PIL 转opencv

PIL.Image转换成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转换成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()
    
   
 

 

判断图像数据是否是OpenCV格式

isinstance(img, np.ndarray)

 

 

判断OpenCV版本是2还是3或4

 

   

    

   
   

    

     import cv2
    
   

   

    

   
   

    

     import imutils   
     #若没有包使用 pip install imutils 安装
    
   

   

    

   
   

    
 
    
   

   

    

   
   

    

     if imutils.is_cv2():
    
   

   

    

   
   

    

         print(
     "OpenCV2")
    
   

   

    

   
   

    
 
    
   

   

    

   
   

    

     if imutils.is_cv3():
    
   

   

    

   
   

    

         print(
     "OpenCV3")
    
   

   

    

   
   

    
 
    
   

   

    

   
   

    

     if imutils.is_cv4():
    
   

   

    

   
   

    

         print(
     "OpenCV4")