| 发明名称 |
STANDARD CALIBRATION TARGET FOR CONTACTLESS FINGERPRINT SCANNERS |
| 摘要 |
A contactless, three-dimensional fingerprint scanner apparatus, method, and system are described. The contactless fingerprint scanner can provide either, or both, topographical contrast of three-dimensional fingerprint features and optical contrast of a three-dimensional fingerprint surface. Data captured from scanning of a target with known geometric features mimicking fingerprint features can be examined as images or surface plots and analyzed for fidelity against the known target feature specifications to evaluate or validate device capture performance as well as interoperability. The target can be used by scanner vendors and designers to validate their devices, as well as to perform type certification. |
| 申请公布号 |
US2016203355(A1) |
申请公布日期 |
2016.07.14 |
| 申请号 |
US201614995574 |
申请日期 |
2016.01.14 |
| 申请人 |
Govt. of the U.S.A. as represented by the Sec. of Commerce, The National Institute of Standards and |
发明人 |
Orandi Shahram;Byers Fred;Harvey Stephen;Garris Michael D.;Wood Stephen S.;Libert John M.;Wu Jin Chu |
| 分类号 |
G06K9/00;H04N13/02;H04N17/00 |
主分类号 |
G06K9/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for contactless fingerprint scanning for improved, validated, and repeatable image capture, said method comprising:
acquiring at least one of a topographical measurement, contrast of a three-dimensional fingerprint feature, and optical contrast of a three-dimensional fingerprint surface in three-dimensional space; and capturing a two-dimensional representation of a three dimensional finger by measuring at least one of said three-dimensional fingerprint feature and optical contrast for identification matching, three dimensional fingerprint scanner calibration testing, and three dimensional fingerprint scanner calibration correction. |
| 地址 |
Gaithersburg MD US |
