Crowd-sourced visual data collection for monitoring indoor construction in 3d

Research output: Contribution to journalConference articlepeer-review

Abstract

Complete and accurate 3D monitoring of indoor construction progress using visual data is challenging. It requires (a) capturing a large number of overlapping images, which is time-consuming and labor-intensive to collect, and (b) processing using Structure from Motion (SfM) algorithms, which can be computationally expensive. To address these inefficiencies, this paper proposes a hybrid SfM-SLAM 3D reconstruction algorithm along with a decentralized data collection workflow to map indoor construction work locations in 3D and any desired frequency. The hybrid 3D reconstruction method is composed of a pipeline of Structure from Motion (SfM) coupled with Multi-View Stereo (MVS) to generate 3D point clouds and a SLAM (Simultaneous Localization and Mapping) algorithm to register the separately formed models together. Our SfM and SLAM pipelines are built on binary Oriented FAST and Rotated BRIEF (ORB) descriptors to tightly couple these two seperate reconstruction workflows and enable fast computation. To elaborate the data capture workflow and validate the proposed method, a case study was conducted on a real-world construction site. Compared to state-of-the-art methods, our preliminary results show a decrease in both registration error and processing time, demonstrating the potential of using daily images captured by different trades coupled with weekly walkthrough videos captured by a field engineer for complete 3D visual monitoring of indoor construction operations.

Original languageEnglish (US)
Article numberCON-07
JournalProceedings of International Structural Engineering and Construction
Volume5
Issue number1
DOIs
StatePublished - 2018
Event2nd European and Mediterranean Structural Engineering and Construction Conference, EURO-MED-SEC-2 2018 - Beirut, Lebanon
Duration: Jul 23 2018Jul 28 2018

Keywords

  • Automation
  • Computer vision
  • Data collection decentralization
  • Production control
  • Simultaneous localization and mapping
  • Structure-from-motion
  • Virtual construction

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Building and Construction
  • Architecture
  • Civil and Structural Engineering

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