This tutorial was adapted from the full-length tutorial page on the Trnio website.
Trnio is a free 3D scanning application for iOS devices. Plus Trnio includes native Sketchfab and Facebook sharing. You can download it from the App Store and check out the quick video tutorial below:
Using Trnio to scan
Trnio offers two ways to scan, and both are accessible through the camera button at the bottom center:
- Object mode - guides a user around an object assuming the user moves in a circular pattern around the object
- Scene mode - allows for free formed scanning. It is great for outdoors, and larger items
When you're ready to scan, slowly rotate around the object while Trnio takes multiple photos.
Green dots are images taken. If you move too fast, an orange dot appears. Simply move over the orange dot to continue.
After your scan is complete, a project is created and put in the Queue. The Queue is accessible from the right-side menu. A low-resolution preview of your scan is available about 60 seconds after it is complete.
You can trim your model if excess was captured. Trimming is done on the preview scan, and is applied to your hi-resolution scan.
At times, processing a scan will return an error. You'll might see these three error recovery options:
- Retry preview - removes any trimming and re-does preview.
- Retry Publishing - Tries to process hi-res images. This will upload images, if needed.
- Delete Project - Deletes scan from phone and servers.
Scans can fail because of low lighting, shiny or detail-less objects, or the images are blurry from moving too fast.
Uploading from Trnio to Sketchfab
Exporting A Model
Once complete, all models are available for download.
Plus, you can use free programs like Meshlab or Blender to view and manipulate your model. Or you can upload your 3D scan directly to Sketchfab by clicking the export option in the top banner of your model page.