HYTOS

import numpy as np

import cv2, os

rootPath = 'C:\id2 project\SECL PJT_20190902_ori\image'

rootList = os.listdir(rootPath)

for folder in rootList:

    path = os.path.join(rootPath, folder)

    imgList = os.listdir(path)

    for imgPath in imgList:

        fullPath = os.path.join(path, imgPath)

        img = cv2.imread(fullPath, cv2.IMREAD_GRAYSCALE)

        kernel = np.ones((3,3), np.uint8)

        #e = cv2.erode(img, kernel,iterations=1)

        #d = cv2.dilate(img, kernel,iterations=1)

        height,width = img.shape[0], img.shape[1]

        #cv2.imshow('e',e)

        #cv2.imshow('d',d)

        new = np.ones((height + 10,width + 10), np.uint8) * 255

        new[5:5+height, 5:5+width] = img

        e = cv2.erode(new, kernel,iterations=1)

        #cv2.imshow('e',e)

        cv2.imwrite(fullPath, e)

        #cv2.imshow('n',new)

        #cv2.waitKey(0)

        #cv2.destroyAllWindows()