CV2:有没有一个函数可以输出多边形中白点的数量？

import cv2

# 读取图像并转换为灰度图像
image = cv2.imread('image.png')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

# 二值化处理
_, binary = cv2.threshold(gray, 127, 255, cv2.THRESH_BINARY)

# 查找轮廓
contours, _ = cv2.findContours(binary, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

# 统计包含白点的轮廓数量
white_point_count = 0
for contour in contours:
    area = cv2.contourArea(contour)
    if area > 0:
        white_point_count += 1

print("多边形中白点的数量：", white_point_count)