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The core function of a face recognition system is identifying faces. It is a biometric method that combines image processing and biostatistics. The system computes regional facial features, using computer image-processing techniques to capture facial characteristics and biostatistical methods to analyze the data and build mathematical models. It has broad market prospects.
Advantages of face recognition systems
1. Face recognition captures faces with a dedicated camera and performs identification quickly; recognition can be as fast as 0.01 seconds.
2. With 3D human recognition, disguises are unlikely to fool the system.
3. Face recognition systems can store facial templates. If the facial features of known dangerous individuals are entered into the system, those individuals can be blocked at security checkpoints and trigger alerts, improving security for residential complexes and office buildings.
4. In restricted areas such as archives or control centers, only authorized personnel are permitted entry; visitors whose facial data have not been registered in the system cannot gain access.
How face recognition compares to fingerprint recognition
Compared with fingerprint systems commonly used today, face recognition offers several advantages.
1. Fingerprint systems are generally slower and often fail to recognize prints, requiring multiple attempts and resulting in a poorer user experience.
2. Factors such as dirt, moisture, or skin damage on the finger can prevent accurate fingerprint recognition.
3. Fingerprint sensors are typically designed for indoor use and may not perform reliably outdoors. Face recognition systems can operate continuously 24/7 and are applicable in a wider range of environments, both indoors and outdoors.
4. Face data enable unique identification that the system can read even when individuals are not aware they are being monitored. For example, when visitors enter China, authorities may register facial data to enable future identification by automated systems. Such practices raise privacy considerations that depend on local laws and regulations.
5. Face recognition is contactless and can allow unobtrusive passage, while fingerprint identification requires users to make physical contact and is slower and less convenient.
These points summarize the main advantages of face recognition systems compared with fingerprint systems.
