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2020-07-13 05:25:47 -0500 | answered a question | Nodelets not running together Turns out the all those 3 Nodelets had while loops inside onInit, only one Nodelet with a while loop inside works, I gue |
2020-07-12 19:21:45 -0500 | edited question | Nodelets not running together Nodelets not running together I'm trying to run 4 nodelets together, but for some reason the last 3 seem to be incompati |
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2020-07-12 18:30:04 -0500 | edited question | Nodelets not running together Nodelets not running together I'm trying to run 4 nodelets together, but for some reason the last 3 seem to be incompati |
2020-07-12 18:29:20 -0500 | asked a question | Nodelets not running together Nodelets not running together I'm trying to run 4 nodelets together, but for some reason the last 3 seem to be incompati |
2020-01-16 05:35:06 -0500 | marked best answer | Multiple TF issues while running SLAM I am running ETH zurich's version of ORB SLAM on a bagfile of Kitti dataset of Stereo Images which I am playing at 0.1 r.
The SLAM publishes TF in the camera's frame,
while I am able to see it when I echo /tf_static but when I do rosrun tf view_frames this is what I get I am also unable to visualize it in Rviz which says no transform exists between cam0 and base_link This same problem exists when I run S-PTAM slam ,I wrote a small code to subscribe to pose and republish a transform between a new frame odom to the cam_link and still face the same issue. This issue only occurs when I publish a static transform on moving frame like cam0 if I instead publish on some other new random frame everything works perfectly. Not sure what is wrong. here is sample tf data from orb_slam: |
2020-01-16 05:35:03 -0500 | commented answer | Multiple TF issues while running SLAM Yes, you're right, that was the problem. |
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2019-05-02 11:03:41 -0500 | marked best answer | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> I'm trying to find a cascaded transform but I'm running into the following errors : |
2019-05-02 10:36:00 -0500 | answered a question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> I rectified the error by : tf::TransformListener listener; tf::StampedTransform transform_cd; tf::Transform transform |
2019-05-02 09:22:04 -0500 | edited question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::transform> I'm trying to find a cascaded tra |
2019-05-02 09:21:26 -0500 | commented question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> This is what I'm attempting to do transform_tc = tag_transform.inverse(); transform_td = transform_tc*transform_cd; |
2019-05-02 09:20:20 -0500 | edited question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::transform> I'm trying to find a cascaded tra |
2019-05-02 09:14:36 -0500 | edited question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::transform> I'm trying to find a cascaded tra |
2019-05-02 09:12:59 -0500 | edited question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::transform> I'm trying to find a cascaded tra |
2019-05-02 09:12:08 -0500 | asked a question | Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::Transform> Extract tf::Transform from tf::StampedTransform & tf::Stamped<tf::transform> I'm trying to find a cascaded tra |
2019-04-07 22:36:38 -0500 | marked best answer | Fusing multiple sensors of same type using robot_localization. Hi, I understand fairly clearly how data from Multiple sensors of different type like IMU, GPS , Wheel-Odometry etc can be fused using the Kalman-Filter. But how does robot_localization fuses data from multiple sensors of same type say velocity input from 2 Wheel Odometers? Is it simply weight averaged using their individual co-variances and the combined output is sent as a single Odometry measurement to the Kalman filter or is it a lot more complex process? |
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2018-09-14 17:23:49 -0500 | marked best answer | Simulate GPS sensor via ROS plugins (Hector_Plugins) Hi, I am new to ROS I'm trying to simulate some realistic sensors with noise, drift and bias on a DBW car. I have used the following code to simulate an IMU . and I'd be grateful if someone could help me out with GPS , I've already downloaded the Hector Plugins ( http://wiki.ros.org/hector_gazebo_plu... ) but I'm not sure how to modify the code to use those plugins. Thank You, Sal. |
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2018-07-30 07:08:14 -0500 | marked best answer | ROS c++ Class Subscriber doesn't work while publishing in constructor Hi, The following code subscribes to topics containing data of individual wheel angular velocities, I am simply combining them and publishing the Odometry of the base_link. I've been trying to do everything in the class itself but when I am running the While loop which is publishing the Odometry in the constructor the Subscriber Callback functions don't work. In the following code callback functions don't work. While rostopic info shows that I am subscribing to those topics but the callbacks just don't run. When I remove the while loop from the constructor and place it inside one of the callbacks , Everything runs smoothly (more) |
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2018-07-30 06:29:44 -0500 | commented question | ROS c++ Class Subscriber doesn't work while publishing in constructor It's working !! |
2018-07-30 06:25:16 -0500 | commented question | ROS c++ Class Subscriber doesn't work while publishing in constructor Yeah your'e right . Thanks ! |
2018-07-30 06:10:46 -0500 | commented question | ROS c++ Class Subscriber doesn't work while publishing in constructor Uncommenting those portions inside main also leads to the same problem i.e : subscriber callbacks don't work. |
2018-07-30 06:03:36 -0500 | edited question | ROS c++ Class Subscriber doesn't work while publishing in constructor ROS c++ Class Subscriber doesn't work while publishing in constructor Hi, The following code subscribes to topics conta |
2018-07-30 05:58:50 -0500 | asked a question | ROS c++ Class Subscriber doesn't work while publishing in constructor ROS c++ Class Subscriber doesn't work while publishing in constructor Hi, The following code subscribes to topics conta |
2018-07-12 01:51:49 -0500 | asked a question | Compiling gmapping on Raspberry pi 3 Compiling gmapping on Raspberry pi 3 I followed this http://wiki.ros.org/ROSberryPi/Installing%20ROS%20Kinetic%20on%20th |
2018-07-12 01:36:59 -0500 | commented answer | How to add cv_bridge and image_transport package to compile in Raspberry Pi? Hey luck on solving this error? I am trying to compile gmapping on Raspberry Pi and after installing a few dependencies |
2018-06-02 07:20:16 -0500 | asked a question | Multiple TF issues while running SLAM Multiple TF issues while running SLAM I am running ETH zurich's version of ORB SLAM on a bagfile of Kitti dataset of Ste |
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2018-04-09 04:18:07 -0500 | commented answer | robot_localization:fusion of IMU and visual inertial odometry(VIO) It could happen that a component of gravity is being reflected on one of the x,y axis as drone could tilt translating in |
2018-04-09 04:17:55 -0500 | commented answer | robot_localization:fusion of IMU and visual inertial odometry(VIO) It could happen that a component of gravity is being reflected on one of the x,y axis as drone could tilt translating in |