- Digital Noise Reduction (DNR) is a technology that removes image noise from a video signal.
- This happens by making images clearer and reducing video file size.
- Image noise refers to the blurry effect that is mostly seen in videos shot in dark low-light spaces.
- DNR works by analyzing pixels inside an image to remove the blurry appearance of low-light images.
- DNR also handles moving pictures/objects without leaving trails on the screen to ensure smooth viewing even with dimly lit scenes.
- DNR exists in 2 forms; 2D and 3D Digital Noise Reduction.
- While both do the same work, 3D DNR also reconciles any errors during color blending for pictures on the TV screen.
Also read: What is the MEMC Algorithm and how does it work in TV?