def draw_MAR(path, flipped=False):
    img = io.imread(path, as_grey=True)
    _, img = cv2.threshold(img, 127, 255, 0)
    im2, contours, hierarchy = cv2.findContours(img, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)
    cont_len = [len(x) for x in contours]
    index = cont_len.index(max(cont_len))
    cnt = contours[index]
    rect = cv2.minAreaRect(cnt)
    box = cv2.boxPoints(rect)
    box = np.int0(box)

    width = int(rect[1][0])
    height = int(rect[1][1])

    src_pts = box.astype("float32")
    dst_pts = np.array([[0, height - 1],
                        [0, 0],
                        [width - 1, 0],
                        [width - 1, height - 1]], dtype="float32")
    M = cv2.getPerspectiveTransform(src_pts, dst_pts)
    warped = cv2.warpPerspective(img, M, (width, height))
    img = warped
    # io.imsave("rotated_" + path, img)