Sustav za raspoznavanje igraćih karata

undergraduate thesis

• Title (english): System for playing card recognition
• Author: Josip Knežević
• 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: 2015-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

Ovaj rad razmatra prepoznavanje igraćih karata korištenjem tehnika obrade slike. Obrada slika obavlja se kroz niz koraka: pronalaženje rubova, pronalaženje najbolje četverokutne konture, perspektivna transformacija. Prepoznavanje se također vrši preko obrade slike korištenjem algoritama Floodfill (za brojeve) te pogodi i promaši transformacijom (za slova i oznaku boje). Postupak se pokazao djelomičnom uspješnim. Dobiveni su točni rezultati na 51 od 52 testne slike pri dobrom osvjetljenju, dok za lošije osvjetljenje su i malo lošiji rezultati. Sve metode i postupci korišteni pri prepoznavanju igraćih karata detaljno su opisani kroz rad.

Abstract (english)

This thesis presents implementation of playing cards recognition system using image processing. Processing is done through several steps: edge detection, finding quadrilateral contour, perspective transform. Recognition is also done by using image processing algorithms such as Floodfill (number detection) and Hit-and-miss transform (for letters and suits). The procedure proved to be partially successful. 51 out of 52 test cards are classified correctly in well-lit environment, while the results in low-lit environment are slightly worse. All methods and procedures used in playing card recognition are described in detail in thesis.

• Keywords: prepoznavanje igraćih karata; pronalaženje kontura; detekcija rubova; matematička morfologija; floodfill; pogodi i promaši transformacija; perspektivna transformacija
• Keywords (english): playing cards recognition; contour finding; edge detection; mathematical morphology; floodfill; hit-and-miss transfrom; perspective transform
• Language: croatian
• URN:NBN: urn:nbn:hr:168:944749
• 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 09:41:18