Live cam

Configuration of a live cam.
Next, we want to configure a live cam connected to the Raspberry. With a cam, there can be multiple applications:
  • 24h live stream of whatever. Exposing a port in the local network should suffice.
  • Take a picture at a certain point of the day and save it. Then, timelapse can be done.
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source:
To use cv2:
  • Create virtual environment python3 -m venv venv
  • Activate it . venv/bin/activate
  • Install cv2 pip install opencv-python
  • Install extra libs required sudo apt-get install libatlas-base-dev
  • Run following script
import cv2
import time
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cap = cv2.VideoCapture(0)
ret, frame = cap.read()
​
def takePicture():
(grabbed, frame) = cap.read()
showimg = frame
# cv2.imshow('img1', showimg) # display the captured image
cv2.waitKey(2000)
#time.sleep(1) # Wait 300 miliseconds
image = 'test-image.png'
cv2.imwrite(image, frame)
cap.release()
return image
​
print(takePicture())
Play with waitKey(*) to let some seconds to focus light. Also, adjust cam.
Last modified 2yr ago