Fringe Projection Based Real-Time Three-Dimensional Measurement System

Real-time three-dimensional (3D) shape measurement is widely used in science and engineering fields. Many optical methods [1] have been developed to achieve the goal of 3D shape measurement. With the advantage of high accuracy and easy implementation, fringe projection profilometry is becoming more and more popular. Karpinsky N and Zhang S [2] proposed a real-time high-resolution method to obtain precise 3D shape information based on looping to project three fringe patterns and three-step phase-shifting algorithm. But the synchronization between the cameras for image capturing and the projector for fringe projecting pattern is hard to control.