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Non local means filter for ImageJ
The description text calls the algorithm "denosing". I think it should be "denoising".
Applying the filter with default settings (+auto) to image attached give the following exception:
(Fiji Is Just) ImageJ 2.0.0-rc-43/1.50e; Java 1.6.0_24 [64-bit]; Linux 4.2.5-1-ARCH; 147MB of 3179MB (4%)
java.lang.ArrayIndexOutOfBoundsException: 856375
at de.biomedical_imaging.ij.nlMeansPlugin.NLMeansDenoising_.expandImage(NLMeansDenoising_.java:454)
at de.biomedical_imaging.ij.nlMeansPlugin.NLMeansDenoising_.NLMeansDenoising(NLMeansDenoising_.java:142)
at de.biomedical_imaging.ij.nlMeansPlugin.NLMeansDenoising_.run(NLMeansDenoising_.java:122)
at ij.plugin.filter.PlugInFilterRunner.processOneImage(PlugInFilterRunner.java:263)
at ij.plugin.filter.PlugInFilterRunner.(PlugInFilterRunner.java:112)
at ij.IJ.runUserPlugIn(IJ.java:214)
at ij.IJ.runPlugIn(IJ.java:176)
at ij.Executer.runCommand(Executer.java:136)
at ij.Executer.run(Executer.java:65)
at java.lang.Thread.run(Thread.java:662)
Check the possibility to speed up the algorithm using integral images:
https://de.wikipedia.org/wiki/Integralbild
If I apply the nl-mean on images (32bit float) containing values between 0 and 1 the resulting image contains only zeros. If I multiply my image before with a large number it works fine.
Is there an internal casting to integers?
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