Method and apparatus for sensing and identifying information...

Details Method and apparatus for sensing and identifying information... Method and apparatus for sensing and identifying information...

G - Physics

01

S

343/5, 340/124.3

G01S 17/58 (2006.01) B61L 25/04 (2006.01) G06K 7/10 (2006.01) G06K 19/06 (2006.01)

Patent

CA 1190624

ABSTRACT A method and apparatus for extracting information from an object within a large interrogation zone by utilizing a retroreflective backing to define the location of the object and/or information on the object, and an apparatus designed to eliminate from consideration all specularly and diffusely reflected light otherwise present within the zone and thereby isolate the retroreflective backing within the zone. The apparatus then extracts the information which was defined by the retroreflective backing.

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