genre | Filters |
authors | Holger Bourquain, Jan Rexilius |
package | MeVisLab/Standard |
dll | MLFilter1 |
definition | mlFilter1.def |
see also | MorphologicalGradient |
keywords | calculation, derivative, vector, field, edge, detection |
The module CalculateGradient performs edge detection and edge enhancement by calculating the local gradient in ML images.
C (c_Derivative): Bool | status: String | Y: Bool |
C (c_VoxelSize): Float | Step Width: Integer | Z: Bool |
Direction: Enum | T (t_Derivative): Bool | |
Edge Mode: Enum | T (t_VoxelSize): Float | |
Factor: Float | U (u_Derivative): Bool | |
Mode (gradientMode): Enum | U (u_VoxelSize): Float | |
Mode (enhanceMode): Enum | Width: Float | |
Radius: Float | X: Bool |
If checked, the gradient in x-direction is computed.
If checked, the gradient in y-direction is computed.
If checked, the gradient in z-direction is computed.
If checked, the gradient in c-direction is computed.
If checked, the gradient in t-direction is computed.
If checked, the gradient in u-direction is computed.
Sets the voxel size for gradient computation in c-direction.
Sets the voxel size for gradient computation in t-direction.
Sets the voxel size for gradient computation in u-direction.
Defines the gradient computation mode.
Values:
Title | Name | Description |
---|---|---|
Max | Max | Writes the maximum gradient value to the output image. |
Norm | Norm | Writes the normalized gradient value into the output image. |
Radial | Radial | Writes a radial gradient value into the output image. The radial gradient is computed from the image center or from the position of the first marker if a marker list is attached. |
2nd Deriv Max | 2ndDeriv_Max | Writes the maximum value of the second derivative gradient into the output image. |
2nd Deriv Norm | 2ndDeriv_Norm | Writes the normalized value of the second derivative gradient into the output image. |
2nd Deriv Radial | 2ndDeriv_Radial | Writes a second derivative radial gradient value into the output image. The radial gradient is computed from the image center or from the position of the first marker if a marker list is attached. |
Laplace | Laplace | Writes the laplacian gradient value into the output image. |
Curvature | Curvature | Writes a curvature value into the output image. |
Separate | Separate | Writes the separate gradient values for x, y and z into the u-dimension of the output image. |
Abs Separate | AbsSeparate | Writes the absolute separate gradient values for x, y and z into the u-dimension of the output image. |
Defines the type of gradient computation.
Values:
Title | Name |
---|---|
Central | Central |
Inferior | Inferior |
Superior | Superior |
Defines the edge mode for gradient computation.
Values:
Title | Name |
---|---|
Const | Const |
Linear | Linear |
Sets the step width or kernel size in x, y and z direction for gradient computation.
Defines the enhancement mode for gradient computation.
Values:
Title | Name |
---|---|
None | None |
Triangular | Triangular |
Gauss | Gauss |