Infrared and Laser Engineering, Volume. 47, Issue 8, 826002(2018)
Phase unwrapping based on two types of stair-mode
In order to increase the accuracy and robustness of phase unwrapping, a novel stair phase unwrapping algorithm was proposed. This algorithm combined the gray and phase coding to unwrap the phase. The algorithm based on gray can project different gray intensities to determine different levels. However, when the period was small, there was little difference between intensities which will generate phase errors. Phase unwrapping based on phase had great robustness but it occupied the computation. Compared with traditional method, the creative point of this method was that it designed two encoding methods for phase unwrapping. The first type of pattern was based on grey information that separated the global modulation grating. The second type of pattern was based on phase coding. The experimental results show that the algorithm can determine the level of the wrapped phase accurately and the 3D information can be obtained quickly.
Get Citation
Copy Citation Text
Lu Feng, Wu Chengdong, Jia Tong, Wen Shiguang. Phase unwrapping based on two types of stair-mode[J]. Infrared and Laser Engineering, 2018, 47(8): 826002
Category: 信息获取与辨识
Received: Mar. 5, 2018
Accepted: Apr. 20, 2018
Published Online: Aug. 29, 2018
The Author Email: