Fast digital image correlation using parallel temporal sequence correlation method
作者: Chen XiongJiatao ChenFeng LiMing Cai
作者单位: 1Sun Yat-sen University
2Guangdong Polytechnic Normal University
刊名: Optical Engineering, 2019, Vol.58 (12), pp.124101-124101
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.OE.58.12.124101
关键词: Digital image correlationGraphics processing unitParallel computingMoving least-squares fitting
原始语种摘要: Digital image correlation (DIC) is a noncontact technique that is widely used for deformation measurement, but improving the calculation efficiency to achieve real-time DIC calculation has always been a big concern. A parallel temporal sequence DIC method is proposed, which chooses seed points to determine the integer-pixel displacement and applies the moving least-squares fitting technique to acquire the subpixel displacement. This method avoids traditional complex iterations and takes full advantage of the GPU parallel computing. Results of a simulation experiment and an actual experiment demonstrate the accuracy and efficiency of the proposed algorithm. The calculation speed in the simulation experiment of the proposed method achieved 463,320 POI/s, whereas the speed in the actual...
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关键词翻译
关键词翻译
  • temporal 现世的
  • image 
  • digital 数字的
  • pixel 像素
  • calculation 计算
  • achieve 达到
  • computational 计算的
  • technique 技术
  • correlation 对比
  • method 方法