一种触摸坐标计算方法

A computational method of touch point coordinate

近年来,随着多点触摸发展的日益多元化,触摸屏的结构日趋复杂,触摸算法日渐新颖。提出了一种触摸坐标点计算的新方法,将其称为"投壶"算法,意为将满足条件的物体准确投入壶中,此时壶里的权重增加,最后将权重最大的壶视为"真实"即为有触摸点的。实验证明,此算法能够在硬件资源有限的条件下,准确的计算触摸点的坐标,尤其在多点触摸的情况下,能够有效的避免伪触摸点的出现,具备一定的抗干扰能力,具有响应速度快、计算精度高等特点,实现触摸屏的无驱安装。

In recent years, with the development of multi-touch diverse, the structure of the touch screen is more and more complex, the touch algorithm is increasingly fashionable.This paper proposes a new method of calculating the touch point, which is called “pitch pot” algorithm.It means that we will put the object which meets the condi-tions into the pot, by this time the pot’s weight is adding.At last, the heaviest pot is looked as the real pot which means it has the touch point right now .The experimental results show that , under the circumstance of limited hard-ware resources, this algorithm can accurately calculate the coordinates of the touch point, especially in the case of multi-touch.It could effectively eliminate the false touch point, has a certain anti-jamming capability fast response and high accuracy, and achieves no driver installation.