# Latest

**URL:** https://discourse.itk.org/latest.md?page=100

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

**Page:** 101

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## [Call for Papers - MICCAI Workshop on Shape Analysis in Medical Imaging (SHAPEMI)](https://discourse.itk.org/t/call-for-papers-miccai-workshop-on-shape-analysis-in-medical-imaging-shapemi/885)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 1\
**Last updated:** [June 15, 2018, 10:21am UTC](https://discourse.itk.org/t/call-for-papers-miccai-workshop-on-shape-analysis-in-medical-imaging-shapemi/885 "2018-06-15T10:21:51Z")

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MICCAI SHAPEMI Workshop on Shape Analysis in Medical Imaging Granada, Spain, Sep 20th, 2018 https://shapemi.github.io/ (\*) Description We gladly announce the workshop for Shape Analysis in Medical Imaging (SHAPEMI…

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## [Getting Dicom file paths of study from DCMTK archive](https://discourse.itk.org/t/getting-dicom-file-paths-of-study-from-dcmtk-archive/1007)

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**Author:** [@benjaminhon](https://discourse.itk.org/u/benjaminhon)\
**Replies:** 0\
**Last updated:** [June 15, 2018, 9:59am UTC](https://discourse.itk.org/t/getting-dicom-file-paths-of-study-from-dcmtk-archive/1007 "2018-06-15T09:59:55Z")

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Hi all, Currently, i am trying to download files from a PACS and then open them from ITK. I am starting a DCMQRSCP server, and using MOVESCU to download images into my local DCMQRSCP archive. However, DCMTK stores the …

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## [Get zero size when read an image](https://discourse.itk.org/t/get-zero-size-when-read-an-image/1005)

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**Author:** [@Lianli\_Liu](https://discourse.itk.org/u/Lianli_Liu)\
**Replies:** 1\
**Last updated:** [June 15, 2018, 9:05am UTC](https://discourse.itk.org/t/get-zero-size-when-read-an-image/1005 "2018-06-15T09:05:28Z")

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I tried to use the following code to read an image #include “itkImageFileReader.h” #include “itkImage.h” int main(int argc, char \* argv\[\]){ const unsigned int Dimension = 3; typedef float PixelType; …

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## [Compile landmark based registration](https://discourse.itk.org/t/compile-landmark-based-registration/995)

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**Author:** [@Lianli\_Liu](https://discourse.itk.org/u/Lianli_Liu)\
**Replies:** 1\
**Last updated:** [June 13, 2018, 11:21am UTC](https://discourse.itk.org/t/compile-landmark-based-registration/995 "2018-06-13T11:21:52Z")

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I am trying to compile this WiKi example https://itk.org/Wiki/ITK/Examples/Registration/LandmarkBasedTransformInitializer, but got several errors such as error: variable or field ‘CreateFixedImage’ declared void void …

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## [GCC 8.1](https://discourse.itk.org/t/gcc-8-1/1004)

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**Author:** [@hmaarrfk](https://discourse.itk.org/u/hmaarrfk)\
**Replies:** 2\
**Last updated:** [June 14, 2018, 8:49pm UTC](https://discourse.itk.org/t/gcc-8-1/1004 "2018-06-14T20:49:31Z")

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Would it be possible to add a definition to the file ITK/Modules/ThirdParty/VNL/src/vxl/vcl/vcl\_compiler.h to support GCC 8.1 It was pretty easy to fix manually, and the build seems to have succeeded with my small hac…

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## [Updated input during runtime](https://discourse.itk.org/t/updated-input-during-runtime/998)

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**Author:** [@Gordian](https://discourse.itk.org/u/Gordian)\
**Replies:** 3\
**Last updated:** [June 14, 2018, 8:30pm UTC](https://discourse.itk.org/t/updated-input-during-runtime/998 "2018-06-14T20:30:42Z")

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Hello, i have a question regarding dynamic input into a running pipeline that takes a while to finish. If I start a registration pipeline, it is possible to update the input (e.g. the input source spawned a new image). …

