Smooth

Blend each frame with the frames before it. The node keeps a running image on the GPU and mixes every new input frame into it. Use it to calm a noisy webcam, to soften the flicker of a detection node, or to build motion blur and light trails.

The first frame after a start or a clear passes through as-is, so the output does not fade up from black.

Parameters

• Amount How much of the previous frames survives, from 0 to 1. At 0 the input passes through unchanged. At 1 the running image freezes. The response is cubic, so most of the useful range sits near the top: 0.7 is a light smoothing, 0.95 is a long trail.
• Mode How the new frame combines with the running image. average is a plain crossfade. max keeps the brightest value of each pixel, so bright objects leave trails on a dark background. min keeps the darkest value, so dark objects leave trails on a light background. Alpha always uses the average.
• Clear Drop the running image and start again from the next input frame.

Outputs

• Out The smoothed image, at the size of the input image.