# Latest

**URL:** https://discourse.itk.org/latest.md?page=65

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

**Page:** 66

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## [SimpleITK examples of registration whose transform with Shift, Rotation and Scale for 3D](https://discourse.itk.org/t/simpleitk-examples-of-registration-whose-transform-with-shift-rotation-and-scale-for-3d/3196)

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**Author:** [@Luis\_Carlos\_Carneiro](https://discourse.itk.org/u/Luis_Carlos_Carneiro)\
**Replies:** 1\
**Last updated:** [June 17, 2020, 12:42pm UTC](https://discourse.itk.org/t/simpleitk-examples-of-registration-whose-transform-with-shift-rotation-and-scale-for-3d/3196 "2020-06-17T12:42:32Z")

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Dear All, Can you please suggest SimpleITK examples for 3D (.mhd images) for registration whose transform supports Shift, Rotation and Scaling? I am using the example below which supports Shift and Rotation. Thanks, …

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## [Problem in getting displacement field](https://discourse.itk.org/t/problem-in-getting-displacement-field/3127)

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**Author:** [@basal](https://discourse.itk.org/u/basal)\
**Replies:** 1\
**Last updated:** [June 17, 2020, 10:14am UTC](https://discourse.itk.org/t/problem-in-getting-displacement-field/3127 "2020-06-17T10:14:49Z")

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Hi, I used landmark warping code for deforming two sets of landmarks. The output is desirable and I wanted to get displacement field from the code. So I added the following part to the code but the displacement field is …

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## [Build pip wheel from existing source tree with ITKPythonPackage](https://discourse.itk.org/t/build-pip-wheel-from-existing-source-tree-with-itkpythonpackage/3187)

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**Author:** [@darrent1974](https://discourse.itk.org/u/darrent1974)\
**Replies:** 5\
**Last updated:** [June 17, 2020, 1:30am UTC](https://discourse.itk.org/t/build-pip-wheel-from-existing-source-tree-with-itkpythonpackage/3187 "2020-06-17T01:30:30Z")

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Hi, I’ve searched but couldn’t find any answer matching what I’m after. I’ve created a suite of docker containers, dash web apps, back-end processing services, clara framework workflows, jupyterlab servers which all us…

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## [How to use Image filter on series images](https://discourse.itk.org/t/how-to-use-image-filter-on-series-images/3184)

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**Author:** [@Amnesie](https://discourse.itk.org/u/Amnesie)\
**Replies:** 2\
**Last updated:** [June 16, 2020, 1:16pm UTC](https://discourse.itk.org/t/how-to-use-image-filter-on-series-images/3184 "2020-06-16T13:16:31Z")

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Hallo everyone All example i can found about Morphological Image filter are base on single image. I tried some of them it can work on single image of my dataset. But, Now i import a dicom series and i want to do the sa…

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## [error "Deprecated. Use equivalent C++11 header instead. see: vxl/scripts/UseStandardHeaders.py"](https://discourse.itk.org/t/error-deprecated-use-equivalent-c-11-header-instead-see-vxl-scripts-usestandardheaders-py/3167)

<div class="topic-metadata">

**Author:** [@zhaowg](https://discourse.itk.org/u/zhaowg)\
**Replies:** 4\
**Last updated:** [June 16, 2020, 2:41am UTC](https://discourse.itk.org/t/error-deprecated-use-equivalent-c-11-header-instead-see-vxl-scripts-usestandardheaders-py/3167 "2020-06-16T02:41:28Z")

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Hi, Error info: fatal error C1189: #error: “Deprecated. Use equivalent C++11 header instead. see: vxl/scripts/UseStandardHeaders.py” ITK Version: 5.0.1 CMake Version： 3.17 My visual studio project was upgraded fro…

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## [weird compile errors when setting -DCMAKE\_CXX\_STANDARD=17](https://discourse.itk.org/t/weird-compile-errors-when-setting-dcmake-cxx-standard-17/3094)

