# Engineering

**URL:** https://discourse.itk.org/c/engineering/6.md?page=10

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

**Page:** 11

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## [Rotation Transform Errors](https://discourse.itk.org/t/rotation-transform-errors/3844)

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**Author:** [@machadoL](https://discourse.itk.org/u/machadoL)\
**Replies:** 13\
**Last updated:** [February 11, 2021, 3:25pm UTC](https://discourse.itk.org/t/rotation-transform-errors/3844 "2021-02-11T15:25:01Z")

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Hello, Everyone. I am performing a 3D multistage registration. 1st Stage is a Translation transform initiated with an identity transform. The second stage is a Rotation transform. It is pops up the following errors rig…

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## [How to compile part of ITK integrated into another library?](https://discourse.itk.org/t/how-to-compile-part-of-itk-integrated-into-another-library/3824)

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**Author:** [@al-sabr](https://discourse.itk.org/u/al-sabr)\
**Replies:** 66\
**Last updated:** [February 9, 2021, 10:53pm UTC](https://discourse.itk.org/t/how-to-compile-part-of-itk-integrated-into-another-library/3824 "2021-02-09T22:53:50Z")

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Greetings to all! While trying to compile part of the source code from ITK in my project I am having the following errors: G:\\programming\\cplusplus\\CTK\\Libs\\mbilog\\itkOutputWindow.cxx(83,3): error C3861: 'GetPimplGloba…

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## [Understanding Sort and Orientation via CosineValues](https://discourse.itk.org/t/understanding-sort-and-orientation-via-cosinevalues/3839)

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**Author:** [@Akshay\_Goel](https://discourse.itk.org/u/Akshay_Goel)\
**Replies:** 5\
**Last updated:** [February 5, 2021, 9:31pm UTC](https://discourse.itk.org/t/understanding-sort-and-orientation-via-cosinevalues/3839 "2021-02-05T21:31:38Z")

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Hello all, I am trying to further understand how itk handles sort. It seems like the foundation is calculating a normal vector in: Common/ExtendedGDCMSerieHelper.cxx cosines = ImageHelper::GetDirectionCosinesVa…

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## [Usage of -- ImageSeriesReader\_GetGDCMSeriesFileNames](https://discourse.itk.org/t/usage-of-imageseriesreader-getgdcmseriesfilenames/3806)

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**Author:** [@Akshay\_Goel](https://discourse.itk.org/u/Akshay_Goel)\
**Replies:** 9\
**Last updated:** [February 4, 2021, 9:02pm UTC](https://discourse.itk.org/t/usage-of-imageseriesreader-getgdcmseriesfilenames/3806 "2021-02-04T21:02:35Z")

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Hello, Following up from my github post here. @zivy thanks so much for your helpful responses on the github thread. Pasting that below for reference Always use ImageSeriesReader\_GetGDCMSeriesFileNames as it returns t…

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## [Need to find/replace all #include with new path which doesn’t fit with old path](https://discourse.itk.org/t/need-to-find-replace-all-include-with-new-path-which-doesn-t-fit-with-old-path/3820)

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**Author:** [@al-sabr](https://discourse.itk.org/u/al-sabr)\
**Replies:** 1\
**Last updated:** [February 1, 2021, 6:46pm UTC](https://discourse.itk.org/t/need-to-find-replace-all-include-with-new-path-which-doesn-t-fit-with-old-path/3820 "2021-02-01T18:46:42Z")

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Greetings! I am trying to extract an important part of ITK which is used from MITK and the mbilog module and the Blueberry framework and integrate that part inside of CTK. So up until now I was successful in taking mbi…

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## [itk and gpu computation](https://discourse.itk.org/t/itk-and-gpu-computation/3800)

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**Author:** [@pierrectl](https://discourse.itk.org/u/pierrectl)\
**Replies:** 3\
**Last updated:** [January 29, 2021, 10:38pm UTC](https://discourse.itk.org/t/itk-and-gpu-computation/3800 "2021-01-29T22:38:28Z")

