一种基于图割算法的低成本指尖触控系统

A Low-cost Fingertip Touch Control System Based on Graph Cuts Algorithm

文章针对大多数笔记本电脑不提供触控交互方式的现状,提出了一种低成本的指尖触控系统,使普通笔记本电脑屏幕也能满足用户触控交互的需要,其仅需笔记本电脑的自带摄像头通过平面镜的反射完成触屏检测,具有人机距离限制小和硬件成本低等诸多优点。利用手指会在屏幕上产生倒影的特性,通过识别手指与手指倒影间的距离,实现手指触屏的识别。文章提出了一种结合阈值和图论的手指自动分割算法。此算法通过阈值提取获取手指和倒影的种子像素,并结合图论算法进行手指和倒影分割。实验结果表明,该交互系统在不同实验环境下有较好的表现,能够完成手指触控识别,满足用户的交互需求。

This paper addresses the current situation that most notebook computers do not provide touch control interaction,and proposes a low-cost fingertip touch control system,so that ordinary notebook computer screens can also meet the needs of user touch control interaction,which only requires the notebook computer's own camera through the reflection of the plane mirror to complete the touch screen detection,with a small human-machine distance limit and low hardware costs and many other advantages.It uses the feature of finger reflection is on the screen,then the finger touch screen recognition is achieved by recognizing the distance between the finger and the finger reflection.An automatic finger segmentation algorithm combining threshold and graph theory is proposed in the paper.This algorithm extracts through threshold and obtains the seed pixels of fingers and reflections,and performs finger and reflection segmentation by combining graph theory algorithm.The experimental results show that the interactive system has good performance in different experimental environments and can complete finger touch control recognition to meet the user's interaction requirements.