Dynamic projection theory for fringe projection profilometry

作者：Sheng, Hong; Xu, Jing^*; Zhang, Song

来源：Applied Optics, 2017, 56(30): 8452-8460.

DOI：10.1364/AO.56.008452

• SURFACE-SHAPE MEASUREMENT
• STRUCTURED LIGHT
• CALIBRATION METHOD
• MEASUREMENT SYSTEM
• VISION SENSORS
• PATTERNS
• TRACKING
• OBJECTS

Fringe projection profilometry (FPP) has been widely used for three-dimensional reconstruction, surface measurement, and reverse engineering. However, FPP is prone to overexposure if objects have a wide range of reflectance. In this paper, we propose a dynamic projection theory based on FPP to rapidly measure the overexposed region with an attempt to conquer this challenge. This theory modifies the projected fringe image to the next better measurement based on the feedback provided by the previously captured image intensity. Experiments demonstrated that the number of overexposed points can be drastically reduced after one or two iterations. Compared with the state-of-the-art methods, our proposed dynamic projection theory measures the overexposed region quickly and effectively and, thus, broadens the applications of FPP.

• 出版日期2017-10-20
• 单位清华大学