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Hello everybody, I browsed through the forum in order to find if some itk pipelines such as registration processes can be computed by the gpu of my computer. I saw this topic from 2017: https://discourse.itk.org/t/is-it…

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## [\[itk-python\] Wrap ITK MatchCardinalityImageToImageMetric](https://discourse.itk.org/t/itk-python-wrap-itk-matchcardinalityimagetoimagemetric/3208)

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**Author:** [@bdepalle](https://discourse.itk.org/u/bdepalle)\
**Replies:** 7\
**Last updated:** [January 29, 2021, 7:40pm UTC](https://discourse.itk.org/t/itk-python-wrap-itk-matchcardinalityimagetoimagemetric/3208 "2021-01-29T19:40:59Z")

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Hi everyone, I have been using ITK in the past and I recently started a python project. In this project I would like to use the MatchCardinalityImageToImageMetric metric. However, the metric has not been ported yet to p…

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## [Problem compiling project: error ld with -lproxTV](https://discourse.itk.org/t/problem-compiling-project-error-ld-with-lproxtv/3711)

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**Author:** [@fonsocm](https://discourse.itk.org/u/fonsocm)\
**Replies:** 7\
**Last updated:** [January 28, 2021, 10:48pm UTC](https://discourse.itk.org/t/problem-compiling-project-error-ld-with-lproxtv/3711 "2021-01-28T22:48:07Z")

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Hi. I am compiling a project with ITK 5.1.2 over KDE Neon (based on Ubuntu 20.04 LTS) and I obtain the error: /usr/bin/ld: cannot find -lproxTV. However, if I go to ./itk/lib there is libitkproxTV-5.1.a. And ITK compile…

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## [Why does my worker memory limit not increase?](https://discourse.itk.org/t/why-does-my-worker-memory-limit-not-increase/3804)

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**Author:** [@joeykleingers](https://discourse.itk.org/u/joeykleingers)\
**Replies:** 2\
**Last updated:** [January 28, 2021, 2:55pm UTC](https://discourse.itk.org/t/why-does-my-worker-memory-limit-not-increase/3804 "2021-01-28T14:55:36Z")

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I am a Dask newbie trying out the Dask.distributed library, and I would like to create a Client with the worker memory limit set to 4 GB. After some Googling around, I wrote the following code in a Jupyter notebook: fr…

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## [Update remote module in ITK](https://discourse.itk.org/t/update-remote-module-in-itk/2615)

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**Author:** [@Gordian](https://discourse.itk.org/u/Gordian)\
**Replies:** 6\
**Last updated:** [January 28, 2021, 1:05am UTC](https://discourse.itk.org/t/update-remote-module-in-itk/2615 "2021-01-28T01:05:40Z")

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Hello, just a question regarding the updates of remote modules in ITK. I have a remote module in ITK. The \*.remote.cmake points to the \* github repo. Initially ITK load the files from the remote repo and build the remo…

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## ["Requested region is (at least partially) outside the largest possible region. Aborted (core dumped)" when calling Update/UpdateLargestPossibleRegion](https://discourse.itk.org/t/requested-region-is-at-least-partially-outside-the-largest-possible-region-aborted-core-dumped-when-calling-update-updatelargestpossibleregion/3732)

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**Author:** [@Stefan\_Radonjic](https://discourse.itk.org/u/Stefan_Radonjic)\
**Replies:** 6\
**Last updated:** [January 21, 2021, 9:42am UTC](https://discourse.itk.org/t/requested-region-is-at-least-partially-outside-the-largest-possible-region-aborted-core-dumped-when-calling-update-updatelargestpossibleregion/3732 "2021-01-21T09:42:45Z")

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Hello everyone! I am new to ITK and I am trying to create a custom registration filter, but I keep running into following error message: what(): /home/stefan/itk/Modules/Core/Common/src/itkDataObject.cxx:393: Requested…

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## [Reading/Writing Images to/from Memory (Rather than Files)](https://discourse.itk.org/t/reading-writing-images-to-from-memory-rather-than-files/3763)