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**Author:** [@kayarre](https://discourse.itk.org/u/kayarre)\
**Replies:** 6\
**Last updated:** [June 16, 2020, 2:32am UTC](https://discourse.itk.org/t/weird-compile-errors-when-setting-dcmake-cxx-standard-17/3094 "2020-06-16T02:32:07Z")

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gcc-10 on ubuntu 18.04 When the python wrappers are selected be built and CMAKE\_CXX\_STANDARD=17 I get weird error about type\_traits way down low in the c++ standard library. I think it has to do with the python binding…

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## [Padding without extending image size to increase the field of view](https://discourse.itk.org/t/padding-without-extending-image-size-to-increase-the-field-of-view/3163)

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**Author:** [@isuruwi](https://discourse.itk.org/u/isuruwi)\
**Replies:** 4\
**Last updated:** [June 15, 2020, 4:25pm UTC](https://discourse.itk.org/t/padding-without-extending-image-size-to-increase-the-field-of-view/3163 "2020-06-15T16:25:13Z")

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I’m trying to add an uniform margin to a 3D CT volume using itk::ConstantPadImageFilter and then resize into original image size. My ultimate goal is ,for example, to transform the bottom image to the image at the top t…

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## [Is it possible to use GPU for image resample?](https://discourse.itk.org/t/is-it-possible-to-use-gpu-for-image-resample/2775)

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**Author:** [@qiang-zhang-neu](https://discourse.itk.org/u/qiang-zhang-neu)\
**Replies:** 13\
**Last updated:** [June 15, 2020, 2:37pm UTC](https://discourse.itk.org/t/is-it-possible-to-use-gpu-for-image-resample/2775 "2020-06-15T14:37:15Z")

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The image resample filter in ITK is slow, can we use GPU to accelerate it?

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## [Multi stage composite transform](https://discourse.itk.org/t/multi-stage-composite-transform/3181)

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**Author:** [@lucilla7](https://discourse.itk.org/u/lucilla7)\
**Replies:** 6\
**Last updated:** [June 14, 2020, 10:08pm UTC](https://discourse.itk.org/t/multi-stage-composite-transform/3181 "2020-06-14T22:08:48Z")

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Hello to all, I am trying to write a very simple gui that allows to choose to cancatenate different types of trasforms (rigid, affine and elastic) with different parameters/metrics/optimizers and save the tfm file. I tr…

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## [The information regarding txt file in paraview](https://discourse.itk.org/t/the-information-regarding-txt-file-in-paraview/3153)

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**Author:** [@basal](https://discourse.itk.org/u/basal)\
**Replies:** 5\
**Last updated:** [June 14, 2020, 7:38pm UTC](https://discourse.itk.org/t/the-information-regarding-txt-file-in-paraview/3153 "2020-06-14T19:38:32Z")

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Hi, I opened VTK file from registration in paraview and created a glyph and export the txt file which was for deformation field. Does anyone know that the last three columns show the deformed points or I have to apply f…

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## [How to use Image Iterators in right way](https://discourse.itk.org/t/how-to-use-image-iterators-in-right-way/3171)

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**Author:** [@Amnesie](https://discourse.itk.org/u/Amnesie)\
**Replies:** 7\
**Last updated:** [June 13, 2020, 2:06pm UTC](https://discourse.itk.org/t/how-to-use-image-iterators-in-right-way/3171 "2020-06-13T14:06:48Z")

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Hello everyone, i have noticed if i use for-loop across the image to get the every pixel value is time-consuming and inefficient,and that is also be mentioned in the user guide. I read this page https://itk.org/Doxygen…

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## [what is denoted by sitk.GetDirection()](https://discourse.itk.org/t/what-is-denoted-by-sitk-getdirection/3162)

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**Author:** [@prms](https://discourse.itk.org/u/prms)\
**Replies:** 2\
**Last updated:** [June 13, 2020, 11:44am UTC](https://discourse.itk.org/t/what-is-denoted-by-sitk-getdirection/3162 "2020-06-13T11:44:06Z")

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I want to understand the interpretation of the array returned by GetDirection in case of MRI image. (-0.9998157207129488, 0.019196994953562158, 0.0, -0.019196994953562158, -0.9998157207129488, 0.0, 0.0, 0.0, 1.0…

