前言

最近突然有个奇妙的想法，就是当我对着电脑屏幕的时候，电脑会先识别屏幕上的人脸是否是本人，如果识别是本人的话需要回答电脑说的暗语，答对了才会解锁并且有三次机会。如果都没答对就会发送邮件给我，通知有人在动我的电脑并上传该人头像。

过程

环境是win10代码我使用的是python3所以在开始之前需要安装一些依赖包，请按顺序安装否者会报错

pip install cmake -i https://pypi.tuna.tsinghua.edu.cn/simple

pip install dlib -i https://pypi.tuna.tsinghua.edu.cn/simple

pip install face_recognition -i https://pypi.tuna.tsinghua.edu.cn/simple

pip install opencv-python -i https://pypi.tuna.tsinghua.edu.cn/simple

接下来是构建识别人脸以及对比人脸的代码

import face_recognition

import cv2

import numpy as np

video_capture = cv2.VideoCapture(0)

my_image = face_recognition.load_image_file("my.jpg")

my_face_encoding = face_recognition.face_encodings(my_image)[0]

known_face_encodings = [

my_face_encoding

]

known_face_names = [

"Admin"

]

face_names = []

face_locations = []

face_encodings = []

process_this_frame = True

while True:

ret, frame = video_capture.read()

small_frame = cv2.resize(frame, (0, 0), fx=0.25, fy=0.25)

rgb_small_frame = small_frame[:, :, ::-1]

if process_this_frame:

face_locations = face_recognition.face_locations(rgb_small_frame)

face_encodings = face_recognition.face_encodings(rgb_small_frame, face_locations)

face_names = []

for face_encoding in face_encodings:

matches = face_recognition.compare_faces(known_face_encodings, face_encoding)

name = "Unknown"

face_distances = face_recognition.face_distance(known_face_encodings, face_encoding)

best_match_index = np.argmin(face_distances)

if matches[best_match_index]:

name = known_face_names[best_match_index]

face_names.append(name)

process_this_frame = not process_this_frame

for (top, right, bottom, left), name in zip(face_locations, face_names):

top *= 4

left *= 4

right *= 4

bottom *= 4

font = cv2.FONT_HERSHEY_DUPLEX

cv2.rectangle(frame, (left, top), (right, bottom), (0, 0, 255), 2)

cv2.rectangle(frame, (left, bottom - 35), (right, bottom), (0, 0, 255), cv2.FILLED)