Week 5 Biometrics Flashcards
What are the 2 types of biometric characteristics?
Physiological
behavioral
________ is used to verify and confirm the presence of an individual from a previous enrolled sample.
Biometric verification
______ is used to identify an individual in a population using a set of previously enrolled samples.
biometric identification
What is a design determinant?
quality of acquired input samples based on sensor design, user interface design and standards compliance.
What is non-design determinant?
Improve Quality of analysis by reacquisition from a user, real-time selection of best sample, selective invocation of different processing methods.
What are the phases of enrollment phases (processes)?
- User submission (acquisition)
- feature extraction (image or signal processing)
- Template generation
- Standardized templates
What does feature extraction look for in fingerprint extraction?
location and direction of ridge endings and ridge bifurcations (ridge alignment and placement)
A _______ is created after biometric algorithm locates features in a sample.
Template
A _____ template is created when a user first enters a sample into the database and a _____ template is generated at subsequent uses, and compared to the original.
enrollment
verification
Matching of 1 live sample w/large # of stored samples is called ______. 1 to many matching.
Identification
Matching 1 live sample with 1 stored sample is called _____. 1 to 1 matching.
Verification
A ____ is the result of the matching process and is used to compare to a threshold.
score
The ____ is a pre-determined value that limits what is acceptable for a system.
threshold
A _______ is the probability that a given user’s verification template will be incorrectly judged to match a different user’s enrollment template.
False Match Rate (FMR)
A ______ will get unauthorized persons IN.
False Match Rate (FMR)
