# Latest

**URL:** https://discourse.itk.org/latest.md?page=97

[Latest](https://discourse.itk.org/latest.md) · [Categories](https://discourse.itk.org/categories.md) · [Tags](https://discourse.itk.org/tags.md)

**Page:** 98

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## [GDCMSeriesFileNames SetRecursive](https://discourse.itk.org/t/gdcmseriesfilenames-setrecursive/1211)

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**Author:** [@Athius](https://discourse.itk.org/u/Athius)\
**Replies:** 6\
**Last updated:** [August 22, 2018, 3:33pm UTC](https://discourse.itk.org/t/gdcmseriesfilenames-setrecursive/1211 "2018-08-22T15:33:41Z")

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Hello everyone, I try to read all my dicoms recursively. For this I try to use itk::GDCMSeriesFileNames class (itk version 4.13.1). itk::GDCMSeriesFileNames::Pointer nameGenerator = itk::GDCMSeriesFileNames::New(); na…

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## [RecursiveSeparableImageFilter the normal execution flow is broken.](https://discourse.itk.org/t/recursiveseparableimagefilter-the-normal-execution-flow-is-broken/1216)

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**Author:** [@denis.p.shamonin](https://discourse.itk.org/u/denis.p.shamonin)\
**Replies:** 3\
**Last updated:** [August 22, 2018, 3:20pm UTC](https://discourse.itk.org/t/recursiveseparableimagefilter-the-normal-execution-flow-is-broken/1216 "2018-08-22T15:20:37Z")

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Dear Dženan Zukić, Recently you have changed the RecursiveSeparableImageFilter for new threading support. Change-Id: I5ce9d8b965035c9716ee5b25694d39bc15ba666e Date: Wed Aug 1 12:45:38 2018 -0400 ENH: refactoring Re…

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## [BinaryImageToShapeLabelMapFilter vs. LabelImageToShapeLabelMapFilter](https://discourse.itk.org/t/binaryimagetoshapelabelmapfilter-vs-labelimagetoshapelabelmapfilter/1214)

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**Author:** [@Fijoy\_Vadakkumpadan](https://discourse.itk.org/u/Fijoy_Vadakkumpadan)\
**Replies:** 2\
**Last updated:** [August 21, 2018, 1:24pm UTC](https://discourse.itk.org/t/binaryimagetoshapelabelmapfilter-vs-labelimagetoshapelabelmapfilter/1214 "2018-08-21T13:24:08Z")

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Hello, What’s the best filter to use to compute size/shape attributes of all connected components in an image? Looking at the docs, I see two filters, LabelImageToShapeLabelMapFilter and BinaryImageToShapeLabelMapFilte…

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## [Dealing with image blocks](https://discourse.itk.org/t/dealing-with-image-blocks/1210)

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**Author:** [@tim-evain](https://discourse.itk.org/u/tim-evain)\
**Replies:** 5\
**Last updated:** [August 20, 2018, 1:55pm UTC](https://discourse.itk.org/t/dealing-with-image-blocks/1210 "2018-08-20T13:55:06Z")

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Hello folks, Recently I had to make some algorithms (C++) that deal with modifying image subregions, the sort that would have been done in a couple of lines with the easy switch to numpy and array slicing capacities in …

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## [Should I switch from SimpleITK to Python ITK?](https://discourse.itk.org/t/should-i-switch-from-simpleitk-to-python-itk/1206)

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**Author:** [@fepegar](https://discourse.itk.org/u/fepegar)\
**Replies:** 3\
**Last updated:** [August 18, 2018, 9:46pm UTC](https://discourse.itk.org/t/should-i-switch-from-simpleitk-to-python-itk/1206 "2018-08-18T21:46:12Z")

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Hi all, I’ve been using SimpleITK for some years. I have only used ITK (C++) once. I feel like a lot effort is being put on the new itk Python package. I like SimpleITK because it’s… simple. But sometimes I’ve missed so…