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## [Bspline control points clarification](https://discourse.itk.org/t/bspline-control-points-clarification/981)

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**Author:** [@adlerjohn557](https://discourse.itk.org/u/adlerjohn557)\
**Replies:** 4\
**Last updated:** [June 13, 2018, 7:31pm UTC](https://discourse.itk.org/t/bspline-control-points-clarification/981 "2018-06-13T19:31:23Z")

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Hi, I’m trying to understand the underlying logic regarding control points in BSplineTransformInitializer. Specifically, the information regarding the control points’ location in the space. I have searched here and foun…

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## [Initializing itk::vector or numeric type with the same command](https://discourse.itk.org/t/initializing-itk-vector-or-numeric-type-with-the-same-command/984)

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**Author:** [@cyril.mory](https://discourse.itk.org/u/cyril.mory)\
**Replies:** 7\
**Last updated:** [June 12, 2018, 1:15pm UTC](https://discourse.itk.org/t/initializing-itk-vector-or-numeric-type-with-the-same-command/984 "2018-06-12T13:15:37Z")

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Hello, I would like one of my filters to work with ImageType = itk::Image\<float, 3\> as well as with ImageType = itk::Image\<itk::Vector\<float, 5\>, 3\>. Computation on the pixels only involves operators that are overloaded…

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## [scale parameters optimizer registration](https://discourse.itk.org/t/scale-parameters-optimizer-registration/990)

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**Author:** [@pdeman](https://discourse.itk.org/u/pdeman)\
**Replies:** 0\
**Last updated:** [June 11, 2018, 10:17am UTC](https://discourse.itk.org/t/scale-parameters-optimizer-registration/990 "2018-06-11T10:17:05Z")

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Hi, I have a code working with Normalized Correlation for the coregistration. The optimizer is set like that (from an example I found): Superclass::m\_Optimizer-\>MinimizeOn(); Superclass::m\_Optimizer-\>SetMaximumStepLe…

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## [\[SOLVED\] Build RTK as external module for another module](https://discourse.itk.org/t/solved-build-rtk-as-external-module-for-another-module/986)

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**Author:** [@Gordian](https://discourse.itk.org/u/Gordian)\
**Replies:** 13\
**Last updated:** [June 9, 2018, 9:27pm UTC](https://discourse.itk.org/t/solved-build-rtk-as-external-module-for-another-module/986 "2018-06-09T21:27:26Z")

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Hi, After figuring out how to create a new module I wanted to create some tests for the module using the testdriver provided by the module template. I added an external module (RTK) and this works fine. An error occur…

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## [itk python blocking pyqt gui](https://discourse.itk.org/t/itk-python-blocking-pyqt-gui/983)

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**Author:** [@benjaminhon](https://discourse.itk.org/u/benjaminhon)\
**Replies:** 2\
**Last updated:** [June 11, 2018, 8:44am UTC](https://discourse.itk.org/t/itk-python-blocking-pyqt-gui/983 "2018-06-11T08:44:43Z")

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Hi, I’ve been trying to run itk functions in a separate thread pool, so far printing the current thread from the function shows that it is not being run on the main thread. However, running itk functions on a separate t…

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## [active contours for a specific image](https://discourse.itk.org/t/active-contours-for-a-specific-image/972)

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**Author:** [@SylvainArd](https://discourse.itk.org/u/SylvainArd)\
**Replies:** 1\
**Last updated:** [June 9, 2018, 5:31pm UTC](https://discourse.itk.org/t/active-contours-for-a-specific-image/972 "2018-06-09T17:31:09Z")

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Hello, I have this image in input : http://sylvain-ard.fr/temp/CONTOURS\_LEAFLET1.jpg a leaf so and I want to apply this algorithm : https://itk.org/ITKExamples/src/Segmentation/LevelSets/SegmentWithGeodesicActiveCont…

