# Latest

**URL:** https://discourse.itk.org/latest.md?page=42

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

**Page:** 43

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## [SimpleITK 2.2 Release Candidate 1](https://discourse.itk.org/t/simpleitk-2-2-release-candidate-1/4727)

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**Author:** [@blowekamp](https://discourse.itk.org/u/blowekamp)\
**Replies:** 0\
**Last updated:** [January 12, 2022, 3:00pm UTC](https://discourse.itk.org/t/simpleitk-2-2-release-candidate-1/4727 "2022-01-12T15:00:55Z")

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Announcement Announcing the SimpleITK 2.2 Release Candidate 1! Users and developers are encouraged to test the RC before the final release and report issues, bugs, and any compatibility problems. Installing SimpleITK C…

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## [Difference between imposed motion (SimpleITK) and registration output (ITK, ITK-Snap)](https://discourse.itk.org/t/difference-between-imposed-motion-simpleitk-and-registration-output-itk-itk-snap/4714)

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**Author:** [@Keyn34](https://discourse.itk.org/u/Keyn34)\
**Replies:** 10\
**Last updated:** [January 12, 2022, 9:57am UTC](https://discourse.itk.org/t/difference-between-imposed-motion-simpleitk-and-registration-output-itk-itk-snap/4714 "2022-01-12T09:57:46Z")

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Hello once again everyone, A quick question concerning applying translation and rotation to volumes and then registering them to compare the results to the imposed motion: I have a python script that uses SimpleITK to …

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## [ERROR: Pixel type: vector of 8-bit signed integer is not supported](https://discourse.itk.org/t/error-pixel-type-vector-of-8-bit-signed-integer-is-not-supported/4716)

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**Author:** [@zandarina](https://discourse.itk.org/u/zandarina)\
**Replies:** 1\
**Last updated:** [January 11, 2022, 11:04am UTC](https://discourse.itk.org/t/error-pixel-type-vector-of-8-bit-signed-integer-is-not-supported/4716 "2022-01-11T11:04:08Z")

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Dear all, I write because I got this error and i have tried all types but it returns an error with whatever casting I do in the image. Exception thrown in SimpleITK LabelStatisticsImageFilter\_Execute: d:\\a\\1\\sitk\\code\\…

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## [Regarding C++11 noexcept](https://discourse.itk.org/t/regarding-c-11-noexcept/1517)

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**Author:** [@Niels\_Dekker](https://discourse.itk.org/u/Niels_Dekker)\
**Replies:** 23\
**Last updated:** [January 7, 2022, 6:34pm UTC](https://discourse.itk.org/t/regarding-c-11-noexcept/1517 "2022-01-07T18:34:41Z")

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It was an unpleasant surprise to me, to read here at the forum (December 2017) that noexcept might sometimes harm the performance. As noted by @matt.mccormick at warning: dynamic exception specifications are deprecated i…

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## [ResampleImage for 4D data](https://discourse.itk.org/t/resampleimage-for-4d-data/4710)

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**Author:** [@Prathamesh\_Chopade](https://discourse.itk.org/u/Prathamesh_Chopade)\
**Replies:** 3\
**Last updated:** [January 6, 2022, 2:19pm UTC](https://discourse.itk.org/t/resampleimage-for-4d-data/4710 "2022-01-06T14:19:08Z")

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My goal is to upsample datasets (both 3D and 4D). ResampleImage was able to upsample 3D data, but gave an error when i tried upsampling 4D data. \*\*Are there any solutions or alternatives for this?? \*\* The command i use…

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## [Read a JPEG series](https://discourse.itk.org/t/read-a-jpeg-series/4704)

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**Author:** [@gopinath\_balaji](https://discourse.itk.org/u/gopinath_balaji)\
**Replies:** 1\
**Last updated:** [January 4, 2022, 8:35pm UTC](https://discourse.itk.org/t/read-a-jpeg-series/4704 "2022-01-04T20:35:02Z")

