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Newtown History Center

Explore the 2nd Oldest Town in the Shenandoah Valley

Hybrid Drawings

One of the great challenges we have with the Stone House is helping people understand how it has changed and developed from its initial construction in the mid-1760s to its present form that we see today. To help us visualize this architectural evolution, we are employing new digital technologies. Using CAD (computer-aided drafting) programs that are currently available, people can create virtual three-dimensional models that can be “explored” on a computer or video screen. These programs can also be used to create slide shows or even interactive animations that show a structure’s architectural development over time.

P2As late as the 1990s and early 2000s the common way to document a structure like the Stone House was with carefully made, hand-produced drawings that captured the distinct measurements of each architectural feature. These drawings were sometimes created with the help of technologies called photogrammetry and rectified photography. Photogrammetry combines principles of photography and geometry in a method where scaled drawings can be made from photographic images. Rectified photography uses optical means to rectify and “correct” a photographic image so that one plane of the structure’s surface is recorded without distortion. These techniques used traditional emulsion photographic methods to create images of a structure’s flat facades and elevations. One limitation of these older methods is that they tend to work best when only one plane is being documented. More complex structures with multiple planes at various depths were not as easily documented.

One of the new technologies that have been introduced with the digital revolution is the ability to combine the accuracy of rectified photography with what are called “3-D point clouds.” A point cloud is created with photogrammetry. It uses the sum of measurements made from a series of overlapping photographs taken from a variety of vantage points. In other words, multiple planes can be accurately documented, and data is generated that can be used in a computer program to create a virtual three-dimensional image from these “point clouds.”

DSCN3627To document the Stone House with this new digital technology, we hired a specialist preservation photographer named Peter Aaslestad from Staunton, Virginia. On 28 February 2013 Mr. Aaslestad and his assistant photographed the entire Stone House structure using special cameras and equipment. From these photographs he generated hybrid drawings of the Stone House for us using specialized software and CAD technology. As Mr. Aaslestad explains on his website, “Hybrid Drawings are a mixture between measured line drawings, rectified photography, and 3-D point clouds.” They are the state-of-the-art method for documenting historic structures, and the data collected in these images can then be used by architects to draft plans for a building’s restoration. They can also be used to create slide shows or an interactive animation that illustrate a structure’s architectural development over time. This is something we hope to be able to do in the future so that you can experience a visual presentation that explains what we have discovered about the history of the structural evolution of the Stone House.

Stone House Restoration Project Progress Updates

  • The Preservation Trades Challenge
  • The Last of the Shingles Have Arrived!
  • The People in Mr. Gainer’s Painting
  • Stone House Restoration Project
  • History of Ownership
  • Hybrid Drawings
  • Dendrochronology Study of the Log Addition
  • Behind the Plaster
  • Archeology

Upcoming Events

What We Do

With the town of Stephens City as its focus, the Foundation seeks to interest and engage residents, visitors, scholars and students in the events, lifeways and material culture of the region. We also strive to promote the preservation of the buildings, artifacts and landscapes that are associated with the history of the town of Stephens City.

Current Hours of Operation

For current hours of operation please click here.

History Center Location

PO Box 143 (USPS Mail)
5408 Main Street (FedEx/UPS Deliveries)
Stephens City, VA 22655-0143

Phone: (540) 869-1700
E-mail: info@newtownhistorycenter.org

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