Face recognition is a research area within the field of computer vision that focuses on identifying or verifying a person's identity based on their facial features. This technology has various applications, such as security systems, surveillance, and human-computer interaction. Researchers use techniques like machine learning, pattern recognition, and image processing to analyze and compare the unique facial characteristics of individuals. Face recognition systems may require a database of known faces for comparison, and can be implemented using cameras or sensors to capture facial images. The goal is to accurately and efficiently match or classify faces in real-time or within a database.