All Questions
Tagged with opencv ros-melodic
13 questions
0
votes
0
answers
15
views
ROS Melodic ORB SLAM 2 Map point vector is empty
I am trying to run ORB SLAM 2 with frames being published of a video I need to map however all parameters I have tried have lead to no features being detected even with some aggressive parameters as ...
- 101
0
votes
2
answers
61
views
upgrade opencv version in melodic
Hello,
i want to upgrade opencv version to over 3.4 in Melodic.
Melodic installs opencv 3.2 originally,
so I tried to uninstall opencv 3.2, and re-install opencv 3.4
But some packages which are ...
danekim
0
votes
1
answer
49
views
What is the exact format and size of Image() object?
I cannot figure out what is the exact format of the sensor_msg Image() file. When I issue the command:
rostopic echo /camera/image_raw
I get a massive output ...
Tejas Rao
0
votes
1
answer
133
views
Find intrisic camera matrix from gazebo model
Hello,
I made a my camera model in gazebo and I want to extract the intrinsic matrix to use Opencv matrix.
Here is my model:
...
xavier12358
0
votes
1
answer
15
views
openCV transform datatypes to ROS msg tf/goal
Hi,
Iam looking for the best practice to make a openCV transform (getAffineTransform() ) into a pathplanner goal message (angle, translation). I dont really understand all the different datatypes used....
Dragonslayer
0
votes
1
answer
7
views
Problems building melodic compressed_depth_image_transport on 18.04
Following these instructions to do a source build of melodic desktop full (I want to build it with thread sanitizer because of something I'm debugging): http://wiki.ros.org/melodic/Installation/Source
...
tyler-picknik
0
votes
1
answer
28
views
0
votes
1
answer
52
views
catkin_make opencv version conflict
Hello everyone ;
When I write catkin_make it gives such a warning.
...
jahim44229
0
votes
1
answer
15
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Is there a way to publish a video file so it can be displayed with a camera display in RViz? (solved)
I have recorded videos I want to display in RViz with a camera display so that I can overlay them with my other plugins.
Is there a way to do that?
I tried with the video_stream_opencv plugin already ...
Fetzle
0
votes
1
answer
3
views
rosrun can't open my video (ROS OpenCV)
Hi guys,
I'm trying to stream some video file (.mp4).
I wrote a node:
...
Jovan
0
votes
1
answer
4
views
Not able to publish image to std_msg/Image
I am trying to run a publisher code that publishes an Image to a topic. But, whenever I run the code, I get an error. The code I have written is below -
...
TristanNoctis
0
votes
1
answer
3
views
Building OpenCV from source for ROS
I'm in need of a newer version or OpenCV than is provided by my Ubuntu repo. Is there a version or fork of OpenCV that contains a package.xml so it can be compiled as part of a ROS workspace? Seems ...
mogumbo
0
votes
1
answer
18
views
ROS Melodic OpenCV xfeatures2d
On ROS Melodic ros-melodic-opencv3 doesn't exist anymore as e.g. on ROS Kinetic. Instead it is recommended to install libopencv-dev http://wiki.ros.org/melodic/Migration#opencv , however, this package ...
sam_123