前言

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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)
 - cv2.putText(frame, name, (left + 6, bottom - 6), font, 1.0, (255, 255, 255), 1)
 - cv2.imshow('Video', frame)
 - if cv2.waitKey(1) & 0xFF == ord('q'):
 - break
 - video_capture.release()
 - cv2.destroyAllWindows()
 
其中my.jpg需要你自己拍摄上传,运行可以发现在你脸上会出现Admin的框框,我去网上找了张图片类似这样子
识别功能已经完成了接下来就是语音识别和语音合成,这需要使用到百度AI来实现了,去登录百度AI的官网到控制台选择左边的语音技术,然后点击面板的创建应用按钮,来到创建应用界面
打造电脑版人脸屏幕解锁神器
创建后会得到AppID、API Key、Secret Key记下来,然后开始写语音合成的代码。安装百度AI提供的依赖包
- pip install baidu-aip -i https://pypi.tuna.tsinghua.edu.cn/simple
 - pip install playsound -i https://pypi.tuna.tsinghua.edu.cn/simple
 
然后是简单的语音播放代码,运行下面代码可以听到萌妹子的声音
- import sys
 - from aip import AipSpeech
 - from playsound import playsound
 - APP_ID = ''
 - API_KEY = ''
 - SECRET_KEY = ''
 - client = AipSpeech(APP_ID, API_KEY, SECRET_KEY)
 - result = client.synthesis('你好吖', 'zh', 1, {'vol': 5, 'per': 4, 'spd': 5, })
 - if not isinstance(result, dict):
 - with open('auido.mp3', 'wb') as file:
 - file.write(result)
 - filepath = eval(repr(sys.path[0]).replace('\\', '/')) + '//auido.mp3'
 - playsound(filepath)
 
有了上面的代码就完成了检测是否在电脑前(人脸识别)以及电脑念出暗语(语音合成)然后我们还需要回答暗号给电脑,所以还需要完成语音识别。
- import wave
 - import pyaudio
 - from aip import AipSpeech
 - APP_ID = ''
 - API_KEY = ''
 - SECRET_KEY = ''
 - client = AipSpeech(APP_ID, API_KEY, SECRET_KEY)
 - CHUNK = 1024
 - FORMAT = pyaudio.paInt16
 - CHANNELS = 1
 - RATE = 8000
 - RECORD_SECONDS = 3
 - WAVE_OUTPUT_FILENAME = "output.wav"
 - p = pyaudio.PyAudio()
 - stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)
 - print("* recording")
 - frames = []
 - for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
 - data = stream.read(CHUNK)
 - frames.append(data)
 - print("* done recording")
 - stream.stop_stream()
 - stream.close()
 - p.terminate()
 - wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
 - wf.setnchannels(CHANNELS)
 - wf.setsampwidth(p.get_sample_size(FORMAT))
 - wf.setframerate(RATE)
 - wf.writeframes(b''.join(frames))
 - def get_file_content():
 - with open(WAVE_OUTPUT_FILENAME, 'rb') as fp:
 - return fp.read()
 - result = client.asr(get_file_content(), 'wav', 8000, {'dev_pid': 1537, })
 - print(result)
 
运行此代码之前需要安装pyaudio依赖包,由于在win10系统上安装会报错所以可以通过如下方式安装。到这个链接 https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyaudio 去下载对应的安装包然后安装即可。
打造电脑版人脸屏幕解锁神器
运行后我说了你好,可以看到识别出来了。那么我们的小模块功能就都做好了接下来就是如何去整合它们。可以发现在人脸识别代码中if matches[best_match_index]这句判断代码就是判断是否为电脑主人,所以我们把这个判断语句当作main函数的入口。
- if matches[best_match_index]:
 - # 在这里写识别到之后的功能
 - name = known_face_names[best_match_index]
 
