Al-Mramthee, Qusay Omran Mosa, Improvement of Gradient Vector Flow using particle swarm optimization for broken character restoration and classification / Qusay Omran Mosa Al-Mramthee. - xv, 197 pages : illustrations ; 30 cm. Thesis (Ph.D.)-Universiti Kebangsaan Malaysia, 2016. References : page [163]-176. Subjects--Corporate Names: Universiti Kebangsaan Malaysia--Dissertations. Subjects--Topical Terms: Dissertations, Academic--Malaysia.Neural networks (Computer science).