# Latest

**URL:** https://discourse.itk.org/latest.md?page=16

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

**Page:** 17

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## [Is it possible to propagate some information to upstream pipeline?](https://discourse.itk.org/t/is-it-possible-to-propagate-some-information-to-upstream-pipeline/6381)

<div class="topic-metadata">

**Author:** [@remicres](https://discourse.itk.org/u/remicres)\
**Replies:** 5\
**Last updated:** [January 22, 2024, 9:12pm UTC](https://discourse.itk.org/t/is-it-possible-to-propagate-some-information-to-upstream-pipeline/6381 "2024-01-22T21:12:34Z")

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Hello, Is it possible to propagate some kind of dynamic (“current-requested-region-related”) information, from a mapper to the source through the filters of a pipeline? My use case is the following one reader, a pipe…

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## [ITK 5.4 Release Candidate 1 available for testing](https://discourse.itk.org/t/itk-5-4-release-candidate-1-available-for-testing/6107)

<div class="topic-metadata">

**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 2\
**Last updated:** [January 22, 2024, 9:00pm UTC](https://discourse.itk.org/t/itk-5-4-release-candidate-1-available-for-testing/6107 "2024-01-22T21:00:04Z")

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ITK 5.4 Release Candidate 1: C++17 We are happy to announce the Insight Toolkit (ITK) 5.4 Release Candidate 1 is available for testing! :tada: ITK is an open-source, cross-platform toolkit for N-dimensional scientific im…

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## [Surface Closing in Breast Segmentation from MRI Images](https://discourse.itk.org/t/surface-closing-in-breast-segmentation-from-mri-images/6403)

<div class="topic-metadata">

**Author:** [@Miri\_Trope](https://discourse.itk.org/u/Miri_Trope)\
**Replies:** 3\
**Last updated:** [January 21, 2024, 11:50pm UTC](https://discourse.itk.org/t/surface-closing-in-breast-segmentation-from-mri-images/6403 "2024-01-21T23:50:42Z")

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Hello everyone, I’m currently facing an issue in obtaining a closed surface for the segmentation output of the attached MRI breast image. The algorithm’s objective is to segment the breast (body). As you can see, the sur…

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## [DICOMOrientImageFilter in C#](https://discourse.itk.org/t/dicomorientimagefilter-in-c/6400)

<div class="topic-metadata">

**Author:** [@Toru\_Hironaka](https://discourse.itk.org/u/Toru_Hironaka)\
**Replies:** 2\
**Last updated:** [January 18, 2024, 12:01am UTC](https://discourse.itk.org/t/dicomorientimagefilter-in-c/6400 "2024-01-18T00:01:35Z")

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I installed SimpleITK-1.2.4-CSharp-win64-x64, but I could not find DICOMOrientImageFilter. Is this class only available in C++? or Do I have to build SimpleITK source to install?

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## [Inconsistent results using SimpleITK ChangeLabelLabelMap](https://discourse.itk.org/t/inconsistent-results-using-simpleitk-changelabellabelmap/6392)

<div class="topic-metadata">

**Author:** [@drusmanbashir](https://discourse.itk.org/u/drusmanbashir)\
**Replies:** 1\
**Last updated:** [January 16, 2024, 2:32pm UTC](https://discourse.itk.org/t/inconsistent-results-using-simpleitk-changelabellabelmap/6392 "2024-01-16T14:32:28Z")

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Hi I use SimpleITK python, and this is issue is specific to the python wrapper. I frequently use loops to create remapping dictionary for labelmaps. However, I get an error from ITK :slight\_smile: in method 'ChangeLab…

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## [ITK 5.3.0 / 5.4rc build errors Shared libs / Python Wrappings / ITKVtkGlue / VS 2022 Win11](https://discourse.itk.org/t/itk-5-3-0-5-4rc-build-errors-shared-libs-python-wrappings-itkvtkglue-vs-2022-win11/6327)

<div class="topic-metadata">

**Author:** [@Sophonet](https://discourse.itk.org/u/Sophonet)\
**Replies:** 8\
**Last updated:** [January 13, 2024, 10:35am UTC](https://discourse.itk.org/t/itk-5-3-0-5-4rc-build-errors-shared-libs-python-wrappings-itkvtkglue-vs-2022-win11/6327 "2024-01-13T10:35:22Z")

