3D Shape Measurement of Specular Surface Based on Structured Light Coding Method
Present a novel method for 3D shape measurement of specular surface based on structured light coding method. Coded fringe pattern are projected onto the high reflected surface of the measured object. The deflection fringe pattern that modulated by the object surface are captured by the CCD camera. Central perturbation phase-shift technology is adopted to fast retrieve the phase distribution on the deflection fringe pattern. Then the slope information can be obtained by analyzing the relationship between the phase deflection and the slope of the object surface. By combining the character of the phase-shifting fringe pattern and digital image processing technologies the boundary of the measured object can be picked up from the background before reconstruction, which can reduce the quantities of data to be processed and advance the reconstruction precision at the boundary. The improved wave-front reconstruction method is used to reconstruct the surface. With the application of this technology the 3D shape of specular surface can be precisely reconstructed.
structured light coding specular surface central perturbation phase unwrapping wave-front reconstruction
Shujian Han Shugui Liu Lishuan Ji Shaohui Li Xiaojie Zhang Hongwei Zhang
State Key Laboratory of Precision Measuring Technology & Instruments Tianjin University, 300072 Tianjin, China
国际会议
2012 International Conference on Optoelectronics and Microelectronics(2012光电子与微电子国际学术会议 2012 ICOM)
长春
英文
565-569
2012-08-23（万方平台首次上网日期，不代表论文的发表时间）