SoRadialGradientCenteredProcessing2d engine More...
#include <ImageViz/Engines/EdgeDetection/Gradient/SoRadialGradientCenteredProcessing2d.h>
Public Types | |
enum | ProjectionMode { GRADIENT_NORMAL = 0, GRADIENT_NORMAL_TANGENTIAL = 1 } |
Public Member Functions | |
SoRadialGradientCenteredProcessing2d () | |
Public Attributes | |
SoSFImageDataAdapter | inGradientXImage |
SoSFImageDataAdapter | inGradientYImage |
SoSFVec2i32 | projectionCenter |
SoSFEnum | projectionMode |
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * > | outNormalImage |
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * > | outTangentImage |
The SoRadialGradientCenteredProcessing2d engine performs a projected gradient computing the directional vector.
For an introduction, see:
In the continuous 2-D case, for a given pixel and knowing the gradient and , the projected gradient of an image is defined along the unitary vector , as :
The SoRadialGradientCenteredProcessing2d performs a projected gradient computing the directional vector from a single given center. For all pixel in the image, is the center.
It is a common way to get the recursive gradient in X and Y directions for input image and , using a spread of 60.
The projected resulting gradient image is the Normal Gradient. Simultaneously, the tangential gradient could be computed with the option GRADIENT_NORMAL_TANGENTIAL of ProjectionMode
SoGradientOperatorProcessing2d, SoRadialGradientContourProcessing2d, SoRadialGradientLabelProcessing2d.
inGradientXImage | NULL |
inGradientYImage | NULL |
projectionCenter | 0 0 |
projectionMode | GRADIENT_NORMAL |
GRADIENT_NORMAL |
The engine computes the normal gradient. Only the outNormalImage output is set using this mode. |
GRADIENT_NORMAL_TANGENTIAL |
The engine computes the normal and tangential gradients. Both outNormalImage and outTangentImage outputs are set using this mode. |
SoRadialGradientCenteredProcessing2d::SoRadialGradientCenteredProcessing2d | ( | ) |
Constructor.
The input X-gradient image.
Default value is NULL. Supported types include: grayscale color image.
The input Y-gradient image.
Default value is NULL. Supported types include: grayscale color image.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoRadialGradientCenteredProcessing2d::outNormalImage |
The output normal gradient image.
Default value is NULL. Supported types include: grayscale binary label color image.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoRadialGradientCenteredProcessing2d::outTangentImage |
The output tangent gradient image.
Default value is NULL. Supported types include: grayscale binary label color image.
The center of projection coordinates.
Default value is SbVec2i32(0,0).
Select the output images mode.
Use enum ProjectionMode. Default is GRADIENT_NORMAL