北京交通大学学报2017，Vol.41Issue(5)：37-42,6.DOI:10.11860/j.issn.1673-0291.2017.05.006
投射式电容屏触控轨迹Z字形噪声快速滤波算法
Fast filtering algorithm for zigzag noise of touch tracking of capacitive touch panels
摘要
Abstract
Capacitive Touch Panels(CTP) have become the mainstream of human-computer interaction interface in intelligent terminal.Generally,zigzag noise of touch tracking caused by voidage distribution of screen eletrode makes impact on the accuracy of predictions of touch positions.A fast smooth processing algorithm for capacitive touch panels based on IMAF filter model has been proposed in this paper.Non-linear filter model applicable to zigzag pulse interference of touch tracking has been established on the basis of characteristic and genetic analysis of zigzag noise of original touch tracking in touch panels.Temporal serial trajectory data is processed by a first-in first-out fast iterative method so as to achieve the smooth processing of touch tracking of capacitive touch panels.Experimental results have indicated that this proposed algorithm has the capacity of linear and statistical filter processing.Compared with traditional filtering algorithm of touch tracking,this proposed algorithm can achieve effective smooth processing for zigzag noise of touch tracking.关键词
信号处理/电容触摸屏/Z字形噪声/IMAF模型/轨迹平滑Key words
signal processing/capacitive touch panel/zigzag noise/IMAF model/smooth trajectory分类
信息技术与安全科学引用本文复制引用
李居朋,张祖成,杨佳烁,樊磊..投射式电容屏触控轨迹Z字形噪声快速滤波算法[J].北京交通大学学报,2017,41(5):37-42,6.基金项目
国家自然科学基金项目(81671034) （81671034）
北京市科技计划项目(D151100000415002)National Natural Science Foundation of China (81671034) （D151100000415002）
Beijing Science and Technology Plan Project(D151100000415002) （D151100000415002）
