Video safety detector with projected pattern
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United States of America Patent
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Jan 23, 2007
Issued Date -
N/A
app pub date -
Apr 29, 2000
filing date -
Apr 29, 2000
priority date (Note) -
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Abstract
A two-dimensional (2-D) machine-vision safety-solution involving a method and apparatus for performing high-integrity, high efficiency machine vision. A known structured lighting texture pattern is projected upon a target area. A model image of the pattern on an empty target field is stored during an initial training step. The machine vision safety solution digitally interprets a camera image of the light reflected by the objects in the target area to detect and characterize a pattern in the image. The pattern characterization is then processed to determine if a distortion of the characterization factors is larger than a predetermined threshold, and results in an alarm condition.
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