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Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications
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TLDR
In this paper, a comprehensive overview of image correlation for shape, motion and deformation measurements is provided. But, the authors do not discuss the effect of out-of-plane motion on 2D measurements.Abstract:
Image Correlation for Shape, Motion and Deformation Measurements provides a comprehensive overview of data extraction through image analysis. Readers will find and in-depth look into various single- and multi-camera models (2D-DIC and 3D-DIC), two- and three-dimensional computer vision, and volumetric digital image correlation (VDIC). Fundamentals of accurate image matching are described, along with presentations of both new methods for quantitative error estimates in correlation-based motion measurements, and the effect of out-of-plane motion on 2D measurements. Thorough appendices offer descriptions of continuum mechanics formulations, methods for local surface strain estimation and non-linear optimization, as well as terminology in statistics and probability. With equal treatment of computer vision fundamentals and techniques for practical applications, this volume is both a reference for academic and industry-based researchers and engineers, as well as a valuable companion text for appropriate vision-based educational offerings.read more
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Journal ArticleDOI
Sub-trabecular strain evolution in human trabecular bone
Mikael J. Turunen,Mikael J. Turunen,Sophie Le Cann,Erika Tudisco,Goran Lovric,Goran Lovric,Alessandra Patera,Stephen Hall,Hanna Isaksson +8 more
TL;DR: Investigation of the three-dimensional strain distribution and its evolution during loading at the sub-trabecular level in human bone found lower strain levels and a reduced ability to capture detailed crack-paths with increased image voxel size, which highlights the dependence between the observed strain Levels and the voxels size and that high-resolution is needed to investigate behavior of individual trabeculae.
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Heterogeneous parallel computing accelerated iterative subpixel digital image correlation
Jianwen Huang,Lingqi Zhang,Zhenyu Jiang,Zhenyu Jiang,Shoubin Dong,Wei Chen,Yiping Liu,Zejia Liu,Licheng Zhou,Liqun Tang +9 more
TL;DR: A heterogeneous parallel computing (HPC) model is proposed with hybrid mode of parallelisms in order to combine the computing power of GPU and multicore CPU and shows excellent performance on a middle-end desktop computer for real-time subpixel DIC with high resolution of more than 10000 POIs per frame.
Journal ArticleDOI
Performance of global look-up table strategy in digital image correlation with cubic B-spline interpolation and bicubic interpolation
TL;DR: The global look-up table strategy with cubic B-spline interpolation improves significantly the accuracy of the IC-GN algorithm-based DIC method compared with the one using the bicubic interpolation, at a trivial price of computation efficiency.
Journal ArticleDOI
Mechanical behaviour modelling and finite element simulation of simple part of Ti-6Al-4V sheet under hot/warm stamping conditions
TL;DR: In this paper, the behaviour modelling of Ti-6Al-4V alloy at temperatures between 400°C and 500°C was investigated to obtain greater formability than at room temperature, whilst remaining below SPF conditions.
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Response of thin lightly-reinforced concrete walls under cyclic loading
Carlos A. Blandon,Carlos A. Arteta,Ricardo L. Bonett,Julian Carrillo,Katrin Beyer,João Saraiva Esteves Pacheco de Almeida +5 more
TL;DR: In this paper, the results of an experimental program comprising quasi-static cyclic tests of four slender, thin and lightly-reinforced concrete walls with different geometrical configurations, steel properties and reinforcement layouts, which correspond to a common construction practice in Colombia, are discussed.