SharpenShock node — Natron 2.5.0 documentation

# SharpenShock node

This documentation is for version 2.0 of SharpenShock (net.sf.cimg.CImgSharpenShock).

## Description

Sharpen selected images by shock filters.

Uses ‘sharpen’ 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
--- | --- | --- | ---
Amplitude / `amplitude` | Double | 0.6 | Standard deviation of the spatial kernel, in pixel units (>=0). Details smaller than this size are filtered out.
Edge Threshold / `edgeThreshold` | Double | 0.1 | Edge threshold.
Gradient Smoothness / `alpha` | Double | 0.8 | Gradient smoothness (in pixels).
Tensor Smoothness / `sigma` | Double | 1.1 | Tensor smoothness (in pixels).
Iterations / `iterations` | Integer | 1 | Number of iterations. A reasonable value is 1.
(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.