A Study Of Bending And Twisting Input Modes In Deformable Interfaces

Flexible display technology is developing rapidly in recent years,the flexible display is a kind of organic user interface,compared to the traditional rigid display interface,it can provide a better user experience,such as flexible equipment can bring real thesis experience,intuitive easy to understand the physical interface of high availability,and there is no perfect method of flexible screen interaction leads to develop an effective and reasonable flexible interaction method is especially important for accurate choice of one dimensional target is one of the most basic interaction tasks.Although there have been related researches on flexible screen interaction technology and researchers have designed the gesture of bending input,but they didn't study the bending and twisting input gestures,and they use the method of grading as the system to study the control ability of bending and twisting.We need to make clear the usability of bending gesture and the grade of bending space before we can put forward a set of reasonable suggestions for bending interaction design.The main work of this thesis includes the following aspects:(1)realization of bending interactive device: We use optitrack to build Flex Sheet,a bending interaction system,which is based on optitrack motion to capture the bending state of the bending surface,and can achieve good recognition accuracy and fast response,can simulate the flexible input environment at any time.(2)analysis of the design criterion of bending gesture and realization of bending gesture design in deformed interface:Through the design guidelines and Suggestions of interaction technology we summarized,we designed and implemented two kinds of bending and deformation gestures--"bending" and "twisting",then we propose a physical quantity that describes the degree of bending--curvature.(3)systematic assessment of "bending" and "twisting" gestures and grading of bending space:To evaluate the performance of the two bending gestures we designed,The performance of two kinds of gestures was studied by one-dimensional target selection experiment.After analyzing the experimental data,we get the grade division of bending space and give some reasonable suggestions for bending interaction design.(4)research on the ergonomic model of selecting tasks when the cursor has adaptive amplification : In order to describe the mathematical relationship between task difficulty and selection time in the adaptive zoom cursor target selection task,we proposed a new human ergonomic model--Extended model.In order to verify the applicability of the new model,we compared it with the Fitts' Law model.Through the design of the target selection experiment,the analysis of the data collected shows that the Extended model can better describe the selection task of the cursor with adaptive amplification.