3D scanning forms part of our front-end design phase which ensures our products fit like a glove. Zach Johannesen gives us a rundown on his 3D scanning process.
For each object we scan, multiple smaller scans are taken and ‘auto aligned’ in the scanning software. Our scanner uses object geometry and texture to track its relative position. I like to apply tracking dots so I can manually align the individual scans onsite to ensure no areas have been missed. I also take hand measurements and compare these to the 3D scan to ensure accuracy.
Once back in the office I process the multiple smaller scans as follows:
- Fine Registration of smaller scans – frames from each scan are analysed and aligned (tracking error frames are removed)
- Master Scan – smaller scans are aligned
- Master Scan Global Registration – aligned scans are analysed in relation to each other and further aligned in the master scan
- Master Scan Fusion – all frames are converted into a single surface model (for export into CAD)
- Model Simplification – file size reduction (raw 3D scans are large for CAD import)
- Model Alignment – orientation with X, Y, Z planes
The 3D scan is now ready for one of our designers to import into CAD and start the product design.
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