- ROS Package
- Provides the launcher to the stereo webcam system and a calibration program
The packages provides a launcher that starts the webcams. The default mode is the stereo mode with a 320×240 resolution for each camera. The The launcher also starts the stereo_image_proc ROS node in order to make the stereo processing.
The package also includes a simple calibration program.
Left webcam images
Right webcam images
Number of rectangles in the horizontal direction of the calibration pattern
Number of rectangles in the vertical direction of the calibration pattern
Number of images to take in each step. The steps are left webcam calibration, right webcam calibration and stereo calibration
The dimension in meters of the calibration pattern rectangles
- If you experience random crashes of the camera calibration application, it will help to rebuild the OpenCv library and replace the files in the ROS distribution directory (tested on Ubuntu 12.04 32-bit). See here for details: http://answers.ros.org/question/57240/camera-calibration-crashes/
- If the stereo_node fails to start (dmesg contains uvcvideo: Failed to submit URB 0 (-28)), this trick helps (setting the quirks parameter of the uvcvideo kernel module to 128): http://renoirsrants.blogspot.cz/2011/07/multiple-webcams-on-zoneminder.html