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## [DICOM Print SCU and DICOM Print SCP](https://discourse.itk.org/t/dicom-print-scu-and-dicom-print-scp/3176)

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**Author:** [@gunaitk](https://discourse.itk.org/u/gunaitk)\
**Replies:** 3\
**Last updated:** [June 12, 2020, 2:15pm UTC](https://discourse.itk.org/t/dicom-print-scu-and-dicom-print-scp/3176 "2020-06-12T14:15:59Z")

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Hi Does DICOM print scp available in ITK or VTK ? Looking forward it. Thanks

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## [Derivation of mutual information in EMMA algorithm for image alignment](https://discourse.itk.org/t/derivation-of-mutual-information-in-emma-algorithm-for-image-alignment/3180)

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**Author:** [@Amey\_Joshi](https://discourse.itk.org/u/Amey_Joshi)\
**Replies:** 1\
**Last updated:** [June 12, 2020, 1:56pm UTC](https://discourse.itk.org/t/derivation-of-mutual-information-in-emma-algorithm-for-image-alignment/3180 "2020-06-12T13:56:55Z")

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This is a question about the derivative of the mutual information between two images with respect to a transformation between them. It appears in one of Paul Viola’s papers that introduced this concept for the first time…

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## [SimpleITK Bspline image representation](https://discourse.itk.org/t/simpleitk-bspline-image-representation/3170)

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**Author:** [@ibr](https://discourse.itk.org/u/ibr)\
**Replies:** 3\
**Last updated:** [June 11, 2020, 11:08pm UTC](https://discourse.itk.org/t/simpleitk-bspline-image-representation/3170 "2020-06-11T23:08:55Z")

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Dear all, I am trying to understand this paper \[1\] about B-spline. Is there a SimpleITK example to get a B-Spline representation of an image? Thanks in advance! \[1\] Splines - A perfect fit for signal and image process…

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## [AttributeError: module 'itk.ITKClassifiersPython' has no attribute 'swig'](https://discourse.itk.org/t/attributeerror-module-itk-itkclassifierspython-has-no-attribute-swig/3168)

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**Author:** [@juccapirama](https://discourse.itk.org/u/juccapirama)\
**Replies:** 2\
**Last updated:** [June 11, 2020, 1:56pm UTC](https://discourse.itk.org/t/attributeerror-module-itk-itkclassifierspython-has-no-attribute-swig/3168 "2020-06-11T13:56:14Z")

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Hello, I recently updated my ITK to ITK 5.1.0 release with Anaconda and i wanted to do some tests with codes that i’ve already had and were working. The code i’m using is basically doing a segmentation with different f…

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## [Align image along hippocampus axis](https://discourse.itk.org/t/align-image-along-hippocampus-axis/3125)

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**Author:** [@Pierrick](https://discourse.itk.org/u/Pierrick)\
**Replies:** 1\
**Last updated:** [June 10, 2020, 6:18pm UTC](https://discourse.itk.org/t/align-image-along-hippocampus-axis/3125 "2020-06-10T18:18:13Z")

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Hi all, I am trying to reorient images along the hippocampus main axis. I can replicate the results of 06\_segmentation\_and\_shape\_analysis.html, but since it centers the image on the corner of the bounding box, it is les…

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## [itkGPUDemonsRegistrationFilterTest fails](https://discourse.itk.org/t/itkgpudemonsregistrationfiltertest-fails/3160)

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**Author:** [@ktsumura](https://discourse.itk.org/u/ktsumura)\
**Replies:** 3\
**Last updated:** [June 10, 2020, 5:43pm UTC](https://discourse.itk.org/t/itkgpudemonsregistrationfiltertest-fails/3160 "2020-06-10T17:43:33Z")

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Hi, I run itkGPUDemonsRegistrationFilterTest via ITKGPUPDEDeformableRegistrationTestDriver, and the GPU registration seemed not working. The result of GPU is almost the same as the moving image, even though the result o…

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## [pyramidal image format for volumes](https://discourse.itk.org/t/pyramidal-image-format-for-volumes/3146)

