Efficient watchlist searching with normalized similarity

Methods and systems for face recognition and response include extracting a face image from a video stream. A pre-processed index is searched for a watchlist image that matches the face image, based on a similarity distance that is computed from a normalized similarity score to satisfy metric propert...

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Bibliographic Details
Main Authors Debnath, Biplob, Chakradhar, Srimat
Format Patent
LanguageEnglish
Published 21.03.2023
Subjects
ALARM SYSTEMS
CALCULATING
COMPUTING
COUNTING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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Summary:Methods and systems for face recognition and response include extracting a face image from a video stream. A pre-processed index is searched for a watchlist image that matches the face image, based on a similarity distance that is computed from a normalized similarity score to satisfy metric properties. The index of the watchlist includes similarity distances between face images stored in the watchlist. An action is performed responsive to a determination that the extracted face image matches the watchlist image.
Bibliography:Application Number: US202117197431