block ortho－rectification for satellite images
-
摘要: 针对大区域卫星影像正射纠正所面临的问题提出了利用平面平差的方法来求解卫星影像定向参数然后进行区域正射纠正的策略 该方案能够保证大区域卫星影像正射纠正后绝对定位精度以及相邻影像接边处相对定位精度的一致性 通过资源三号测绘卫星正视全色影像的实验表明仅利用少量平面精度为5m的地面控制点大区域影像经过平面平差后独立检查点的平面精度优于7m满足了我国1∶5万地形图的精度要求 此外利用平面平差后每景影像的定向参数进行区域正射纠正相邻影像接边处连接点的像方精度优于0．5个像素达到了几何上无缝镶嵌的程度Abstract: this paper proposes a strate gy that uses a planar block ad justment method to solve theproblem of ortho－rectification for the orientation parameters of all satellite images and block ortho－rectification for each satellite image．this strate gy can ensure the uniformity of absolute positioning accurac y and relative position of satellite images which are ortho－rectified．using tests of panchromatic nadir 13９images from zy－3surveying satellitesshow that by using onl y a small number of ground control points gcps whose planar accurac y is 5mthe planar accurac y of inde pendent check pointsicpswas better than 7 mafter planar block ad justment．this accurac y meets chinese 1∶50 000topogra phic map accurac y re quirements．in additionthe accurac y of the tie points tpsin ad jacentimages was better than 0．5pixelsachieving a seamless mosaic level in geometr y．
-
Keywords:
- block ortho－rectification /
- satellite images /
- plane ad justment /
- image edge match /
- accurac y
-
计量
- 文章访问数: 1731
- HTML全文浏览量: 61
- PDF下载量: 659
下载:
