Detekcija vozila u video sekvencama pribavljenim s povišene lokacije

undergraduate thesis

• Title (english): Vehicle detection in video sequences acquired from above the road
• Author: Armin Tirić
• Mentor: Zoran Kalafatić (mentor)
• Committee member: Zoran Kalafatić (predsjednik povjerenstva)
• Committee member: Alan Jović (član povjerenstva)
• Committee member: Zvonimir Pavlić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-06-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

U ovom radu je opisan postupak za detekciju vozila s povišene lokacije. Opisane su dvije metode za rješavanje navedenog problema. Prva metoda je temeljena na slikama razlike između susjednih slika koji predstavlja jednostavan pristup i temelji se na oduzimanju intenziteta pixela slika koje su zadane u sivim tonovima. Metoda se pokazala učinkovitom u detektiranju gibajućih vozila u optimalnim uvjetima dok problemi nastaju kada se vozilo prestane gibati. Druga metoda je detekcija mješavinom Gaussovih gustoća vjerojatnosti koja se temelji na određivanju prilagodljive pozadine. Metoda mješavine Gaussovih gustoća vjerojatnosti je efikasno riješila problem detekcije i vozila koja se ne gibaju, ali je pokazala probleme lažnog detektiranja objekata zbog slabog faktora učenja ( faktora zaboravljanja ) .

Abstract (english)

Topic of this final work is about vehicle detection from elevated location. Two methods for solving this specified problem are described in this work. The first method is a simple approach which is based on the substraction of pixel intensities of grey images. This method is proved to be effective in detecting vehicles in optimal conditions but problems occur when the vehicle stops moving. The second method is the detection by a mixture of Gaussian densities which enables adaptive background modeling. The method of mixture of Gaussian densities effectively solves the problem of detecting vehicles that are not moving but it has some problems of misrepresentation of objects due to small learning factors (factors of forgetting).

• Keywords: slike razlika; mješavina gaussovih razdioba; detekcija; vozilo
• Keywords (english): differential images; MOG; vehicles; detection
• Language: croatian
• URN:NBN: urn:nbn:hr:168:246526
• Study programme: Title: Computing; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 14:05:22