Abstract

We present a 3-D shape-measurement technique using a defocused projector. The ideal sinusoidal fringe patterns are generated by defocusing binary structured patterns, and the phase shift is realized by shifting the binary patterns spatially. Because this technique does not require calibration of the gamma of the projector, it is easy to implement and thus is promising for developing flexible 3-D shape measurement systems using digital video projectors.

© 2009 Optical Society of America

Flexible 3D shape measurement using projector defocusing: extended measurement range

Song Zhang
Opt. Lett. 35(7) 934-936 (2010)

Ultrafast 3-D shape measurement with an off-the-shelf DLP projector

Yuanzheng Gong and Song Zhang
Opt. Express 18(19) 19743-19754 (2010)

Phase error compensation for three-dimensional shape measurement with projector defocusing

Ying Xu, Laura Ekstrand, Junfei Dai, and Song Zhang
Appl. Opt. 50(17) 2572-2581 (2011)

Superfast phase-shifting method for 3-D shape measurement

Song Zhang, Daniel Van Der Weide, and James Oliver
Opt. Express 18(9) 9684-9689 (2010)

Optimal pulse width modulation for sinusoidal fringe generation with projector defocusing

Yajun Wang and Song Zhang
Opt. Lett. 35(24) 4121-4123 (2010)