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## [Bug in itkHistogram.hxx leading to an endless loop](https://discourse.itk.org/t/bug-in-itkhistogram-hxx-leading-to-an-endless-loop/1190)

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**Author:** [@madsdk](https://discourse.itk.org/u/madsdk)\
**Replies:** 4\
**Last updated:** [August 16, 2018, 2:23pm UTC](https://discourse.itk.org/t/bug-in-itkhistogram-hxx-leading-to-an-endless-loop/1190 "2018-08-16T14:23:15Z")

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Hello, I have identified a bug in the binary search in itkHistogram.hxx that make a loop run forever. The lines in question are these: // Binary search for the bin where this measurement could be mid = ( end + 1 ) / 2;…

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## [Use of itkEventMacroDeclaration and itkEventMacroDefinition](https://discourse.itk.org/t/use-of-itkeventmacrodeclaration-and-itkeventmacrodefinition/1204)

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**Author:** [@Gordian](https://discourse.itk.org/u/Gordian)\
**Replies:** 0\
**Last updated:** [August 16, 2018, 7:14am UTC](https://discourse.itk.org/t/use-of-itkeventmacrodeclaration-and-itkeventmacrodefinition/1204 "2018-08-16T07:14:14Z")

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Hi, I am a little bit confused about the description of the use of itkEventMacroDeclaration and itkEventMacroDefinition: // This macro duplicates some of the declaration and definition // macro code. The purpose is to …

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## [itk-module GitHub Topic](https://discourse.itk.org/t/itk-module-github-topic/1203)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [August 15, 2018, 4:37pm UTC](https://discourse.itk.org/t/itk-module-github-topic/1203 "2018-08-15T16:37:34Z")

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Hi folks, To improve discoverability, we could add itk-module to a Remote Module repository’s GitHub Topics. Modules can then be found by clicking on the topic, which currently results in this list: https://github.com…

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## [Details of itk::RayCastInterpolateImageFunction](https://discourse.itk.org/t/details-of-itk-raycastinterpolateimagefunction/1202)

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**Author:** [@zhuangming.shen](https://discourse.itk.org/u/zhuangming.shen)\
**Replies:** 0\
**Last updated:** [August 15, 2018, 1:15am UTC](https://discourse.itk.org/t/details-of-itk-raycastinterpolateimagefunction/1202 "2018-08-15T01:15:23Z")

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Hi all, I’d like to figure out some details of itk::RayCastInterpolateImageFunction. Dose anyone know which papers/materials describe its algorithm? Thanks in advance. Regards, Zhuangming Shen

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## [Build INSTALL with Visual Studio](https://discourse.itk.org/t/build-install-with-visual-studio/1194)

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**Author:** [@Gib](https://discourse.itk.org/u/Gib)\
**Replies:** 2\
**Last updated:** [August 14, 2018, 9:12pm UTC](https://discourse.itk.org/t/build-install-with-visual-studio/1194 "2018-08-14T21:12:35Z")

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I use cmake to create the VS project for building ITK. Until now I’ve been only building the Release libraries, now I want to build and use the Debug libraries as well. It took me a while to realise that when I Build I…

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## [\[Resolved\] How to create a template from ConvertToVTK example?](https://discourse.itk.org/t/resolved-how-to-create-a-template-from-converttovtk-example/1198)

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**Author:** [@Athius](https://discourse.itk.org/u/Athius)\
**Replies:** 3\
**Last updated:** [August 14, 2018, 6:04pm UTC](https://discourse.itk.org/t/resolved-how-to-create-a-template-from-converttovtk-example/1198 "2018-08-14T18:04:14Z")

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Hello everyone, I work on Mac OS X 10.13.6 with Clang 9.1 (Apple latest version) and ITK v 4.13.0. I try to “templatize” the example ConvertToVTK. To do this, I just comment the first typedef and add some template def…

