3D reconstruction system on smartphone

Lelas, Marko

prikaz prve stranice dokumenta 3D reconstruction system on smartphone

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doctoral thesis

3D reconstruction system on smartphone

Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. urn:nbn:hr:168:800879

Lelas, Marko

University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electronic Systems and Information Processing

Cite this document

APA 6th Edition

Lelas, M. (2017). 3D reconstruction system on smartphone (Doctoral thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:800879

MLA 8th Edition

Lelas, Marko. "3D reconstruction system on smartphone." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. https://urn.nsk.hr/urn:nbn:hr:168:800879

Chicago 17th Edition

Lelas, Marko. "3D reconstruction system on smartphone." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. https://urn.nsk.hr/urn:nbn:hr:168:800879

Harvard

Lelas, M. (2017). '3D reconstruction system on smartphone', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 26 March 2023, https://urn.nsk.hr/urn:nbn:hr:168:800879

Vancouver

Lelas M. 3D reconstruction system on smartphone [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2017 [cited 2023 March 26] Available at: https://urn.nsk.hr/urn:nbn:hr:168:800879

IEEE

M. Lelas, "3D reconstruction system on smartphone", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:168:800879

Cite this item: https://urn.nsk.hr/urn:nbn:hr:168:800879

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Metadata

Title	3D reconstruction system on smartphone
Title (croatian)	Sustav za trodimenzionalnu rekonstrukciju na pametnom telefonu
Author	Marko Lelas
Mentor	Tomislav Pribanić (mentor)
Committee member	Tomislav Pribanić (član povjerenstva)
Granter	University of Zagreb Faculty of Electrical Engineering and Computing (Department of Electronic Systems and Information Processing) Zagreb
Defense date and country	2017, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Computing Data Processing
Universal decimal classification (UDC)	654 - Telecommunication and telecontrol
Abstract	In order to develop a novel 3D reconstruction system on smartphone, this work first gives an analysis of the state of the art active and passive stereo 3D approaches. Drawbacks as well as the advantages of the mentioned approaches are identified and a novel approach to stereo correspondence estimation is presented as a combination of the main ideas of the approaches. In brief, the proposed approach considers image pixel values both in spatial and time domain. That way inherent downsides, common to passive stereo based approaches (problems in reconstructing poorly textured surfaces and surfaces with repetitive patterns) and active stereo based approaches (influence of changing surface albedo on the reconstruction results), are significantly reduced. Secondly, an overview of hardware and software properties of smartphones is presented, pointing out the main requirements and limitations which smartphones as a deployment platform impose on the application. Stereo correspondence estimation methods presented in this work leverage the hardware available on the smartphone (flash, two rear facing cameras) obtaining satisfactory 3D reconstruction results while keeping the requirements on the computational resources as low as possible. Following the novel approach about 3D reconstruction, a novel 3D surface registration method is also presented. It accomplishes an accurate and computationally feasible registration utilizing the measurement data from only two sensors: the accelerometer and magnetometer available on the smartphone. Besides a detailed explanation of the presented methods, an exhaustive evaluation of the proposed ideas is provided too.
Abstract (croatian)	S ciljem razvoja inovativnog sustava za trodimenzionalnu rekonstrukciju na pametnom telefonu, ovim radom dana je analiza trenutnog stanja znanstvenog područja aktivne i pasivne stereo trodimenzionalne rekonstrukcije. Identificirane su prednosti kao i nedostaci pojedinih pristupa te je predstavljen inovativan pristup računanja stereo korespondencije objedinjavajući temeljne ideje navedenih pristupa. Predstavljena metoda analizira slikovne elemente u slikama para stereo kamera i u vremenskoj i u prostornoj domeni. Pokazano je da se takvim pristupom utjecaj inherentnih nedostataka pasivnih stereo pristupa (problemi pri rekonstrukciji slabo teksturiranih površina odnosno površina koje su teksturirane repetitivnim uzorcima) kao i aktivnih stereo pristupa (utjecaj promjena u reflektivnosti rekonstruirane površine na kvalitetu rekonstrukcije) bitno smanjuje. Također, naveden je pregled sklopovskih kao i programskih specifičnosti pametnih telefona ističući bitna ograničenja i zahtjeve koje pametni talefoni kao ciljana platforma nameću aplikacijama. Predstavljena metoda određivanja stereo korespondencije optimalnim korištenjem sklopovskih specifičnosti platforme (led izvor svjetlosti, dvije kamere na stražnjoj strani pametnog telefona, senzori) uspijeva postići zadovoljavajuće rezultate trodimenzionalne rekonstrukcije, pri tome zadržavajući zahtjeve za iskorištavanje računarskih resursa na najnižoj mogućoj razini. Nastavno na predstavljenu metodu trodimenzionalne rekonstrukcije, predstavljena je i inovativna metoda registracije trodimenzionalnih površina koja uspijeva ostvariti registraciju zadovoljavajuće točnosti predstavljajući zahtjeve za računarskim resursima u okvirima ostvarivog na ciljanoj platformi. Smanjenje zahtjeva za računarskim resursima odnosno smanjena kompleksnost metode u odnosu na usporedive metode iz tog područja ostvarena je korištenjem mjernih podataka senzora (akcelerometra i magnetometra) dostupnih na većini pametnih telefona. Uz detaljno objašnjenje predstavljenih metoda, rad također donosi i iscrpnu evaluaciju ostvarenih rezultata.
Keywords
Keywords (english)
Language	english
URN:NBN	urn:nbn:hr:168:800879
Study programme	Title: Electrical Engineering and Computing Study programme type: university Study level: postgraduate Academic / professional title: Doktor znanosti elektrotehnike i računarstva (Doktor znanosti elektrotehnike i računarstva)
Type of resource	Text
Extent	100 str. ; 30 cm.
File origin	Born digital
Access conditions	Closed access
Terms of use
Repository	FER Repository
Created on	2019-04-09 14:47:33