Output Video From Opencv C++ As Dev Video1

 
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A ROS package for publishing image topics from a rgb camera.
This package uses a simple polling way with OpenCV tools to capture images from /dev/videoX device and publish them to ROS. We have tested this with Raspbery Pi camera and Orbbec Astra pro.

Launch files

The document describes the so-called OpenCV 2.x API, which is essentially a C API, as opposed to the C-based OpenCV 1.x API (C API is deprecated and not tested with 'C' compiler since OpenCV 2.4 releases) OpenCV has a modular structure, which means that the package includes several shared or static libraries. The following modules are available.

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  • camera_polling.launchLaunch the polling node to capture images.

Parameters

  • fps
    Frame rate (f/s).
  • camera_index
    The device number of /dev/videoX. If you plug in Astra pro, there will be 2 video devices displayed, and the 2nd(/dev/video1) one is rgb device.
  • view
    Whether you want to view the image stream using image_view tool.
  • save
    Whether you want to save the image stream using rosbag tool.
  • upside_down
    If your camera is set upside down, setting this to true will flip the images vertically.

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Examples

Video

Output Video From Opencv C As Dev Video1 2

roslaunch camera_driver_with_opencv camera_polling.launch camera_index:=1 fps:=30 view:=false save:=true upside_down:=true