A British research team aims to prove that 3-D technology could help Homeland Security discover more suspicious activity. Surveillance systems usually rely on 2-D images. Now, a team from England’s Centre for Machine Vision is building a system to extract high resolution 3-D video from a distance of several hundred feet. Professor Melvyn Smith is director of the Centre for Machine Vision in the Bristol Robotic Laboratory. He joined Tom Temin on the Federal Drive to discuss what prompted him to conduct this research.