摘要
为了满足地理国情监测、灾害应急保障需要快速响应和服务的应用需求,该文提出一种无地面控制的无人机影像全自动快速拼接方法。该方法利用尺寸不变特征匹配和相关系数匹配获取分布均匀且高精度的像点观测,通过自由网光束法平差获取定向参数和加密点物方坐标,最后通过结合影像的色彩一致性处理和顾及重叠的面Voronoi图接缝线网络快速拼接获取测区影像图。实验结果表明:所提出的方法可有效解决无人机影像的快速拼接问题,获取的影像图具有较高的拼接精度,同时色彩过渡自然。
For the demand of geographical conditions monitoring and disaster emergency security,this paper presents an automatic and fast method for mosaicking UAV images without ground control data.First,high density match points are obtained by SIFT matching and correlation coefficient matching.Then it acquires the orientation parameters of each image and three-dimensional coordinates of the match points using bundle adjustment.After the color consistency processing,it quickly mosaick the ortho-image of the whole zone based on the seamline network automatically generated using area Voronoi diagrams with overlap.Experiments of two different kinds regions which are mountainous area and flat area show that the given method can efficiently solve the problem of fast mosaicking of UAV images with good precision and nice color consistency.
出处
《遥感信息》
CSCD
北大核心
2015年第2期26-30,共5页
Remote Sensing Information
基金
国土资源部公益基金资助项目(201111010-6)
