LoG¶
-
MLModule
¶ genre Kernel
author MeVis Medical Solutions AG
package MeVisLab/Standard
dll MLKernel
definition MLKernel.def see also Convolution
,ExtendedConvolution
,Morphology
,KernelExample
,KernelEditor
,Sigma
,Rank
,StandardDeviation
keywords enhance
,kernel
,filter
,interval
,convolution
,Roberts
,Sharpen
,Laplacian
,Laplace
,Gaussian
Purpose¶
The module LoG
(Laplacian of Gaussian) implements a bandpass filter which combines the functionality of the Laplace and the Gauss filter.
The Laplace is a highpass filter and the Gauss is a lowpass filter. The LoG is also known as Marr-Hildreth- or Mexican-Hat-Filter.
Tips¶
The best Kernel Extent
is >= 13.
The minimum and maximum values of the output image may have larger ranges than really useful. This is because a good estimation of them is not possible without calculating the entire image.
Parameter Fields¶
Field Index¶
Border Handling : Enum |
Use : Bool |
Fill Value : Double |
|
Kernel Extent : Integer |
|
Max : Double |
|
Min : Double |
|
normalize : Bool |
|
referenceExtentMode : Enum |
|
Sigma : Double |
Visible Fields¶
Border Handling¶
-
name:
borderHandling
, type:
Enum
, default:
PadSrcClamp
, deprecated name:
edgeMode
¶ Defines the border handling mode.
See
Border Handling in Kernel Operations
for details.
Values:
Title | Name |
---|---|
No Pad | NoPad |
Pad Src Fill | PadSrcFill |
Pad Dst Fill | PadDstFill |
Pad Dst Fill With Orig | PadDstFillWithOrig |
Pad Src Undefined | PadSrcUndefined |
Pad Dst Undefined | PadDstUndefined |
Pad Src Clamp | PadSrcClamp |
Fill Value¶
-
name:
fillValue
, type:
Double
, default:
0
¶ Sets the fill value for certain
Border Handling
modes.
Kernel Extent¶
-
name:
kernelExt
, type:
Integer
, default:
2
, minimum:
1
, maximum:
100
¶ Sets the extent of the kernel which is actually (2 * value) + 1.
Sigma¶
-
name:
sigma
, type:
Double
, default:
1.4
, minimum:
0
¶ Sets the variance for the Gaussian part of the calculation.
Min¶
-
name:
intervalMinOfFilteredVoxels
, type:
Double
, default:
0
, deprecated name:
ImageIntervalMin
¶ Sets the minimum value threshold for outputting a subset of voxel.