基于正弦条纹投影的三维传感及其去包裹处理

3-D Sensing Using Sinusoidal Fringe Projection and Phase Unwrapping

采用液晶显示 (LCD)投影仪产生的正弦条纹 ,用四步相移技术对物体进行了三维形貌测量 ,重点讨论了去包裹问题 ,对大面积相位间断区的模板标识及含离散相位间断点条纹图的去包裹问题提出了新的处理方法 。

With four-step phase-shifting method the 3-D surface profile of a coin was measured using sinusoidal fringe projection produced by a liquid crystal display (LCD) projector. The phase unwrapping problems are discussed. A new method for detection of the phase discontinuity area and a new technique for phase unwrapping are presented. The experimental results are given.