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Questions tagged [marker]

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Reconstruct 3d positions of markers relative to each other without camera localization

(Hopefully this question fits here. I'm absolutely new to this field, this is my first question to the community, so please handle my question accordingly. Thanks!) Problem to solve: I have around 20-...
andZab's user avatar
  • 11
1 vote
0 answers
51 views

ArUco Markers Distance Estimation Accuracy Difference

The distance estimated (in cm: Because input size of ArUco Markers in cm too) using the code line after importing math module: ...
Mhd Afz's user avatar
  • 111
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2 answers
181 views

Oriented Bounding Box in RVIZ

I want to visualize an OrientedBoundingBox from Open3D on RVIZ, I have seen the : RvizVisualTools::publishWireframeRectangle RVIZ Line Segments ...
Belal.'s user avatar
  • 26
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2 answers
632 views

How to put ArUco markers in Gazebo Classic

The title says it all. I would like to test my robot's ArUco recognition and processing abilities by putting some markers around environments in classic Gazebo. All the tutorials I see online seem to ...
stephan's user avatar
  • 103
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0 answers
11 views

Selecting frames from video for surface extraction using feature matching

I have a video of an object sitting on an ArUco board. I am currently using ArUco markers to estimate camera transformation and knowing camera intrinsics assessing F. I use BRISK and FLANN to match ...
Odeaxcsh's user avatar
  • 101
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1 answer
51 views

How to get a marker to move with its reference frame?

Hi, I'm learning how to use markers in rviz, currently using ros noetic. I successfully created a marker and can get it to show ...
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1 answer
8 views

Publishing Marker arrow causes Segmentation fault (core dumped)

Hello, I am trying to publish a marker arrow and want to visualize it in rviz with a start and an end point. When I am using the points member as described here http://wiki.ros.org/rviz/DisplayTypes/...
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1 answer
40 views

How to remove lag in marker publishing?

I am publishing markers in a subscriber callback so that whenever new data is received on a topic a marker is created. Markers are published and displayed well at first but after a while markers are ...
user avatar
0 votes
1 answer
53 views

How to display a marker sequence in ros3djs when each are defined in the base_link frame?

I publish markers at the origin of the robot base_link frame regularly. In RViz, a marker is therefore plotted wherever the ...
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0 votes
2 answers
30 views

Minimal working example for RViz marker publishing

Does anyone know of a complete minimal working example to publish a marker that can be visualised in RViz written in Python? ...
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1 answer
7 views

Tracking Robot position using Marker

Hi All, I am using ROS Kinetic on Ubuntu 16.04. I am working on a RVIZ Marker program to track "\AMCL_Pose" parameter and visualize in RVIZ. The code I have written is as follows ...
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1 answer
8 views

How is possible to modify manually occupancy grid cells on a map?

So the point is that during the mapping with a mobile robot I will get a set of coordinates during the process. I was wondering, how is possible to modify the values of the occupancy grid cells nearby ...
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0 votes
1 answer
13 views

How to retrieve absolute pose in ROS

Hello, i'm currently doing the detection of ArUco and Alvar fiducial markers (glued on a cube), by that trying to grasp the cube with the detection of the marker. The camera is mounted on the Panda ...
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0 votes
1 answer
48 views

Aruco Detection: operating the inverse of the Pose results in strange value for Translation

Hello, i'm currently detecting the ArUco Marker with the help of the ros_aruco package. The detection works perfectly, i assume. by doing: ...
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0 votes
1 answer
4 views

Flaw with compute3DCentroid and getMinMax3D

Hey everyone, I'm using the "standard" way of creating bounding boxes for a point cloud cluster, which most resources online are using. My code posted below. However it seems there is a flaw ...
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1 answer
13 views

Arrow Marker Orientation

Hey everyone, I'm trying to publish an Arrow marker in the cluster center of extracted clusters. My goal is to set the orientation to the moving direction of the tracked cluster. For this I'm able to ...
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1 answer
40 views

What exactly does "frame_locked" mean?

