# .dcm to .obj conversion

**URL:** <https://discourse.slicer.org/t/dcm-to-obj-conversion/4260>\
**Category:** Support\
**Created:** [October 2, 2018, 3:34pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260 "2018-10-02T15:34:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![kinda.h](https://avatars.discourse-cdn.com/v4/letter/k/ac91a4/32.png) [@kinda.h](https://discourse.slicer.org/u/kinda.h)\
**Post date:** [October 2, 2018, 3:34pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260/1 "2018-10-02T15:34:25Z")

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How can i convert .dcm to .obj (both 3d colored) in slicer

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 2, 2018, 6:08pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260/2 "2018-10-02T18:08:06Z")

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You need to segment structures that you are interested in. See tutorials about how to do that using Slicer here: [https://www.slicer.org/wiki/Documentation/Nightly/Training#Slicer4\_Image\_Segmentation](https://www.slicer.org/wiki/Documentation/Nightly/Training#Slicer4_Image_Segmentation)

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<div class="post-metadata">

**Author:** ![kinda.h](https://avatars.discourse-cdn.com/v4/letter/k/ac91a4/32.png) [@kinda.h](https://discourse.slicer.org/u/kinda.h)\
**Post date:** [October 2, 2018, 7:32pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260/3 "2018-10-02T19:32:38Z")

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Thank you for your reply. But it seems I cant import my .dcm 3D model into slicer by dragging and dropping.

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<div class="post-metadata">

**Author:** ![kinda.h](https://avatars.discourse-cdn.com/v4/letter/k/ac91a4/32.png) [@kinda.h](https://discourse.slicer.org/u/kinda.h)\
**Post date:** [October 2, 2018, 7:56pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260/4 "2018-10-02T19:56:00Z")

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Can you please check the file i need to import and help put [https://we.tl/t-emV0N6Qq2h](https://we.tl/t-emV0N6Qq2h)

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 2, 2018, 8:49pm UTC](https://discourse.slicer.org/t/dcm-to-obj-conversion/4260/5 "2018-10-02T20:49:40Z")

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This file is not in DICOM format at all. It looks like an XML-based file that contains a textured surface scan.

> **File content summary**
>
> ```
> <HPS version="1.1">
> <Packed_geometry>
> <Schema>CE</Schema>
> <Binary_data>
> <CE version="1.0">
> <Facets facet_count="210785" base64_encoded_bytes="230074" color="8421504">…</Facets>
> <Vertices vertex_count="106388" base64_encoded_bytes="1276656" check_value="1503019551">...</Vertices>
> </CE>
> </Binary_data>
> </Packed_geometry>
> <SignatureHash>468746363166DB9BC44B79AB1E07BCE00BDD09CF</SignatureHash>
> <TextureData2>
> <TextureSetIDs IndexCount="1" Base64EncodedBytes="4">AAAAAA==</TextureSetIDs>
> <PerVertexTextureCoord Base64EncodedBytes="531980" Key="1">...</PerVertexTextureCoord>
> <TextureImages>
> <TextureImage Width="2048" Height="2048" TextureName="Texture" TextureCoordSet="0" BytesPerPixel="3" Base64EncodedBytes="294270">...</TextureImage>
> </TextureImages>
> </TextureData2>
> <FacetMarks>
> </FacetMarks>
> <Annotations>
> <Annotation type="CoordinateTransform">
> <String name="TransformID" value="Focus2FinalTrans" />
> <Matrix4x4 name="TransformMatrix" m00="0.113340572" m01="-0.979611039" m02="0.165879682" m03="27.2143612" m10="-0.981021166" m11="-0.08390312" m12="0.174807817" m13="-6.56699562" m20="-0.157325849" m21="-0.1825443" m22="-0.9705288" m23="-19.03727" m30="0" m31="0" m32="0" m33="1" />
> <Property name="Misc" value="0" />
> </Annotation>
> </Annotations>
> <Objects />
> <Splines />
> <Properties>
> <Property name="TranscodeProperties" value="EKID;SiteDongle" />
> <Property name="SiteDongle" value="1596591929" />
> <Property name="EKID" value="1" />
> <Property name="Application" value="TRIOS 1.3.3.1" />
> <Property name="AVNRTime" value="15" />
> <Property name="ChrominanceVariance" value="113" />
> <Property name="ColorCalibrationKitVersion" value="1" />
> <Property name="ComputerName" value="BECKTOR" />
> <Property name="DaysSinceCalibration" value="0" />
> <Property name="DistributorID" value="11" />
> <Property name="DongleNumber" value="1463509418" />
> <Property name="Transcode_EKID" value="1" />
> <Property name="FusedDiff" value="-1" />
> <Property name="HighResSubscanCount" value="0" />
> <Property name="NormContrast" value="-1" />
> <Property name="ParamContrast" value="8.75259675950082716" />
> <Property name="PostProcessTime" value="190.306s" />
> <Property name="ScannerDisplayName" value="Color-P13 Shade" />
> <Property name="ScannerFirmware" value="1.3.2" />
> <Property name="ScannerRGBCalibrationAge" value="12.8305745717589" />
> <Property name="ScannerSerialNumber" value="t1503c13013b" />
> <Property name="ScanSource" value="TRIOS" />
> <Property name="ScanTime" value="00:04:17.2219900" />
> <Property name="SiteID" value="73906" />
> <Property name="SubscanCount" value="680" />
> <Property name="SupportsShadeMeasurement2" value="True" />
> <Property name="SurfaceArea" value="3389" />
> <Property name="TimeStampUTC" value="2015-03-31 07:27:58" />
> <Property name="SourceApp" value="TRIOS.exe#206342 - 2014-12-02 15:04:08 (build 1.3.3.1)#2014-12-02 14.05[NS]+OrthoAnalyzer.exe#Orthodontics 2013-1 (build 1.5.1.3)#2014-10-29 01.14" />
> </Properties>
> </HPS>
> 
> ```

Try to save this data set in .obj or .ply format directly from your scanning software.

The file format is quite easy to decode, so implementing a reader for it would take probably only a couple of days.