Mehran University Research Journal Of Engineering &
Technology (HEC Recognized In Category "X")
Publishing Since 1982.

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Gesture based Roman to Perso-Arabic Script Input for Touch User Interfaces

Keywords: Urdu Text Input, Perso-Arabic Scripts·Roman Urdu, Transliteration, Gesture Keyboarding, QWERTY Layout

Mehran University Research Journal of Engineering & Technology

Volume 29 ,  Issue 4



This paper proposes a method for Urdu Text Input that combines commonly used Roman Script and Gesture Typing on touch screens for handheld devices. The keyboard layout used is QWERTY however the system produces output in the Perso Arabic Script. For pre-processing, each word in the Urdu word list is transliterated and then mapped to a string generated underneath the straight line movement between consecutive letters in the word. At the time of user input these strings are used as templates to compare with the movement pattern generated by user input using a modified version of Edit Distance Algorithm. n-gram models are used to facilitate Urdu Text auto complete and next word predictions