Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-04-11
2006-04-11
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S559400
Reexamination Certificate
active
07026600
ABSTRACT:
A method of identifying an object in a laser beam illuminated scene based on material types comprises the steps of: emitting a pulsed beam of laser energy, each beam pulse comprising a plurality of different discrete wavelength emission components; illuminating a predetermined scene with the pulsed beam; receiving return laser pulses from objects within the illuminated scene, each return laser pulse comprising return components corresponding to the plurality of different discrete wavelength emission components; determining spectral reflectance values for the plurality of return components of each return laser pulse; determining a material type for each return laser pulse of the illuminated scene based on the plurality of reflectance values of the corresponding return pulse; indexing each determined material type to a position in the illuminated scene; and identifying an object in the illuminated scene based on material types and indexed positions thereof in the scene. A counterpart system for carrying out the method is also disclosed.
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European Seach Report from European patent application no. EP05251141.
Jamieson James R.
Meneely Clinton T.
Ray Mark D.
Calfee Halter & Griswold LLP
Hernandez, Esq. Peter
Le Que T.
Rosemount Aerospace Inc.
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