Article
Multilevel quality-guided phase unwrapping algorithm for real-time three-dimensional shape reconstruction
Applied Optics
(2007)
Abstract
A multilevel quality-guided phase unwrapping algorithm for real-time 3D shape measurement is presented. The quality map is generated from the gradient of the phase map. Multilevel thresholds are used to unwrap the phase level by level. Within the data points in each level, a fast scan-line algorithm is employed. The processing time of this algorithm is approximately 18.3 ms for an image size of 640×480 pixels in an ordinary computer. We demonstrate that this algorithm can be implemented into our real-time 3D shape measurement system for real-time 3D reconstruction. Experiments show that this algorithm improves the previous scan-line phase unwrapping algorithm significantly although it reduces its processing speed slightly.
Publication Date
2007
Publisher Statement
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-46-1-50. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Citation Information
Song Zhang, Xiaolin Li and Shing-Tung Yau. "Multilevel quality-guided phase unwrapping algorithm for real-time three-dimensional shape reconstruction" Applied Optics Vol. 46 Iss. 1 (2007) Available at: http://works.bepress.com/song_zhang/43/