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ROS2: URL to camera_info yaml not being recognized

asked 2019-09-20 08:44:16 -0500

surfertas

265 ●2 ●16 ●17 http://surfertas.github.io/

updated 2019-09-20 08:50:41 -0500

Running ROS2 dashing Ubuntu 18.04 bionic on x86.

URL to camera info yaml file not being recognized. The url is being loaded via the launch file as a parameter.

I have declared the parameter before trying to use. I have confirmed that the intended url from the launch file is obtained.

See the following repo. Place camera_info.yaml in the /config directory. (example file can be found here.)

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answered 2019-10-10 11:35:34 -0500

mjcarroll

6414 ●68 ●78 ●100 http://mjcarroll.io/

Looking at your launch file, you need to either specify the camera_calibration_file with either a file:// prefix or in the package:// format. Without the prefix on the URI, the package will fail to parse it.

Example correction:

# Using file://
config_file = 'file://' + os.path.join(config_dir, 'camera_info.yaml')
# OR using package://
config_file = 'package://ros2_ipcamera/config/camera_info.yaml'

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@mjcarroll Thank you for this. I went with using 'file://'. Don't think I would have been able to figure this out without your input.

surfertas ( 2019-10-11 08:25:15 -0500 )edit

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Asked: 2019-09-20 08:44:16 -0500

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Last updated: Oct 10 '19

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ROS2: URL to camera_info yaml not being recognized