Noise Node

The Noise node enables you to add video noise to imagery. It provides you with extensive control over the amount and character of noise you wish to add.

Note:
To create film grain, use the Grain Node instead of the Noise node. The Grain node is optimized for film grain simulation.

Noise Parameter Tab

Noise

You set the Noise parameter by keying in a numerical value between 0 and 1.0 or by using the mouse to set the tuner to the desired value. A value of 0 adds no noise to the image; a value of 1.0 represents maximum noise.

Seed

The Seed value is used to generate a sequence of random numbers for the noise operation. By default, this parameter has been animated using the $F variable--which represents the current frame number--to create a new value for every frame. Varying the Seed parameter will generate a different noise pattern for each frame.

Constant Hue / Sat

Check this parameter to keep hue and saturation constant; only the luminance value changes.

Value Relative

Check this parameter to keep the luminance value of the noise relative to that of the image.

Channel Mask

The Channel Mask parameter enables you to inhibit the modification of any channel to the noise effect by deselecting a channel icon.

Control Image Parameters

The Control Action and Control Channel menus enable you to specify how an optional control image input will govern the node operation, as explained in "Using Control Images with Filter Nodes ."




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