用Python在CSV文件中写入Sift关键点

import csv
import cv2
import numpy as np

image = cv2.imread('image.jpg', 0)
sift = cv2.xfeatures2d.SIFT_create()
keypoints, descriptors = sift.detectAndCompute(image, None)

with open('keypoints.csv', 'w', newline='') as csvfile:
    writer = csv.writer(csvfile)
    writer.writerow(['x', 'y', 'size', 'angle', 'response', 'octave', 'class_id'])
    for kp in keypoints:
        x = kp.pt[0]
        y = kp.pt[1]
        size = kp.size
        angle = kp.angle
        response = kp.response
        octave = kp.octave
        class_id = kp.class_id
        writer.writerow([x, y, size, angle, response, octave, class_id])