There is a simple rule which determines the effectiveness of any video surveillance installation – without light there can be no picture. And since most crime takes place during the vulnerable hours of darkness, today’s HD security systems need to be equipped for round-the-clock surveillance.
Without sufficient lighting, most cameras will capture lower quality, noisier images in dark, night-time conditions. By adding specialized security illumination, such as infrared or white light illumination, to HD cameras that will be used in dark or outdoor settings, you can improve image quality and usability while also reducing the bit rates of night-time video.
Image noise can interfere with compression algorithms, as it is often interpreted as movement on scene. Because of this, night-time surveillance video is less compressed and larger in file size than it should be. Rather than capping bit rates of cameras, which can compromise image quality, or continually adding storage to a security system, it is best to address the root cause of the problem. Installing energy efficient infrared or white light illumination on scene enables compression algorithms to work to optimum effect and HD security cameras to deliver high resolution, evidentiary quality night-time surveillance video with virtually zero image noise.
Bosch illuminators feature innovative 3D Diffuser technology which directs light to the foreground and background of the cameras field of view, for perfectly evenly illuminated night-time images, free from hotspots and overexposure caused by other illuminators. 3D Diffuser technology is ideally suited for high definition surveillance as its asymmetric beam pattern matches the wider field of view captured by cameras that produce images in a 16:9 aspect ratio. Infrared or white light illumination with 3D Diffuser technology optimizes the performance of HD cameras at night; ensuring users get the most detail in their surveillance images with the highest level of compression.
