Absolute phase map recovery of two fringe patterns with flexible selection of fringe wavelengths

Authors

Jiale Long, Huazhong University of Science and Technology
Jiangtao Xi, University of WollongongFollow
Ming Zhu, Huazhong University of Science and Technology
Wenqing Cheng, Huazhong University of Science and Technology
Rui Cheng, Huazhong University of Science and Technology
Zhongwei Li, Huazhong University of Science and Technology
Yusheng Shi, Huazhong University of Science and Technology

RIS ID

88603

Publication Details

Long, J., Xi, J., Zhu, M., Cheng, W., Cheng, R., Li, Z. & Shi, Y. (2014). Absolute phase map recovery of two fringe patterns with flexible selection of fringe wavelengths. Applied Optics, 53 (9), 1794-1801.

Abstract

A novel approach is proposed to unwrap the phase maps of two fringe patterns in fringe pattern projection-based profilometry. In contrast to existing techniques, where spatial frequencies (i.e., the number of fringes on a pattern) of the two fringe patterns must be integers and coprime, the proposed method is applicable for any two fringe patterns with different fringe wavelengths (i.e., the number of pixels in a fringe) and thus provides more flexibility in the use of fringe patterns. Moreover, compared to the existing techniques, the proposed method is simpler in its implementation and has better antierror capability. Theoretical analysis and experiment results are presented to confirm the effectiveness of the proposed method.