Houng, S C; Pal, A and Lin, J J (2024) 4D BIM and reality model-driven camera placement optimization for construction monitoring. Journal of Construction Engineering and Management, 150(6): 04024045, ISSN 0733-9364
Abstract
Cameras are one of the most valuable sensors for collecting high-quality visual data on construction sites for uses ranging from surveillance to automated information exaction. The dynamic nature of sites means the visual data from cameras can suffer from occlusions and lack of coverage due to progressing works, hindering the performance of automated visual analysis methods. Therefore, manual planning and adjustments by experienced practitioners are required for appropriate camera placement at the site, which is expensive and time-consuming. Past research has simulated cameras and used algorithms with an objective function to optimize installation parameters with planned site models ranging from two-dimensional (2D) to four-dimensional (4D). However, these models lack information from ongoing site conditions, hampering actual camera performance. This study proposes a camera placement framework incorporating 4D-building information model (BIM) and reality models. The framework first identifies the camera placement determinants through expert interviews. Next, the planned BIM and reality models are used to construct the simulation environment, and camera placement parameters are optimized. The proposed framework is implemented and evaluated on a construction site. 25% average camera coverage improvement from the benchmark solution is achieved. This study further contributes to the potential application of automated visual monitoring systems on construction sites.
| Item Type: | Article |
|---|---|
| Index terms: | placement, visual monitoring, interview, monitoring, construction site, determinant, practitioner, surveillance |
| Subjects: | risk assessment, work location, monitoring and control systems, data collection methods, practitioner, management, control systems |
| Topics: | Risk Management, Governance, Research Practice, Site Management, Human Resources, Roles and Professions |
| Descriptive scope: | 3 PCE |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here