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Jul 11, 2012
Automated Vision-Based Recognition of Construction Worker Actions for Building Interior Construction Operations Using RGBD Cameras
Authors: Víctor Escorcia [email protected], María A. Dávila [email protected], Mani Golparvar-Fard [email protected], and Juan Carlos Niebles [email protected]Author Affiliations
Publication: Construction Research Congress 2012: Construction Challenges in a Flat World
Abstract
In this paper we present a novel method for reliable recognition of construction workers and their actions using color and depth data from a Microsoft Kinect sensor. Our algorithm is based on machine learning techniques, in which meaningful visual features are extracted based on the estimated body pose of workers. We adopt a bag-of-poses representation for worker actions and combine it with powerful discriminative classifiers to achieve accurate action recognition. The discriminative framework is able to focus on the visual aspects that are distinctive and can detect and recognize actions from different workers. We train and test our algorithm by using 80 videos from four workers involved in five drywall related construction activities. These videos were all collected from drywall construction activities inside of an under construction dining hall facility. The proposed algorithm is further validated by recognizing the actions of a construction worker that was never seen before in the training dataset. Experimental results show that our method achieves an average precision of 85.28 percent. The results reflect the promise of the proposed method for automated assessment of craftsmen productivity, safety, and occupational health at indoor environments.
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© 2012 American Society of Civil Engineers.
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Published online: Jul 11, 2012
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Electrical and Electronic Engineering Dept., Universidad del Norte, Barranquilla, Colombia. E-mail: [email protected]
Electrical and Electronic Engineering Dept., Universidad del Norte, Barranquilla, Colombia. E-mail: [email protected]
Assistant Professor, Vecellio Construction Eng. and Mgmt., Via Dept. of Civil and Env. Eng., and Myers-Lawson School of Construction, Virginia Tech, Blacksburg, VA. E-mail: [email protected]
Electrical and Electronic Engineering Dept., Universidad del Norte, Barranquilla, Colombia. E-mail: [email protected]
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