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Depth reconstruction uncertainty analysis and improvement: The dithering approach
Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.ORCID iD: 0000-0003-4327-117X
Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
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2010 (English)In: Image and Vision Computing, ISSN 0262-8856, E-ISSN 1872-8138, Vol. 29, no 9, 1377-1385 p.Article in journal (Refereed) Published
Abstract [en]

The depth spatial quantization uncertainty is one of the factors which influence the depth reconstruction accuracy caused by a discrete sensor. This paper discusses the quantization uncertainty distribution, introduces a mathematical model of the uncertainty interval range, and analyzes the movements of the sensors in an Intelligent Vision Agent System. Such a system makes use of multiple sensors which control the deployment and autonomous servo of the system. This paper proposes a dithering algorithm which reduces the depth reconstruction uncertainty. The algorithm assures high accuracy from a few images taken by low-resolution sensors. The dither signal is estimated and then generated through an analysis of the iso-disparity planes. The signal allows for control of the camera movement. The proposed approach is validated and compared with a direct triangulation method. The simulation results are reported in terms of depth reconstruction error statistics. The physical experiment shows that the dithering method reduces the depth reconstruction error.

Place, publisher, year, edition, pages
Elsevier , 2010. Vol. 29, no 9, 1377-1385 p.
Keyword [en]
Depth reconstruction, Dither, Iso-disparity planes, Quantization uncertainty
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-7772DOI: 10.1016/j.imavis.2010.03.003ISI: 000279506700005Local ID: oai:bth.se:forskinfo8EF778066FADD52BC12577580043C83EOAI: oai:DiVA.org:bth-7772DiVA: diva2:835434
Available from: 2012-09-18 Created: 2010-07-06 Last updated: 2016-09-20Bibliographically approved

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Khatibi, SiamakKulesza, Wlodek

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
  • Other style
More styles
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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  • asciidoc
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