[Insight-users] Actually implementing a Gabor filter

[Neal R. Harvey]

Nicholas Tustison wrote:
> Okay, then, let me ask this---have you actually ran the examples untouched (for both contributions) and ensured that the outputs of the examples can be run on your machine and are correct?
>   
I have built the examples, successfully. I have managed to create a 
gabor kernel image using the test code from the "go-go Gabor gadgetry" 
paper.
However, I have not had success in using this gabor kernel image with 
the test code from the "Image kernel convolution" paper. I was very limited
in the output image type that the test code would let me write the Gabor 
kernel image. One that the code did allow me to write was a VTKimage.

command: itkGaborImageSourceTest /tmp/testGaborKernel.vtk 0

No error messages and the file /tmp/testGaborKernel.vtk was successfully 
written.

command: ls -l /tmp/testGaborKernel.vtk
-rw-rw---- 1 harve harve 262476 Jun 22 10:28 /tmp/testGaborKernel.vtk

Then, when I use this with the convolution test code, I get the 
following message:

command: itkConvolutionImageFilterTest 2 test0.img 
/tmp/testGaborKernel.vtk /tmp/testGaborOutput.tif

Message:

WARNING: In 
/data0/harve/itk/InsightToolkit-3.18.0/Code/Common/itkImageBase.txx, 
line 289
Image (0x910ad48): Not executing UpdateOutputData due to zero pixel 
condition RequestedRegion:ImageRegion (0x910ae2c)
Dimension: 2
Index: [0, 0]
Size: [0, 0]
BufferedRegion: ImageRegion (0x910ae40)
Dimension: 2
Index: [0, 0]
Size: [256, 256]