Detekce a rozpoznání registrační značky vozidla pro analýzu dopravy

English title

License Plate Detection and Recognition for Traffic Analysis

Language

Czech

Abstract

This thesis describes the design and development of a system for detection and recognition of license plates. The work is divided into three basic parts: licence plates detection, finding of character positions and optical character recognition. To fullfill the goal of this work, a new dataset was taken. It contains 2814 license plates used for training classifiers and 2620 plates to evaluate the success rate of the system. Cascade Classifier was used to train detector of licence plates, which has success rate up to 97.8 %. After that, pozitions of individual characters were searched in detected pozitions of licence plates. If there was no character found, detected pozition was not the licence plate. Success rate of licence plates detection with all the characters found is up to 88.5 %. Character recognition is performed by SVM classifier. The system detects successfully with no errors up to 97.7 % of all licence plates.

Keywords

Licence plate detection, Optical Character Recognition, Czech Licence plate, Cascade classifier, Linear classifier SVM, MSER, Image Processing, Computer Vision

Department

Department of Computer Graphics and Multimedia FIT BUT

Degree Programme

Information Technology, Field of Study Computer Graphics and Multimedia

Files

Thesis text 10.7 MB

Status

defended, grade A

Date

25 June 2015

Reviewer

Hradiš Michal, Ing., Ph.D.

Committee

Smrž Pavel, doc. RNDr., Ph.D. (DCGM FIT BUT), předseda
Herout Adam, prof. Ing., Ph.D. (DCGM FIT BUT), člen
Rogalewicz Adam, doc. Mgr., Ph.D. (DITS FIT BUT), člen
Sedlák Petr, doc. Ing., Ph.D. (DPHYS FEEC BUT), člen
Szőke Igor, Ing., Ph.D. (DCGM FIT BUT), člen
Vašíček Zdeněk, doc. Ing., Ph.D. (DCSY FIT BUT), člen

Citation

ČERNÁ, Tereza. Detekce a rozpoznání registrační značky vozidla pro analýzu dopravy. Brno, 2015. Master's Thesis. Brno University of Technology, Faculty of Information Technology. 2015-06-25. Supervised by Herout Adam. Available from: https://www.fit.vut.cz/study/thesis/13042/

BibTeX

@mastersthesis{FITMT13042,
    author = "Tereza \v{C}ern\'{a}",
    type = "Master's thesis",
    title = "Detekce a rozpozn\'{a}n\'{i} registra\v{c}n\'{i} zna\v{c}ky vozidla pro anal\'{y}zu dopravy",
    school = "Brno University of Technology, Faculty of Information Technology",
    year = 2015,
    location = "Brno, CZ",
    language = "czech",
    url = "https://www.fit.vut.cz/study/thesis/13042/"
}