Invention Grant
US08180174B2 Means for using microstructure of materials surface as a unique identifier
有权
使用材料表面微观结构作为唯一标识符的手段
- Patent Title: Means for using microstructure of materials surface as a unique identifier
- Patent Title (中): 使用材料表面微观结构作为唯一标识符的手段
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Application No.: US12041790Application Date: 2008-03-04
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Publication No.: US08180174B2Publication Date: 2012-05-15
- Inventor: Celine Di Venuto , Martin Kutter , Frederic Jordan
- Applicant: Celine Di Venuto , Martin Kutter , Frederic Jordan
- Applicant Address: CH Vevey
- Assignee: Alpvision S.A.
- Current Assignee: Alpvision S.A.
- Current Assignee Address: CH Vevey
- Agency: DLA Piper LLP US
- Priority: EP05108123 20050905
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06K9/62 ; G06K9/64

Abstract:
A method and apparatus for the visual identification of materials for tracking an object comprises parameter setting, acquisition and identification phases. The parameter setting phase comprises the steps of defining acquisition parameters for the objects. The acquisition phase comprises the steps of digitally acquiring two-dimensional template image of an object, applying a flattening function and generating downsampled template version of the flattened template and storing it in a reference database with the flattened template. The identification phase comprises the steps of digitally acquiring a snapshot image, applying the flattening function and generating one downsampled version, cross-correlating the downsampled version of the flattened snapshot with the corresponding downsampled templates of the reference database, and selecting templates according to the value of the signal to noise ratio, for the selected templates, cross-correlating the flattened snapshot image with the reference flattened template, and identifying the object by finding the best corresponding template.
Public/Granted literature
- US20080219503A1 MEANS FOR USING MICROSTRUCTURE OF MATERIALS SURFACE AS A UNIQUE IDENTIFIER Public/Granted day:2008-09-11
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