Software Programs Derive Measurements from Photographs
- Saturday, 01 January 2011
Even under the most unfortunate circumstances, NASA continues on a path of innovation. After the Space Shuttle Columbia reentered the atmosphere on February 1, 2003, it experienced a catastrophic failure, and the entire crew and vehicle were lost. For the two weeks prior to the accident, Columbia STS-107 was on a mission to perform physical, life, and space sciences research in the unique environment of microgravity.
Following the accident, the remaining shuttles— Endeavor, Atlantis, and Discovery—were grounded, and an intense investigation ensued. The Columbia Accident Investigation Board spent nearly 7 months examining the cause of the accident and determining what would ensure a safe return to flight. To this end, investigators performed an extensive review down five analytic paths: aerodynamic, thermodynamic, sensor data timeline, debris reconstruction, and imaging.
As part of the evaluation of all the available imagery from Columbia’s ascent, orbit, and entry, investigators needed a new method for analyzing still video images to determine the size of the material that fell from Columbia, as well as the distance that the material traveled. John Lane, a scientist at Kennedy Space Center, devised a software program to calculate the unknown dimension of the material in the images, and soon after the investigation was complete, continued to enhance the technology. Eventually, the program that assisted in the Columbia investigation became available for licensing.
In 2008, DigiContractor Corporation of Tarzana, California, learned about the NASA software as well as an additional, related NASA program, and obtained a license for each technology. Paul Minor, founder of DigiContractor, wanted to use the NASA technology to enhance the capabilities of an existing product line called uPhotoMeasure.
Originally developed to measure the dimensions of items in a photograph for construction purposes, uPhotoMeasure can be applied to calculate measurements from a photo for a variety of applications—from landscaping or flooring projects to crime scenes or auto accidents.
“We dissected the NASA version and then we incorporated some of that technology into ours. It’s a benefit to our algorithms and gives an added level of accuracy,” says Minor. “NASA partnerships are beneficial because they provide access to the technologies that are being developed at the Government level. They’re not in business to take these technologies to market, but we are.”
With a background in general contracting, Minor had become accustomed to estimating measurements from a photograph, but he wanted to apply a software program that could calculate accurate measurements from a photo. After working with a friend who helped him design the software, Minor tested and refined the technology. By 2004, he formed DigiContractor with funding from family and friends.
Over the next several years, the software was modified and updated, and now includes the NASA technology. According to the company, if used correctly, uPhotoMeasure can make measurements with at least 95-percent accuracy. Today, the software has close to 5,000 users who have downloaded the program to their computers or access the software on the Internet.