Equalize node¶
This documentation is for version 2.0 of Equalize (net.sf.cimg.CImgEqualize).
Description¶
Equalize histogram of pixel values.
To equalize image brightness only, use the HistEQCImg plugin.
Uses the ‘equalize’ function from the CImg library.
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 | No | |
| Mask | Yes |
Controls¶
| Parameter / script name | Type | Default | Function |
|---|---|---|---|
NbLevels / nb_levels |
Integer | 4096 | Number of histogram levels used for the equalization. |
Min Value / min_value |
Double | 0 | Minimum pixel value considered for the histogram computation. All pixel values lower than min_value will not be counted. |
Max Value / max_value |
Double | 1 | Maximum pixel value considered for the histogram computation. All pixel values higher than max_value will not be counted. |
(Un)premult / 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 / maskInvert |
Boolean | Off | When checked, the effect is fully applied where the mask is 0. |
Mix / mix |
Double | 1 | Mix factor between the original and the transformed image. |