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2021-06-24 15:05:58 -0600 asked a question Issues with subscribing to multiple camera image topics

Issues with subscribing to multiple camera image topics ROS: Noetic Ubuntu: 20.04 Hello, I'm having a strange issue whe

2021-06-24 15:05:57 -0600 asked a question Issues with subscribing to multiple camera image topics

Issues with subscribing to multiple camera image topics ROS: Noetic Ubuntu: 20.04 Hello, I'm having a strange issue whe

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2021-04-06 16:49:25 -0600 commented answer Warnings with base_link in namespace for robot_localization

Thanks again, for your help. If I mention a frame ID in the jackal_description/urdf/jackal.gazebo file, it does change t

2021-04-06 16:44:51 -0600 commented answer Warnings with base_link in namespace for robot_localization

Thanks again, for your help. If I do mention a frame ID in the jackal_description/urdf/jackal.gazebo file, it does chang

2021-04-06 16:32:45 -0600 commented answer Warnings with base_link in namespace for robot_localization

Yeah, I saw that it was in the jackal.gazebo file, but there seems to be no similar parameter there where I can specify

2021-04-06 15:19:28 -0600 marked best answer Warnings with base_link in namespace for robot_localization

Hello,

<group if="$(arg enable_ekf)" > 
  <node pkg="robot_localization" type="ekf_localization_node" name="ekf_localization"  >
    <rosparam command="load" file="$(arg ekf_yaml_path)" />
    <param name="map_frame"       value="map"/>
    <param name="odom_frame"      value="$(arg ns)/odom"/>
    <param name="base_link_frame" value="$(arg ns)/base_link"/>
    <param name="world_frame"     value="$(arg ns)/odom"/>
  </node>
</group>

The above are the relevant lines in my launch file, but when I try it to run it, there are warnings thrown and the functionality is not as expected. The warnings are as below:

[WARN] [1617652671.519795535, 1553.900000000]: Could not obtain transform from base_link to jackal2/base_link. Error was "base_link" passed to lookupTransform argument source_frame does not exist.
"base_link" passed to lookupTransform argument source_frame does not exist.

I don't understand why these would come up since I am specifically assigning a base_link_frame. Why does it matter if "base_link" exists or not?

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2021-04-06 15:19:23 -0600 commented answer Warnings with base_link in namespace for robot_localization

Thank you! This was exactly what I was looking for. But it seems that my IMU publishes to 'base_link' rather than 'jacka

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2021-04-06 12:43:04 -0600 commented answer Warnings with base_link in namespace for robot_localization

You're right, I've replied to a previous comment as to what is happening, although the tf tree seems to be okay

2021-04-06 12:42:29 -0600 commented question Warnings with base_link in namespace for robot_localization

Looks like the velocity controller which is used by the ekf sends 'odom' with 'base_link' header, instead of robot_names

2021-04-06 02:23:29 -0600 commented question Navigation doesn't work when launching robot under a ns

I cloned the PR earlier, and it worked fine for the robot_state_publisher itself. My problem is more with the robot_loca

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2021-04-05 16:26:08 -0600 edited question Warnings with base_link in namespace for robot_localization

Warnings with base_link in namespace for robot_localization Hello, <group if="$(arg enable_ekf)" > <node pk

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2021-04-05 16:23:40 -0600 edited question Warnings with base_link in namespace for robot_localization

Warnings with base_link in namespace for robot_localization Hello, <group if="$(arg enable_ekf)" &gt;="" <nod

2021-04-05 16:22:34 -0600 asked a question Warnings with base_link in namespace for robot_localization

Warnings with base_link in namespace for robot_localization Hello, <group if="$(arg enable_ekf)" &gt;="" <

2021-04-05 14:54:13 -0600 commented question Navigation doesn't work when launching robot under a ns

I'm having a similar issue, have you been able to find a solution?

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2019-04-08 01:08:24 -0600 marked best answer Matching RGB image with Point Cloud

I have two different sensors,one for capturing an RGB image (from an Intel RealSense SR300), and one for giving me a 3D Point Cloud(from a DUO MC stereo camera). How can I integrate the two? Is it possible to match the pixels of the RGB image to the points in the Point Cloud? I need a separate depth sensor because the SR300 does not work in the presence of ambient light.

Is there any method for this? Can it be done while retaining accuracy?

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2018-01-11 07:27:56 -0600 asked a question Single image pair processing with stereo_image_proc

Single image pair processing with stereo_image_proc Now, stereo image proc works with a stream of input L and R images a

2018-01-11 00:44:51 -0600 commented question stereo_calibration - rotation and translation matrix from output?!

Same here. If either of you have found out how to get that information, please let me know

2018-01-10 08:15:48 -0600 asked a question Using the result from ros stereo camera calibration tool with opencv rectify.

Using the result from ros stereo camera calibration tool with opencv rectify. For some reason, I am unable to perform ca

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2018-01-08 21:11:13 -0600 asked a question Matching RGB image with Point Cloud

Matching RGB image with Point Cloud I have two different sensors,one for capturing an RGB image (from an Intel RealSense