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Method and device for detecting the position of an object

  • US 4,435,835 A
  • Filed: 03/24/1981
  • Issued: 03/06/1984
  • Est. Priority Date: 03/24/1980
  • Status: Expired due to Term
First Claim
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1. A position detecting method for detecting the position of an object by scanning of the object with an image pickup device comprising:

  • storing in advance of scanning of the object positional information of at least one type of standard pattern which exists in a whole region including all pickup regions scanned by the image pickup device at respective supply deviations of the object, said whole region being composed of a plurality of said pickup regions;

    scanning a pickup region by the image pickup device at a supply position of the object;

    extracting positional information of the at least one standard pattern from the image obtained by the scanning of said pickup region; and

    comparing the positional information extracted from the scanned pickup region with positional information of the whole region stored in advance of the scanning of the object to determine which part of the whole region the said pickup region lies in and to detect the position of the object from positional relationship of said scanned pickup region within the whole region.

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