摘要
针对线阵推扫卫星影像的核线特点,研究了基于平行特征的核线影像生成方法。首先将影像分块并利用有理函数模型和投影轨迹法计算核线对,在分析核线斜率及直线拟合误差的基础上研究核线的平行特征,平行性好时旋转核线倾斜角相同的角度生成核线影像,最后以同名点上下视差为标准评价方法的可行性。试验结果表明,基于平行特性直接旋转一定角度的核线影像生成方法虽不具备普遍适用性,但对World View-2卫星4波段多光谱和全色等特定影像是可行的。
In view of characteristics of epipolar imagery from push-broom scanner sensors,an epipolar imagery generation method based on the parallel relationship is studied. Raw imagery is firstly divided into several blocks,then the rational function model and the projection track method are adopted to calculate the approximate epipolar lines. By analyzing the slope and fitting error of epipolar lines,raw imagery can be rotated a certain angle to generate epipolar imagery. Finally,the feasibility of this method can be examined by vertical parallax. The experimental results show that although the rotation method is not of general applicability,it is certainly feasible for World View-2＇s 4 band multispectral and pan imagery.
出处
《测绘通报》
CSCD
北大核心
2017年第1期43-47,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41101396)
上海市科学技术委员会科研计划(14590502200)
关键词
线阵影像
投影轨迹法
有理函数模型
平行特性
上下视差
linear push-broom imagery
projection track method
rational function method
parallel features
vertical parallax
