REGIONALIZED CHANGE DETECTION USING DIGITAL FINGERPRINTS

REGIONALIZED CHANGE DETECTION USING DIGITAL FINGERPRINTS

A system and method detect a local change to a region of an object using digital fingerprints of the object acquired at a reference time and at a test time. The two digital fingerprints may be used to authenticate the object, a match density is calculated from a comparison of corresponding portions...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Ross, David Justin, Shannon, Will Charles, Qian, Cheng
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A system and method detect a local change to a region of an object using digital fingerprints of the object acquired at a reference time and at a test time. The two digital fingerprints may be used to authenticate the object, a match density is calculated from a comparison of corresponding portions of the digital fingerprints and the match density is compared to a threshold so that when the match density is below the threshold, a region where a component on the object has been added, subtracted, repositioned, substituted, or altered is identified.