Acquisition and processing of range data using a laser scanner-based 3-D vision system

I. Moring, H. Ailisto, T. Heikkinen, A. Kilpelä, R. Myllylä, M. Pietikäinen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    11 Citations (Scopus)

    Abstract

    In our paper we describe a 3-D vision system designed and constructed at the Technical Research Centre of Finland in co-operation with the University of Oulu. The main application fields our 3-D vision system was developed for are geometric measurements of large objects and manipulator and robot control tasks. It seems to be potential in automatic vehicle guidance applications, too. The system has now been operative for about one year and its performance has been extensively tested. Recently we have started a field test phase to evaluate its performance in real industrial tasks and environments. The system consists of three main units: the range finder, the scanner and the computer. The range finder is based on the direct measurement of the time-of-flight of a laser pulse. The time-interval between the transmitted and the received light pulses is converted into a continuous analog voltage, which is amplified, filtered and offset-corrected to produce the range information. The scanner consists of two mirrors driven by moving iron galvanometers. This system is controlled by servo amplifiers. The computer unit controls the scanner, transforms the measured coordinates into a cartesian coordinate system and serves as a user interface and postprocessing environment. Methods for segmenting the range image into a higher level description have been developed. The description consists of planar and curved surfaces and their features and relations. Parametric surface representations based on the Ferguson surface patch are studied, too.

    Original languageEnglish
    Title of host publicationAdvances in Intelligent Robotics Systems
    Subtitle of host publicationOptics, Illumination, and Image Sensing for Machine Vision II
    Pages174-183
    Number of pages10
    DOIs
    Publication statusPublished - 12 Feb 1988
    MoE publication typeA4 Article in a conference publication
    EventAdvances in Intelligent Robotics Systems: Optics, Illumination, and Image Sensing for Machine Vision II - Cambridge, United States
    Duration: 2 Nov 19876 Nov 1987

    Publication series

    SeriesProceedings of SPIE
    Volume850
    ISSN0277-786X

    Conference

    ConferenceAdvances in Intelligent Robotics Systems
    Country/TerritoryUnited States
    CityCambridge
    Period2/11/876/11/87

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