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## [Get values of image within sphere spatial object](https://discourse.itk.org/t/get-values-of-image-within-sphere-spatial-object/989)

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**Author:** [@G\_Tom](https://discourse.itk.org/u/G_Tom)\
**Replies:** 0\
**Last updated:** [June 9, 2018, 1:13pm UTC](https://discourse.itk.org/t/get-values-of-image-within-sphere-spatial-object/989 "2018-06-09T13:13:42Z")

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Hi all, Here is what I need, I have and image , could be 2d or 3d, I want to extract all values of image lying in a spherical region defined by a spatial object sphere of given radius. Thanks

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## [Build errors : ITK Module Python Wrapping](https://discourse.itk.org/t/build-errors-itk-module-python-wrapping/853)

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**Author:** [@T4mmi](https://discourse.itk.org/u/T4mmi)\
**Replies:** 26\
**Last updated:** [June 8, 2018, 1:54pm UTC](https://discourse.itk.org/t/build-errors-itk-module-python-wrapping/853 "2018-06-08T13:54:26Z")

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Hi everyone, Image processing scientist, I’m pretty used to ITK pipelines. However, I’m new to ITK development… Recently converted to Python (really nice for scripting/prototyping) I’m trying to wrap some Insight Journ…

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## [Multithreading - Backward incompatibilities](https://discourse.itk.org/t/multithreading-backward-incompatibilities/977)

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**Author:** [@simon.rit](https://discourse.itk.org/u/simon.rit)\
**Replies:** 8\
**Last updated:** [June 8, 2018, 1:48pm UTC](https://discourse.itk.org/t/multithreading-backward-incompatibilities/977 "2018-06-08T13:48:36Z")

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Hi, I tried to compile the RTK code with ITK v5.0a02. You have made changes which seem to be backward incompatible, not only at compilation (e.g. these errors), but also at execution (e.g., this test). I assume this is…

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## [Threading refactoring renames](https://discourse.itk.org/t/threading-refactoring-renames/967)

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**Author:** [@dzenanz](https://discourse.itk.org/u/dzenanz)\
**Replies:** 4\
**Last updated:** [June 7, 2018, 4:49pm UTC](https://discourse.itk.org/t/threading-refactoring-renames/967 "2018-06-07T16:49:58Z")

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In this patch (part of another threading refactoring pass), @blowekamp suggested renaming threads into workers, partly to make a distinction with the old concept of threads, partly to use a standard thread-pool terminolo…

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## [Issues with bounded deformable registration \[SOLVED\]](https://discourse.itk.org/t/issues-with-bounded-deformable-registration-solved/964)

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**Author:** [@BradG89](https://discourse.itk.org/u/BradG89)\
**Replies:** 1\
**Last updated:** [June 7, 2018, 3:13pm UTC](https://discourse.itk.org/t/issues-with-bounded-deformable-registration-solved/964 "2018-06-07T15:13:26Z")

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Hello, I’ve been utilizing a module in an image processing program 3D Slicer and it has the ability to perform BSpline Registration when the registration is unbounded or when the image’s physical coordinates can move wi…

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## [Frequency Iterators: Iterating over different Fourier Transform layouts and images in the frequency domain](https://discourse.itk.org/t/frequency-iterators-iterating-over-different-fourier-transform-layouts-and-images-in-the-frequency-domain/987)

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**Author:** [@phcerdan](https://discourse.itk.org/u/phcerdan)\
**Replies:** 0\
**Last updated:** [June 6, 2018, 3:08pm UTC](https://discourse.itk.org/t/frequency-iterators-iterating-over-different-fourier-transform-layouts-and-images-in-the-frequency-domain/987 "2018-06-06T15:08:37Z")

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Initially developed for the external ITKIsotropicWavelets module, I submitted a patch to integrate them into ITK 5 with the aim of re-using them in other modules. Any comment about the implementation is welcome, please j…

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## [registration of 50 3D scans in order to create an average scan](https://discourse.itk.org/t/registration-of-50-3d-scans-in-order-to-create-an-average-scan/985)

