HeadStabilization

Only in Wrap4D

Finds stabilization transform for input expression using forehead and nosebridge masks and a neutral geometry and optional by screen points.

Attention

The node is not guaranteed to give good results if Expression and Neutral geometries are not aligned, or their scale is different from our gallery.

Inputs

Expression Geometry

Geometry Geometry to be stabilized

Neutral Geometry

Geometry Geometry to serve as a stabilization reference

Forehead Mask

VertexMask Mask that covers the forehead area

Nosebridge Mask

VertexMask Mask that covers the nosebridge area

Reference Geometry

Geometry Geometry to serve as a stabilization reference

Reference Points

NamedPointsOnTriangle Points on reference geometry that will be compared with screen points

Target Cameras

Camera Cameras for screen points

Target Screen Points

ScreenPoints Points on images that will be used for stabilization

Target Images

Image Images of the target from cameras

Output

Geometry Expression geometry with stabilization transform on it

Parameters

Max Iterations:

Max number of stabilization iterations

Trust Region:

Number representing how much we trust the difference between Expression and Neutral geometries. Higher values may help if the result appears unstabilized. Values lower than the default are generally unadvisable

Forehead Coef:

Number representing the weight of actor’s facial features, specifically forehead. The default value usually provides a good result, but might be increased or reduced depending on the actor

Nosebridge Coef:

Number representing the weight of actor’s facial features, specifically nosebridge. The default value usually provides a good result, but might be increased or reduced depending on the actor

Smoothing Iterations:

Number of smoothing iterations to remove noise from the geometry

Order:

Number representing the amount of averaging that happens during stabilization. The default value usually provides a good result, but higher values may result in better stabilization of expressions with strong nose compression. Higher values also make the algorithm slower

Control Points Weight:

Fitting weight, corresponding to connecting points to screen points

Vertex Mask Examples

Forehead Mask

Nosebridge Mask