import cv2

img = cv2.imread("feature.jpg")

img = cv2.resize(img,(136 * 3,76 * 3))

cv2.imshow("original",img)

gray = cv2.cvtColor(img,cv2.COLOR_RGB2GRAY)

#使用SIFT

sift = cv2.xfeatures2d.SIFT_create()

keypoints, descriptor = sift.detectAndCompute(gray,None)

cv2.drawKeypoints(image = img,

                  outImage = img,

                  keypoints = keypoints,

                  flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS,

                  color = (51,163,236))

cv2.imshow("SIFT",img)

#使用SURF

img = cv2.imread("feature.jpg")

img = cv2.resize(img,(136 * 3,76 * 3))

surf = cv2.xfeatures2d.SURF_create()

keypoints, descriptor = surf.detectAndCompute(gray,None)

cv2.drawKeypoints(image = img,

                  outImage = img,

                  keypoints = keypoints,

                  flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS,

                  color = (51,163,236))

cv2.imshow("SURF",img)

img = cv2.imread("feature.jpg")

img = cv2.resize(img,(136 * 3,76 * 3))

cv2.waitKey(0)

cv2.destroyAllWindows()