中文说明：使用sift+RANSAC完成两幅图像的特征提取和匹配，并将较小图像区域在另一幅中用方框圈出来。运行plot.m。
English Description：
Sift + RANSAC is used to complete the feature extraction and matching of the two images, and the smaller image area is circled by a box in the other image. Run plot. M.