二维图像序列直线的提取及跟踪匹配研究  

Extraction and Tracking Match of 2-D Image Array Straight Line

作　　者：简宏伟[1] 陈震[1] 

机构地区：[1]南昌航空大学自动化学院,江西南昌330063

出　　处：《现代电子技术》2009年第20期66-68,共3页Modern Electronics Technique

摘　　要：在基于直线光流场的三维重建研究中首先要对连续多帧单目图像序列进行处理,主要是二维图像直线的提取、跟踪及匹配。在此利用改进的Hough变换对图像进行直线提取,利用Hough变换的点线对偶性,即可将对图像序列中的特征直线的跟踪与匹配问题转化为在参数空间(ρ,θ)中对特征点运动轨迹的参数估计,可以采用卡尔曼滤波器对运动目标进行初步跟踪,预测其大致位置,再通过建立模板与图像的匹配相关系数判定搜索到的特征点的精确坐标。实验结果表明,该方法取得了较好的实验结果。During the study of reconstructing 3D based on straight line optical flow, a sequence of monocular images should be processed first. Using improved Hough transform to extract lines,and a tracking characteristic lines method which is based on Hough transform is presented. Rather than tracking lines in image space directly, the method makes use of duality theory in Hough transform in order to transform line - tracking in image space into point - tracking in Hough space. The first step designing is adopting Kalman filter to preliminary track the motion target, then accurate characteristic point location is searched by using build - up modeling board and image matching correlation modulus. Experiment result using composed image array shows that the presented method provides a good estimation of the characteristic lines tracking.

关 键 词：边界算子 HOUGH变换 卡尔曼滤波器 模板 

分 类 号：TN919[电子电信—通信与信息系统]