module 'cv2' has no attribute 'CV_LOAD_IMAGE_GRAYSCALE'

使用cv2.CV_LOAD_IMAGE_GRAYSCALE时报错：module ‘cv2’ has no attribute ‘CV_LOAD_IMAGE_GRAYSCALE’。Traceback (most recent call last): 
File “/Users/n1/Desktop/FaceDetection/face.py”, line 8, in 
gray = imread(fname, CV_LOAD_IMAGE_GRAYSCALE ) 
NameError: name ‘CV_LOAD_IMAGE_GRAYSCALE’ is not defined原来是 CV_LOAD_IMAGE_GRAYSCALE is from the outdated [and now removed] cv api


In OpenCV 3.1 for C++ you have to use cv::ImreadModes::IMREAD_GRAYSCALE which is located on
解决方法


应该用：


cv2.IMREAD_GRAYSCALE


参考：https://stackoverflow.com/questions/16696251/unable-to-use-flags-in-opencv-python