A low-power structured light sensor for outdoor scene reconstruction and dominant material identification

We introduce a compact structured light device that utilizes a commercially available MEMS mirror-enabled hand-held laser projector. Without complex re-engineering, we show how to exploit the projector's high-speed MEMS mirror motion and laser light-sources to suppress ambient illumination, ena...

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Bibliographic Details
Main Authors: Mertz, C., Koppal, S. J., Sia, S., Narasimhan, S.
Format: Conference Proceeding
Language:English
Subjects:
Glass
Image reconstruction
Lighting
Mirrors
Robot sensing systems
Visualization
Online Access:Request full text
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Description
Summary:We introduce a compact structured light device that utilizes a commercially available MEMS mirror-enabled hand-held laser projector. Without complex re-engineering, we show how to exploit the projector's high-speed MEMS mirror motion and laser light-sources to suppress ambient illumination, enabling low-cost and low-power reconstruction of outdoor scenes in sunlight. We discuss how the line-striping acts as a kind of "light-probe", creating distinctive patterns of light scattered by different types of materials. We investigate visual features that can be computed from these patterns and can reliably identify the dominant material characteristic of a scene, i.e. where most of the objects consist of either diffuse (wood), translucent (wax), reflective (metal) or transparent (glass) materials.
ISSN:2160-7508
2160-7516
DOI:10.1109/CVPRW.2012.6239194