Raspberry pie 4B installs yolov5 to achieve real-time target detection

Preparation before start

You need to prepare

• A camera
  Here is the official raspberry pie camera v2
• Be able to access the Internet scientifically

System

I use the official burning tool Raspberry Pi Imager, The selected system is Raspberry Pi OS(Legacy)

One is based on Debian Buster Of Raspberry Pi OS Legacy version of （Legacy）

adopt PuTTY Tool connected to raspberry pie

Log in with the default password for raspberry pie

 account number  pi
 password  raspberry

preparation

Update raspberry pie

Just confirm everything you encounter , To ensure smooth network

sudo apt-get update
sudo apt-get upgrade

take python Set to default python3

pi os After installation, there are two by default python edition , The default is python2.7. To prevent errors caused by too low version , I will uninstall directly here python2.7.
uninstall python2.7

sudo apt-get autoremove python2.7

New links will default python Change it to python3

sudo ln -s /usr/bin/python3.5 /usr/bin/python

Resolve delete python2 after pip Problems that cannot be used

Run the following commands in sequence

which pip
pip
type pip
hash -r

install Pytorch

Installation dependency

sudo apt-get install libopenblas-dev libblas-dev m4 cmake cython python3-dev python3-yaml python3-setuptools python3-wheel python3-pillow python3-numpy

Use WinSCP Copy the installation package to raspberry pie

Download... From here Installation package download link

install torch and torchvision

Enter at the command line

cd /home/pi
pip3 install torch-1.8.0a0+56b43f4-cp37-cp37m-linux_armv7l.whl
pip3 install torchvision-0.9.0a0+8fb5838-cp37-cp37m-linux_armv7l.whl

This is the screen of inputting instructions after installation

install Opencv

sudo apt-get install python3-opencv

This is the screen of inputting instructions after installation

Check Opencv Can it be used normally

python
import cv2

install Yolov5

download Yolov5

git clone https://github.com/ultralytics/yolov5

because requirements.txt Inside opencv-python,torch,torchvision There will be problems during installation , So let's put the... In the dependent file first opencv-python,torch,torchvision Comment out （torch and torchvision The front is installed, so it doesn't matter ）

cd /home/pi/yolov5
sudo nano requirements.txt

Add... To the front “# ”

write in
Ctrl + O
Enter
sign out
Ctrl + X
Enter
Re install dependency , add –default-timeout=1000 Parameters prevent timeout

cd /home/pi/yolov5
pip3 install --default-timeout=1000 -r requirements.txt

Don't worry about him if you report a mistake

A test run

cd /home/pi/yolov5
python3 detect.py

Picture of successful operation

install Camera v2

Zhihu link

stay yolov5 Use the camera to detect the target

open VNC Function connection raspberry pie

sudo raspi-config

successively Enter determine




Modify resolution


Direct change to maximum


restart

Use VNC viewer Connect the raspberry pie （ Self installation is required VNC viewer）


Just close all the pages

cd /home/pi/yolov5
python3 detect.py --source 0

Successful detection

Reference material

https://baijiahao.baidu.com/s?id=1718556879296833057
https://blog.csdn.net/m0_46410698/article/details/120390460
https://blog.csdn.net/weixin_39965127/article/details/102686314
https://www.jianshu.com/p/7a954aa5b5c2
https://github.com/nmilosev/pytorch-arm-builds
https://blog.csdn.net/Eric_Fisher/article/details/108861727
https://blog.csdn.net/Crazysai2012/article/details/108872532
https://blog.csdn.net/weixin_43878078/article/details/103893426
https://blog.csdn.net/qq_39712148/article/details/107148832
https://blog.csdn.net/m0_46410698/article/details/120390460
https://blog.csdn.net/weixin_39965127/article/details/102686314
https://stackoverflow.com/questions/43298872/how-to-solve-readtimeouterror-httpsconnectionpoolhost-pypi-python-org-port
https://developer.aliyun.com/article/619208
https://blog.csdn.net/qq_15192373/article/details/104597622
https://newbedev.com/from-cv2-import-importerror-libcblas-so-3-cannot-open-shared-object-file-no-such-file-or-directory-code-example
https://blog.csdn.net/CAU_Ayao/article/details/83990246
https://stackoverflow.com/questions/53347759/importerror-libcblas-so-3-cannot-open-shared-object-file-no-such-file-or-dire
https://blog.csdn.net/shenqiongniujiahui/article/details/50494172
https://blog.csdn.net/armkits/article/details/103200433
https://blog.csdn.net/huayucong/article/details/51706252
https://blog.csdn.net/dwj1979/article/details/105622390/
https://www.cxyzjd.com/article/qq_22945165/113541514
https://blog.csdn.net/weixin_51110161/article/details/114681830