发明名称 |
METHODS FOR IDENTIFYING IMAGING DEVICES AND CLASSIFYING IMAGES ACQUIRED BY UNKNOWN IMAGING DEVICES |
摘要 |
A method of classifying an image taken by an image capture device, the method comprising the steps of: extracting an initial Sensor Noise Pattern (SNP) for the image; enhancing the initial SNP to create an enhanced SNP by applying a correcting model, wherein the correcting model scales the initial SNP by a factor inversely proportional to the signal intensity of the initial SNP; determining a similarity measure between the enhanced SNP for said image with one or more previously calculated enhanced SNPs for one or more different images; and classifying the image in a group of one or more images with similar or identical SNPs based on the determined similarity measure.
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申请公布号 |
CA2752632(A1) |
申请公布日期 |
2010.08.19 |
申请号 |
CA20102752632 |
申请日期 |
2010.02.15 |
申请人 |
FORENSIC PATHWAYS |
发明人 |
LEARY, RICHARD;CHANG-TSUN, LI |
分类号 |
G06K9/40;G06K9/62 |
主分类号 |
G06K9/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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