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**Author:** [@kayarre](https://discourse.itk.org/u/kayarre)\
**Replies:** 4\
**Last updated:** [June 10, 2020, 2:54pm UTC](https://discourse.itk.org/t/pyramidal-image-format-for-volumes/3146 "2020-06-10T14:54:35Z")

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I have used the tiff format for looking at pyramidal (tiled) 2-D images that help deal with the not being able to hold all of the data in memory at the same time, is there an equivalent or similar way to deal with really…

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## [KeyError: 'hessian\_recursive\_gaussian\_image\_filter'](https://discourse.itk.org/t/keyerror-hessian-recursive-gaussian-image-filter/3077)

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**Author:** [@Kashyap](https://discourse.itk.org/u/Kashyap)\
**Replies:** 3\
**Last updated:** [June 10, 2020, 2:40pm UTC](https://discourse.itk.org/t/keyerror-hessian-recursive-gaussian-image-filter/3077 "2020-06-10T14:40:43Z")

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I am following along the Segment Blood Vessels tutorial in Python. I installed itk itk-5.1.0 in an anconda enviornment. When running the tutorial I get the following error: ---------------------------------------------…

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## [Problem with Building ITK with Module\_ItkVtkGlue = ON](https://discourse.itk.org/t/problem-with-building-itk-with-module-itkvtkglue-on/2315)

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**Author:** [@Phong\_Tran](https://discourse.itk.org/u/Phong_Tran)\
**Replies:** 8\
**Last updated:** [June 10, 2020, 2:38pm UTC](https://discourse.itk.org/t/problem-with-building-itk-with-module-itkvtkglue-on/2315 "2020-06-10T14:38:49Z")

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Hi All, I got a problem when building ITK in release (version 5.10 in github: https://github.com/InsightSoftwareConsortium/ITK) with setting Module\_ItkVtkGlue = ON. Actually I set VTK\_DIR points to the my latest install…

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## [\[itk-python\] BlockMatchingImageFilter usage problem](https://discourse.itk.org/t/itk-python-blockmatchingimagefilter-usage-problem/3122)

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**Author:** [@totoro3y](https://discourse.itk.org/u/totoro3y)\
**Replies:** 6\
**Last updated:** [June 10, 2020, 2:32pm UTC](https://discourse.itk.org/t/itk-python-blockmatchingimagefilter-usage-problem/3122 "2020-06-10T14:32:23Z")

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Hello everyone, I am trying to use BlockMatchingImageFilter to do block matching. I refered to the c++ example match feature points (https://itk.org/Doxygen/html/SphinxExamples\_2src\_2Registration\_2Common\_2MatchFeaturePo…

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## [SimpleITK image interpolation, PhysicalPointSource example](https://discourse.itk.org/t/simpleitk-image-interpolation-physicalpointsource-example/3158)

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**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 1\
**Last updated:** [June 9, 2020, 7:36pm UTC](https://discourse.itk.org/t/simpleitk-image-interpolation-physicalpointsource-example/3158 "2020-06-09T19:36:35Z")

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Hi all, sorry for a such a primitive question! and I hope I am in the right forum! I am trying to follow the python program for image interpolation, I have created PhysicalPointSource pattern and could show the image u…

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## [Slicer 4.10.2 missing editor module ?!](https://discourse.itk.org/t/slicer-4-10-2-missing-editor-module/3152)

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**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 3\
**Last updated:** [June 9, 2020, 6:36pm UTC](https://discourse.itk.org/t/slicer-4-10-2-missing-editor-module/3152 "2020-06-09T18:36:53Z")

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hi all, I am pretty new to slicer and this is my first time to use it. I could not find editor in modules pull down list, there is one module Called segmentation editor but that is different than Editor, I tried to inst…

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## [Error using ITK::ImageFileWriter in QtApplication in Ubuntu](https://discourse.itk.org/t/error-using-itk-imagefilewriter-in-qtapplication-in-ubuntu/3157)

