opencv_tutorials/python/code_091 at master · JimmyHHua/opencv_tutorials · GitHub

Name		Name	Last commit message	Last commit date
parent directory ..
README.md		README.md
face.jpg		face.jpg
opencv_091.py		opencv_091.py
people.jpg		people.jpg

README.md

More Detail, please check the blog of zhihu as below

✈️ ✈️ ✈️ 人脸检测-Haar级联