Comparison of Multi-frequency Phase Unwrapping Algorithm for Shape Measurement Using Digital Fringe Projection

摘要：

As technology development, projected digital fringe pattern is widely used in measuring three- dimensional (3D) shape, even in the presence of surface discontinuities. This paper investigates the reliability and accuracy of two multi-frequency phase unwrapping algorithms by experimental means. The first, which unwraps through a sequence of phase maps produced with exponentially change in spatial frequency with time, is found to be less robust and accuracy than the second, which only use three different frequency to beat new frequency for unwrapping the phase. Through experiment, the best frequency, adjacent ratio for the first method and frequency difference for the second method are proposed for the high efficiency and accuracy measurement.

关键词： digital fringe pattern shape measurement multi-frequency phase unwrapping

作者: W.T. He X.L. Meng Y.Y. Guo C. Zhao

作者单位: Modern Manufacture Engineering Center, Heilongjiang Institute of Science and Technology,Harbin, 1500 Center for Engineering Training and Basic Experimentation, Heilongjiang Institute of Science andTech

会议类型: 国际会议

会议名称: The 4th International Conference on High Speed Machining(第四届高速加工国际会议 ICHSM2010)

会议地点: 武汉

会议语种:英文

页码: 258-262

在线出版日期: 2011-05-28（万方平台首次上网日期，不代表论文的发表时间）