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## [ITK 4.13.1 has been released!](https://discourse.itk.org/t/itk-4-13-1-has-been-released/1195)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [August 13, 2018, 7:42pm UTC](https://discourse.itk.org/t/itk-4-13-1-has-been-released/1195 "2018-08-13T19:42:32Z")

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On behalf of the Insight Segmentation and Registration Toolkit (ITK) Community, we are happy to announce the release of ITK 4.13.1! ITK is an open-source, cross-platform library for multidimensional image analysis. Rel…

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## [ITK 4.12.2 has been released!](https://discourse.itk.org/t/itk-4-12-2-has-been-released/23)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [September 14, 2017, 7:18pm UTC](https://discourse.itk.org/t/itk-4-12-2-has-been-released/23 "2017-09-14T19:18:53Z")

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On behalf of the Insight Segmentation and Registration Toolkit (ITK) Community, we are happy to announce the release of ITK 4.12.2! ITK is an open-source, cross-platform library for multidimensional image analysis. Dow…

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## [ITK 5.0 Alpha 2: Performance](https://discourse.itk.org/t/itk-5-0-alpha-2-performance/959)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [May 29, 2018, 1:50pm UTC](https://discourse.itk.org/t/itk-5-0-alpha-2-performance/959 "2018-05-29T13:50:10Z")

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ITK 5.0 Alpha 2 is ready for testing! Source code (zip) Source code (tar.gz) Major improvements in ITK 5.0 include a switch to C++11 language standard, improved performance, and cleanup of legacy code. More informatio…

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## [ITK 4.13 has been released!](https://discourse.itk.org/t/itk-4-13-has-been-released/549)

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**Author:** [@fbudin](https://discourse.itk.org/u/fbudin)\
**Replies:** 0\
**Last updated:** [December 22, 2017, 7:27pm UTC](https://discourse.itk.org/t/itk-4-13-has-been-released/549 "2017-12-22T19:27:35Z")

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The Insight Segmentation and Registration Toolkit (ITK), is an open-source, cross-platform library for multidimensional image analysis. On behalf of the Insight Toolkit community, we are proud to announce that ITK 4.13.0 …

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## [ITK 4.13.0 Python wrapping does not compile with VS 2017 15.7.4 with V14.14 tools](https://discourse.itk.org/t/itk-4-13-0-python-wrapping-does-not-compile-with-vs-2017-15-7-4-with-v14-14-tools/1052)

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**Author:** [@Sophonet](https://discourse.itk.org/u/Sophonet)\
**Replies:** 6\
**Last updated:** [August 13, 2018, 2:48pm UTC](https://discourse.itk.org/t/itk-4-13-0-python-wrapping-does-not-compile-with-vs-2017-15-7-4-with-v14-14-tools/1052 "2018-08-13T14:48:06Z")

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Hi - after having upgraded VS 2017 to 15.7.4 a few days ago, ITK 4.13.0 with Python wrapping does not compile anymore - there are tons of errors pointing to syntactic errors in MSVC/14.14.26428/include/… It seems that th…

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## [Updating ITK's HDF5](https://discourse.itk.org/t/updating-itks-hdf5/472)

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**Author:** [@seanm](https://discourse.itk.org/u/seanm)\
**Replies:** 50\
**Last updated:** [August 10, 2018, 6:37pm UTC](https://discourse.itk.org/t/updating-itks-hdf5/472 "2018-08-10T18:37:47Z")

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Hi all, ITK master includes HDF5 1.8.17, and 1.8.20 was released today so I thought I’d try to update it. But the current scripts seem to be out of date. HDF switched from svn to git in late 2016 or early 2017, ie sin…

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## [Bug in UpdateFromUpstream.sh](https://discourse.itk.org/t/bug-in-updatefromupstream-sh/1191)

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**Author:** [@gdevenyi](https://discourse.itk.org/u/gdevenyi)\
**Replies:** 4\
**Last updated:** [August 10, 2018, 6:36pm UTC](https://discourse.itk.org/t/bug-in-updatefromupstream-sh/1191 "2018-08-10T18:36:04Z")

