多通道脑电波信号测量电极的图像法坐标测取  

Image Processing Method for Coordinate Measurement of Multi-channel EEG Signal Measuring Electrodes

作　　者：梁威[1] 陈宜俍[2] 

机构地区：[1]郑州轻工业学院控制工程系,河南郑州450002 [2]郑州大学化工学院,河南郑州450002

出　　处：《郑州大学学报（工学版）》2004年第2期70-73,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：美国国家卫生部资助项目(NS39047)

摘　　要：针对生物医学信号中测试点电极坐标的测量,以脑电波测试为例,提出了"无接触式图像处理"新方法:以数字相机获取测试图像,然后对测试点电极信息进行计算机图像提取和分离处理,再采用数据查询对比与线性拟合近似实现三维重构.实验结果表明,80%的测试点都能满足精度要求,是实现"以软代硬"传感智能化的有益尝试.　For many biomedical signal measurements, providing coordinate value of measuring electrodes is a basic requirement.However,it is a challenging task for multi-channel devices.Taking the EEG measurement as example,we developed a new approach named 'no-touching image processing':A digital camera is utilized to get images,concerned electrode information is then segmented from raw images and 'distilled' by means of computer with image processing techniques.The data looking up and linear matching are used to implement 3-D reconstruction of the image.Experimental results show that 80% of measuring points fulfill accuracy requirement.The method is a helpful attempt in implementing smart sensing so-called 'taking software instead of hardware'.

关 键 词：脑电波信号测量 图像处理 坐标辨识 生物医学信号 电极坐标 数据查询 

分 类 号：R741.044[医药卫生—神经病学与精神病学] TP391.41[医药卫生—临床医学]