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Hey, I am working on Bias correction for MRI .jpg images, but I am having trouble loading in the data. I read that stik.ReadImage() accepts a string location as input but that isn’t working. Passing the image as a vari…

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## [Create image after numpy transpose](https://discourse.itk.org/t/create-image-after-numpy-transpose/3241)

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**Author:** [@emilljungberg](https://discourse.itk.org/u/emilljungberg)\
**Replies:** 2\
**Last updated:** [December 30, 2021, 7:11am UTC](https://discourse.itk.org/t/create-image-after-numpy-transpose/3241 "2021-12-30T07:11:22Z")

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Hi! I’m building an image registration framework for MRI data that requires combination of numpy and ITK. I recently realised that the indexing in ITK arrays and numpy arrays are swapped from \[x,y,z\] to \[z,y,x\] (from th…

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## [How to tune registration](https://discourse.itk.org/t/how-to-tune-registration/4707)

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**Author:** [@wangjun456](https://discourse.itk.org/u/wangjun456)\
**Replies:** 3\
**Last updated:** [December 30, 2021, 6:14am UTC](https://discourse.itk.org/t/how-to-tune-registration/4707 "2021-12-30T06:14:56Z")

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a The result seems very unsatisfactory，and my weight adjustment has no effect on the result

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## [Google Test Issues](https://discourse.itk.org/t/google-test-issues/4706)

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**Author:** [@melrobin](https://discourse.itk.org/u/melrobin)\
**Replies:** 12\
**Last updated:** [December 30, 2021, 2:12am UTC](https://discourse.itk.org/t/google-test-issues/4706 "2021-12-30T02:12:11Z")

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I am having a good deal of trouble building ITK from development sources on Fedora 34. The problem occurs during Google Test detection. Here are the beginning of the errors: CMake Error at CMake/ITKModuleTest.cmake:25…

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## [Cannot find \`itkImageToVTKImageFilter.h\` header via vcpkg-built itk](https://discourse.itk.org/t/cannot-find-itkimagetovtkimagefilter-h-header-via-vcpkg-built-itk/4702)

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**Author:** [@LesleyLai](https://discourse.itk.org/u/LesleyLai)\
**Replies:** 1\
**Last updated:** [December 28, 2021, 4:26am UTC](https://discourse.itk.org/t/cannot-find-itkimagetovtkimagefilter-h-header-via-vcpkg-built-itk/4702 "2021-12-28T04:26:03Z")

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Hi, I am trying to introduce ITK to my project via vcpkg, and I met the following error when I try to replicate this example fatal error: itkImageToVTKImageFilter.h: No such file or directory I don’t seem to have probl…

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## [N4 Bias Field Correction](https://discourse.itk.org/t/n4-bias-field-correction/3972)

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**Author:** [@banikr](https://discourse.itk.org/u/banikr)\
**Replies:** 3\
**Last updated:** [March 24, 2021, 7:17pm UTC](https://discourse.itk.org/t/n4-bias-field-correction/3972 "2021-03-24T19:17:09Z")

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Hello All, I want to apply bias field correction in 3D T1w MR volumes(including non-brain sections too). Images are in NIfTI format. Though it is recommended to use masks, I don’t have masks or atlas for the data. I sa…

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## [Registering a Projective Transformed Image](https://discourse.itk.org/t/registering-a-projective-transformed-image/4695)

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**Author:** [@WhaSukGo](https://discourse.itk.org/u/WhaSukGo)\
**Replies:** 1\
**Last updated:** [December 23, 2021, 2:08pm UTC](https://discourse.itk.org/t/registering-a-projective-transformed-image/4695 "2021-12-23T14:08:25Z")

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I’m trying to register a frame from camera to a template. The most naive approach would be a feature based approach, finding a homography. Unfortunately, for my case, images don’t have adequate features to use as featu…

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## [How to create SimpleITK Image from a dicom dataset](https://discourse.itk.org/t/how-to-create-simpleitk-image-from-a-dicom-dataset/4692)

