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Kim, Seong-Jin
Bio-inspired Microsystems Lab (BiML)
Research Interests
  • Integrated analog-mixed signal circuit design, semiconductor sensor interface circuits

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A 3-D Camera With Adaptable Background Light Suppression Using Pixel-Binning and Super-Resolution

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Title
A 3-D Camera With Adaptable Background Light Suppression Using Pixel-Binning and Super-Resolution
Author
Cho, JihyunChoi, JaehyukSeong-Jin KimShin, JungsoonPark, SeokjunKim, James D. K.Yoon, Euisik
Issue Date
2014-10
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.49, no.10, pp.2319 - 2332
Abstract
This paper presents a CMOS time-of-flight (TOF) 3-D camera employing a column-level background light (BGL) suppression scheme for high-resolution outdoor imaging. The use of the column-level approach minimizes a pixel size for high-density pixel arrays. Pixel-binning and super-resolution can be adaptably applied for an optimal BGL suppression at given spatiotemporal resolutions. A prototype sensor has been fabricated by using 0.11 μm CMOS processes. The sensor achieved a fill factor of 24% in a pixel pitch of 5.9 μm which is the smallest among all the reported TOF cameras up to date. Measurement results showed the temporal noise of 1.47 cm-rms with a 100 ms integration time at a demodulation frequency of 12.5 MHz using a white target at 1 m distance. The non-linearity was measured as 1% over the range of 0.75 m ~ 4 m. The BGL suppression over 100 klx was achieved from indoor and outdoor experiments, while the BGL-induced offset was maintained less than 2.6 cm under 0 ~ 100 klx.
URI
https://scholarworks.unist.ac.kr/handle/201301/12286
URL
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6873706
DOI
10.1109/JSSC.2014.2340377
ISSN
0018-9200
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