python opencv转换bytesio

opencv bytesio

转不转bytesio，opencv都能读取文字成图片：

str_encode opencv也能解析

  

   

    

     

    
    

     

      def a():
     
    
   

    

     

    
    

     

       path='d:/1.jpg'
     
    
   

    

     

    
    

     
 for i in range(10):
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       img=cv2.imread(path)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       start=time.time()
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       img_encode = cv2.imencode('.jpg', img)  # 可以看出第二个元素是矩阵 print(img_encode)
     
    
   

    

     

    
    

     

       str_encode = img_encode[1].tostring()
     
    
   

    

     

    
    

     

       buf_str = BytesIO(str_encode).getvalue()
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       encode_t=time.time()-start
     
    
   

    

     

    
    

     

       nparr = np.fromstring(buf_str, np.uint8)
     
    
   

    

     

    
    

     

       img_decode = cv2.imdecode(nparr, 1)
     
    
   

    

     

    
    

     

       print('time', encode_t, time.time() - start)
     
    
   

    

     

    
    

     
 # cv2.imshow('',img_decode)
     
    
   

    

     

    
    

     
 # cv2.waitKey(1)
     
    
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/88118963