SmoothAnisotropic node

This documentation is for version 2.0 of SmoothAnisotropic (net.sf.cimg.CImgSmooth).

Description

Smooth/Denoise input stream using anisotropic PDE-based smoothing.

Uses the ‘blur_anisotropic’ 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	60	Amplitude of the smoothing, in pixel units (>=0). This is the maximum length of streamlines used to smooth the data.
Sharpness / sharpness	Double	0.7
Anisotropy / anisotropy	Double	0.3	Smoothing anisotropy (0<=a<=1)
Gradient Smoothness / alpha	Double	0.6
Tensor Smoothness / sigma	Double	1.1	Geometry regularity, in pixels units (>=0)
Spatial Precision / dl	Double	0.8	Spatial discretization, in pixel units (0<=dl<=1)
Angular Precision / da	Double	30	Angular integration step, in degrees (0<=da<=90). If da=0, Iterated oriented Laplacians is used instead of LIC-based smoothing.
Value Precision / prec	Double	2	Precision of the diffusion process (>0).
Interpolation / interpolation	Choice	Nearest-neighbor	Interpolation type Nearest-neighbor (nearest): Nearest-neighbor. Linear (linear): Linear interpolation. Runge-Kutta (rungekutta): Runge-Kutta interpolation.
Fast Approximation / is_fast_approximation	Boolean	On	Tells if a fast approximation of the gaussian function is used or not
Iterations / iterations	Integer	1	Number of iterations.
Set Thin Brush Defaults / thinBrush	Button		Set the defaults to the value of the Thin Brush filter by PhotoComiX, as featured in the G’MIC Gimp plugin.
(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.