Image analysis – Applications
Reexamination Certificate
2005-05-17
2005-05-17
Ahmed, Samir (Department: 2623)
Image analysis
Applications
C409S081000, C076S110000, C358S540000
Reexamination Certificate
active
06895100
ABSTRACT:
A method to identify a key profile, comprising:illuminating with two laminar beams emitted by two laser light sources said two sides of said shank of a key driven to move axially relative to said beams,reading with two video cameras, fixed relative to said sources and having their optical axis inclined to said planes in which said light beams lie, said two light profiles formed by said laminar beams striking said two surfaces of said shank of said keys,digitizing said optical images read in this manner, to obtain two sequences of signals representative of said profiles of said two lateral surface portions of said key, as instantaneously illuminated by said laminar beams and read by said video cameras,reconstructing from said signals, by means of a processor unit, a signal representative of the entire key profile, andcomparing said thus reconstructed signal with said signal representative of profiles stored in said processor unit to obtain data identifying said profile of said read key.
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Casagrande Ettore
Foscan Eros
Pacenzia Stefano
Ahmed Samir
Bhatnagar Anand
Birch & Stewart Kolasch & Birch, LLP
Silca S.p.A.
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