Apparatus and methods for determining the three-dimensional shape of an object using active illumination and relative blurring in two-images due to defocus
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United States of America Patent
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May 8, 2001
Issued Date -
N/A
app pub date -
Jul 18, 1997
filing date -
Jun 7, 1995
priority date (Note) -
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Abstract
A method and apparatus for mapping depth of an object (22) in a preferred arrangement uses a projected light pattern to provide a selected texture to the object (22) along the optical axis (24) of observation. An imaging system senses (32, 34) first and second images of the object (22) with the projected light pattern and compares the defocused of the projected pattern in the images to determine relative depth of elemental portions of the object (22).
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Cited Art Landscape
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