python opencv 带中文的图片读取效率测试

    import datetime
    import cv2  
    import numpy as np
    file = 'C:/thumbnails-83.jpeg'
    #file = r'c:/thumbnails-83 - 副本.jpeg'
    time1=datetime.datetime.now()
    img = cv2.imdecode(np.fromfile(file, dtype=np.uint8), -1)
    #cv2.imshow('test',img) 
    print(datetime.datetime.now()-time1)
    time1=datetime.datetime.now()
    img = cv2.imread(file)  
    #cv2.imshow('test',img)  

    print(datetime.datetime.now()-time1)

0:00:00.006001
0:00:00.007000

基本一样，放心使用。