
Please use this identifier to cite or link to this publication: http://hdl.handle.net/1926/1370 |



















The author describes the parabolic operators and the implementation he made.
Open Science:The source code is provided as well as the input images.
Reproducibility:I've been able to download, build, run the code with the test program, validate the results and measure the perfomance with the test suite. Just perfect!
Open source Contributions:The code is usable without any problem, and very clearly documented both in the article and in the code. Using it is a matter of minutes.
Code Quality :Some problems in the style, like the usage on tabs and things of that kind. You should try to run KWStyle to fix them.
Excepted those minor problems, the code is nice and should build everywhere.
Interest:As said in the article, this transform is used in microscopy to correct the non-uniform background. The exact distance transform is a very important transform.
Free comment :I ran the performance suite and get quite different result than yours:
Parabolic Maurer Danielsson
12.2 12.5 27.2
The parabolic implementation and Maurer's one gives similar result in that case. Maurer and Danielsson filters can also be modified to use a more efficient contour detector. I then get an execution time of 8.06 s. It might be interesting to see how it performs for you.
On the multithreading issue. I have to disagree with you on that point: ITK way of cutting the image in regions is well adapted to the separable decomposition, when the lines are parallels to the axes. That was not the case for the flat morphology, but I beleive it is in for parabolic operators. I have used it to thread the implementation of the Maurer filter currently in ITK. For the Maurer filter, I get an execution time of 8.98 s (not the same computer than above) with one thread, and 4.58 s with two threads - not that bad :-).
A great contribution - as usual :-)
Don't be surprised if you see a patch appear in the repository to add the wrapitk support in the next days :-)






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Categories: | Filtering, Geometric transforms, Mathematical Morphology |
Keywords: | mathematical morphology, parabolic structuring functions, quadratic structuring functions, sharpening, distance transforms |
Toolkits: | ITK |
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![]() by Vercauteren T., Pennec X., Perchant A., Ayache N.
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![]() by Tustison N., Gee J.
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