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**Author:** [@harold.absalom](https://discourse.itk.org/u/harold.absalom)\
**Replies:** 2\
**Last updated:** [January 17, 2021, 4:48am UTC](https://discourse.itk.org/t/reading-writing-images-to-from-memory-rather-than-files/3763 "2021-01-17T04:48:27Z")

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I’m trying to construct an itk::Image from an in-memory buffer, rather than from a file on disk. The image data itself is formatted as an NRRD. The buffer has been filled by an external program, and at some point I would…

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## [Keep an eye on zlib-ng](https://discourse.itk.org/t/keep-an-eye-on-zlib-ng/1199)

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**Author:** [@gdevenyi](https://discourse.itk.org/u/gdevenyi)\
**Replies:** 3\
**Last updated:** [January 12, 2021, 6:20pm UTC](https://discourse.itk.org/t/keep-an-eye-on-zlib-ng/1199 "2021-01-12T18:20:43Z")

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A group of folks are trying to drag zlib into the 21st century, keep an eye on it here:

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## [composite transform convertion problem](https://discourse.itk.org/t/composite-transform-convertion-problem/3749)

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**Author:** [@pierrectl](https://discourse.itk.org/u/pierrectl)\
**Replies:** 7\
**Last updated:** [January 11, 2021, 3:24pm UTC](https://discourse.itk.org/t/composite-transform-convertion-problem/3749 "2021-01-11T15:24:26Z")

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Hello all, I was wondering if we can convert a CompositeTransformType to a TransformType? Here is my sample of code: using TransformType = itk::Euler3DTransform\< double \>; TransformType::Pointer first\_transformation =…

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## [AttributeError: module 'SimpleITK' has no attribute 'sitkNearestNeighbour'](https://discourse.itk.org/t/attributeerror-module-simpleitk-has-no-attribute-sitknearestneighbour/3729)

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**Author:** [@Eddardaa\_ben\_loussai](https://discourse.itk.org/u/Eddardaa_ben_loussai)\
**Replies:** 1\
**Last updated:** [December 22, 2020, 1:56pm UTC](https://discourse.itk.org/t/attributeerror-module-simpleitk-has-no-attribute-sitknearestneighbour/3729 "2020-12-22T13:56:50Z")

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Hi everyone, I trying to resize my medical dataset (format .mhd), however i had this error: AttributeError: module ‘SimpleITK’ has no attribute ‘sitkNearestNeighbour’ anyone have idea, please let me know. thank you i…

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## [Unsupported compiler error when linking with Intel compiler](https://discourse.itk.org/t/unsupported-compiler-error-when-linking-with-intel-compiler/3709)

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**Author:** [@Fijoy\_Vadakkumpadan](https://discourse.itk.org/u/Fijoy_Vadakkumpadan)\
**Replies:** 3\
**Last updated:** [December 17, 2020, 9:24pm UTC](https://discourse.itk.org/t/unsupported-compiler-error-when-linking-with-intel-compiler/3709 "2020-12-17T21:24:39Z")

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Hello, I successfully built ITK 5.1.1 static libraries with gcc 7.4, but having an issue linking them to my application, which uses an Intel compiler. I’m getting an “Unsupported compiler” error thrown by the generated…

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## [Universal Windows Platform](https://discourse.itk.org/t/universal-windows-platform/3713)

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**Author:** [@skn123](https://discourse.itk.org/u/skn123)\
**Replies:** 1\
**Last updated:** [December 17, 2020, 8:59pm UTC](https://discourse.itk.org/t/universal-windows-platform/3713 "2020-12-17T20:59:23Z")

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Is there any mechanism to build ITK with UWP rather than a pure Win32 build? I tried force-fitting it with specific tags and various files failed to compile.

