Biometrics 简明教程

Biometrics Modalities

生物识别模式只不过是生物识别系统的类别，取决于它作为输入获取的人的特征类型。

A biometric modality is nothing but a category of a biometric system depending upon the type of human trait it takes as input.

生物识别学在很大程度上是统计学。从样本中获取的数据越多，系统就越有可能独特且可靠。它可以针对各种模式进行工作，这些模式与个体的身体测量和特征以及行为模式有关。模式根据个体的生物特征进行分类。

The biometrics is largely statistical. The more the data available from sample, the more the system is likely to be unique and reliable. It can work on various modalities pertaining to measurements of individual’s body and features, and behavioral patterns. The modalities are classified based on the person’s biological traits.

Types of Biometric Modalities

人类存在各种特征，可用作生物识别模式。生物识别模式分为三类：

There are various traits present in humans, which can be used as biometrics modalities. The biometric modalities fall under three types −

  1. 1. Physiological

  2. 2. Behavioral

  3. 3. Combination of physiological and behavioral modality

下表收集了区分这三种模式的要点：

The following table collects the points that differentiate these three modalities −

Physiological Modality

Behavioral Modality

Combination of Both Modalities

This modality pertains to the shape and size of the body.

This modality is related to change in human behavior over time.

This modality includes both traits, where the traits are depending upon physical as well as behavioral changes.

For example − Fingerprint RecognitionHand Geometry Recognition systemFacial Recognition SystemIris Recognition SystemHand Geometry Recognition SystemRetinal Scanning SystemDNA Recognition System

For example − Gait (the way one walks)Rhythm of typing keysSignature

For example − Voice Recognition It depends on health, size, and shape of vocal cord, nasal cavities, mouth cavity, shape of lips, etc., and the emotional status, age, illness (behavior) of a person.

在随后的章节中，我们将更详细地讨论这些模态中的每一个。

In the subsequent chapters, we will discuss each of these modalities in greater detail.