摘要
可见光通信技术的发展为室内定位提供了新的契机。为了提高室内定位精度,文中提出一种基于视觉信息的可见光通信室内定位方法。该方法通过LED灯发送可见光通信信息,并将低分辨率的光电二极管传感器阵列接收到的可见光通信信息与手机终端的前置摄像头接收到的视觉信息进行融合,实现室内定位。同时,阐述了两种不同信息源的匹配融合的方法,并针对手机终端的前置摄像头与多盏LED成像之间的相互关系,提出了改进的共线方程模型。当输入数据为终端传感器接收到的LED灯可见光信息、相关视觉信息以及手机前置摄像头参数时,利用该模型可得到手机终端的三维坐标信息。文中针对定位模型进行了半实物仿真,验证了定位方法的可行性。根据仿真结果,定位精度达到分米级。
The development of visible light communication provides a newopportunity for indoor positioning. In order to improve indoor positioning accuracy,a positioning method using visible light communication based on visual light information is proposed,which is fusing visible light information received by low- resolution photo diode array and visual information received by front facing camera to realize the indoor positioning. At the same time,a fusion method for two different information matching is discussed,and for the relationship between the front facing camera and the LEDs＇ imaging,an improved collinear equation model is proposed. When the input data is the visible light information,the relevant visual information and the parameters of front facing camera from LEDs＇ light,the 3D coordinate information of the mobile terminal is obtained by using the model. A hardware- in- loop simulation has been verified and analyzed. According to the results of the simulation,3D positioning accuracy is up to decimeter level.
出处
《计算机技术与发展》
2016年第1期200-204,共5页
Computer Technology and Development
基金
国家自然科学基金资助项目(91438207)
关键词
视觉信息
共线方程
室内定位
可见光通信
visual information
collinear equation
indoor positioning
visible light communication
