Objects don’t move randomly over time, but noise does. Video is a changing image, it moves over time. The answer lies on the very nature of video. If you have not done it yet, start Nuke and exit it. It is an extremely effective way to clean up video from any source including video cameras, digitized film, TV tuners and others. Installing the plug-in To install the Neat Video OFX plug-in: Make sure you have started Nuke at least once before installing the plug-in. Neat Video is a powerful video editing plug-in designed to reduce digital noise, flicker and other imperfections. How can we know that bright spot on the beach is caused by a sand grain or a noisy pixel? Reducing noise to improve visual quality. What’s different between a video of a sand beach and pure noise? They both have small detail, the pattern is random in most cases and it affects all of the channels. Our goal is to find a criteria which helps us to separate the damage pixels. A median filter is more subtle, but it will only work when the noise is very visible and very small.
A blur filter will remove all the noise, but it will also destroy the rest of the image. You could try to look for small pixels which differ from the surrounding patterns, you could try to smooth the hole images keeping the borders intact, you could apply complex statistical models which decide if a pixel is susceptible to be noisy, etc.īut we do not want to affect the detail and textures of the image. There are many ways to decide how much noise a pixel has.
