Method and apparatus of image mensuration with selectively visible and invisible reseau grid marks
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United States of America Patent
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Aug 13, 1991
Issued Date -
N/A
app pub date -
Feb 27, 1989
filing date -
Aug 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method of this invention includes the steps of positioning a reseau with grid marks on the object and sequentially illuminating the grid marks separate from the object and illuminating the object separate from the grid marks or in a manner that the grid marks are not visible with the object. The image of the grid mark positions, when illuminated, are digitized and stored in computer memory and correlated with the image of the object when it is illuminated and digitized. The scale of the image can also be correlated to the scale of the grid marks.
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Cited Art Landscape
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