First Unitarian Church of Philadelphia

Partial Facade - Frank Furness 1886

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

almost full scale crop

crop showing "tree noise"

crop showing “tree noise”

My report

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Craft Morristown 2015

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!

Aerial Photography > Dense Point Clouds

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

Dense Point Cloud

Textured 3-D model

Textured 3-D model

Orthophotos from a Dense Point Cloud

45 degrees

45 degrees

RCP

RCP

on axis

on axis

45 degrees

45 degrees

on axis

on axis

Luzerne County Courthouse

Luzerne County Courthouse

continued site work…

East Elevation of the North Carolina State Capitol.

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:

Staunton nightlife

Staunton nightlife

Long overdue site construction

Preliminary point cloud depicting the Old Stone House in Newtown (Stephen's City, VA)

Preliminary point cloud depicting the Old Stone House in Newtown (Stephen’s City, VA)

I will be updating and rearranging parts of this website in the coming days. So if you’ve visited here before, please refresh pages to make sure you have the latest versions. Thanks for your patience!

Civil Rights Memorial

The Civil Rights Memorial in Richmond, VA

The Civil Rights Memorial in Richmond, VA

Testing animated GIF

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Enriching HABS documentation with Orthophotography

HYBRIDIZED 00001a 1 When I am hired to prepare a set of documents to describe the existing conditions of buildings I sometimes try to incorporate older drawings and the like. If I am working with original construction drawings it can be very interesting to see how and where the existing structure is different than the one designed. If I am working with measured drawings of unknown provenance it can be very frustrating to see how inaccurate the drawings are! So as a rule, I only deliver measured drawings that I create from my original site work  since its the only way I know that I can really trust the work and stand behind it.

Hybrid Drawing

Hybrid Drawing

Line Drawing

Line Drawing

Realizing how valuable a good set of measured drawings truly is, it is wonderful to consider what a treasure our HABS HAER collections are! These are uniformly drawn to standards generally higher than the profession gets by on, even today. Sometimes I am looking at doing some work on a project and I am fortunate to learn that a HABS set of drawings already exist. This gives me an opportunity to overlay some of my work (with photogrammetrically derived images) onto this “layer” of information in seamless fashion.

Hybrid Drawing

Hybrid Drawing

Line Drawing

Line Drawing

I’ve long done this kind of work with rectified photography in a sort of manual approach. I’m discovering that its equally great to “Hybridize” the HABS line drawings with orthophotography as well (derived from 3-D models derived from a scanning process). The images posted here show a recent look at the Cape Hatteras lighthouse on North Carolina’s Outer Banks. The HABS collection of drawings is very nicely done and available to all to explore through the HABS web site (here). The images posted here show how the line drawings can be built upon with technology available today,  They become the foundational layer of a living document that describes an important piece of architecture in great detail.


 

07hatteras base E

05hatteras base S03hatteras base W01hatteras base N

The Clocktower Building in Staunton, VA

Three views of a model of this iconic corner building

Three views of a model of this iconic corner building

Just a quick share of the results of a test project to evaluate some new technology. Check out the video below to see all three views above in their 3D context.