如何使用OpenCV去除此图像中的黑点？

import cv2
import numpy as np

image = cv2.imread('image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

_, binary = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)

kernel = np.ones((3, 3), np.uint8)
opening = cv2.morphologyEx(binary, cv2.MORPH_OPEN, kernel, iterations=2)

_, labels, stats, _ = cv2.connectedComponentsWithStats(opening, connectivity=8)

threshold_area = 100  # 设置阈值面积
for i in range(1, labels.max() + 1):
    if stats[i, cv2.CC_STAT_AREA] > threshold_area:
        opening[labels == i] = 255

cv2.imwrite('result.jpg', opening)
cv2.imshow('Result', opening)
cv2.waitKey(0)
cv2.destroyAllWindows()