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**Author:** [@Ervis](https://discourse.itk.org/u/Ervis)\
**Replies:** 4\
**Last updated:** [December 21, 2021, 5:06pm UTC](https://discourse.itk.org/t/how-to-create-simpleitk-image-from-a-dicom-dataset/4692 "2021-12-21T17:06:54Z")

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Hi Is there a way to create/form/load a SimpleITK image / volume from a dicom dataset ? Essentially I need to load the dicom data received from a dicom node post QueryRetrieve. But instead of storing the data on disk o…

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## [Built ITK 5.2.1 with Module SkullStrip - Multiple defined symbols error](https://discourse.itk.org/t/built-itk-5-2-1-with-module-skullstrip-multiple-defined-symbols-error/4690)

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**Author:** [@Tom89](https://discourse.itk.org/u/Tom89)\
**Replies:** 1\
**Last updated:** [December 20, 2021, 3:16pm UTC](https://discourse.itk.org/t/built-itk-5-2-1-with-module-skullstrip-multiple-defined-symbols-error/4690 "2021-12-20T15:16:23Z")

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Hi, I built ITK 5.2.1 with the SkullStrip module enabled. When I try to use the itkStripTsImageFilter class, I get an “one or more multiply defined symbols found” error. |Error|LNK1169|one or more multiply defined symb…

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## [While building the code I'm getting this error undefined reference to \`vtable for itk::ImageFileReaderException'](https://discourse.itk.org/t/while-building-the-code-im-getting-this-error-undefined-reference-to-vtable-for-itk-imagefilereaderexception/4679)

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**Author:** [@priyanka](https://discourse.itk.org/u/priyanka)\
**Replies:** 4\
**Last updated:** [December 20, 2021, 1:45pm UTC](https://discourse.itk.org/t/while-building-the-code-im-getting-this-error-undefined-reference-to-vtable-for-itk-imagefilereaderexception/4679 "2021-12-20T13:45:19Z")

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‘’’ libexample-postgresql-lib.a(UserService.cpp.o): In function itk::ImageFileReaderException::ImageFileReaderException(char const\*, unsigned int, char const\*, char const\*)': UserService.cpp:(.text.\_ZN3itk24ImageFileRea…

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## [Compilation issue including ITK with brew on MacOS](https://discourse.itk.org/t/compilation-issue-including-itk-with-brew-on-macos/4681)

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**Author:** [@Ber](https://discourse.itk.org/u/Ber)\
**Replies:** 4\
**Last updated:** [December 18, 2021, 12:21pm UTC](https://discourse.itk.org/t/compilation-issue-including-itk-with-brew-on-macos/4681 "2021-12-18T12:21:37Z")

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Hi ITK teams, We get an issue once using ITK (5.2.1) through brew and macOs and obtain this type of error related to cmath use: Applications/Xcode\_13.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/M…

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## [Bspline FFD registration](https://discourse.itk.org/t/bspline-ffd-registration/4682)

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**Author:** [@VeerBal](https://discourse.itk.org/u/VeerBal)\
**Replies:** 0\
**Last updated:** [December 17, 2021, 5:29pm UTC](https://discourse.itk.org/t/bspline-ffd-registration/4682 "2021-12-17T17:29:38Z")

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Hi there So I’m registering 2 lung CT images of same subject at different time points using the Bspline FFD approach . These lung images are in .mha format and I’m using the same approach as done in the POPI model. So …

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## [Error while configuring itk example with vcpkg](https://discourse.itk.org/t/error-while-configuring-itk-example-with-vcpkg/4672)

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**Author:** [@priyanka](https://discourse.itk.org/u/priyanka)\
**Replies:** 5\
**Last updated:** [December 17, 2021, 6:54am UTC](https://discourse.itk.org/t/error-while-configuring-itk-example-with-vcpkg/4672 "2021-12-17T06:54:32Z")

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Please see the image below for the error I’m facing.

