Denoise
Definition
Denoising is a post-production process that reduces or removes digital noise (the random variation of brightness or color in an image, similar to film grain) from video footage. Noise is typically introduced when footage is shot in low light conditions, when the camera's ISO (sensitivity) is set too high, or when footage is heavily graded in post-production. Denoising algorithms analyze the image and attempt to distinguish between the actual image content and the random noise, smoothing out the noise while preserving the detail. Common denoising tools include DaVinci Resolve's built-in noise reduction, Neat Video, and Topaz DeNoise.
Contextual Usage
The colorist flags a problem to the post-production supervisor: "The night exterior scenes are very noisy — the camera was pushed to ISO 6400, and the noise is quite visible, especially in the dark areas of the image. I'm going to apply some denoising to those scenes, but I need to be careful not to over-smooth the image and lose the texture. I'll find a balance that reduces the noise without making the image look plasticky."
About this section
Color grading and finishing is the final visual polish of the image — the stage at which the raw footage is transformed into the rich, cinematic image that the audience will ultimately see. A skilled ...
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