NDLI: Object model creation from multiple range images: acquisition, calibration, model building and verification

Content Provider	IEEE Xplore Digital Library
Author	Beraldin, J.-A. Cournoyer, L. Rioux, M. Blais, F. El-Hakim, S.F. Godin, G.
Copyright Year	1997
Description	Author affiliation: Inst. for Inf. Technol., Nat. Res. Council of Canada, Ottawa, Ont., Canada (Beraldin, J.-A.)
Abstract	This paper demonstrates the accuracy of a prototype Laser Range Camera (LRC) developed at the National Research Council of Canada for the creation of models of real objects. A laser survey performed in collaboration with the Canadian Space Agency and NASA is used as a test case. The object selected for this particular test case is the Orbiter Docking System (ODS) located at the Kennedy Space Center, Florida. During the laser survey, 128 range (and registered intensity) images were acquired all around the ODS. These images were then processed in our laboratory. A full model of the top portion of the ODS was created along with an almost complete model of the ODS. The ODS has a diameter of 1.6 m and a height of 3.9 m. Targets mounted on the top portion of the ODS were used to assess the accuracy of the calibration and of the image registration process. These targets were measured with a network of theodolites a day prior to the laser survey and used as a reference. With the current calibration and range image registration techniques, an accuracy better than 0.25 mm in X and Y, and, 0.80 mm in Z was achieved. These results compare favorably with the single point accuracy obtained after calibration, i.e., about 0.25 mm in X and Y, and, 0.50 mm in Z. These figures and others should testify on the usefulness of a LRC for accurate model building.
Starting Page	326
Ending Page	333
File Size	1306840
Page Count	8
File Format	PDF
ISBN	0818679433
DOI	10.1109/IM.1997.603883
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-12
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser modes Calibration Testing Image registration Prototypes Cameras Councils Performance evaluation Collaboration NASA
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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