David, This filter was integrated in to ITK [1].
It handles the case where the image size is not a factor of the shrinkFactor, by truncating, and changing the image's physical extent. The doxygen page illustrates how this occurs. Are you using the ITKv4 registration framework? I am curious how you are integrating this multi-scale feature into the framework. [1] http://www.itk.org/Doxygen/html/classitk_1_1BinShrinkImageFilter.html On Oct 15, 2015, at 3:35 PM, David Burns <david.mo.bu...@gmail.com> wrote: > Thanks Matt - > > You are correct. Very similar. I will not post mine in that case. > > Best > David > > On 10/15/2015 03:17 PM, Matt McCormick wrote: >> Hi David, >> >> Thanks for contributing to ITK. >> >> It sounds like this filter does the same as the BinShrinkImageFilter?: >> >> http://www.insight-journal.org/browse/publication/912 >> >> Matt >> >> On Thu, Oct 15, 2015 at 2:48 PM, David Burns <david.mo.bu...@gmail.com> >> wrote: >>> Dear Insight Developers, >>> >>> I have developed an image filter that may be useful to the community. Please >>> let me know if you think this is the case, and I will submit it to the >>> Journal. >>> >>> The filter produces a subsampled version of the input image, where the >>> output image has the same output dimensions (Size[i]*Spacing[i]) but with >>> the number of pixels (Size[i]) scaled down by a factor (factor[i]) across >>> the dimensions. The pixels of the output image are an average over the input >>> pixels they overlap. The filter verifies/ensures that factor[i] is an exact >>> factor of the input image Size[i], so that the image properties remain >>> unchanged by the filter. >>> >>> I found this to be useful for my registration task to produce a lower >>> resolution image very quickly, without needing to use itk:: >>> ResampleImageFilter, interpolation or smoothing. >>> >>> I've attached a screenshot of an xray, subsampled / averaged by a factor of >>> 4 in x and y. Let me know your thoughts? >>> >>> Thanks >>> David Burns >>> >>> _______________________________________________ >>> Powered by www.kitware.com >>> >>> Visit other Kitware open-source projects at >>> http://www.kitware.com/opensource/opensource.html >>> >>> Kitware offers ITK Training Courses, for more information visit: >>> http://kitware.com/products/protraining.php >>> >>> Please keep messages on-topic and check the ITK FAQ at: >>> http://www.itk.org/Wiki/ITK_FAQ >>> >>> Follow this link to subscribe/unsubscribe: >>> http://public.kitware.com/mailman/listinfo/insight-developers >>> > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Kitware offers ITK Training Courses, for more information visit: > http://kitware.com/products/protraining.php > > Please keep messages on-topic and check the ITK FAQ at: > http://www.itk.org/Wiki/ITK_FAQ > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/insight-developers _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/insight-developers
