# \#itk-wasm

**URL:** https://discourse.itk.org/tag/itk-wasm/216.md

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

---

## [Unable to Read MHD Files with metaReadImage](https://discourse.itk.org/t/unable-to-read-mhd-files-with-metareadimage/7447)

<div class="topic-metadata">

**Author:** [@GMrrc](https://discourse.itk.org/u/GMrrc)\
**Replies:** 2\
**Last updated:** [February 28, 2025, 9:34pm UTC](https://discourse.itk.org/t/unable-to-read-mhd-files-with-metareadimage/7447 "2025-02-28T21:34:14Z")

</div>

Hello I’m encountering issues when trying to read MHD files using the metaReadImage method from ITK-Wasm. I’ve tried multiple approaches, but I cannot successfully load an MHD/ZRAW file. Additionally, the official onlin…

---

## [Running Pipeline Inputs/Outputs Tutorial in Browser](https://discourse.itk.org/t/running-pipeline-inputs-outputs-tutorial-in-browser/7282)

<div class="topic-metadata">

**Author:** [@kgoettler](https://discourse.itk.org/u/kgoettler)\
**Replies:** 4\
**Last updated:** [October 29, 2024, 2:54pm UTC](https://discourse.itk.org/t/running-pipeline-inputs-outputs-tutorial-in-browser/7282 "2024-10-29T14:54:57Z")

</div>

Hi all, I’ve been following the ITK-Wasm tutorials and would like to start using ITK-Wasm in some browser-based applications I’m building. As a first step, I’m attempting to compile and run the median filtering code fro…

---

## [Example of loading images using itk-wasm?](https://discourse.itk.org/t/example-of-loading-images-using-itk-wasm/7275)

<div class="topic-metadata">

**Author:** [@dstansby](https://discourse.itk.org/u/dstansby)\
**Replies:** 4\
**Last updated:** [October 22, 2024, 6:05pm UTC](https://discourse.itk.org/t/example-of-loading-images-using-itk-wasm/7275 "2024-10-22T18:05:42Z")

</div>

I’m looking to render a 3D TIFF file using vtk.js, and I understand I can handle the reading of the images using itk-wasm, and then convert it to a VTK object. I’m struggling to understand from the itk-wasm API docs how …

---

## [Read different series of dicom](https://discourse.itk.org/t/read-different-series-of-dicom/6251)

<div class="topic-metadata">

**Author:** [@Xoz](https://discourse.itk.org/u/Xoz)\
**Replies:** 8\
**Last updated:** [May 20, 2024, 4:13am UTC](https://discourse.itk.org/t/read-different-series-of-dicom/6251 "2024-05-20T04:13:43Z")

</div>

Hi everyone, I’ve got an issue when loading some dicom files using itk-wasm, in the past I load the uploaded files through readImageDICOMFileSeries, it worked fine when there is just a single serie. But some of the dic…

---

## [where itk-wasm tutorial, itk-wasm labeling, registration, etc are moved?](https://discourse.itk.org/t/where-itk-wasm-tutorial-itk-wasm-labeling-registration-etc-are-moved/6246)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 2\
**Last updated:** [October 13, 2023, 1:12pm UTC](https://discourse.itk.org/t/where-itk-wasm-tutorial-itk-wasm-labeling-registration-etc-are-moved/6246 "2023-10-13T13:12:48Z")

</div>

@matt.mccormick hi, i have been out in webassembly world for couple of months and now i am back and all my links to itk-wasm , tutorial and etc. are gone and removed, could you please tell me where are they moved? BR …

---

## [run wasm module in web browser google chrom (Applying Debugging to RGBImage.cxx)](https://discourse.itk.org/t/run-wasm-module-in-web-browser-google-chrom-applying-debugging-to-rgbimage-cxx/5930)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 1\
**Last updated:** [July 27, 2023, 10:55pm UTC](https://discourse.itk.org/t/run-wasm-module-in-web-browser-google-chrom-applying-debugging-to-rgbimage-cxx/5930 "2023-07-27T22:55:19Z")

</div>

@matt.mccormick Hi, I am trying to finalize all knowledge i have collecting in last couple months about webassembly c++ and build wasm modules to run on webassembly platform. wasi/node/web browser/debugging. the proje…

