title: GPU-assisted high-resolution, real-time 3-D shape measurement.
abstract: This paper describes a Graphics Processing Unit (GPU)-assisted real-time three-dimensional shape measurement system. Our experiments demonstrated that the absolute coordinates calculation and rendering speed of a GPU is more than four times faster than that of a dual CPU workstation with the same graphics card. By implementing the GPU into our system, we realized simultaneous absolute coordinate acquisition, reconstruction and display at 30 frames per second with a resolution of approximately 266K points per frame. Moreover, a 2+1 phase-shifting algorithm was employed to alleviate the measurement error caused by motion. Applications of the system include medical imaging, manufacturing, entertainment, and security.
authors.forename: Song
authors.initials: S
authors.lastname: Zhang
authors.forename: Dale
authors.initials: D
authors.lastname: Royer
authors.forename: Shing-Tung
authors.initials: ST
authors.lastname: Yau