Search found 4 matches

by Rick Shen
19 Oct 2018, 19:09
Forum: General questions
Topic: Image upside down when streaming to ROS
Replies: 1
Views: 1243

Image upside down when streaming to ROS

Hi, I am using ROSInterface to streaming VisionSensor data to ROS. However, when I run the demo scene rosInterfaceTopicPublisherAndSubscriber.ttt from VREP official ROS tutorial , the image published to ros is upside down. I never change any code from the template. The passive vision sensor is havin...
by Rick Shen
16 Oct 2018, 23:07
Forum: General questions
Topic: Interface between Velodyne VPL16 and ROS
Replies: 5
Views: 1540

Re: Interface between Velodyne VPL16 and ROS

See also https://answers.ros.org/question/207071/how-to-fill-up-a-pointcloud-message-with-data-in-python/ This ROS answer is so helpful! Now I can properly set the data structure and I can see them in Rviz. I use PointCloud msg type since I think PointCloud2 may need some special conversion. A new ...
by Rick Shen
16 Oct 2018, 17:27
Forum: General questions
Topic: Interface between Velodyne VPL16 and ROS
Replies: 5
Views: 1540

Re: Interface between Velodyne VPL16 and ROS

rostopic echo /velodyne If yes, then it might be a problem of choosing the correct frame in RViz (try selecting the velodyneVPL frame). If in RViz you select the /map frame, but no tf frame linking /map to /velodyneVPL is broadcasted, RViz won't show you anything (it will show an error in the Point...
by Rick Shen
15 Oct 2018, 19:08
Forum: General questions
Topic: Interface between Velodyne VPL16 and ROS
Replies: 5
Views: 1540

Interface between Velodyne VPL16 and ROS

Hi, I am recently using Velodyne VPL 16 for a car simulation. I need to transmit the detected point cloud to ROS via the RosInterface. I am modifying the template code coming along with the Velodyne model. I try to use Rviz to visualize them but there is no point showing in the window even though Rv...