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测绘学报  2015 

视频测量影像序列椭圆形人工目标点快速识别和跟踪方法

DOI: 10.11947/j.AGCS.2015.20130452, PP. 663-669

Keywords: 视频测量,影像块,椭圆识别,数学形态学,最小二乘法

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Abstract:

针对视频测量建筑物健康监测获取海量影像序列数据快速、准确识别和跟踪目标点的需求,提出基于影像块技术的椭圆形目标点识别和跟踪完整算法。该算法采用影像分块技术降低数据处理量,实现椭圆形目标点跟踪,集成数学形态学和椭圆几何属性特征,消除图像块边缘检测的非椭圆边缘信息,实现椭圆轮廓的提取,并采用最小二乘法拟合椭圆中心实现亚像素定位,快速、准确地实现视频测量建筑物健康监测椭圆形目标点的识别与跟踪。试验结果表明该方法获取的椭圆中心点像素坐标的RMS残差优于0.025个像素,且相对于随机Hough变换和模板识别算法,跟踪效率提高5倍以上。

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