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Hi everyone, unfortunately I cannot build ITK 5.3.0 (after fixing the castxml problem Errors building CastXML and Python wrapping on Windows - #13 by dzenanz) or 5.4rc1 with python wrappings. Problems: ITKOptimizersv…

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## [itk.imread of dicom images with dtype int16](https://discourse.itk.org/t/itk-imread-of-dicom-images-with-dtype-int16/6388)

<div class="topic-metadata">

**Author:** [@alireza\_samadi](https://discourse.itk.org/u/alireza_samadi)\
**Replies:** 6\
**Last updated:** [January 12, 2024, 3:11pm UTC](https://discourse.itk.org/t/itk-imread-of-dicom-images-with-dtype-int16/6388 "2024-01-12T15:11:08Z")

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Hi all In my project I am trying to register two sets of images. When I read my moving image which is a T1 MR Quantitative Map , using DICOM reader \[pydicom.dcmread\] , the image is loaded correctly as below: \[note tha…

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## [ITK Training Course](https://discourse.itk.org/t/itk-training-course/6389)

<div class="topic-metadata">

**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [January 11, 2024, 7:03pm UTC](https://discourse.itk.org/t/itk-training-course/6389 "2024-01-11T19:03:06Z")

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Kitware will host a remote ITK (Advanced) training course from February 12th - 13th 1pm - 5pm EST. Be sure to register for the course using the code ITKADVANCEDTRAINING for a 20% off registration discount! For more i…

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## [Alternatives to TriangleMeshToBinaryImageFilter](https://discourse.itk.org/t/alternatives-to-trianglemeshtobinaryimagefilter/6386)

<div class="topic-metadata">

**Author:** [@CrownMella](https://discourse.itk.org/u/CrownMella)\
**Replies:** 3\
**Last updated:** [January 11, 2024, 5:31pm UTC](https://discourse.itk.org/t/alternatives-to-trianglemeshtobinaryimagefilter/6386 "2024-01-11T17:31:41Z")

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Hi all, As title suggests, are there any other ways to convert a mesh to an image? the current filter causes these barcode artefacts to appear and this ruins the image. I’ve tried using VTK and the barcodes don’t appear…

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## [itkMathematicalMorphologyEnums.h compile error with GCC 13 on Linux](https://discourse.itk.org/t/itkmathematicalmorphologyenums-h-compile-error-with-gcc-13-on-linux/6377)

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**Author:** [@imikejackson](https://discourse.itk.org/u/imikejackson)\
**Replies:** 5\
**Last updated:** [January 9, 2024, 2:25pm UTC](https://discourse.itk.org/t/itkmathematicalmorphologyenums-h-compile-error-with-gcc-13-on-linux/6377 "2024-01-09T14:25:49Z")

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Has anyone else run across this compile error with ITK (5.2.1, 5.3)? In file included from $SRC\_DIR/itk/Modules/Filtering/MathematicalMorphology/src/itkMathematicalMorphologyEnums.cxx:19: $SRC\_DIR/itk/Modules/Filtering…

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## [Orientation did not changed after rotation](https://discourse.itk.org/t/orientation-did-not-changed-after-rotation/6384)

<div class="topic-metadata">

**Author:** [@Jakub\_Mitura](https://discourse.itk.org/u/Jakub_Mitura)\
**Replies:** 5\
**Last updated:** [January 9, 2024, 1:34pm UTC](https://discourse.itk.org/t/orientation-did-not-changed-after-rotation/6384 "2024-01-09T13:34:14Z")

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Hello I adapted method of 3d rotation around center point from \[1\]. It basically constructs rotation matrix and do euler transformation. However when I check direction and origin the do not change, although in principle…

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## [is there have 2d-3d registration example？](https://discourse.itk.org/t/is-there-have-2d-3d-registration-example/6385)

<div class="topic-metadata">

**Author:** [@ma1282029525](https://discourse.itk.org/u/ma1282029525)\
**Replies:** 0\
**Last updated:** [January 8, 2024, 9:10am UTC](https://discourse.itk.org/t/is-there-have-2d-3d-registration-example/6385 "2024-01-08T09:10:16Z")

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is there have 2d-3d registration example？I found an example of registering two 2D images with a 3D image on the forum, but I couldn’t find an example of registering a 2D image with a 3D image.

