NDLI: A LED-array-based range imaging system with Time-to-Digital Converter for 3D shape acquisition

Content Provider	IEEE Xplore Digital Library
Author	Huanqin Wang Deyi Kong Jun Xu Deyong He Tianpeng Zhao Hai Ming
Copyright Year	2010
Description	Author affiliation: The State Key Laboratory of Transducer Technology, Institute of Intelligent Machines, CAS, Hefei, China (Huanqin Wang; Deyi Kong) \|\| Department of Physics, University of Science and Technology of China, Hefei, China (Jun Xu; Deyong He; Tianpeng Zhao; Hai Ming)
Abstract	A LED-array-based range imaging system is presented for capturing the depth information of three-dimensional (3D) objects. The range image is obtained by time-division electronic scanning of the LED Time-of-Flight (TOF) range finders in array, and no complex mechanical scanning is needed. Millimeter ranging resolution can be reached thanks to the use of Time-to-Digital Converter (TDC) with picosecond resolution and some special analog phased-lock loop (APLL) filter techniques. By close packaging LED die array, a high spatial resolution and large pixels version of the proposed system can be achieved easily. Experimental tests for evaluation of the system performance are adequately described. The results show the depth resolution can be better than 5mm in the range of 300–1000 mm, and a higher resolution 0.5 mm can be achieved when the measurement time of a depth pixel is extended to 5s, which is sufficient for many applications, including computer vision, machine automation, 3D object recognition, reverse engineering and virtual reality.
Starting Page	2003
Ending Page	2007
File Size	513279
Page Count	5
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5648188
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Range imaging Image resolution TDC TOF range finder LED array Imaging Light emitting diodes Distance measurement Three dimensional displays 3D shape acquisition Arrays Signal resolution
Content Type	Text
Resource Type	Article

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