python中PIL.Image和OpenCV圖像格式相互轉換

PIL.Image轉換成OpenCV格式

import cv2
from PIL import Image
import numpy
 
image = Image.open("plane.jpg")
image.show()
img = cv2.cvtColor(numpy.asarray(image),cv2.COLOR_RGB2BGR)
cv2.imshow("OpenCV",img)
cv2.waitKey()

OpenCV轉換成PIL.Image格式

import cv2
from PIL import Image
import numpy
 
img = cv2.imread("plane.jpg")
cv2.imshow("OpenCV",img)
image = Image.fromarray(cv2.cvtColor(img,cv2.COLOR_BGR2RGB))
image.show()
cv2.waitKey()

判斷圖像數據是否是OpenCV格式

 isinstance(img, np.ndarray) 

判斷OpenCV版本是2還是3或4

import cv2
import imutils   #若沒有包使用 pip install imutils 安裝
 
if imutils.is_cv2():
    print("OpenCV2")
 
if imutils.is_cv3():
    print("OpenCV3")
 
if imutils.is_cv4():
    print("OpenCV4")