<div class="topic-metadata">

**Author:** [@FabianHeu](https://discourse.itk.org/u/FabianHeu)\
**Replies:** 1\
**Last updated:** [June 9, 2020, 4:02pm UTC](https://discourse.itk.org/t/error-using-itk-imagefilewriter-in-qtapplication-in-ubuntu/3157 "2020-06-09T16:02:37Z")

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we are using C++, Ubuntu 18.04, GCC I got a weird error using the ITK::ImageFileWriter. We are creating an nrrd file like in the example on https://itk.org/ITKExamples/src/IO/GDCM/ReadDICOMSeriesAndWrite3DImage/Document…

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## [MetaImage: ITK does not consider ElementToIntensityFunctionSlope/Offset](https://discourse.itk.org/t/metaimage-itk-does-not-consider-elementtointensityfunctionslope-offset/3148)

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**Author:** [@Sophonet](https://discourse.itk.org/u/Sophonet)\
**Replies:** 7\
**Last updated:** [June 9, 2020, 6:04am UTC](https://discourse.itk.org/t/metaimage-itk-does-not-consider-elementtointensityfunctionslope-offset/3148 "2020-06-09T06:04:12Z")

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Hi list, when reading DICOM images with ITK, rescaleIntercept / Slope is forcefully applied. MetaImage provides similar tags (ElementToIntensityFunctionSlope/Offset), but currently, they are ignored and they don’t even …

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## [N4BiasFieldCorrection issues when re-run (applied through SliceBySlice filter)](https://discourse.itk.org/t/n4biasfieldcorrection-issues-when-re-run-applied-through-slicebyslice-filter/2897)

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**Author:** [@grothausmann.roman](https://discourse.itk.org/u/grothausmann.roman)\
**Replies:** 19\
**Last updated:** [June 8, 2020, 9:35am UTC](https://discourse.itk.org/t/n4biasfieldcorrection-issues-when-re-run-applied-through-slicebyslice-filter/2897 "2020-06-08T09:35:00Z")

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Hello! I am wondering what is the current status of streaming when using the SliceBySlice filter to apply another filter slice-wise. I found this communication but it is quite old and have trouble to get my implementati…

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## [How to do Ascent with RegularStepGradientDescentOptimizerv4](https://discourse.itk.org/t/how-to-do-ascent-with-regularstepgradientdescentoptimizerv4/3150)

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**Author:** [@vnpavanelli](https://discourse.itk.org/u/vnpavanelli)\
**Replies:** 2\
**Last updated:** [June 5, 2020, 7:35pm UTC](https://discourse.itk.org/t/how-to-do-ascent-with-regularstepgradientdescentoptimizerv4/3150 "2020-06-05T19:35:13Z")

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The RegularStepGradientDescentOptimizer had member functions to set Maximize or Minimize mode, how this can be made with RegularStepGradientDescentOptimizerv4? I’m thinking about changing my metric function in the Updat…

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## [Set sitk::Image pixels](https://discourse.itk.org/t/set-sitk-image-pixels/3145)

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**Author:** [@flaviu2](https://discourse.itk.org/u/flaviu2)\
**Replies:** 3\
**Last updated:** [June 5, 2020, 1:28pm UTC](https://discourse.itk.org/t/set-sitk-image-pixels/3145 "2020-06-05T13:28:38Z")

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I have a VTK volume (CBCT), and I converted into sitk::Image. Ok, Now, I want to melt down some pixels there, I mean to setup some pixels as air. For that I have wrote (pseudocode): sitk::Image img = FromVTKVolume(); wh…

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## [3D MRI IMAGE REGISTRATION](https://discourse.itk.org/t/3d-mri-image-registration/3144)

<div class="topic-metadata">

**Author:** [@Dodox](https://discourse.itk.org/u/Dodox)\
**Replies:** 5\
**Last updated:** [June 5, 2020, 1:10pm UTC](https://discourse.itk.org/t/3d-mri-image-registration/3144 "2020-06-05T13:10:40Z")

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Hello dear community , i need your help !!! I applied this registration code on 3D MRI images, but as you can see in the photo, the images are not perfectly aligned. any solutions ? here is the code fixed\_image\_nam…

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