Study of controlling pointing devices for people with physical disabilities

这项工作的目的是通过检查光标控制的便利性来表征指向设备的操作，以改进辅助技术并为身体残疾的用户生产光标移动控制软件（CMC）。为了完成这项工作，光标移动实验采用两种手动操作方式；食指和拇指，在三种大小的轨迹球上。因此，为了实现光标的完全控制，优化指针设备的操作性能，需要独立控制光标移动的方向和速度，以满足身体残疾用户的个性化需求。CMC实现了以下三种光标控制方式。独立控制模式：这种控制模式可以在每次光标移动时考虑任意方向为上、下、左、右。双向模式：这是一种控制模式，如果光标在设定的区域内，它可以垂直或水平移动。可选模式：这是在一个平面上移动的控制模式，无论光标的移动角度如何，都可以垂直或水平移动。

The purpose of this work was to characterize the pointing device operations by examining the ease of cursor control in order to improve assistive technology and to produce cursor movement control software(CMC) for users with physical disabilities. For the purpose of this work, the cursor movement experiments were performed using two types of manual operation ; the index finger and the thumb, on three sizes of trackballs. As a result, to achieve full cursor control and optimize the operational performance of the pointing devices, the direction and speed of cursor movement needed to be independently controlled to meet the individual needs of the users with physical disabilities. The CMC materialized the following three cursor control modes. The separate control mode : This is the control mode that can consider arbitrary directions to be upper, lower, the left and the right direction in each cursor movement. The bidirectional mode : This is the controlled mode so that the cursor can move vertically or horizontally if it is within a set area. The alternative mode : This is the control mode with movement on one plane, vertically or horizontally, regardless of the movement angle of the cursor.