Aligning top and bottom scans
Register separate orientations using geometry or targets that remain fixed relative to the object.
The reference has to move with the object
OPEN FULL SIZE ↗- Shared
- Fixed object references
- Align
- Separated non-collinear features
- Inspect
- No double skin at the seam
TECHNICAL NOTES///
Register separate orientations using geometry or targets that remain fixed relative to the object.
GOALRun the first test described in this guide and record the result for aligning top and bottom scans.
EQUIPMENT
- Scanner / mesh workflow
- Representative test model
- Measurement or inspection method
STEPS
- Choose a broad overlap band visible in both orientations. Add an asymmetric reference fixed to the object if its shape is too repetitive.
- Capture the first side, then turn the object without changing the reference-to-object relationship.
- Capture the second side and identify several well-separated non-collinear corresponding features for coarse alignment.
- Refine alignment over trustworthy overlapping surfaces, inspect a section and check an independent dimension before merging.
TROUBLESHOOTING
- Markers stuck only to the table move relative to the object when it flips. Symmetric shapes can align incorrectly while showing a deceptively low local error. Do not smooth away a double surface.
THINGS TO WATCH FOR
Markers stuck only to the table move relative to the object when it flips. Symmetric shapes can align incorrectly while showing a deceptively low local error. Do not smooth away a double surface.
RESULTThere is no duplicated skin or step at the seam, and independent measurements agree.
DEVELOPMENT HISTORY///
Imported as an independent manifest record; public copy keeps uncertainty visible.
Connected the newer project records: HOW-PIKA-001, CAD-SMOKER-CAP-001. Existing test limitations remain in place.
SPECIFICATION///
RELEASED MATERIAL///
There is no duplicated skin or step at the seam, and independent measurements agree.
The record keeps what is known at this revision. Unfinished tests stay unfinished here.