Software Provides 3D CAD From Ordinary Photos

摘要

When Shan Pehlman consults with oil refineries on replacing aging piping systems, he might et as-built drawings of the old infrastructure. Then again, he might not. Even if he does, he generally considers them poor counterfeits for the real-world fittings. "Everyone knows as-built drawings are just an imperfect world," says the GDI Corporation design engineer. "With equipment that is 30 or 40 years old and the modifications thrown in, the drawings are not going to match what's there. Everyone involved realizes this is a major difficulty, so they hire an outside firm to take care of it."