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**Author:** [@vmatyas](https://discourse.itk.org/u/vmatyas)\
**Replies:** 2\
**Last updated:** [June 6, 2018, 9:05am UTC](https://discourse.itk.org/t/registration-of-50-3d-scans-in-order-to-create-an-average-scan/985 "2018-06-06T09:05:34Z")

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Hi All, I will have 6x50 3D scans of feet. I need to register the 50 scans in each group so the corresponding vertices align so I can calculate average foot scan for each group. Any ideas how I can do non-rigid transfo…

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## [channel IRC on ITK](https://discourse.itk.org/t/channel-irc-on-itk/973)

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**Author:** [@SylvainArd](https://discourse.itk.org/u/SylvainArd)\
**Replies:** 2\
**Last updated:** [June 1, 2018, 2:43pm UTC](https://discourse.itk.org/t/channel-irc-on-itk/973 "2018-06-01T14:43:07Z")

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Hi, Is exists a channel IRC on ITK and if yes which ? Thank you Bye

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## [Writing tiff to a memory buffer](https://discourse.itk.org/t/writing-tiff-to-a-memory-buffer/970)

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**Author:** [@ocairncross](https://discourse.itk.org/u/ocairncross)\
**Replies:** 0\
**Last updated:** [June 1, 2018, 7:25am UTC](https://discourse.itk.org/t/writing-tiff-to-a-memory-buffer/970 "2018-06-01T07:25:16Z")

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Hello, I’d like to write an image in tiff format to a memory buffer (not a file) so that I can pass it off to a server using libcurl. How do I go about this? Thanks Ollie.

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## [multiple constructor, how to do with the factory method and itknewmacro](https://discourse.itk.org/t/multiple-constructor-how-to-do-with-the-factory-method-and-itknewmacro/968)

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**Author:** [@pdeman](https://discourse.itk.org/u/pdeman)\
**Replies:** 1\
**Last updated:** [May 31, 2018, 9:14pm UTC](https://discourse.itk.org/t/multiple-constructor-how-to-do-with-the-factory-method-and-itknewmacro/968 "2018-05-31T21:14:19Z")

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Hi, I have never used factory method before and I am a little lost. I want to define a second constructor with different input parameters. the constructor is called when calling ::New() ? how do I pass the constructo…

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## [DICOM data \<--\> buffer using ITK/GDCM](https://discourse.itk.org/t/dicom-data-buffer-using-itk-gdcm/962)

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**Author:** [@Fijoy\_Vadakkumpadan](https://discourse.itk.org/u/Fijoy_Vadakkumpadan)\
**Replies:** 0\
**Last updated:** [May 30, 2018, 4:06pm UTC](https://discourse.itk.org/t/dicom-data-buffer-using-itk-gdcm/962 "2018-05-30T16:06:20Z")

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Hello, I need to write/read arbitrary DICOM Data Sets and Data Elements to/from memory buffers to facilitate data exchange between nodes in a distributed application. The Data Elements I’m interested in include Sequence…

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## [bundling ITK/VTK into a python app with pyinstaller for macOS](https://discourse.itk.org/t/bundling-itk-vtk-into-a-python-app-with-pyinstaller-for-macos/956)

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**Author:** [@junon](https://discourse.itk.org/u/junon)\
**Replies:** 0\
**Last updated:** [May 28, 2018, 7:45am UTC](https://discourse.itk.org/t/bundling-itk-vtk-into-a-python-app-with-pyinstaller-for-macos/956 "2018-05-28T07:45:48Z")

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Hi there, Does anyone know how to do this properly? I’ve built itk 4.13.0 and vtk 8.1.0 and input all dylib, so files into the binary section of the pyinstaller spec and yet the bundled executable is still unable to run…

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## [Problem with the stochastic fractal filter](https://discourse.itk.org/t/problem-with-the-stochastic-fractal-filter/855)

