how can i get the size of cv2.imread(image_path)

你可以使用以下代码获取cv2.imread(image_path)返回的图像大小：

import cv2

image = cv2.imread(image_path)
height, width, channels = image.shape

print("Image height:", height)
print("Image width:", width)
print("Number of color channels:", channels)

注意，cv2.imread()返回的图像大小是以像素为单位的。如果图像不存在或路径不正确，cv2.imread()将返回NoneType。