Featured Product
This Week in Quality Digest Live
Metrology Features
Mike Richman
FARO’s new 8-Axis Quantum ScanArm changes the game for manufacturing
Mike Richman
Quality with a Big Q
Eric Gasper
R&R studies ensure your measurement system can measure process variation
Mike Richman
The wisdom and courage to effect change
Gary Bell
Create better products and designs while saving money and reducing scrap

More Features

Metrology News
Offering convenient and cost-effective friction materials testing for automotive industry
High-performance, 3D metrology value accessible to all industries
They are the ultimate solution in force measurement versatility
Designed to hold delicate round parts without distortion for vision inspection
Parts can be checked for defects without being transferred to a measurement lab
Software enables seamless communication between Verisurf AUTOMATE and popular CMM and head controllers
IoT platform uncovers insights into tooling optimization to enhance machine reliability for customers
Replace mechanical indicating applications in smallest AGD size specification class
The FDA wants medical device manufactures to succeed, new technologies in supply chain managment

More News

Direct Dimensions Inc.

Metrology

Case Study: Moving a Five-Piece, 70-Foot Sculpture

3-D laser scanning and digital modeling allow precise repositioning

Published: Wednesday, October 6, 2010 - 16:08

“The Awakening” is a 70-foot sculpture by J. Seward Johnson that depicts a man struggling to free himself from the earth. The installation, which has been a landmark for nearly three decades in Washington D.C.’s Hains Point, is comprised of five aluminum body parts: a right foot, a left knee, a right arm, a left hand, and a bearded face. It was originally installed in 1980 and became a well-recognized attraction next to the Potomac River. It has been on loan to the U.S. Park Service by the artist.

In 2007, the piece was sold to a developer and it became necessary for the sculpture to be moved.

Moving the sculpture and reinstalling it in its intended orientation proved to be a true logistical and spatial challenge. Jon Lash, CEO of Digital Atelier, called on Direct Dimensions Inc. to find an affordable and accurate solution to document “The Awakening” in its exact current state and provide him with a 3-D plot showing the intersections of the sculpture’s mating surface with the ground. The plot would then be used to prepare the new site to receive the sculpture in its original configuration.

In November 2007, 52 scans of the sculpture were taken on site in Hains Point, both with the Konica Minolta Vivid 9i camera and with the Trimble FX scanner. A spherical scanner such as the Trimble FX captures everything in its line of sight, radiating outward from the scanner’s origin.

During the scanning process, the sculpture was treated as five individual pieces, with the scanner capturing each individual piece in its entirety, as well as some of the surrounding pieces. This allowed the Direct Dimensions team to reassemble all the pieces together in a single coordinated model, using PolyWorks software. Each scan was scrubbed to pinpoint only the data set required, then properly aligned and polygonized into an integral model.


The final deliverables to Digital Atelier were complete 2-D and 3-D plots, which showed the entire sculpture aligned into a single coordinate system. These plots allowed the project’s engineers to prepare the new site for the sculpture’s relocation, which occurred on Feb. 19, 2008.

“The Awakening” now rests in its intended orientation at National Harbor, on the eastern bank of the Potomac River.

Discuss

About The Author

Direct Dimensions Inc.’s picture

Direct Dimensions Inc.

Direct Dimensions Inc. (DDI) provides products and service solutions to complex modeling and manufacturing problems, specializing in the on-site application of digitizers, laser scanners, and the conversion of complex 3D data into 3D computer models. DDI enables innovators to capture, model, and modify complex physical shapes, such as organic human forms, that would otherwise be impossible to design even with today’s advanced CAD systems. DDI’s engineers provide data measurement, inspection, and reverse engineering solutions in product evaluation, development, and manufacturing; in cultural preservation; medical prosthetics; and color 3D imaging for consumer applications.