sift特征提取，sift图像拼接，OPENCV读取视频，gdal读取大的遥感图像，gdal建立金字塔，gdal分割图像（需配置3个库，GDAL，GSL,OPENCV）。-feature extraction sift, sift image stitching, OPENCV read the video, gdal read large remote sensing image, gdal build pyramids, gdal segmented image (you need to c