We’re very interested in using the Structure hardware and Scanner iOS app to obtain full-body surface scans. However we’re having a number of quality issues with Structure output. I’m wondering if I’m expecting too much from the standard iOS apps and whether I need to use the SDK in order to achieve desired results?
We have a Structure with 128GB iPad Air 2 iOS 9.1, viewing in Rhinoceros for Mac 5.1.
For example, and noting infra-red caveats for working with black and shiny surfaces:
- Scanning indoors, following an indoor calibration, it’s very difficult to get the subject within the scan capture cube. The Scanner app seems to want to scan the room not the subject in front of it.
- Scanning outdoors, following a regular calibration, the Scanner app seems very sensitive to light levels, works best with overcast lighting but again very difficult to find the optimum level.
- Resolution accuracy seems poor, even after immediate calibration. Far too much detail is smoothed out. We’re interested in 8mm diameter markers attached to the body.
- The integrity of the scan mesh is poor, with difficulty scanning closed volumes, and webbing between the legs and between the arms and the body.
I’ve considered normalising the lighting with the use of photography LED floodlamps such as the Ikan iLED312-v2 (and see forum thread below) however right now the overall poor quality of full-body scans is leading me to look elsewhere.
Welcome your advice on persisting with Structure and investing time in the SDK.
Thanks – Bill Johnson
School of Sport Science, Exercise and Health
The University of Western Australia