Python-opencv实现OTUS(属于自适应阈值分割法）

import cv2
import os
#OTUS阈值分割法
def OTUS(img_path,save_path):
    imgs_path = os.listdir(img_path)
    for r in imgs_path:
        img=os.path.join(img_path,r)
        img = cv2.imread(img)
        gray=cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)  #BGR图（cv2读取的是BGR,不是RGB）转为灰度图
        _,th = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)
        cv2.imwrite(save_path+r, th)