---

## [itk-wasm toolchain c++ debug symbols](https://discourse.itk.org/t/itk-wasm-toolchain-c-debug-symbols/5945)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 1\
**Last updated:** [July 27, 2023, 9:19pm UTC](https://discourse.itk.org/t/itk-wasm-toolchain-c-debug-symbols/5945 "2023-07-27T21:19:17Z")

</div>

Hi everyone I have a simple question about itk-wasm. Have anybody managed to build debug version of itk example into c++ using itk-wasm toolchain for both wasi/emscripten/browser? My ecosystem is as follows: Node.js …

---

## [watershed segmentation wasi](https://discourse.itk.org/t/watershed-segmentation-wasi/5329)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 3\
**Last updated:** [July 27, 2023, 9:07pm UTC](https://discourse.itk.org/t/watershed-segmentation-wasi/5329 "2023-07-27T21:07:28Z")

</div>

@matt.mccormick Hi mat, I fixed it. I know now why you did the following: npx itk-wasm -b wasi-build run morphological.wasi.wasm -- -- VisibleWomanEyeSlice.png WatershedSegmentation1Output1.png we dont need any optio…

---

## [wasi-build-debug debugging InputsOutputs.wasi.wasm using lldb14](https://discourse.itk.org/t/wasi-build-debug-debugging-inputsoutputs-wasi-wasm-using-lldb14/5897)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 3\
**Last updated:** [May 9, 2023, 9:43am UTC](https://discourse.itk.org/t/wasi-build-debug-debugging-inputsoutputs-wasi-wasm-using-lldb14/5897 "2023-05-09T09:43:07Z")

</div>

@matt.mccormick Hi, I am having a lot of problems with watershed Segmentation even now with wasi build. I will explain this in my next message, I did try to debug a wasi-build-debug of InputsOutputs.wasi.wasm module a…

---

## [Node Emscripten for watershed segmentation, unexpected pixel type](https://discourse.itk.org/t/node-emscripten-for-watershed-segmentation-unexpected-pixel-type/5915)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 1\
**Last updated:** [May 1, 2023, 9:17pm UTC](https://discourse.itk.org/t/node-emscripten-for-watershed-segmentation-unexpected-pixel-type/5915 "2023-05-01T21:17:55Z")

</div>

@matt.mccormick Hi, I have following cxx code which does watershed segmentation, wasi is working now, but the node, inspect debugging, etc. not working, I have build node-emscripten debug, and node-inspect, node-emscri…

---

## [itk-wasm debugging example problem](https://discourse.itk.org/t/itk-wasm-debugging-example-problem/5870)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 7\
**Last updated:** [April 24, 2023, 8:25pm UTC](https://discourse.itk.org/t/itk-wasm-debugging-example-problem/5870 "2023-04-24T20:25:59Z")

</div>

@matt.mccormick , Hi matt, I have been reading about the WebAssembly and emscripten to understand how ITK-WASM works for last two months. two months ago I got stuck in build watershed segmentation 2d for node.js, it si…

---

## [How to build ImageRegistration8 example with ITK-WASM?](https://discourse.itk.org/t/how-to-build-imageregistration8-example-with-itk-wasm/5800)

<div class="topic-metadata">

**Author:** [@David\_SAMSONOFF](https://discourse.itk.org/u/David_SAMSONOFF)\
**Replies:** 33\
**Last updated:** [April 13, 2023, 7:14pm UTC](https://discourse.itk.org/t/how-to-build-imageregistration8-example-with-itk-wasm/5800 "2023-04-13T19:14:28Z")

</div>

Hello, I’m trying to compile the example ImageRegistration8.cxx for WebAssembly without success. I have followed the tutorial in https://wasm.itk.org/tutorial/inputs\_outputs and it works correctly. However, when I follo…

---

## [Hello Wasm World!](https://discourse.itk.org/t/hello-wasm-world/5617)

<div class="topic-metadata">

**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [January 9, 2023, 4:19am UTC](https://discourse.itk.org/t/hello-wasm-world/5617 "2023-01-09T04:19:12Z")

</div>

In modern computing, the Web Platform has transformed web browsers into a powerful and accessible application interface. Applications built on open web standards work, with no installation, across operating system and ha…

---

## [Create Elegant C++ Spatial Processing Pipelines in WebAssembly](https://discourse.itk.org/t/create-elegant-c-spatial-processing-pipelines-in-webassembly/5692)

<div class="topic-metadata">

**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [February 10, 2023, 9:08pm UTC](https://discourse.itk.org/t/create-elegant-c-spatial-processing-pipelines-in-webassembly/5692 "2023-02-10T21:08:17Z")

