Thesis (MScEng)--Stellenbosch University, 2012. / ENGLISH ABSTRACT: Markerless mobile Augmented Reality (AR) is currently being limited by the
processing power available on smartphones and tablet-like devices, which also
limits the research that can be done using these devices. To overcome the
problem of limited processing power and the problem of being limited to the
device's original hardware, the development of a laptop-based prototype platform
was proposed. The use of a laptop was motivated by the processing power
it o ers and because it is self-contained, but still allows for expansion.
The implemented system consists of a handheld tablet-like display with
touch input, attached to a backpack which houses the processing unit of the
laptop. The tablet portion of the device is equipped with stereo cameras and
inertial sensors to allow for optical inertial hybrid tracking. A basic optical
inertial Extended Kalman Filter based tracking system was implemented as
proof of the concept.
A modular design was implemented that allows for components to be added
to or removed from the prototype, thereby allowing for rapid prototyping with
various combinations of sensors and cameras. Furthermore, multi-core and
parallel processing, on both the GPU and CPU, was used to achieve fast
processing with only minimal optimisations.
The conceptual design, practical implementation, and testing of the prototype
platform are covered in this document, along with recommendations for
both continued research and the creation of similar systems. / AFRIKAANSE OPSOMMING: Die veld van merkervrye mobiele Toegevoegde Realiteit (TR) word tans beperk
deur die verwerkingsvermo e van slimfone en tablette. Die beperking a ekteer
ook die vermo e om navorsing te doen op hierdie toestelle. Nog 'n struikelblok
met navorsing op hierdie tipe toestel is dat die hardeware nie verander
of aangepas kan word nie. Om die beperkings in verwerkingsvermo e en die
hardewarebeperking te oorkom, word daar voorgestel dat 'n mobiele stelsel
ontwerp word wat oor genoegsame verwerkingvermo e beskik. Die voorgestelde
prototipe-stelsel word gebaseer op 'n kragtige skootrekenaar, omdat dit die
nodigde verwerkingvermo e besit en mobiliteit verskaf in 'n selfstandigeeenheid.
Die voorgestelde stelsel is ge mplementeer deur 'n handdraagbare aanraakskerm
te skep, wat verbind is met die rugsak wat die verwerkingse enheid
van die skootrekenaar huisves. Die handdraagbare gedeelte van die skerm is
toegerus met stereovisie-kameras en inersiesensors. Hierdie sensors en kameras
is dan gebruik om 'n basiese hibriede optiese-inersie uitgebreide Kalman
lter-gebaseerde posisievolgingsstelsel te skep, as bewys van die voorgestelde
konsep.
'n Modul^ere ontwerp is gebruik, omdat dit toelaat dat komponente maklik
vervang of bygevoeg kan word. Die modul^ere ontwerp maak dit moontlik om
verskeie sensors spoedig te toets en te vergelyk. Verder is beide die SVE- en
GVE-eenhede van die skootrekenaar se parallelle verwerkingsvermo e benut.
Sodoende is 'n ho e verwerkingspoed bereik, deur slegs minimale optimering
toe te pas.
Die konsepontwerp, -implementering en -toetsing van die stelsel word in
hierdie dokument beskryf. Saam met die beskrywing word daar ook aanbevelings
gemaak vir opvolgende navorsing, asook vir die ontwerp van soortgelyke
stelsels.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/71623 |
| Date | 12 1900 |
| Creators | Minnaar, Waldo |
| Contributors | Van Rooyen, G-J., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | 179 p. : ill. |
| Rights | Stellenbosch University |
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