Hi !
Today, during my [Let’s setup a Raspberry Pi and a reTerminal as an Azure IoT ☁ device] session, one of the questions was about what cool scenarios we can run once we have a Raspberry Pi as an Azure IoT Edge device.
Besides the use of Cognitive Services (only for x64), a cool and fast idea can be to convert your RPi to a RTSP Cam device. We only need to connect a USB WebCam to the Raspberry Pi.
Once the USB Camera is connected, we need to add the following Edge Module to the device configuration
More information: RTSP Webcam
The module runs as a IoT Edge container named RtspWebCam. While running the container image, one must map the USB camera on the host device to the container by using the following module createOptions parameters: PathOnHost=/dev/video0, PathInContainer=/dev/video0.
Once we add the module, we can see the module running in the device:
And, we will have access to a RTSP Camera. And we can run a sample python app to have the view from the camera.
Sample Code
# Copyright (c) 2022 | |
# Author : Bruno Capuano | |
# Create Time : 2022 July | |
# Change Log : | |
# - Open the camera feed from a RTSP address | |
# | |
# The MIT License (MIT) | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining a copy | |
# of this software and associated documentation files (the "Software"), to deal | |
# in the Software without restriction, including without limitation the rights | |
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
# copies of the Software, and to permit persons to whom the Software is | |
# furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included in | |
# all copies or substantial portions of the Software. | |
# | |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
# THE SOFTWARE. | |
import time | |
import cv2 | |
# Camera Settings | |
camera_Width = 640 | |
camera_Heigth = 480 | |
frameSize = (camera_Width, camera_Heigth) | |
video_capture = cv2.VideoCapture("rtsp://rpiDev12:8554/stream1") | |
time.sleep(1.0) | |
while True: | |
ret, frameOrig = video_capture.read() | |
frame = cv2.resize(frameOrig, frameSize) | |
cv2.imshow('@elbruno - Azure IoT Edge Camera', frame) | |
# key controller | |
key = cv2.waitKey(1) & 0xFF | |
if key == ord("q"): | |
break | |
video_capture.release() | |
cv2.destroyAllWindows() |
Happy coding!
Greetings
El Bruno
More posts in my blog ElBruno.com.
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