What Is Digital Noise Reduction

Digital noise reduction (DNR) is a feature found in IP cameras that is designed to improve the quality of video footage by removing digital noise or graininess that can occur in low light or high ISO (sensitivity) settings.

Digital noise can occur when an IP camera sensor amplifies the signal to capture low light images, resulting in a grainy appearance that can reduce the overall image quality and make it difficult to see details.

DNR technology works by analyzing the digital noise in the image and applying filters to remove it, resulting in a clearer and more detailed image. The amount of digital noise reduction can usually be adjusted in the camera settings to balance image quality with processing power and bandwidth limitations.

NOTE: 3D DNR can be used to enhance image quality and save bandwidth.