.NET + OpenCV & Python + OpenCV

AttributeError: 'module' object has no attribute 'SIFT'

import cv2import numpy as np#import pdb#pdb.set_trace()#turn on the pdb prompt#test cv2 and numpy packageprint cv2.__version__a = np.arange(10)print(a)#read imageimg = cv2.imread('D:\privacy\picture\little girl.jpg',cv2.IMREAD_COLOR)gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)cv2.imshow('tt',img);#basic accessingb,g,r = img[0,0];#blue,green,redprint b,g,rrows,columns,channels = img.shapeprint rows,columns,channelsprint img.size#channels split and mergeb,g,r = cv2.split(img)img = cv2.merge([b,g,r])#SIFTdetector = cv2.SIFT()keypoints = detector.detect(gray,None)img = cv2.drawKeypoints(gray,keypoints)#img = cv2.drawKeypoints(gray,keypoints,flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS)cv2.imshow('test',img);cv2.waitKey(0)cv2.destroyAllWindows()