utils.py 文件源码

def get_init_process_img(roi_img):
    """
    ?????????????????????????????????????
    :param roi_img: ndarray
    :return: ndarray
    """
    h = cv2.Sobel(roi_img, cv2.CV_32F, 0, 1, -1)
    v = cv2.Sobel(roi_img, cv2.CV_32F, 1, 0, -1)
    img = cv2.add(h, v)
    img = cv2.convertScaleAbs(img)
    img = cv2.GaussianBlur(img, (3, 3), 0)
    ret, img = cv2.threshold(img, 120, 255, cv2.THRESH_BINARY)
    kernel = np.ones((1, 1), np.uint8)
    img = cv2.erode(img, kernel, iterations=1)
    img = cv2.dilate(img, kernel, iterations=2)
    img = cv2.erode(img, kernel, iterations=1)
    img = cv2.dilate(img, kernel, iterations=2)
    img = auto_canny(img)
    return img