# Single-Camera Three-Dimensional Digital Image Correlation with Enhanced Accuracy Based on Four-View Imaging

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## Abstract

**:**

## 1. Introduction

## 2. Methodology

## 3. Experimental Results

## 4. Discussion and Conclusions

## Author Contributions

## Funding

## Institutional Review Board Statement

## Informed Consent Statement

## Data Availability Statement

## Conflicts of Interest

## References

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**Figure 10.**Comparisons of displacement standard deviation in static experiment between case VIEW-12 (results obtained from camera1 and camera2) and case VIEW-1234 (results obtained from four cameras): (

**a**) DX; (

**b**) DY; (

**c**) DZ.

**Figure 12.**Results and comparisons in the rigid body translation experiment: (

**a**) absolute error of in-plane displacement; (

**b**) absolute error of out-of-plane displacement.

**Figure 14.**(

**a**) Speckle image of the four-point bending beam from four views in the experiment; (

**b**) full-field strain ${\epsilon}_{xx}$ of the pure bending section.

**Figure 15.**Results and comparisons in the four-point bending experiment: (

**a**) measured strain; (

**b**) absolute error.

**Figure 16.**Resolution comparison of binocular stereo imaging, single-camera two-view, and four-view imaging for rectangular and square objects.

Camera | IDS, Ueye CP3370 |

Resolution/Pixel size | 2048 × 2048 pixels/5.5 μm |

Lens | Kowa, 25 mm |

Working distance | 200 mm |

Field of view | 100mm |

Subset/Step | 27 × 27 pixels/5 pixels |

Illumination/Wavelength | Single narrowband blue light/450 nm |

External Parameters | View 1–2 | View 1–3 | View 1–4 |
---|---|---|---|

Rotation-X | 0.14° | 15.77° | 15.74° |

Rotation-Y | −15.53° | 0.65° | −15.89° |

Rotation-Z | 3.61° | 0.99° | 0.17° |

Translation-X | −55.27 mm | 2.85 mm | −57.03 mm |

Translation-Y | −3.21 mm | −57.15 mm | −57.15 mm |

Translation-Z | −6.98 mm | −1.74 mm | −6.12 mm |

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**MDPI and ACS Style**

Shao, X.; Qu, J.; Chen, W. Single-Camera Three-Dimensional Digital Image Correlation with Enhanced Accuracy Based on Four-View Imaging. *Materials* **2023**, *16*, 2726.
https://doi.org/10.3390/ma16072726

**AMA Style**

Shao X, Qu J, Chen W. Single-Camera Three-Dimensional Digital Image Correlation with Enhanced Accuracy Based on Four-View Imaging. *Materials*. 2023; 16(7):2726.
https://doi.org/10.3390/ma16072726

**Chicago/Turabian Style**

Shao, Xinxing, Jingye Qu, and Wenwu Chen. 2023. "Single-Camera Three-Dimensional Digital Image Correlation with Enhanced Accuracy Based on Four-View Imaging" *Materials* 16, no. 7: 2726.
https://doi.org/10.3390/ma16072726