...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical engineering >High-efficiency and high-accuracy digital speckle correlation for full-field image deformation measurement
【24h】

High-efficiency and high-accuracy digital speckle correlation for full-field image deformation measurement

机译：高效，高精度的数字散斑相关性，用于全场图像变形测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Many works around the digital speckle correlation (DSC) are to improve the computational efficiency and measurement accuracy in recent years. This work aims to improve the efficiency and accuracy of DSC for both single-point and full-field points used in mechanical properties test of materials. For this purpose, first, a subpixel initial guess for the inverse compositional Gauss-Newton algorithm (IC-GN) with the first-order shape function is introduced for single-point image registration. Then, with the aid of strategy of subset image edge extend interpolation (SIEEI), the efficiency and accuracy of full-field displacement and deformation measurement are improved simultaneously. The SIEEI is employed to reduce mean squared difference errors caused by traditional bicubic interpolation algorithm. Comparative studies between the traditional IC-GN algorithm and the proposed algorithms are presented using simulated speckle images and CCD images. The proposed method achieves more executive efficiency and more accuracy for single-point and full-field points image registration. The computational efficiency of the proposed algorithms increases 7.5% for full-field registration using CCD images. The mean of squared difference errors of the SIEEI method is less than the traditional bicubic interpolation algorithm. The presented approach shows great potentials for challenging application, SUCh as mechanical properties test Of materials.
机译：近年来，围绕数字散斑相关性（DSC）的许多工作都在提高计算效率和测量精度。这项工作旨在提高用于材料力学性能测试的单点和全场点的DSC效率和准确性。为此，首先，针对具有一阶形状函数的逆合成高斯-牛顿算法（IC-GN）的子像素初始猜测，用于单点图像配准。然后，借助子图像边缘扩展插值（SIEEI）策略，同时提高了全视场位移和变形测量的效率和精度。 SIEEI用于减少由传统双三次插值算法引起的均方差。利用模拟散斑图像和CCD图像对传统的IC-GN算法和提出的算法进行了比较研究。所提出的方法为单点和全场点图像配准实现了更高的执行效率和更高的准确性。对于使用CCD图像进行全场配准，提出的算法的计算效率提高了7.5％。 SIEEI方法的均方差误差均值小于传统的双三次插值算法。所提出的方法显示出极具挑战性的应用潜力，如SUCh作为材料的机械性能测试。

著录项

  • 来源
    《Optical engineering》 |2018年第5期|054116.1-054116.9|共9页
  • 作者

    Yu Lu; Jiang Han; Yonghong Wang; Xizuo Dan; Siyuan Bao; Peizheng Yan;

  • 作者单位

    Hefei University of Technology, School of Mechanical Engineering, Hefei, Anhui, China,Anhui Sanlian University, School of Electronic and Electrical Engineering, Hefei, Anhui, China;

    Hefei University of Technology, School of Mechanical Engineering, Hefei, Anhui, China;

    Hefei University of Technology, School of Instrument Science and Opto-electroincs Engineering, Hefei, Anhui, China;

    Hefei University of Technology, School of Instrument Science and Opto-electroincs Engineering, Hefei, Anhui, China;

    Hefei University of Technology, School of Instrument Science and Opto-electroincs Engineering, Hefei, Anhui, China;

    Hefei University of Technology, School of Instrument Science and Opto-electroincs Engineering, Hefei, Anhui, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    digital speckle correlation; inverse compositional Gauss-Newton algorithm; bicubic interpolation algorithm; full-field deformation measurement;

    机译：数字散斑相关逆成分高斯-牛顿算法;双三次插值算法;全场变形测量;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号