3D shape measurement of macroscopic objects in digital off-axis holography using structured illumination.
We propose what we believe to be a novel approach to measure the 3D shape of arbitrary diffuse-reflecting macroscopic objects in holographic setups. Using a standard holographic setup, a second CCD and a liquid-crystal-on-silicon spatial light modulator to modulate the object wave, the method yields a dense 3D point cloud of an object or a scene. The calibration process is presented, and first quantitative results of a shape measurement are shown and discussed. Furthermore, a shape measurement of a complex object is displayed to demonstrate its universal use.
Grosse
Marcus
M
Institute of Applied Optics, University of Jena, Froebelstieg 1, 07743 Jena, Germany. marcus.g@uni-jena.de
Buehl
Johannes
J
Babovsky
Holger
H
Kiessling
Armin
A
Kowarschik
Richard
R