Lissajous scanned variable structured illumination for dynamic stereo depth map

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Structured illumination plays an important role in advanced photographic and microscopic imaging applications. Here we report variable structured illumination (VSI) using Lissajous scanning techniques. The variable structured illumination module comprises Lissajous scanning micromirror and fiber-based diode pumped solid state (DPSS) laser with intensity modulation, combined with a stereo camera for dynamic stereo depth map. The micromirror projects static and discrete patterns by modulating the intensity of a laser beam at the least common multiple (LCM) of two scanning frequencies. The pattern density is increased by either decreasing the greatest common divisor (GCD) of scanning frequencies or decreasing the duty rate of the laser modulation. The scanning amplitude also controls the field-of-view (FOV) for the exact illumination of a target object for dynamic stereo depth map. The variable structured illumination module provides a new route for advanced imaging applications such as high-quality depth map, super-resolution, or motion recognition.
Publisher
OPTICAL SOC AMER
Issue Date
2020-05
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.28, no.10, pp.15173 - 15180

ISSN
1094-4087
DOI
10.1364/OE.392953
URI
http://hdl.handle.net/10203/275188
Appears in Collection
BiS-Journal Papers(저널논문)
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