### Abstract

Technological innovations in photogrammetry have progressed over time, and civil engineers in Japan have employed this technology for earthworks. Photogrammetry has also been introduced to building construction work, and in particular, it is used in the surveying of buildings and the production of architectural drawings in repair work. With this motivation, the authors evaluate the accuracy of Three-dimensional (3D) model extraction using structure from motion (SfM) photogrammetry. In particular, the authors evaluate the accuracy of the height measurements (Z axis). The authors survey the accuracy of a 3D model using a cube with a side length of 5 cm. Our surveying procedure consists of the following four steps: 1. Place the cube on a turntable, rotate the turntable in 5° increment, and capture 72 photographs. 2. Select 12 photographs considering six control points. Edit the control points given their 3D positions in each of the 12 photographs. 3. Extract the 3D model using SfM software. 4. Import the 3D model and measure the height of the cube at 121 points. In this paper, we discuss the differences in the measurement accuracy resulting from the differences in the camera position.

Original language | English |
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Pages | 834-839 |

Number of pages | 6 |

Publication status | Published - 2017 Jan 1 |

Externally published | Yes |

Event | 34th International Symposium on Automation and Robotics in Construction, ISARC 2017 - Taipei, Taiwan, Province of China Duration: 2017 Jun 28 → 2017 Jul 1 |

### Other

Other | 34th International Symposium on Automation and Robotics in Construction, ISARC 2017 |
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Country | Taiwan, Province of China |

City | Taipei |

Period | 17/6/28 → 17/7/1 |

### Fingerprint

### Keywords

- Accuracy
- Height
- Photogrammetry
- SfM

### ASJC Scopus subject areas

- Building and Construction
- Computer Vision and Pattern Recognition
- Artificial Intelligence

### Cite this

*Investigating the accuracy of 3D models created using SfM*. 834-839. Paper presented at 34th International Symposium on Automation and Robotics in Construction, ISARC 2017, Taipei, Taiwan, Province of China.

**Investigating the accuracy of 3D models created using SfM.** / Ishida, Kosei.

Research output: Contribution to conference › Paper

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TY - CONF

T1 - Investigating the accuracy of 3D models created using SfM

AU - Ishida, Kosei

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Technological innovations in photogrammetry have progressed over time, and civil engineers in Japan have employed this technology for earthworks. Photogrammetry has also been introduced to building construction work, and in particular, it is used in the surveying of buildings and the production of architectural drawings in repair work. With this motivation, the authors evaluate the accuracy of Three-dimensional (3D) model extraction using structure from motion (SfM) photogrammetry. In particular, the authors evaluate the accuracy of the height measurements (Z axis). The authors survey the accuracy of a 3D model using a cube with a side length of 5 cm. Our surveying procedure consists of the following four steps: 1. Place the cube on a turntable, rotate the turntable in 5° increment, and capture 72 photographs. 2. Select 12 photographs considering six control points. Edit the control points given their 3D positions in each of the 12 photographs. 3. Extract the 3D model using SfM software. 4. Import the 3D model and measure the height of the cube at 121 points. In this paper, we discuss the differences in the measurement accuracy resulting from the differences in the camera position.

AB - Technological innovations in photogrammetry have progressed over time, and civil engineers in Japan have employed this technology for earthworks. Photogrammetry has also been introduced to building construction work, and in particular, it is used in the surveying of buildings and the production of architectural drawings in repair work. With this motivation, the authors evaluate the accuracy of Three-dimensional (3D) model extraction using structure from motion (SfM) photogrammetry. In particular, the authors evaluate the accuracy of the height measurements (Z axis). The authors survey the accuracy of a 3D model using a cube with a side length of 5 cm. Our surveying procedure consists of the following four steps: 1. Place the cube on a turntable, rotate the turntable in 5° increment, and capture 72 photographs. 2. Select 12 photographs considering six control points. Edit the control points given their 3D positions in each of the 12 photographs. 3. Extract the 3D model using SfM software. 4. Import the 3D model and measure the height of the cube at 121 points. In this paper, we discuss the differences in the measurement accuracy resulting from the differences in the camera position.

KW - Accuracy

KW - Height

KW - Photogrammetry

KW - SfM

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M3 - Paper

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EP - 839

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