在Ubuntu中实现人脸识别登录的完整步骤

(编辑：jimmy 日期: 2026/10/15 浏览：3 次 )

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

sudo howdy add

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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