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Not sure exactly where the bug lies, but I just triggered a bug trying to use UpdateFromUpstream.sh. Essentially, it seems to be triggered if your CWD when you execute the script has a symlink as part of the path, in my…

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## [Warning "no valid points..." with Powell optimizer and VersorRigid3DTransform](https://discourse.itk.org/t/warning-no-valid-points-with-powell-optimizer-and-versorrigid3dtransform/1161)

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**Author:** [@aharris](https://discourse.itk.org/u/aharris)\
**Replies:** 3\
**Last updated:** [August 8, 2018, 8:25pm UTC](https://discourse.itk.org/t/warning-no-valid-points-with-powell-optimizer-and-versorrigid3dtransform/1161 "2018-08-08T20:25:34Z")

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I’m hoping someone can have a look at my code and see where I’m going wrong. I had this warning (“no valid points…” is all I can read in the output window and the scroll bar at the bottom doesn’t function) when I first …

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## [Review module fate...](https://discourse.itk.org/t/review-module-fate/1186)

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**Author:** [@blowekamp](https://discourse.itk.org/u/blowekamp)\
**Replies:** 1\
**Last updated:** [August 7, 2018, 1:46pm UTC](https://discourse.itk.org/t/review-module-fate/1186 "2018-08-07T13:46:27Z")

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Before ITKv5 comes out we should figure out what to do with the Review module, and the classes in it. LevelSets - There are a group of level set filters in the Review directory for multiphase and ChanAndVese live-sets…

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## [ImageRegistrationMethodv4 VirtualImage with SparseSampling](https://discourse.itk.org/t/imageregistrationmethodv4-virtualimage-with-sparsesampling/1159)

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**Author:** [@blowekamp](https://discourse.itk.org/u/blowekamp)\
**Replies:** 6\
**Last updated:** [August 6, 2018, 6:08pm UTC](https://discourse.itk.org/t/imageregistrationmethodv4-virtualimage-with-sparsesampling/1159 "2018-08-06T18:08:29Z")

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When using the ImageRegistrationMethod with a virtual image and a sampling strategy, there is a serious problem with the spaces. -\>The ImageRegistrationMethod generate a sampled point set by iterating on the virtual ima…

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## [clang -Wunreachable-code-break and -Wself-assign-field](https://discourse.itk.org/t/clang-wunreachable-code-break-and-wself-assign-field/1181)

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**Author:** [@seanm](https://discourse.itk.org/u/seanm)\
**Replies:** 5\
**Last updated:** [August 6, 2018, 5:47pm UTC](https://discourse.itk.org/t/clang-wunreachable-code-break-and-wself-assign-field/1181 "2018-08-06T17:47:28Z")

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Hi all, Two warnings on my bots I’m not sure what you all prefer to do about: warning: ‘break’ will never be executed \[-Wunreachable-code-break\] case itk::ImageIOBase::DOUBLE: std::cerr \<\< "Hashing is not s…

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## [Problem linking SimpleITK with ImageJ](https://discourse.itk.org/t/problem-linking-simpleitk-with-imagej/1156)

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**Author:** [@tia](https://discourse.itk.org/u/tia)\
**Replies:** 8\
**Last updated:** [August 3, 2018, 11:51pm UTC](https://discourse.itk.org/t/problem-linking-simpleitk-with-imagej/1156 "2018-08-03T23:51:33Z")

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Hello, I apologize in advance for such an elementary question but I am having a surprising amount of trouble getting SimpleITK to open ImageJ as a viewer. I have installed python on my Windows 7 work computer using Ana…

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## [Inverse displacement field](https://discourse.itk.org/t/inverse-displacement-field/580)

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**Author:** [@Ray](https://discourse.itk.org/u/Ray)\
**Replies:** 3\
**Last updated:** [August 6, 2018, 5:18pm UTC](https://discourse.itk.org/t/inverse-displacement-field/580 "2018-08-06T17:18:40Z")

