1、安装Howdy: howdy项目地址
sudo add-apt-repository ppa:boltgolt/howdy
sudo apt update
sudo apt install howdy
2、添加自己的face
报错：
Enter a label for this new model [Initial model] (max 24 characters): tiger
Camera path is not configured correctly, please edit the 'device_path' config value.
Exception ignored in: <bound method VideoCapture.__del__ of <recorders.video_capture.VideoCapture object at 0x7f6bc5be02b0>>
Traceback (most recent call last):
File "/lib/security/howdy/recorders/video_capture.py", line 55, in __del__
self.internal.release()
AttributeError: 'VideoCapture' object has no attribute 'internal'
解决方案:
$ sudo apt-get install v4l-utils
# 查看摄像头路径
$ v4l2-ctl --list-devices
USB 2.0 Camera: USB Camera (usb-0000:03:00.0-14):
/dev/video0
$ sudo howdy config
# 接下来更改config中的device_path = /dev/video0
$ sudo howdy add
Adding face model for the user tiger
Enter a label for this new model [Initial model] (max 24 characters): tiger
Please look straight into the camera
Scan complete
Added a new model to tiger
3、测试
打开一个terminal
$ sudo -i
Identified face as tiger
$ sudo howdy test
Opening a window with a test feed
Press ctrl+C in this terminal to quit
Click on the image to enable or disable slow mode
Closing window
4、屏幕锁屏后，enter进入输密码界面，程序就会识别出人，直接解锁。
5、其它命令
Usage:
howdy [-U user] [-y] command [argument]
| Command |
Description |
| add |
Add a new face model for an user |
| clear |
Remove all face models for an user |
| config |
Open the config file in your default editor |
| disable |
Disable or enable howdy |
| list |
List all saved face models for an user |
| remove |
Remove a specific model for an user |
| snapshot |
Take a snapshot of your camera input |
| test |
Test the camera and recognition methods |
| version |
Print the current version number |
总结
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