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## [How to change the values in the sitk.ForwardFFTImageFilter](https://discourse.itk.org/t/how-to-change-the-values-in-the-sitk-forwardfftimagefilter/6379)

<div class="topic-metadata">

**Author:** [@gfunkalea](https://discourse.itk.org/u/gfunkalea)\
**Replies:** 1\
**Last updated:** [January 3, 2024, 2:43pm UTC](https://discourse.itk.org/t/how-to-change-the-values-in-the-sitk-forwardfftimagefilter/6379 "2024-01-03T14:43:30Z")

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I want to take the discreet FFT of an image and then zero out the high spatial frequency values and then use the inverse FFT to see the result. My problem is that I get an error trying to use SetPixel on the Fourier tran…

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## [Is information lost when converting dicom to png 16 bit?](https://discourse.itk.org/t/is-information-lost-when-converting-dicom-to-png-16-bit/6375)

<div class="topic-metadata">

**Author:** [@Wallesss](https://discourse.itk.org/u/Wallesss)\
**Replies:** 5\
**Last updated:** [January 3, 2024, 1:35pm UTC](https://discourse.itk.org/t/is-information-lost-when-converting-dicom-to-png-16-bit/6375 "2024-01-03T13:35:35Z")

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Hello, is there any loss of information when converting a dicom file to a 16 bit png image? We are, of course, not talking about metadata in dicom. My comrade is reluctant to convert dicom files into images, claiming tha…

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## [How to use rtkCudaIterativeFDKConeBeamReconstructionFilter and rtkParkerShortScanImageFilter together](https://discourse.itk.org/t/how-to-use-rtkcudaiterativefdkconebeamreconstructionfilter-and-rtkparkershortscanimagefilter-together/6367)

<div class="topic-metadata">

**Author:** [@ma1282029525](https://discourse.itk.org/u/ma1282029525)\
**Replies:** 6\
**Last updated:** [December 29, 2023, 11:15am UTC](https://discourse.itk.org/t/how-to-use-rtkcudaiterativefdkconebeamreconstructionfilter-and-rtkparkershortscanimagefilter-together/6367 "2023-12-29T11:15:58Z")

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How to use rtkCudaIterativeFDKConeBeamReconstructionFilter and rtkParkerShortScanImageFilter together

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## [Call for shapes](https://discourse.itk.org/t/call-for-shapes/6373)

<div class="topic-metadata">

**Author:** [@dzenanz](https://discourse.itk.org/u/dzenanz)\
**Replies:** 0\
**Last updated:** [December 26, 2023, 1:58pm UTC](https://discourse.itk.org/t/call-for-shapes/6373 "2023-12-26T13:58:59Z")

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If you want to contribute medical shapes, you can do so at MedShapeNet. More info there.

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## [SmoothingRecursiveGaussian vs DiscreteGaussian](https://discourse.itk.org/t/smoothingrecursivegaussian-vs-discretegaussian/6370)

<div class="topic-metadata">

**Author:** [@reox](https://discourse.itk.org/u/reox)\
**Replies:** 4\
**Last updated:** [December 21, 2023, 3:24pm UTC](https://discourse.itk.org/t/smoothingrecursivegaussian-vs-discretegaussian/6370 "2023-12-21T15:24:50Z")

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Here is a small example using both SmoothingRecursiveGaussian and DiscreteGaussian to smooth an image. Both filter should use the same σ of 0.8 - as far as I understood the documentation, the Recursive filter has the sta…

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## [How to get oblique 2d slice from volume (simpleITK)](https://discourse.itk.org/t/how-to-get-oblique-2d-slice-from-volume-simpleitk/6028)

<div class="topic-metadata">

**Author:** [@Salu\_Ramos](https://discourse.itk.org/u/Salu_Ramos)\
**Replies:** 8\
**Last updated:** [December 20, 2023, 8:53pm UTC](https://discourse.itk.org/t/how-to-get-oblique-2d-slice-from-volume-simpleitk/6028 "2023-12-20T20:53:36Z")

