Tracking of excavation activities by laser scanning and image reasoning-based techniques

Y. M.A. Hashash, C. A. Quiñones-Rozo, D. R. Groholski

Research output: Contribution to journalArticlepeer-review


This article demonstrates the viability of two imaging techniques for the tracking of construction activities. These techniques are employed to aid the engineer in establishing the cause-effect relationship in which the occurrence of a particular ground movement can be associated with a specific construction activity in the field Three Dimensional Laser Scanning (3DLS) provides 3-D images of the construction site, to scale, with unprecedented level of detail. These images can have a range of uses, including development of as-built records, correlation of construction activities to measured response, and for the development of numerical modeling. The amount of time and effort required for a successful scanning session and post-processing of the data is heavily dependent on the planning performed before execution. Due to the time demands 3DLS is able to provide details of the excavation activity on a weekly basis. The enhanced pattern detection and comparison (EPDC) technique allows for the rapid processing of images obtained from digital cameras to track excavation activity at a construction site. EPDC provides a complementary capability to laser scanning when used to process images taken on a daily or even hourly basis.

Original languageEnglish (US)
Pages (from-to)35-37
Number of pages3
JournalGeotechnical News
Issue number1
StatePublished - Mar 2009

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology


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