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dc.contributor.advisorKang, Julianen_US
dc.contributor.advisorHolland, Nancyen_US
dc.creatorChoi, Ji Wonen_US
dc.date.accessioned2005-11-01T15:51:05Z
dc.date.available2005-11-01T15:51:05Z
dc.date.created2004-08en_US
dc.date.issued2005-11-01
dc.identifier.urihttp://hdl.handle.net/1969.1/2753
dc.description.abstractMany construction companies today utilize webcams on their jobsites to monitor and record construction operations. Jobsite monitoring is often limited to outdoor construction operations due to lack of mobility of wired webcams. A wireless webcam may help monitor indoor construction operations with enhanced mobility. The transfer time of sending a photograph from the wireless webcam, however, is slower than that of a wired webcam. It is expected that professionals may have to analyze indoor construction operations with longer interval time-lapse photographs if they want to use a wireless webcam. This research aimed to determine the maximum time interval for time-lapse photos that enables professionals to interpret construction operations and productivity. In order to accomplish the research goal, brickwork of five different construction sites was videotaped. Various interval time-lapse photographs were generated from each video. Worker?s activity in these photographs was examined and graded. The grades in one-second interval photographs were compared with the grades of the same in longer time interval photographs. Error rates in observing longer time-lapse photographs were then obtained and analyzed to find the maximum time interval of time-lapse photography for monitoring construction operations. Research has discovered that the observation error rate increased rapidly until the 60-second interval and its increasing ratio remained constant. This finding can be used to predict a reasonable amount of error rate when observing time-lapse photographs less than 60-second interval. The observation error rate with longer than 60-second interval did not show a constant trend. Thus, the 60-second interval could be considered as the maximum time interval for professionals to interpret construction operations and productivity.en_US
dc.format.extent5804954 bytes
dc.format.mediumelectronicen_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherTexas A&M Universityen_US
dc.subjectTime-Lapse Photographyen_US
dc.subjectWebcamen_US
dc.subjectTime Intervalen_US
dc.subjectConstructionen_US
dc.subjectMonitoringen_US
dc.subjectFrame Ratesen_US
dc.titleThe maximum time interval of time-lapse photography for monitoring construction operationsen_US
dc.typeBooken
dc.typeThesisen
thesis.degree.departmentConstruction Scienceen_US
thesis.degree.disciplineConstruction Managementen_US
thesis.degree.grantorTexas A&M Universityen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelMastersen_US
dc.contributor.committeeMemberClayton, Marken_US
dc.type.genreElectronic Thesisen_US
dc.type.materialtexten_US
dc.format.digitalOriginborn digitalen_US


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