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: >

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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原文链接：https://www.cnblogs.com/TigerZhang/p/13199797.html