Noise node
This documentation is for version 2.0 of Noise (net.sf.cimg.CImgNoise).
Description
Add random noise to input stream.
Uses the ‘noise’ function from the CImg library, modified so that noise is reproductible at each render.
CImg is a free, open-source library distributed under the CeCILL-C (close to the GNU LGPL) or CeCILL (compatible with the GNU GPL) licenses. It can be used in commercial applications (see http://cimg.eu).
Inputs
Input |
Description |
Optional |
|---|---|---|
Source |
Yes |
|
Mask |
Yes |
Controls
Parameter / script name |
Type |
Default |
Function |
|---|---|---|---|
Sigma / |
Double |
0.01 |
Amplitude of the random additive noise. |
Type / |
Choice |
Gaussian |
Type of additive noise.
Gaussian (gaussian): Gaussian noise.
Uniform (uniform): Uniform noise.
Salt & Pepper (saltnpepper): Salt & pepper noise.
Poisson (poisson): Poisson noise. Image is divided by Sigma before computing noise, then remultiplied by Sigma.
Rice (rice): Rician noise.
|
Seed / |
Integer |
2000 |
Random seed: change this if you want different instances to have different noise. |
Static Seed / |
Boolean |
Off |
When enabled, the dither pattern remains the same for every frame producing a constant noise effect. |
(Un)premult / |
Boolean |
Off |
Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied. |
Invert Mask / |
Boolean |
Off |
When checked, the effect is fully applied where the mask is 0. |
Mix / |
Double |
1 |
Mix factor between the original and the transformed image. |