<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>J.D. McLaurin</dc:creator>
  <dc:date>1969</dc:date>
  <dc:description>This program determines coordinates of the perspective center of a stereoplotter projector by bringing two bundles of rays into a best fit coincidence in a space-resection solution. One of the bundles of rays is defined by the perspective center and the grid intersections on a grid plate. The other bundle of rays is defined by the perspective center and the projected grid intersections in the model space. &#13;
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The program is used with the independent-model method of semianalytlcal aerotriangulation, which requires the coordinates of perspective centers. It may also be used in checking the calibration of stereoplotters.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr70209</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey, Topographic Division,</dc:publisher>
  <dc:title>Perspective center determination</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>