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## [create coronal images for different slice thickness of axial image](https://discourse.itk.org/t/create-coronal-images-for-different-slice-thickness-of-axial-image/4658)

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**Author:** [@gayathri](https://discourse.itk.org/u/gayathri)\
**Replies:** 8\
**Last updated:** [December 16, 2021, 2:20pm UTC](https://discourse.itk.org/t/create-coronal-images-for-different-slice-thickness-of-axial-image/4658 "2021-12-16T14:20:52Z")

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How to create coronal and sagittal images for different slice thickness

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## [Contouring with having initial curve using filters in Simple ITK module?](https://discourse.itk.org/t/contouring-with-having-initial-curve-using-filters-in-simple-itk-module/4620)

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**Author:** [@shahrokh\_nasseri](https://discourse.itk.org/u/shahrokh_nasseri)\
**Replies:** 18\
**Last updated:** [December 15, 2021, 4:16pm UTC](https://discourse.itk.org/t/contouring-with-having-initial-curve-using-filters-in-simple-itk-module/4620 "2021-12-15T16:16:55Z")

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Hello Dear Developers and Users Consider the following figure. This screenshot contains a 2D image of EPID, named EPID. Consider the following figure. This screenshot contains the contour of the pelvic bone extracte…

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## [Linux 32-bit build fails with "inlining failed" error](https://discourse.itk.org/t/linux-32-bit-build-fails-with-inlining-failed-error/4666)

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**Author:** [@SteveRobbins](https://discourse.itk.org/u/SteveRobbins)\
**Replies:** 5\
**Last updated:** [December 14, 2021, 4:48am UTC](https://discourse.itk.org/t/linux-32-bit-build-fails-with-inlining-failed-error/4666 "2021-12-14T04:48:39Z")

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I’m building v5.2.1 (but same failure occurs in 5.3rc02) on an up-to-date Debian Linux machine. GCC is version 11.2, CMake is 3.22.1 My machine is actually an AMD64. I can build the 64-bit version without trouble. Bu…

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## [Linux 32-bit tests failing](https://discourse.itk.org/t/linux-32-bit-tests-failing/4668)

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**Author:** [@SteveRobbins](https://discourse.itk.org/u/SteveRobbins)\
**Replies:** 4\
**Last updated:** [December 14, 2021, 3:24am UTC](https://discourse.itk.org/t/linux-32-bit-tests-failing/4668 "2021-12-14T03:24:27Z")

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Hi, I have built ITK 5.2.1 on linux 64-bits and all tests pass. Same build on 32-bits, have many failures. Wondering if it is my set-up. Has anyone sucessfully run the test suite on 32-bits linux? The following test…

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## [Interpolate between VersorRigid3DTransforms (with different centers of rotation)](https://discourse.itk.org/t/interpolate-between-versorrigid3dtransforms-with-different-centers-of-rotation/4655)

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**Author:** [@dperl](https://discourse.itk.org/u/dperl)\
**Replies:** 7\
**Last updated:** [December 13, 2021, 7:26pm UTC](https://discourse.itk.org/t/interpolate-between-versorrigid3dtransforms-with-different-centers-of-rotation/4655 "2021-12-13T19:26:02Z")

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I want to rigidly register two very large microCT volumes (~1000x1000x1000 voxels) of a material sample taken at different times. The sample has small features (eg. roughly 10x10x10 voids), homogeneously distributed acro…

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## [python hints/autocompletion in IDE](https://discourse.itk.org/t/python-hints-autocompletion-in-ide/4670)

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**Author:** [@Gabriele\_Belotti](https://discourse.itk.org/u/Gabriele_Belotti)\
**Replies:** 4\
**Last updated:** [December 13, 2021, 4:19pm UTC](https://discourse.itk.org/t/python-hints-autocompletion-in-ide/4670 "2021-12-13T16:19:59Z")

