| 发明名称 |
IMAGE-BASED LIVENESS DETECTION FOR ULTRASONIC FINGERPRINTS |
| 摘要 |
A liveness-detection method and/or system is disclosed. A method of detecting liveness can comprise obtaining a single ultrasonic image of a biometric object. The single ultrasonic image can be subdivided into a plurality of overlapping sample blocks. Feature vectors can be extracted in a spatial domain and a frequency domain from each of the plurality of sample blocks. The feature vectors can be compared from each of the plurality of sample blocks to a classification model. |
| 申请公布号 |
US2016070968(A1) |
申请公布日期 |
2016.03.10 |
| 申请号 |
US201514845174 |
申请日期 |
2015.09.03 |
| 申请人 |
QUALCOMM Incorporated |
发明人 |
Gu Jin;Chen Ming Yu;Du Eliza Yingzi;Chan Kwokleung;Vural Esra;Bandyopadhyay Saurav |
| 分类号 |
G06K9/00;G06T7/00;G06T7/40 |
主分类号 |
G06K9/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of detecting liveness, comprising:
obtaining a single ultrasonic image of a biometric object; subdividing the single ultrasonic image into a plurality of overlapping sample blocks; extracting feature vectors in a spatial domain and a frequency domain from each of the plurality of sample blocks; and comparing the feature vectors from each of the plurality of sample blocks to a classification model. |
| 地址 |
San Diego CA US |
