|INCORPORATING 3-D LASER SCANNING INTO LAND SURVEYING CURRICULA|
Workshop Held at Evergreen Valley College
As part of the project, a 3D laser scanning for land surveying workshop was held at Evergreen Valley College from July 13 to 14, 2009. Twenty-eight faculty and educators from community colleges, high schools and a university across the country participated in the workshop.
EVC President Dr. David Wain Coon welcomed the participants to EVC campus. In his welcome remarks, President Coon noted that the workshop is one of the first 3D laser scanning curriculum workshops held in a community college in the U.S.
The two-day workshop covered the contents of the 3D laser scanning course developed and implemented at EVC as part of the NSF project as well as the hardware and software used in the course. Participants learned the fundamental principles of 3D laser scanning, structure of a terrestrial laser scanner, field operations, data collection, and post-processing such as point cloud registration, data filtering and checking, mesh and surface generations, digital image calibration, 2D drawing and 3D modeling. Several applications in land surveying and related areas are discussed. The workshop emphasized on hand-on training. Participants are expected to implement the course or use the workshop materials in their classes.
First 3D Laser Scanning for Surveying Class Offered
With the support from the National Science Foundation's Advanced Technological Education Program and Trimble Navigation, Ltd. The first 3D laser scanning for surveying class in Bay area community Colleges is offered at Evergreen Valley College. The course introduces students to 3D laser scanning for land surveying. The fundamental principles of 3D laser scanning are discussed. The implementation of time-of-flight measurement and interaction of laser beams with various types of surfaces are examined. Students will learn the structure of a 3D laser scanner, its operation in the field, data collection and geo-referencing. Topics on post-measurement processing include data transfer to an office computer, point cloud registration and calibration, data filtering and checking, mesh and surface generations, digital image calibration, 2D drawing generation, feature code management and animations. Several applications in land surveying are discussed.
Advisory Committee Meeting Held
An advisory committee meeting was held on February 22, 2008. The PIís and the consultants reported the work that they have done. The advisory committee discussed the 3-D laser scanning course contents and made comments and suggestions on issues related to the implementation of the curriculum at EVC. The external evaluator attended the meeting and talked about evaluation issues. The committee was satisfied with the progress of the project.
Advisory committee meeting (photo by Daniel Torres)
Trimble Provided In-Kind Supports to the Project
Trimble Navigation Limited has made good on their promises, providing $70,469 in-kind contributions to the project, exceeding the originally proposed match amount. As a result, the project has successfully acquired the hardware and software necessary for the implementation of the curriculum and workshops.
The project acquired the Trimble GX DR 200+ 3D laser scanner and accessories and 10 copies of RealWorks Survey software. The GX scanner can capture millions of points very quickly and users have the options to control the density. The instrument can be controlled by TSC2 field controller or a laptop running the field software. The RealWorks survey software can be used in the office to post-process captured data and produce desired deliverables including data export to popular CAD packages such as AutoCAD.
A Trimble GX DR 3D Scanner