Document Type
Article
Publication Date
3-11-2013
Journal or Book Title
Optics Express
Volume
21
Issue
5
First Page
5822
Last Page
5832
DOI
10.1364/OE.21.005822
Abstract
This paper presents a two-frequency binary phase-shifting technique to measure three-dimensional (3D) absolute shape of beating rabbit hearts. Due to the low contrast of the cardiac surface, the projector and the camera must remain focused, which poses challenges for any existing binary method where the measurement accuracy is low. To conquer this challenge, this paper proposes to utilize the optimal pulse width modulation (OPWM) technique to generate high-frequency fringe patterns, and the error-diffusion dithering technique to produce low-frequency fringe patterns. Furthermore, this paper will show that fringe patterns produced with blue light provide the best quality measurements compared to fringe patterns generated with red or green light; and the minimum data acquisition speed for high quality measurements is around 800 Hz for a rabbit heart beating at 180 beats per minute.
Rights
This paper was published in Optics Express 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://dx.doi.org/10.1364/OE.21.005822. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Copyright Owner
Optical Society of America
Copyright Date
2013
Language
en
File Format
application/pdf
Recommended Citation
Wang, Yajun; Laughner, Jacob I.; Efimov, Igor R.; and Zhang, Song, "3D absolute shape measurement of live rabbit hearts with a superfast two-frequency phase-shifting technique" (2013). Mechanical Engineering Publications. 75.
https://lib.dr.iastate.edu/me_pubs/75
Comments
This article is from Optics Express 21 (2013): 5822–5832, doi:10.1364/OE.21.005822. Posted with permission.