WebCam testing Rasbian UbuntuServer and ROS

March 24

Test camera USB Webcam

sudo apt-get-update && sudo apt full-upgrade -y

Check info webcam USB:

ls /dev/video*
lsusb

RPI About the Camera Modules info: https://www.raspberrypi.com/documentation/accessories/camera.html#libcamera-and-libcamera-apps

Taking Photos (Raspberry Pi Camera Modules)

libcamera-jpeg -o image.jpg

raspistill -o testshot.jpg

fswebcam (USB cameras)

sudo apt install fswebcam -y

testing:

fswebcam image.jpg

fswebcam --device /dev/video1 image.jpg

ffmpeg

sudo apt install ffmpeg -y
ffmpeg -f v4l2 -video_size 1280x720 -i /dev/video0 -frames 1 out.jpg

📝 Note: You can set the device to use for recordings with the fswebcam software with the --device flag. For example, to take an image with the second connected USB webcam using fswebcam:

📝 Note: Para revisar image usar WinSCP en windows / SCP commands on linux

Recording Video

To capture a 10 second video with your Raspberry Pi camera module

libcamera-vid -t 10000 -o video.h264

ffmpeg

sudo apt install ffmpeg -y

ffmpeg -f video4linux2 -framerate 60 -video_size 1920x1080 -input_format mjpeg -i /dev/video0 -f alsa -i hw:1 output.mp4

Testing from GUI Ubuntu

Application cheese

driver web cam

sudo apt-get update
sudo apt-get install webcam

Testing from Browser

https://es.webcamtests.com/

Install usb_cam ROS Package

https://github.com/carjavi/ROS-web-video-server

uso de la camara en Noetic ROS

ls /dev/video*

Conociendo la ruta del nodo del dispositivo de nuestra cámara (/dev/video2), ahora verificaremos los atributos USB de la cámara usando el comando:

libuvc_camera

usaremos el paquete libuvc_camera de ros.

sudo apt-get install ros-noetic-libuvc-camera

Después de eso, estamos listos para crear el paquete ROS

Video Streaming Using Python OpenCV/ UDP protocol/ Socket Programming

https://github.com/carjavi/video-streaming-python-openCV-UDP-socket

Webcam on ROS Node

https://github.com/carjavi/raspicam_node

Streaming WebCam Pi

https://github.com/carjavi/raspberry-pi-code/tree/main/streaming-webcam-pi

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