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Export Models to OBJ

An OBJ file is a surface model file format.

Single Segmentation Node

For this example, we will use the segmentations that we generated for the CTACardio segmentation exercise.

  1. Load you CTACardio project
  2. Switch to the Segmentations module
  3. Set the Active segmentation to the Segmentation node.
  4. Under the Representations tab, update the Closed surface and ensure the decimation settings are set to 0.5

    img-name

  5. Under the Export to files, enter the following settings:

img-name - Create a new folder on your desktop called "MyModels" - Set the File format to OBJ - Be sure to Check on Merge into single file

Multiple Segmentation Nodes

When we segmented the tumors, we created multiple segmentation nodes from multiple volumes. If we want to collate all of the segmentations into a single OBJ file, we need to collate the segmentations into one segmentation node.

img-name

This screengrab illustrates the multiple volumes (gray cubes) and multiple segmentation nodes (brain icons). Here we have three Segmentation nodes: SegTumor1, SegTumor2, and MRBT1SkullStrip. Each node contains one segmentation: Tumor1, Tumor2, or brain, respectively.

Collate Segmentations into One Node

  1. Switch to the Segmentations module
  2. For the Active segmentation, select Create New Segmentation as... and enter "AllSegs" in the pop-up dialog
  3. Switch to the Data module — you should see the new "AllSegs" mode
  4. Clone each segmentation (Tumor1, Tumor2, or brain) by right-clicking on the segmentation and selecting "Clone"
  5. Drag the clones to the AllSegs node

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Export Segmentations

  1. Switch back to the Segmentations module
  2. Select the "AllSegs" segmentations
  3. Repeat the steps to export the segmentations into a single OBJ file
  4. make sure to set the reference volume to MRTumor1

Sketchfab

Post your models on Sketchfab.

Instructions for posting on Sketchfab