中文摘要：

针对GF-1卫星影像正射纠正后相邻影像接边精度不高,容易出现错位问题,提出利用SIFT算法自动提取控制点和连接点,区域网平差的方法进行区域正射纠正。通过GF-1卫星WFV传感器卫星影像的区域正射纠正试验表明,采用SIFT算法可以自动提取大量的控制点和连接点,影像定位精度在航向方向和扫描方向的RMS值均小于1个像素,相邻影像接边达到了无缝拼接的水平,效果较好。

英文摘要：

Using the method of SIFT algorithm automatically extracts the control point and the tie point,block adjustment for block ortho-rectification to solve the problems that GF-1 satellite image ortho-rectified image edge matching accuracy is low and prone to misalignment. Through the block ortho-rectification test of GF-1satellite WFV sensor image shows that SIFT algorithm extracts a large number of control points and tie points,the position accuracy RMS values are less than 1 pixel in heading and scanning direction,adjacent image edge is achieving a seamless mosaic level,good results have been achieved.