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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 3 — Jan. 20, 2011
  • pp: 356–359

Research on coding and decoding method for digital levels

Li-fen Tu and Si-dong Zhong  »View Author Affiliations


Applied Optics, Vol. 50, Issue 3, pp. 356-359 (2011)
http://dx.doi.org/10.1364/AO.50.000356


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Abstract

A new coding and decoding method for digital levels is proposed. It is based on an area-array CCD sensor and adopts mixed coding technology. By taking advantage of redundant information in a digital image signal, the contradiction that the field of view and image resolution restrict each other in a digital level measurement is overcome, and the geodetic leveling becomes easier. The experimental results demonstrate that the uncertainty of measurement is 1 mm when the measuring range is between 2 m and 100 m , which can meet practical needs.

© 2011 Optical Society of America

OCIS Codes
(110.2960) Imaging systems : Image analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.4640) Instrumentation, measurement, and metrology : Optical instruments

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: August 19, 2010
Revised Manuscript: November 20, 2010
Manuscript Accepted: December 8, 2010
Published: January 17, 2011

Citation
Li-fen Tu and Si-dong Zhong, "Research on coding and decoding method for digital levels," Appl. Opt. 50, 356-359 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-3-356

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