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**Author:** [@pfreire](https://discourse.itk.org/u/pfreire)\
**Replies:** 7\
**Last updated:** [May 28, 2018, 5:37pm UTC](https://discourse.itk.org/t/problem-with-the-stochastic-fractal-filter/855 "2018-05-28T17:37:12Z")

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Hello, everyone! I’m trying to make use of the Stochastic Fractal Dimension Image Filter, but I’ve been unable to get any results in 2D or 3D images. All the outputs are blank (actually, black). Could anyone please poin…

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## [label map overlay .. I dont' understand the problem ?](https://discourse.itk.org/t/label-map-overlay-i-dont-understand-the-problem/950)

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**Author:** [@rcatwood](https://discourse.itk.org/u/rcatwood)\
**Replies:** 4\
**Last updated:** [May 25, 2018, 6:35pm UTC](https://discourse.itk.org/t/label-map-overlay-i-dont-understand-the-problem/950 "2018-05-25T18:35:35Z")

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For some reason the LabelMapOverlay doesn’t work on my label map created from the ChangeLabel filter. I also tried running it directly on the output of ConnectedComponent() with the same result. What is the problem? how…

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## [ViewImage in Python](https://discourse.itk.org/t/viewimage-in-python/951)

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**Author:** [@phcerdan](https://discourse.itk.org/u/phcerdan)\
**Replies:** 0\
**Last updated:** [May 25, 2018, 4:16pm UTC](https://discourse.itk.org/t/viewimage-in-python/951 "2018-05-25T16:16:34Z")

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With the module ‘ITKVtkGlue’ wrapped the following script works to visualize images without the need for external software in python: import itk PixelType = itk.UC Dimension = 3 ImageType = itk.Image\[PixelType, Dimensio…

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## [Python sitk ExtractImageFilter -- basic usage help??](https://discourse.itk.org/t/python-sitk-extractimagefilter-basic-usage-help/949)

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**Author:** [@rcatwood](https://discourse.itk.org/u/rcatwood)\
**Replies:** 3\
**Last updated:** [May 25, 2018, 2:36pm UTC](https://discourse.itk.org/t/python-sitk-extractimagefilter-basic-usage-help/949 "2018-05-25T14:36:00Z")

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I’m sorry if I’m abit thick, but this doesn’t work. This is the distributed SimpleITK – updated yesterday , in the Python 2.7 version on Linux SimpleITK Version: 1.1.0 (ITK 4.13) Compiled: Mar 26 2018 15:04:35 I trie…

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## [No SimpleITK GeodesicActiveContourShapePriorLevelSetImageFilter](https://discourse.itk.org/t/no-simpleitk-geodesicactivecontourshapepriorlevelsetimagefilter/947)

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**Author:** [@ibr](https://discourse.itk.org/u/ibr)\
**Replies:** 2\
**Last updated:** [May 24, 2018, 7:21pm UTC](https://discourse.itk.org/t/no-simpleitk-geodesicactivecontourshapepriorlevelsetimagefilter/947 "2018-05-24T19:21:14Z")

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Dear all, I couldn’t find a SimpleITK filter of GeodesicActiveContourShapePriorLevelSetImageFilter. I only found GeodesicActiveContourLevelSetImageFilter which does not use shape information. If it is not implemented,…

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## [Reading images via SCIFIO, handle 5-D images](https://discourse.itk.org/t/reading-images-via-scifio-handle-5-d-images/918)

<div class="topic-metadata">

**Author:** [@blowekamp](https://discourse.itk.org/u/blowekamp)\
**Replies:** 2\
**Last updated:** [May 24, 2018, 5:49pm UTC](https://discourse.itk.org/t/reading-images-via-scifio-handle-5-d-images/918 "2018-05-24T17:49:47Z")

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I am trying to read some light microscopy images. So I compiled SimpleITK with the SCIFIO module: cmake -DModule\_SCIFIO:BOOL=ON -G Ninja ~/src/SimpleITK/Superbuild Then I did the following: import SimpleITK as sitk re…

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