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基于数字图像体相关的物体内部三维位移场分析
  • 期刊名称：实验力学
  • 时间：0
  • 页码：247-253
  • 语言：中文
  • 分类：O348[理学—固体力学;理学—力学]
  • 作者机构：[1]中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽合肥230027, [2]中国科学技术大学计算机学院,安徽合肥230027, [3]国家纳米科学中心,北京100080
  • 相关基金：国家自然科学基金项目（10772171,10732080）,国家重点基础研究发展计划资助项目（2007CB936803）
  • 相关项目：微纳尺度实验力学中的传感、测量、识别新方法研究
作者： 张忠|NIU Yong-qiang|HU Xiao-fang|LIU Gui-quan|ZHANG Zhong|胡秋实|HU Qiu-shi|YAN De-ying|许峰|牛永强|刘贵全|闫德莹|胡小方|缪泓|XU Feng|MIAO Hong|
关键词： 数字图像相关, 三维数字图像体相关, 三维位移场, 灰度梯度算法, digital image correlation, 3D digital image volumn correlation, 3D displacement, gray-levelgradient algorithm
中文摘要：

在二维数字图像相关算法的基础上,推导了三维数字图像体相关算法,并应用于物体内部的三维位移场分析。用计算机模拟方法对SR-CT重建的物体内部三维图像施加已知变形,对变形前后三维数字图像进行体相关运算,获得三维位移场。在计算亚像素位移时,本文提出了一种三维的基于灰度梯度的算法,给出了梯度函数,阐述了数字模拟三维体相关的计算过程,通过数字模拟实验证明了算法的正确性和可靠性。

英文摘要：

3D digital image volumn correlation algorithm was improved based on traditional 2D DIC method, and applied to calculate the internal 3D displacement of an object. Original 3D image was a reconstructed image obtained from SR-CT experiment, and the deformed 3D images were computer simulated images subjected to known deform＊ations. A special 3D sub-pixel algorithm based on graylevel gradient was proposed tO determine the sub-pixel displacement, and the 3D gray-level gradient function was presented. The process of 3D DIVC is described in this paper, and the validity of the algorithm is verified.

同期刊论文项目
数字全息中的位相提取技术研究及其在动态实验中的应用
期刊论文 8 会议论文 3
微纳尺度实验力学中的传感、测量、识别新方法研究
期刊论文 140 会议论文 38 获奖 2
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