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Given a displacement field (not a transform), is there a method that can be used to compute its inverse displacement field? Thanks, -Ray

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## [Create RicianMixtureModelComponent statistical module](https://discourse.itk.org/t/create-ricianmixturemodelcomponent-statistical-module/1177)

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**Author:** [@mer17mm](https://discourse.itk.org/u/mer17mm)\
**Replies:** 0\
**Last updated:** [August 3, 2018, 7:54pm UTC](https://discourse.itk.org/t/create-ricianmixturemodelcomponent-statistical-module/1177 "2018-08-03T19:54:53Z")

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Hi, Is anyone who I can speak with about a code I want to implement regarding a Rician classifier for Mixture model component? I am trying to understand better the structure of the GaussianMixtureModelComponent and Gaus…

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## [ITK OutputWindow on windows](https://discourse.itk.org/t/itk-outputwindow-on-windows/1175)

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**Author:** [@blowekamp](https://discourse.itk.org/u/blowekamp)\
**Replies:** 4\
**Last updated:** [August 3, 2018, 6:16pm UTC](https://discourse.itk.org/t/itk-outputwindow-on-windows/1175 "2018-08-03T18:16:46Z")

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On MS Windows the current default behavior is to log certain things to a “window” as opposed to std::err: I think it makes more since to opt into a GUI. std::err seems to work fine with the modern visual studios too,…

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## [GTest timeouts](https://discourse.itk.org/t/gtest-timeouts/1160)

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**Author:** [@dzenanz](https://discourse.itk.org/u/dzenanz)\
**Replies:** 5\
**Last updated:** [August 2, 2018, 3:34pm UTC](https://discourse.itk.org/t/gtest-timeouts/1160 "2018-08-02T15:34:29Z")

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I just updated ninja version 1.5.3 -\> 1.8.2 on dash5 (osx build machine for continuous integration testing). As the version was so old that might just be the reason for those frequent GTest timeouts. Let’s wait and see.

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## [Using SimpleITK for stitching medical volumes with overlap](https://discourse.itk.org/t/using-simpleitk-for-stitching-medical-volumes-with-overlap/1174)

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**Author:** [@malekosh](https://discourse.itk.org/u/malekosh)\
**Replies:** 1\
**Last updated:** [August 2, 2018, 1:31pm UTC](https://discourse.itk.org/t/using-simpleitk-for-stitching-medical-volumes-with-overlap/1174 "2018-08-02T13:31:52Z")

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Hello All, I am trying to stitch 2 MRI scans which have a region of overlap by first registering them together using Elastix Image Filter. Then in order to add (stitch) them together I have to align them both on the sam…

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## [Smoothing with a mask (in general, and specifically applied to registration)](https://discourse.itk.org/t/smoothing-with-a-mask-in-general-and-specifically-applied-to-registration/1164)

<div class="topic-metadata">

**Author:** [@gdevenyi](https://discourse.itk.org/u/gdevenyi)\
**Replies:** 3\
**Last updated:** [July 31, 2018, 8:10pm UTC](https://discourse.itk.org/t/smoothing-with-a-mask-in-general-and-specifically-applied-to-registration/1164 "2018-07-31T20:10:14Z")

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There is an interesting approximation for smoothing using a mask: s(X with mask) = s(Mask\*X)/s(Mask) For smoothing, particularly in registration pipelines, this can reduce the computation needed, and focus registration…

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## [LineIterator](https://discourse.itk.org/t/lineiterator/1170)

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**Author:** [@crossmanith](https://discourse.itk.org/u/crossmanith)\
**Replies:** 2\
**Last updated:** [July 31, 2018, 7:05pm UTC](https://discourse.itk.org/t/lineiterator/1170 "2018-07-31T19:05:01Z")

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I’d like to draw cross hairs in an image. Currently I’m using 4 LineIterators. Is there a way to reuse one iterator and specify new start and end indices for each of the four lines?

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