3种类型，默认是 numpy.array

numpy.array

PIL.Image 

str file path.

互相转换

# 从路径到 numpy.ndarray
import cv2
image_mask = cv2.imread(imagePath)
print(type(image_mask))

# 从路径到 PIL.IMAGE
from PIL import Image
image_mask=Image.open(imagePath)
print(type(image_mask))


# 转换 从 PIL.IMAGE 到 numpy.ndarray
np_mask = np.array(image_mask)
# 转换 从 numpy.ndarray 到 PIL.IMAGE
image_mask = Image.fromarray(np_mask)



I = numpy.asarray(PIL.Image.open('test.jpg'))

im = PIL.Image.fromarray(numpy.uint8(I))

参考：

https://medium.com/@HuggyMonkey/how-to-gradio-components-image-bb5e6a5b97d6