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Hello, I’m searching for code example of oblique 2d slice. Asking chatgpt and bard I was able to understand the underlying geometry: plane center point, plane normal vector, rotation matrix, translation matrix. They ev…

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## [Anaconda LibITK 5.3.0 MacOS ARM64 packaging failures](https://discourse.itk.org/t/anaconda-libitk-5-3-0-macos-arm64-packaging-failures/6357)

<div class="topic-metadata">

**Author:** [@imikejackson](https://discourse.itk.org/u/imikejackson)\
**Replies:** 8\
**Last updated:** [December 19, 2023, 5:48pm UTC](https://discourse.itk.org/t/anaconda-libitk-5-3-0-macos-arm64-packaging-failures/6357 "2023-12-19T17:48:47Z")

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We are trying to package our own library (GitHub - BlueQuartzSoftware/complex: The backend algorithms and framework associated with DREAM3DNX, a data analysis program for materials science data analytics) into an anacon…

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## [HTML file with itk and vtk to render meshes](https://discourse.itk.org/t/html-file-with-itk-and-vtk-to-render-meshes/6361)

<div class="topic-metadata">

**Author:** [@Oddone-Scatena](https://discourse.itk.org/u/Oddone-Scatena)\
**Replies:** 1\
**Last updated:** [December 18, 2023, 3:20pm UTC](https://discourse.itk.org/t/html-file-with-itk-and-vtk-to-render-meshes/6361 "2023-12-18T15:20:31Z")

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Hello, I am building an itk vtk web application. I am new to .js. Is there something wrong with my code? Thank you \<!DOCTYPE html\> \<html lang="en"\> \<head\> \<meta charset="UTF-8"\> \<meta http-equiv="X-UA-Compatib…

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## [What are the valid input parameters of the different optimization algorithms available in SimpleITK?](https://discourse.itk.org/t/what-are-the-valid-input-parameters-of-the-different-optimization-algorithms-available-in-simpleitk/6314)

<div class="topic-metadata">

**Author:** [@debapriya](https://discourse.itk.org/u/debapriya)\
**Replies:** 8\
**Last updated:** [December 18, 2023, 1:50pm UTC](https://discourse.itk.org/t/what-are-the-valid-input-parameters-of-the-different-optimization-algorithms-available-in-simpleitk/6314 "2023-12-18T13:50:54Z")

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Hello, I want to compare the performance of different optimization algorithms while registering two images. For this purpose, I want to know what are the valid input parameters (step size, function tolerance, number of …

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## [Does non-rigid registration changes the real Geometry?](https://discourse.itk.org/t/does-non-rigid-registration-changes-the-real-geometry/6359)

<div class="topic-metadata">

**Author:** [@Faramarz-bagherzadeh](https://discourse.itk.org/u/Faramarz-bagherzadeh)\
**Replies:** 2\
**Last updated:** [December 16, 2023, 5:42am UTC](https://discourse.itk.org/t/does-non-rigid-registration-changes-the-real-geometry/6359 "2023-12-16T05:42:25Z")

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Hello all, I have 2 sets of micro CT images (3D): with the 12-micrometer resolution taken in Axial mode with the 120-micrometer resolution taken in Helical mode We can consider the high-res image displays the reality…

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## [Torch import time](https://discourse.itk.org/t/torch-import-time/6354)

<div class="topic-metadata">

**Author:** [@tbaudier](https://discourse.itk.org/u/tbaudier)\
**Replies:** 2\
**Last updated:** [December 14, 2023, 5:07pm UTC](https://discourse.itk.org/t/torch-import-time/6354 "2023-12-14T17:07:24Z")

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Hi, In a new virtual environment, I installed itk with pypi and I tested the import time: ITK is fast to import. But now, I installed torch with pypi: The import time is huge now, due to torch. I do not need tor…

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## [deformable PointSet to PointSet registration with python](https://discourse.itk.org/t/deformable-pointset-to-pointset-registration-with-python/6351)

<div class="topic-metadata">

**Author:** [@HnHd](https://discourse.itk.org/u/HnHd)\
**Replies:** 2\
**Last updated:** [December 11, 2023, 7:38pm UTC](https://discourse.itk.org/t/deformable-pointset-to-pointset-registration-with-python/6351 "2023-12-11T19:38:39Z")

