A novel haptic stylus for mobile terminal

Abstract

Haptic interaction is a new interactive function in human-computer interaction of mobile terminal. In this work, we present a novel haptic stylus for mobile terminal, which can achieve haptic display of visual image. The haptic stylus generates force feedback and tactile feedback through electromechanical structure and piezoelectric ceramics respectively. In order to obtain the haptic information of image, we adopt shape from shading (SFS) algorithm to extract height information of image, which is presented in the form of force feedback. And fractional differential method is used to extract edge information of image, which is expressed in the form of tactile feedback. The software system of haptic interaction is developed based on Android system. And the mode of communication is Bluetooth. Finally, the haptic perception experiment is conducted to investigate effect of perception with different haptic stylus and different mode of haptic interaction.