Night vision cameras utilize infrared light to illuminate scenes in darkness. However, human eyes cant see infrared light, its beyond the visible spectrum for us. When cameras detect this light, it is not represented in colors because the wavelengths of infrared light dont correspond to visible colors. Therefore, the camera represents this data in grayscale or black and white. This simplification also helps in producing clearer images in low light, as color data can introduce noise.
Night vision technology in cameras has become a critical component for effective surveillance and security systems, allowing for clear visualization in low-light conditions. When the lighting is poor, most cameras automatically switch to night mode and activate infrared illumination. This feature is essential to ensure the security of various premises, ranging from residential areas to commercial spaces, especially during the nighttime.
Continuous recording is essential in public places such as airports, railway stations, busy streets, highways, and large shopping centers. It ensures that every moment is captured, allowing for post-event analysis. However, in areas with intermittent activity, such as indoor spaces or courtyards, continuous recording may be excessive. Here, recordings can be triggered by specific objects, such as humans or animals. For instance, in an elevator lobby, recording can commence when someone enters, or in a store at night, when unfamiliar activity is detected.
Definition of CCTV Systems:
Closed-circuit television (CCTV) systems refer to a network of cameras and recording equipment used for surveillance purposes. Unlike broadcast television, the signal in a CCTV system is not openly transmitted but is instead monitored, typically for security and surveillance purposes. These systems are prevalent in various settings, capturing and recording footage that can be reviewed or monitored in real-time to enhance security, deter crime, and assist in investigations.