#-*-coding:utf-8-*-importsysimportcv2importnumpyasnp#加载数据input_file='table.jpg'#sys.argv[1]img=cv2.imread(input_file)img_gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)#提取关键点sift=cv2.xfeatures2d.SIFT_create()keypoi