</div>

By: Matt McCormick , Mary Elise Dedicke , Henry Schreiner , WebAssembly’s origins date back to Alon Zakai’s incredible effort to build C++ to JavaScript. In 2015, we demonstrated the power of this technology to make sci…

---

## [Need help in resolving the error in "readImageDICOMFileSeries"](https://discourse.itk.org/t/need-help-in-resolving-the-error-in-readimagedicomfileseries/5561)

<div class="topic-metadata">

**Author:** [@shantanudeo](https://discourse.itk.org/u/shantanudeo)\
**Replies:** 0\
**Last updated:** [December 9, 2022, 11:05am UTC](https://discourse.itk.org/t/need-help-in-resolving-the-error-in-readimagedicomfileseries/5561 "2022-12-09T11:05:34Z")

</div>

Firstly, I am new to ITK-wasm and even JS. I am trying out an example to read DICOM image using ITK.js. I have followed “itk-read-dicom” on Glitch (https://glitch.com/edit/#!/itk-read-dicom?path=src%2Findex.js%3A27%3A3…

---

## [runPipelineNode](https://discourse.itk.org/t/runpipelinenode/5271)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 3\
**Last updated:** [October 26, 2022, 6:34am UTC](https://discourse.itk.org/t/runpipelinenode/5271 "2022-10-26T06:34:19Z")

</div>

Hi everyone, I have hard time to extend ITK-WASM HelloWasm example to MedianFilterTest.cxx example. I managed to build it using itk-wasm build command in node.js terminal command line in VSCODE. MedianFilterTest.js/umd/…

---

## [insighttoolkit/brigejavascript instruction manual](https://discourse.itk.org/t/insighttoolkit-brigejavascript-instruction-manual/5328)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 7\
**Last updated:** [September 20, 2022, 10:52am UTC](https://discourse.itk.org/t/insighttoolkit-brigejavascript-instruction-manual/5328 "2022-09-20T10:52:09Z")

</div>

@matt.mccormick , Hi mat, I am trying to build and run WatershedSegmentation1.cxx using ITK-WASM/WASI. the code is below. I have just tried to parse input command line with pipeline as in example InputsOutputs example…

---

## [itk::JSONImageIO](https://discourse.itk.org/t/itk-jsonimageio/5276)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 2\
**Last updated:** [August 18, 2022, 5:09pm UTC](https://discourse.itk.org/t/itk-jsonimageio/5276 "2022-08-18T17:09:20Z")

</div>

Hi @dzenanz , I have problem finding class itk::JSONImageIO, i wanna convert png images to png.json files. I know we can use itk::JSONImageIO class. thank you @sag

---

## [MedianFilterTest, ITK-WASM, ITK-JS, ITK-JS-VTK, crashed when running npx node index.mjs ./cthead.png ./cthead1.out.png 4](https://discourse.itk.org/t/medianfiltertest-itk-wasm-itk-js-itk-js-vtk-crashed-when-running-npx-node-index-mjs-cthead-png-cthead1-out-png-4/5223)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 2\
**Last updated:** [July 28, 2022, 12:29pm UTC](https://discourse.itk.org/t/medianfiltertest-itk-wasm-itk-js-itk-js-vtk-crashed-when-running-npx-node-index-mjs-cthead-png-cthead1-out-png-4/5223 "2022-07-28T12:29:30Z")

</div>

Hi @dzenanz, I am stuck in ITK-JS, ITK-WASM. Environment: VSCODE: latest version Node version: node.js 16.15.1 npm version: 8.11.0 EDI: Visual studio code/WSL2(widows linux subsystem) works fine. docker desktop: i…

---

## [itk-wasm, hellow world , nodejs, not working](https://discourse.itk.org/t/itk-wasm-hellow-world-nodejs-not-working/5115)

<div class="topic-metadata">

**Author:** [@sag](https://discourse.itk.org/u/sag)\
**Replies:** 9\
**Last updated:** [June 26, 2022, 7:45pm UTC](https://discourse.itk.org/t/itk-wasm-hellow-world-nodejs-not-working/5115 "2022-06-26T19:45:54Z")

</div>

@lassoan Dear Anders, I have a beginner question. I spent almost two weeks to put together my development environment in windows, wsl+ubuntu2004, macos. I use virtual wsl2 subsystem in windows as linux backend. my fro…