Opencv Python维护零像素

Question

I have an image I am trying to run a classification on. This is the image opened in Paint 2:

And this is the image loaded into opencv when I do imshow.

My Question is how can I maintain the null area of the image where there are no pixel values when I load the image into python and opencv. It is currently being received as white (255,255,255)?

Code:

img = cv2.imread('/Volumes/EXTERNAL/ClassifierImageSets/Origional_2.png',cv2.IMREAD_UNCHANGED)
    imgS = cv2.resize(img,(0,0), fx=0.5, fy=0.5)
    cv2.imshow("result",imgS)
    while (1):
        k = cv2.waitKey(0)
        if k==27:
            cv2.destroyAllWindows()
            break

Answer 1

Try to load the image using

img = cv2.imread('path_to_image',cv2.IMREAD_UNCHANGED)

The cv2.IMREAD_UNCHANGED parameter should load the image as it is with default alpha value