Issue: Running OpenCV Live View Window Remotely from Raspberry Pi to Windows 10 Development PC
In this article, we will discuss how to run an OpenCV live view window remotely from a Raspberry Pi 4B (RPi) to a Windows 10 Development PC (WinPC) connected via Ethernet LAN. We will cover key concepts, provide subtitles, paragraphs, and code blocks as necessary. The content inside the code blocks will be properly formatted according to the programming language, including indentation and tabulation when needed.
Setting up the Raspberry Pi and Windows 10 Development PC
To get started, make sure that your Raspberry Pi 4B and Windows 10 Development PC are connected via Ethernet LAN. The WinPC should also have internet access via a WLAN USB adapter or other means, while the RPi should not have a monitor or keyboard connected to it. This is because we will be accessing the RPi remotely from the WinPC using SSH (Secure Shell).
Installing OpenCV and Other Dependencies
To install OpenCV on the RPi, you can use the following command:
sudo apt-get install libopencv-devYou will also need to install other dependencies, such as Python and NumPy. You can install Python using the following command:
sudo apt-get install python3And you can install NumPy using the following command:
sudo apt-get install python3-numpyRunning OpenCV on the Raspberry Pi
Once you have installed OpenCV and the necessary dependencies, you can create a Python script that will use the RPi's camera to capture images and display them in a live view window. Here is an example Python script:
import cv2
# create a VideoCapture object
cap = cv2.VideoCapture(0)
while True:
# read the frame from the camera
ret, frame = cap.read()
# display the frame in a window
cv2.imshow('OpenCV Live View', frame)
# wait for a key press and exit if the 'q' key is pressed
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# release the VideoCapture object and destroy all windows
cap.release()
cv2.destroyAllWindows()
This script will create a VideoCapture object that captures frames from the RPi's camera. It will then display each frame in a window called 'OpenCV Live View'. The loop will continue until the 'q' key is pressed, at which point it will release the VideoCapture object and destroy all windows.
Accessing the Raspberry Pi Remotely from the Windows 10 Development PC
To access the RPi remotely from the WinPC, you can use SSH. First, you need to find the IP address of the RPi. You can do this by running the following command on the RPi:
hostname -IThis will display the RPi's IP address. Then, on the WinPC, you can open a command prompt and use the following command to connect to the RPi via SSH:
ssh pi@Replace
Running the OpenCV Script Remotely on the Raspberry Pi from the Windows 10 Development PC
Now that you are connected to the RPi via SSH from the WinPC, you can run the OpenCV script on the RPi. Here is an example command:
python3 /path/to/script.pyReplace /path/to/script.py with the actual path to your OpenCV script on the RPi. This will run the script