Digital image correlation with a moving camera using structure from motion calibration

• Type: Article in International Conference Proceedings Book
• Date: 2019

Authors

Barros, F (Author) Other; Sousa, PJ (Author) FEUP; Tavares, PJ (Author) Other; Moreira, PMGP (Author) Other

Conference proceedings International

Title: 3RD INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY (ICSI 2019)

Pages: 986-991

3rd International Conference on Structural Integrity (ICSI)

Funchal, PORTUGAL, SEP 02-05, 2019

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00R-92V

DOI: 10.1016/j.prostr.2019.08.131

Abstract (EN): The application of digital image correlation (DIC) in structural monitoring can benefit from the use of remote controlled image acquisition systems such as unmanned aerial vehicles (UAVs) in cases where the structure to be assessed is of difficult accessibility. However, this configuration does not always allow normal camera calibration procedures to be followed. In this work, a camera is manually moved around an object prepared with a speckle pattern, in a reference state and later in a loaded state, in an attempt to emulate the behaviour of a UAV. A structure from motion (SfM) algorithm is applied to the captured images in order to obtain camera calibration parameters for each image, using the features found in the object's surroundings. An image pair from each state is chosen and 3D DIC is performed on the object using the previously obtained calibration. (C) 2019 The Authors. Published by Elsevier B.V.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6