TY - GEN
T1 - Automated progress monitoring based on photogrammetric point clouds and precedence relationship graphs
AU - Braun, Alexander
AU - Tuttas, Sebastian
AU - Borrmann, André
AU - Stilla, Uwe
PY - 2015
Y1 - 2015
N2 - Construction progress monitoring is an essential but time-consuming work on all construction sites. This research introduces a method to facilitate the asplanned versus as-built comparison through image based monitoring. A dense point cloud is reconstructed from the images that is compared to an existing 4D building information model (BIM). However, due to the numerous obstructions found on a construction site, only a minority of building elements can be detected directly. In this paper, we discuss how the detection results are significantly refined and enriched by using additional spatial and temporal information gained from the 4D BIM. In this regard, a precedence relationship graph is derived which helps to identify occluded elements and enhance the detection algorithm.
AB - Construction progress monitoring is an essential but time-consuming work on all construction sites. This research introduces a method to facilitate the asplanned versus as-built comparison through image based monitoring. A dense point cloud is reconstructed from the images that is compared to an existing 4D building information model (BIM). However, due to the numerous obstructions found on a construction site, only a minority of building elements can be detected directly. In this paper, we discuss how the detection results are significantly refined and enriched by using additional spatial and temporal information gained from the 4D BIM. In this regard, a precedence relationship graph is derived which helps to identify occluded elements and enhance the detection algorithm.
KW - As-planned as-built comparison
KW - Point clouds
KW - Progress monitoring
UR - http://www.scopus.com/inward/record.url?scp=84992513789&partnerID=8YFLogxK
U2 - 10.22260/isarc2015/0034
DO - 10.22260/isarc2015/0034
M3 - Conference contribution
AN - SCOPUS:84992513789
T3 - 32nd International Symposium on Automation and Robotics in Construction and Mining: Connected to the Future, Proceedings
BT - 32nd International Symposium on Automation and Robotics in Construction and Mining
PB - International Association for Automation and Robotics in Construction I.A.A.R.C)
T2 - 32nd International Symposium on Automation and Robotics in Construction and Mining: Connected to the Future, ISARC 2015
Y2 - 15 June 2015 through 18 June 2015
ER -