SoRadialGradientContourProcessing3d Class Reference
[Gradient]

SoRadialGradientContourProcessing3d engine More...

#include <ImageViz/Engines/EdgeDetection/Gradient/SoRadialGradientContourProcessing3d.h>

Inheritance diagram for SoRadialGradientContourProcessing3d:

Public Member Functions
	SoRadialGradientContourProcessing3d ()
Public Attributes
SoSFImageDataAdapter	inGradientXImage
SoSFImageDataAdapter	inGradientYImage
SoSFImageDataAdapter	inGradientZImage
SoSFImageDataAdapter	inMarkerImage
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outNormalImage

Detailed Description

SoRadialGradientContourProcessing3d engine

The SoRadialGradientContourProcessing3d engine performs a projected gradient computing the directional vector

For an introduction, see:

In the continuous 3-D case, for a given pixel $x$ and knowing the gradient $Gx$ , $Gy$ and $Gz$ , the projected gradient of an image $I(x)$ is defined along the unitary vector $U(u,v,w)$ , as:

$G_p=Gx\times u + Gy\times v + Gz\times w, ~with~ U(u,v,w)=\frac{\overrightarrow{x-p}}{\left\| x-p \right\|}$

The SoRadialGradientContourProcessing3d performs a projected gradient computing the directional vector from the contour of objects. For a pixel $x$ in the image, the center $p$ taken into account is the closest pixel contour of the closest object.