那么识别到后我们应该让电脑发出询问暗号,也就是语音合成代码,然我们将它封装成一个函数,顺便重构下人脸识别的代码。
- import cv2
 - import time
 - import numpy as np
 - import face_recognition
 - 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
 - def speak(content):
 - import sys
 - from aip import AipSpeech
 - from playsound import playsound
 - APP_ID = ''
 - API_KEY = ''
 - SECRET_KEY = ''
 - client = AipSpeech(APP_ID, API_KEY, SECRET_KEY)
 - result = client.synthesis(content, 'zh', 1, {'vol': 5, 'per': 0, 'spd': 5, })
 - if not isinstance(result, dict):
 - with open('auido.mp3', 'wb') as file:
 - file.write(result)
 - filepath = eval(repr(sys.path[0]).replace('\\', '/')) + '//auido.mp3'
 - playsound(filepath)
 - try:
 - 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]:
 - speak("识别到人脸,开始询问暗号,请回答接下来我说的问题")
 - time.sleep(1)
 - speak("天王盖地虎")
 - error = 1 / 0
 - 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)
 - cv2.putText(frame, name, (left + 6, bottom - 6), font, 1.0, (255, 255, 255), 1)
 - cv2.imshow('Video', frame)
 - if cv2.waitKey(1) & 0xFF == ord('q'):
 - break
 - except Exception as e:
 - print(e)
 - finally:
 - video_capture.release()
 - cv2.destroyAllWindows()
 
这里有一点需要注意,由于playsound播放音乐的时候会一直占用这个资源,所以播放下一段音乐的时候会报错,解决方法是修改~\Python37\Lib\site-packages下的playsound.py文件,找到如下代码
打造电脑版人脸屏幕解锁神器
在sleep函数下面添加winCommand('close', alias)这句代码,保存下就可以了。运行发现可以正常将两句话都说出来。那么说出来之后就要去监听了,我们还要打包一个函数。
- def record():
 - import wave
 - import json
 - import pyaudio
 - from aip import AipSpeech
 - APP_ID = ''
 - API_KEY = ''
 - SECRET_KEY = ''
 - client = AipSpeech(APP_ID, API_KEY, SECRET_KEY)
 - CHUNK = 1024
 - FORMAT = pyaudio.paInt16
 - CHANNELS = 1
 - RATE = 8000
 - RECORD_SECONDS = 3
 - WAVE_OUTPUT_FILENAME = "output.wav"
 - p = pyaudio.PyAudio()
 - stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)
 - print("* recording")
 - frames = []
 - for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
 - data = stream.read(CHUNK)
 - frames.append(data)
 - print("* done recording")
 - stream.stop_stream()
 - stream.close()
 - p.terminate()
 - wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
 - wf.setnchannels(CHANNELS)
 - wf.setsampwidth(p.get_sample_size(FORMAT))
 - wf.setframerate(RATE)
 - wf.writeframes(b''.join(frames))
 - def get_file_content():
 - with open(WAVE_OUTPUT_FILENAME, 'rb') as fp:
 - return fp.read()
 - result = client.asr(get_file_content(), 'wav', 8000, {'dev_pid': 1537, })
 - result = json.loads(str(result).replace("'", '"'))
 - return result["result"][0]
 
将识别到人脸后的代码修改成如下
- if matches[best_match_index]:
 - speak("识别到人脸,开始询问暗号,请回答接下来我说的问题")
 - time.sleep(1)
 - speak("天王盖地虎")
 - flag = False
 - for times in range(0, 3):
 - content = record()
 - if "小鸡炖蘑菇" in content:
 - speak("暗号通过")
 - flag = True
 - break
 - else:
 - speak("暗号不通过,再试一次")
 - if flag:
 - print("解锁")
 - else:
 - print("发送邮件并将坏人人脸图片上传!")
 - error = 1 / 0
 - name = known_face_names[best_match_index]
 
运行看看效果,回答电脑小鸡炖蘑菇,电脑回答暗号通过。这样功能就基本上完成了。
打造电脑版人脸屏幕解锁神器
结语
至于发送邮件的功能和锁屏解锁的功能我就不一一去实现了,我想这应该难不倒在座的各位吧。锁屏功能可以HOOK让键盘时间无效化,然后用窗口再覆盖整个桌面即可,至于邮箱发送网上文章很多的。
                网站标题:再也不怕别人动电脑了!用Python实时监控
                
                文章转载:http://www.csdahua.cn/qtweb/news18/64318.html
            
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