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## [How can i read a dicom file in “float pixel format”, using "itkConnectedThresholdImageFilter" and write it to dicom file again?](https://discourse.itk.org/t/how-can-i-read-a-dicom-file-in-float-pixel-format-using-itkconnectedthresholdimagefilter-and-write-it-to-dicom-file-again/2971)

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**Author:** [@wulicheng](https://discourse.itk.org/u/wulicheng)\
**Replies:** 0\
**Last updated:** [April 19, 2020, 4:01am UTC](https://discourse.itk.org/t/how-can-i-read-a-dicom-file-in-float-pixel-format-using-itkconnectedthresholdimagefilter-and-write-it-to-dicom-file-again/2971 "2020-04-19T04:01:25Z")

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I test as next, but failed: typedef float InternalOneFilePixelType; const unsigned int DimensionOneFile = 2; typedef itk::Image\< InternalOneFilePixelType, DimensionOneFile \> InternalOneFileImageTy…

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## [Troble loading and reading LinearTransform.h5](https://discourse.itk.org/t/troble-loading-and-reading-lineartransform-h5/3008)

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**Author:** [@machadoL](https://discourse.itk.org/u/machadoL)\
**Replies:** 9\
**Last updated:** [November 28, 2020, 1:45am UTC](https://discourse.itk.org/t/troble-loading-and-reading-lineartransform-h5/3008 "2020-11-28T01:45:55Z")

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Hello, everyone. I am implementing a pipeline to load a LinearTransform.h5 and convert that into a displacement field. However, I am having a problem loading the transform into a real transform object-pointer to proceed…

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## [linker error while invoking "make" command in my ITK's build directory](https://discourse.itk.org/t/linker-error-while-invoking-make-command-in-my-itks-build-directory/3652)

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**Author:** [@Nayra\_Ahmed](https://discourse.itk.org/u/Nayra_Ahmed)\
**Replies:** 3\
**Last updated:** [November 27, 2020, 3:52pm UTC](https://discourse.itk.org/t/linker-error-while-invoking-make-command-in-my-itks-build-directory/3652 "2020-11-27T15:52:25Z")

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Hi all, I got the below error when I invoke the make command in ITK’s build directory. clang: \*\*error:\*\* linker command failed with exit code 1 (use -v to see invocation) make\[2\]: \*\*\* \[bin/libitktiff.3.20.1.dylib\] Erro…

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## [Fixed Mask Not Working as Expected](https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238)

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**Author:** [@zivy](https://discourse.itk.org/u/zivy)\
**Replies:** 15\
**Last updated:** [November 19, 2020, 8:58pm UTC](https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238 "2020-11-19T20:58:46Z")

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Hi all, Is the following a “bug” which should be addressed or a “feature” which should be circumvented: When using the fixed image mask as part of registration I expect that only points that are inside the mask will be…

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## [The usage of ITK patented code](https://discourse.itk.org/t/the-usage-of-itk-patented-code/3628)

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**Author:** [@Nayra\_Ahmed](https://discourse.itk.org/u/Nayra_Ahmed)\
**Replies:** 1\
**Last updated:** [November 17, 2020, 2:15pm UTC](https://discourse.itk.org/t/the-usage-of-itk-patented-code/3628 "2020-11-17T14:15:40Z")

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I am trying to build an old version of ITK to use the patented code in it. I am building ITK-3.20 and I enabled the generation of the patented code but I still cannot use it. So I have two questions here: First: Any a…

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## [Problems with running HelloWorld project from documentation](https://discourse.itk.org/t/problems-with-running-helloworld-project-from-documentation/3627)

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**Author:** [@Stefan\_Radonjic](https://discourse.itk.org/u/Stefan_Radonjic)\
**Replies:** 1\
**Last updated:** [November 16, 2020, 1:58pm UTC](https://discourse.itk.org/t/problems-with-running-helloworld-project-from-documentation/3627 "2020-11-16T13:58:52Z")

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Hi there! I am just starting to learn about ITK so I’ve decided to start scanning documentation and learn as much as possible. While following instructions specified in section 2.5.1. I ran into following error: stefan…

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## [Image with LAB colorspace](https://discourse.itk.org/t/image-with-lab-colorspace/3593)

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**Author:** [@nm97](https://discourse.itk.org/u/nm97)\
**Replies:** 1\
**Last updated:** [November 3, 2020, 4:02pm UTC](https://discourse.itk.org/t/image-with-lab-colorspace/3593 "2020-11-03T16:02:12Z")

