Sample Orthophoto of Region 7.1 ( greatly reduced)
In summer 2015 I collaborated with the team of architects and engineers studying Main Hall at VSDB. Another company was used for laser scanning in order to prepare floor plans of the building and adequate line drawings for the elevations. I was asked to prepare orthophotos describing the masonry surfaces of the building’s exterior to establish detailed overview of the the various “as found” conditions this historic structure.
Some of the areas were challenging to access visually. The sample above is taken from a rather narrow courtyard or light well. It is a composite formed from dozens of close up shots collected from available photo stations.
Key Plan to regions for orthophotography
Another quick post for a project from summer 2015. I prepared these measured drawings to serve as the basis for designing some changes to accommodate changes in usage of the building.
Whenever a building has a complex roof structure with lots of dormers I am especially thankful for the tool of photogrammetry which helps both augment quality AND keep the project on budget.
Field work: attic plan (sketch) drawn from orthophography
Recently completed project delineating building envelope for a house thought to be beyond repair. Locally known as a “zombie house” – but no more… Here are the orthophotos overlaid atop measured elevation drawings:
Bob White Bridge
Measured Drawings of Bridge Exterior
Last summer I was hired by Frazier Associates in Staunton to prepare some as found documentation of the Bob White Covered Bridge in Patrick County, Virginia for preservation work to be conducted through VDOT. I learned yesterday that bridge was washed away in flash flooding! This is horrible to learn; now only seven covered bridges remain statewide, I believe.
I am therefore VERY glad to have a couple hundred photos of the structure suitable for photogrammetric rectification. I did prepare some simple drawings and orthophotography, small versions of which I’ll share here. I’ll also share some video snap shots of the point cloud I created.
I hope to get in touch with anyone who might be interested in rebuilding. If you stumble upon this page and share my interest please contact me!
Measured Drawings of Bridge in Plan
Below is a view of the point cloud using the free viewer distributed by Autodesk: RECAP.
Overview of point cloud
and a few videos of the orthophotography:
Orthophotography of Log Structure with additions
Here are two snapshots from some of the orthophotography prepared this summer in an effort to retain access to the historical information embedded in this log structure once it is covered with new cladding and gets a new roof as a part of preservation plan implemented with HistoriCorps.
More information about the project can be found here.
Side View of Structure, as found orthophotography
Partial Facade – Frank Furness 1886
The First Unitarian Church of Philadelphia was designed by Frank Furness in 1886 in Philadelphia, PA. It has a neighboring building directly adjacent to the west and an open alley to the east. This has caused an asymmetrical load on the building’s trusses and has caused the facade at the alley way to bulge out over the years. I was hired to make a drawing of the affected elevation and to make a series of point measurements to gauge the status of the deformation as it is today.
In order to do this work I used a variety of software (for photogrammetry, point cloud creation, point measurement) and hardware (cameras, telescoping tripods, and laser levels, targets). The image above is seen “through the branches” (there is substantial tree cover on the side of the building).
almost full scale crop
crop showing “tree noise”
Post Cards for Craft Morristown 2015
It’s great to see my photo of some glass art by Soloman Solutions used for the Craft Morristown 2015 show.
Thanks to Artrider Productions for including the photo attribution on the postcards!
Since 2009 I’ve done a fair amount of work with aerial photography, all the while continuing to explore architectural photography and photogrammetry while on the ground. I’ve tried in the past with some success to merge the two things but have found the results to be lacking something. That something, I think, is the hyper dense point cloud – and now I have it pretty much figured out.
Below are tow animated GIF images showing first the point cloud describing our local hospital (which I was contracted to cover with aerial photographs a few years back) and the second is a textured 3-D model of the scan.
Its so amazing to think that the flight over this structure can be reconstructed virtually a few years later with even more options to “fly around”…
Dense Point Cloud
Textured 3-D model
Posted in 3-D scanning, 3D scan, aerial photography, photogrammetry, point cloud
Tagged 3-D, 3d, aerial, aerial photo, Photogrammetry, Photography, scan, scanning
Luzerne County Courthouse
East Elevation of the North Carolina State Capitol – Raleigh, NC
I’m still tweaking and updating when I get a chance… Finding some cool graphics to share, like this orthophoto, above and this aerial photo, below: