摄影测量中一种基于HEIV模型的编码识别方法  

Method about Code Identification Based on HEIV Model in Photogrammetry

作　　者：张文斌[1] 潘广贞[1] 杨剑[1] 戴红飞[1] 

机构地区：[1]中北大学电子与计算机科学技术学院,山西太原030051

出　　处：《电视技术》2013年第5期52-55,共4页Video Engineering

基　　金：山西省科技攻关项目(20090322004);2011年中北大学校科学基金

摘　　要：在摄影测量中,经常发生椭圆点检测错误从而影响三维场景的匹配问题,甚至导致三维重建任务的失败。针对该问题,在基于HEIV(Heteroscedastic Errors-in-Variables)椭圆拟合方法的基础上,设计了一种可纠错的编码点,将信息论中的RS可纠错编码方法用于编码点的设计,并对编码点的解算及提取进行分析。实验表明,该方法大大提高了编码点的抗噪性,在编码出现错误时可以实现纠错,并且能够纠正多位错误,较好地解决了实际应用中编码点识别错误的问题。In the measurement of photography, the error often happens when detecting the elliptic point which affects image matching ,and even causes the failure of 3D reconstruction. To solve this problem, the coding point which can correct the error is being designed based on Heteroscedastic Errors- in-Variables model and the identification and extraction of the coding points are analyzed in this paper. Experimental result shows that this method can improve the robust noise immunity of the coding point, it also can correct the errors automatically when has some errors which resolves the error of distin- guish coding point in practical application.

关 键 词：图像匹配 HEIV 椭圆拟合 RS码 纠错 

分 类 号：TN911.73[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]