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Hi everyone, i managed to build itk with python wrappers on a win10 machine using visual studio 2017. However I am not getting the full hints after importing itk in a visual studio code IDE. I built master at ENH: Gener…

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## [use of SimpleFilter in 3dslicer](https://discourse.itk.org/t/use-of-simplefilter-in-3dslicer/4664)

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**Author:** [@mahi](https://discourse.itk.org/u/mahi)\
**Replies:** 1\
**Last updated:** [December 10, 2021, 9:35pm UTC](https://discourse.itk.org/t/use-of-simplefilter-in-3dslicer/4664 "2021-12-10T21:35:02Z")

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heloo. i want to use from SimpleFilter module in 3dslicer but it doesnt have any documentation . can any one help me?

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## [How to convert multi region Segmentation.seg.nrrd into a set of binary label images?](https://discourse.itk.org/t/how-to-convert-multi-region-segmentation-seg-nrrd-into-a-set-of-binary-label-images/4391)

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**Author:** [@machadoL](https://discourse.itk.org/u/machadoL)\
**Replies:** 12\
**Last updated:** [December 10, 2021, 9:29am UTC](https://discourse.itk.org/t/how-to-convert-multi-region-segmentation-seg-nrrd-into-a-set-of-binary-label-images/4391 "2021-12-10T09:29:50Z")

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Hello, friends. I would like to ask your help for converting a 2D segmentation.seg.nrrd into a collection of 2D binary label images (one image per segmentation region). I need to perform that by command line in python …

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## [Eigen Values extraction in Python](https://discourse.itk.org/t/eigen-values-extraction-in-python/3035)

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**Author:** [@juccapirama](https://discourse.itk.org/u/juccapirama)\
**Replies:** 7\
**Last updated:** [December 9, 2021, 8:21pm UTC](https://discourse.itk.org/t/eigen-values-extraction-in-python/3035 "2021-12-09T20:21:47Z")

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Hey, I’m trying to extract the eigen values of a Hessian Image using itk.SymmetricEigenAnalysisImageFilter to further implement different vesselness filters. But the problem is that i couldn’t manipulate the result from…

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## [Image Registration Trapped in Local Minimum - Workarounds?](https://discourse.itk.org/t/image-registration-trapped-in-local-minimum-workarounds/4646)

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**Author:** [@sr1](https://discourse.itk.org/u/sr1)\
**Replies:** 4\
**Last updated:** [December 9, 2021, 7:28am UTC](https://discourse.itk.org/t/image-registration-trapped-in-local-minimum-workarounds/4646 "2021-12-09T07:28:25Z")

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Hi, I do image registration using GradientDescentLineSearch, MultiScale and MattesMutualInformation. The algorithm converges and gives “okayish” results. However, if I hand-tune the resulting transformation, I get even…

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## [Problem by registration of an MRI Head image and an CT Head Image](https://discourse.itk.org/t/problem-by-registration-of-an-mri-head-image-and-an-ct-head-image/4641)

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**Author:** [@sunshine123](https://discourse.itk.org/u/sunshine123)\
**Replies:** 8\
**Last updated:** [December 8, 2021, 8:19pm UTC](https://discourse.itk.org/t/problem-by-registration-of-an-mri-head-image-and-an-ct-head-image/4641 "2021-12-08T20:19:37Z")

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Hello, I am new to image registration and I want to register an MRI Head Image with a CT image. I began with the example from this Topic to understand how image registration is working in SITK: But when I applied the…

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## [Images with bad starting conditions](https://discourse.itk.org/t/images-with-bad-starting-conditions/4642)

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**Author:** [@avispi](https://discourse.itk.org/u/avispi)\
**Replies:** 6\
**Last updated:** [December 8, 2021, 4:35pm UTC](https://discourse.itk.org/t/images-with-bad-starting-conditions/4642 "2021-12-08T16:35:04Z")

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Hi. I’m new to ITK. I have a set of template + image pairs. The pairs are of a thermal template and visual photo image. There is a significant translation between the images. I need to solve other transformation par…

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