A traffic survey system is described in which an aerial photo survey transparency is first made of a significant survey area. The transparency is then optically scanned to check the position and size of vehicles on roadways in the area. By computer control comparison with a reference transparency wherein areas other than roadways are made opaque and roadways are made clear, scanning is directed solely to roadway regions. Vehicle size analysis is accomplished by means of discrete holographic filters corresponding to selected size vehicles.


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    Titel :

    Traffic Survey System


    Beteiligte:
    J. H. Kerr (Autor:in)

    Erscheinungsdatum :

    1974


    Format / Umfang :

    16 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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