Biometry: Difference between revisions
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=Quality indices= |
=Quality indices= |
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False Rejection Rate (frr) |
False Rejection Rate (frr) |
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*Rate of authentication attempts from legitimate users that are rejected. |
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False Acceptance Rate (far) |
False Acceptance Rate (far) |
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*Rate of authentication attemps from illegitimate users (e.g. attackers) that are accepted. |
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Equal Error Rate (eer) |
Equal Error Rate (eer) |
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*The eer equals the far and frr when the system is configured so that far = frr. |
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Failure to Enroll Rate (fer) |
Failure to Enroll Rate (fer) |
||
*Rate of users that can’t enroll into the system at all. |
|||
Revision as of 13:05, 15 February 2005
Overview
- Broad Overview on Biometric Criteria
- Facial recognition
- Use, Scenario, Features
- General course
- Approaches
- Summary
- Insights on Fingerprints
- Features
- Acquisition
- Recognition
- Demonstration
- Problems
Short Introduction
- I biometry: the statistical analysis of biological
observations and phenomena (Merriam-Webster Online Dictionary)
- I biometric: a measurable, physical characteristic or
personal behavioral trait used to recognize the identity, or verify the claimed identity of a person
- I Three levels:
- 1. I know something (passwords)
- 2. I have something (tokens)
- 3. I am something (biometry)
Classification
Two diffent modes must be distinguished:
- Identification “Who is it?”
- Authentication “Is it her?”
Quality indices
False Rejection Rate (frr)
- Rate of authentication attempts from legitimate users that are rejected.
False Acceptance Rate (far)
- Rate of authentication attemps from illegitimate users (e.g. attackers) that are accepted.
Equal Error Rate (eer)
- The eer equals the far and frr when the system is configured so that far = frr.
Failure to Enroll Rate (fer)
- Rate of users that can’t enroll into the system at all.