Image processing apparatus and 3D model generation method
US-12148211-B2 · Nov 19, 2024 · US
Fake-finger determination device
US8929618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8929618-B2 |
| Application number | US-201013514226-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 10, 2010 |
| Priority date | Dec 7, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Fingerprint images that are required for fake-finger determination can be acquired with a single input operation, and the user-friendliness and the determination accuracy of a fake-finger are improved. This device has moving means for moving a sensor surface, on which a finger as a determination object is placed, relatively to the finger, sensing means for acquiring fingerprint images of the finger before and after the sensor surface is moved, derivation means for obtaining a deformation level of the fingerprint before and after the sensor surface is moved based on two types of fingerprint images obtained by the sensing means, storage means for storing a deformation threshold related to the deformation level of the fingerprint to determine whether the finger on the sensor surface is a real finger or a fake-finger, and determination means for determining whether the finger placed on the sensor surface is a real finger or a fake-finger based on comparison results of the deformation level of the fingerprint obtained by the derivation means and the deformation threshold.
First claim
Opening claim text (preview).
What is claimed is: 1. A determination object sensing device, comprising: a moving unit for moving a sensor surface, on which a finger as a determination object is placed, the finger being in a fixed state at a predetermined speed in a predetermined amount in a horizontal direction of the sensor surface; a sensing unit for acquiring fingerprint images of the finger before and after the sensor surface is moved; a derivation unit for obtaining a deformation level of the fingerpr…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8929618B2 cover?
- Fingerprint images that are required for fake-finger determination can be acquired with a single input operation, and the user-friendliness and the determination accuracy of a fake-finger are improved. This device has moving means for moving a sensor surface, on which a finger as a determination object is placed, relatively to the finger, sensing means for acquiring fingerprint images of the fi…
- Who is the assignee on this patent?
- Nakamura Yoichi, Nec Corp
- What technology area does this patent fall under?
- Primary CPC classification G06T1/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).