University of Twente Student Theses
RPi-based passive 5-camera system for 3D face acquisition
Valk, D.J. van der (2019) RPi-based passive 5-camera system for 3D face acquisition.
|
PDF
8MB |
| Abstract: | A Raspberry Pi (RPi-) based 5-camera system was analysed for its potential to create high resolution - up to 0.2mm depth steps - 3D reconstructions of faces. A theoretical framework to determine the limits of the system was proposed, including the input depth resolution, a precision qualifier and maximum time synchronisation offsets between the cameras. The theoretical limits however could not (yet) be verified in practice. The found limits for this specific implementation were a max distance of 14cm from the cameras for a 0.2mm input depth resolution, and a theoretical maximum time offset of 0.016ms. A practical methodology was set up to generate a 3D face reconstruction starting from lens choices and adjustments, via calibration to reconstruction and comparison with other references. This resulted in a reconstruction at 0.4m where > 90% of the 3D reconstructed points were max 3mm off compared to a reference, set by a medical 3D face reconstruction device - the 3dMD. Various prospects for further improvement were found. |
| Item Type: | Essay (Master) |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Subject: | 54 computer science |
| Programme: | Electrical Engineering MSc (60353) |
| Link to this item: | https://purl.utwente.nl/essays/79026 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
Show download statistics for this publication
Show download statistics for this publicationRepository Staff Only: item control page