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Hello all, I am trying to implement a deformable registration for two pointsets in python-itk. Being a newbie I started with the itk.PointSetToPointSetRegistrationMethod, but got stuck when trying to set the metric for…

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## [where is the origin of image position?](https://discourse.itk.org/t/where-is-the-origin-of-image-position/6344)

<div class="topic-metadata">

**Author:** [@zhang-qiang-github](https://discourse.itk.org/u/zhang-qiang-github)\
**Replies:** 2\
**Last updated:** [December 11, 2023, 6:11pm UTC](https://discourse.itk.org/t/where-is-the-origin-of-image-position/6344 "2023-12-11T18:11:53Z")

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For tag: 0020|0032 (image position patient), 0020|0037 (image orientation patient), where is the origin point (0, 0, 0). Is it a point of scanner? If one scanner give two dcm data, whether the origion point (0,0,0) are …

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## [Wrong distance map](https://discourse.itk.org/t/wrong-distance-map/6342)

<div class="topic-metadata">

**Author:** [@Sean\_Hatton](https://discourse.itk.org/u/Sean_Hatton)\
**Replies:** 1\
**Last updated:** [December 8, 2023, 8:17pm UTC](https://discourse.itk.org/t/wrong-distance-map/6342 "2023-12-08T20:17:20Z")

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I have a weird problem with distancemaps. I am in a Python 3.7 environment with SITK 2.2 (SITK 2.3 not supported on Python 3.7). I was able to run sitk.SignedMaurerDistanceMap and sitk.SignedDanielssonDistanceMap altern…

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## [RTK reconstruction, using ParkerShortScanImageFilter, but the result is incorrect](https://discourse.itk.org/t/rtk-reconstruction-using-parkershortscanimagefilter-but-the-result-is-incorrect/6325)

<div class="topic-metadata">

**Author:** [@ma1282029525](https://discourse.itk.org/u/ma1282029525)\
**Replies:** 3\
**Last updated:** [December 7, 2023, 9:48am UTC](https://discourse.itk.org/t/rtk-reconstruction-using-parkershortscanimagefilter-but-the-result-is-incorrect/6325 "2023-12-07T09:48:02Z")

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For the correct reconstruction result, there should be a rectangle in the middle, but the RTK reconstruction result looks like it is missing some data, becoming a quadrilateral. Is my projection data 845, covering 0-34…

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## [Multiprocessing LabelMap](https://discourse.itk.org/t/multiprocessing-labelmap/6339)

<div class="topic-metadata">

**Author:** [@chlee](https://discourse.itk.org/u/chlee)\
**Replies:** 1\
**Last updated:** [December 5, 2023, 9:39pm UTC](https://discourse.itk.org/t/multiprocessing-labelmap/6339 "2023-12-05T21:39:20Z")

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Dear ITK community, I am dealing with LabelMap, where for each label (and corresponding main image) I want to do image operations, say otsu-thresholding and subsequent filtering to obtain a blob (in itself a label - the…

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## [VCPKG Support](https://discourse.itk.org/t/vcpkg-support/6334)

<div class="topic-metadata">

**Author:** [@imikejackson](https://discourse.itk.org/u/imikejackson)\
**Replies:** 10\
**Last updated:** [December 5, 2023, 6:34pm UTC](https://discourse.itk.org/t/vcpkg-support/6334 "2023-12-05T18:34:22Z")

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Are there plans to support VCPKG with ITK releases, in that will the ITK developers be submitting PRs to the VCPKG repository to update the ITK that is included in VCPKG? The current version is 5.3.0RC2 along with 5.2.1 …

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## [How to disable GDCM functionality](https://discourse.itk.org/t/how-to-disable-gdcm-functionality/6330)

<div class="topic-metadata">

**Author:** [@imikejackson](https://discourse.itk.org/u/imikejackson)\
**Replies:** 6\
**Last updated:** [December 4, 2023, 6:14pm UTC](https://discourse.itk.org/t/how-to-disable-gdcm-functionality/6330 "2023-12-04T18:14:47Z")

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I am struggling with building ITK 5.3.0 with vcpkg. Is there a way to globally disable the GDCM functionality? Our application does not use it and it is causing issues in the build where GDCM\_CMAKE\_INSTALL\_PREFIX is not …

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