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I have ros indigo installed on my laptop (ubuntu-14.04), I want to run opencv code which require contrib modules. How can I install those modules with ros-indigo opencv 2.4?

Thanks in advance!

Hi, I am publishing twist.linear.x = 0.5 on cmd_vel topic within the callback function of /pose topic. Whenever pose in x direction of my bot is less than goal x component I publish the twist command. For the /pose callback I am using rosspin with a ros::rate of 0.5 hz (ie 1 time in 2 seconds). Does it mean that 0.5 m/s will be imparted to my bot until the next iteration of /pose callback continuously or it will impart 0.5 for an instant and my bot will be still and wait for next iteration? Thanks in advance!

Hi everyone, I want to calculate time interval between messages that are published on a topic. The topic is /aruco_poses and of type aruco_mapping/ArucoMarker. It has std_msgs/Header field with stamp containing sec and nsec. But I don't know how to access nsec field from the topic. Any idea? Thanks in advance!

time interval between messages published on a topic Hi everyone, I want to calculate time interval between messages that

I am also doing the same thing. I have 2 webcameras connected to my pc and later I want to mount them on a small rover w

Thank you so much!

Hi, I am trying to generate left and right images from 2 webcameras. The two images generated topics are then passed to stereo image proc package for disparity and point cloud generation. However for this the namespace of left and right images should be same. The launch file is https://drive.google.com/open?id=0B5T... . I want the images on topics like /camera/left/image_raw and /camera/right/image_raw however the topics now are /camera1/left/image_raw and /camera2/right/image_raw Thanks in advance!

Edit

@huanxiner, I got an error

roslaunch file contains multiple nodes named [/camera/image_view]. Please check all <node> 'name' attributes to make sure they are unique. Also check that $(anon id) use different ids. The traceback for the exception was written to the log file

Wow!!!!! @Andre it works. Can you please explain me the reason for future references?

@huanxiner, I got an error roslaunch file contains multiple nodes named [/camera/image_view]. Please check all <node&

Yes, I tried with this but I got an error stating roslaunch file contains multiple nodes named [/camera/image_view]. Pl

Launching a node two times with same namespace Hi, I am trying to generate left and right images from 2 webcameras. The

Launching a node two times with same namespace Hi, I am trying to generate left and right images from 2 webcameras. The

Velocity imparted by twist.linear Hi, I am publishing twist.linear.x = 0.5 on cmd_vel topic within the callback function

Rotation in const Eigen::Affine3d &pose I need to provide position as well as orientation using variable of type Eig

Yes it gives the option to draw cone. But how can I set the apex and cone's base centrer and radius in this?

Draw cone in rviz I want to draw a 3D cone in rviz from the center of my quad-copter to the ends of the obstacle. Rviz a

Hey, did you find any solution? I am stuck at this question!

Will setting the position of my object through service gazebo/setModelState in a node work?