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Hi everyone, Just wanted to know how can I have an image with LAB colorspace as it is done for example RGB. itk::Image\<itk::RGBPixel\<InputDataType\>, Diemnsions\> Thank you. Regards, Hrach

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## [reading segmentation file from Slicer (NRRD) with multiple segments with SimpleITK shows Exception](https://discourse.itk.org/t/reading-segmentation-file-from-slicer-nrrd-with-multiple-segments-with-simpleitk-shows-exception/808)

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**Author:** [@Diego\_C](https://discourse.itk.org/u/Diego_C)\
**Replies:** 31\
**Last updated:** [November 3, 2020, 1:29am UTC](https://discourse.itk.org/t/reading-segmentation-file-from-slicer-nrrd-with-multiple-segments-with-simpleitk-shows-exception/808 "2020-11-03T01:29:03Z")

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Hello! I segmented two prostate lesions in Slicer and saved the segmentation as NRRD. \[image\] I am trying to read this file using SimpleITK but I am getting the following error message: File "/Users/odin/anaconda/lib…

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## [Using ITK Modules with itk.js](https://discourse.itk.org/t/using-itk-modules-with-itk-js/3587)

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**Author:** [@Besler](https://discourse.itk.org/u/Besler)\
**Replies:** 0\
**Last updated:** [November 2, 2020, 4:53am UTC](https://discourse.itk.org/t/using-itk-modules-with-itk-js/3587 "2020-11-02T04:53:55Z")

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I am interested in using itk.js with the ITKIOScanco module. Can anyone point me in the right direction for enabling modules in itk.js? Alternatively, I can copy the source into my itk-js build (I think). Also, absolute…

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## [A tool for Fuzzy connectedness Algorithm tool](https://discourse.itk.org/t/a-tool-for-fuzzy-connectedness-algorithm-tool/3577)

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**Author:** [@Nayra\_Ahmed](https://discourse.itk.org/u/Nayra_Ahmed)\
**Replies:** 0\
**Last updated:** [October 28, 2020, 4:30pm UTC](https://discourse.itk.org/t/a-tool-for-fuzzy-connectedness-algorithm-tool/3577 "2020-10-28T16:30:18Z")

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I want to use fuzzy connectedness algorithm in my project, but I knew that it is patented code now , and has been removed from ITK about 10 years ago. So is there any tool that I can buy to use this algorithm through ?

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## [C++20 Comparison Operators](https://discourse.itk.org/t/c-20-comparison-operators/3506)

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**Author:** [@spinicist](https://discourse.itk.org/u/spinicist)\
**Replies:** 5\
**Last updated:** [October 22, 2020, 6:37pm UTC](https://discourse.itk.org/t/c-20-comparison-operators/3506 "2020-10-22T18:37:36Z")

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Hello, Recently Apple updated their Clang, which now supports more of the C++20 standard. Due to the changes in how the comparison operator work in C++20 (to support the spaceship operator as I understand it), I am now …

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## [Set Minimum Python Version to 3.6](https://discourse.itk.org/t/set-minimum-python-version-to-3-6/3528)

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**Author:** [@hjmjohnson](https://discourse.itk.org/u/hjmjohnson)\
**Replies:** 1\
**Last updated:** [October 14, 2020, 1:39pm UTC](https://discourse.itk.org/t/set-minimum-python-version-to-3-6/3528 "2020-10-14T13:39:35Z")

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ITK Community, There is a need to define the minimum python version that is currently supported for building and deploying ITK. Python 3.5 will reach its " end of life " at the end of September 2020. If there are no…

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## [stream writing in coronal orientation](https://discourse.itk.org/t/stream-writing-in-coronal-orientation/3514)

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**Author:** [@nikolay929](https://discourse.itk.org/u/nikolay929)\
**Replies:** 2\
**Last updated:** [October 7, 2020, 9:33am UTC](https://discourse.itk.org/t/stream-writing-in-coronal-orientation/3514 "2020-10-07T09:33:58Z")

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Hi. I’ve got several mha files, each is the subvolume of the big 3d volume. These subvolumes go in coronal direction. So, I need to combine them into one big file, but I don’t have enough memory to create whole image to…

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