphson (NR) scheme, represented by the total number of associated arithmetic operations, is analyzed in detail when different computational configurations are adopted. The computational configurations refer to as the shape function, the interpolation algorithm and the subset size. A theoretical formula is presented to predict the computational load when different computational configurations are used. Then, numerical experiments are performed to obtain the real computing speed of our DIC program. A good inverse correlation is achieved between the theoretical computational load and experimental computing speed.