Hello, guys. I am trying to study rivz using this tutorials. I saw a message, "frame_locked", parameter of the Marker header. I found the description for understanding on this link. But I ...
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0 votes
1 answer
7 views

rosbag pause Marker disappears

Hello, We have a node that publishes a set of markers. Those markers are part of sensor detections. So they can appear or disappear while the node is running, which is normal. Now after doing a ...
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0 votes
1 answer
2 views

How do I properly use multimarker in an xml file?

I am trying to detect three AR trackers with the ar_track_alvar package link ar_track_alvar package. The three trackers should be detected as a bundle. My xml file which describes the markers looks as ...
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0 votes
1 answer
14 views

error: ‘visualization_msgs::Marker’ has no member named ‘set_points_size’

i wrote fdisplay.cpp in src folder, when i run rosmake , i have error . ...
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0 votes
1 answer
17 views

please create subscriber to the marker (warn)

i did: rosrun using_markers basic_shapes and got the warning: please create a subscriber to the marker I dont get it i want to ...
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0 votes
1 answer
4 views

See previous published Markers in Rviz

New to ROS I have a robot moving around a room. Receive data from the laser scan obtaining a cloud point in the camera's frame and I want to extract significant lines to finally obtain a "linear-...
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0 votes
1 answer
35 views

Rviz markers with rospy

I am trying to visually represent a "robot" as a sphere marker from the visualization_msgs, but I am unable to publish my self.robotMarker. When I rosrun this script I am able to see the ...
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0 votes
1 answer
11 views

moveit: cannot move interactive marker with IKfast

Hello i´ve a problem with ikfast for moveit. i´ve gone trough all tutorials and KDL and Trac_ik are working fine in rviz. However when i´m using the 3DOF IKfast i cant set the goal position with the ...
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0 votes
2 answers
58 views

[RViz] How do I use marker.colors with LINE_LIST?

The doc says colors should have same size as points. But in case of LINE_LIST, there are 2n points, with n = number of lines. I tried both to resize colors to n and 2*n and setting every color twice ...
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0 votes
1 answer
3 views

Why do I need to enter a loop to display a marker?

I followed the tutorial on publishing markers in Rviz, I am wondering why I need to enter a loop to publish a marker that has an infinite lifetime (ros::Duration) I ...
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0 votes
1 answer
4 views

Why ist TRIANGLE_LIST with scale.x = 0.001 not shown?

Hey! I want to draw some triangles in RVIZ via TRIANGLE_LIST and have problems to understand the scale in this case. I had the size set to ...
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0 votes
1 answer
54 views

how to make line strip marker

Hi, I am using Ubuntu 12.04 with Hydro. With reference to Points and Lines tutorial and Basic Shapes, I tried to create marker to each goal i send on rviz. Essentially, I am trying to record and ...
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0 votes
1 answer
4 views

A problem on rviz

Hi guys, I am using ROS hydro and learning the basis of rviz, following the tutorial in http://wiki.ros.org/rviz/Tutorials/Markers%3A%20Basic%20Shapes. But nothing displays on rviz. In Global Options -...
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0 votes
1 answer
6 views

[rviz] tf and Interactivemarker: pose with respect to which frame?

Hi all, I wonder in which frame the interactive_marker.pose field is expressed? It seems relative to interactive_marker.header.frame_id but even considering that hypothesis, I get a strange behaviour. ...
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0 votes
1 answer
42 views

How to display a text as marker name in RVIZ in Python

How to display a text as marker name in RVIZ in Python: I want to add names for the markers in rviz. Can anyone tell me how to add it in python. Originally posted by Rikardo on ROS Answers with karma:...
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0 votes
1 answer
2 views

ar_pose : interprete output of 'ar_pose_marker' && transform

Hello. I want to track a object that is moving inside a room and color the pixel in the cam-image, where the object has moved to. Instead of detect colors etc. I want to do this with markers from ...
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0 votes
1 answer
23 views

marker causes rviz to be slower with time

Hi all, Since I have upgraded to hydro in raring, I notice that rviz becomes slower for some marker types. I notice this specifically for CUBE_LIST and SPHERE_LIST. LINE_LIST does not have a problem. ...
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0 votes
1 answer
8 views

How to add a name to a Marker

I have searched extensively on all the tutorials but I cannot find out how to add a name to my Marker. I have a marker array and want to display different names on every marker in rviz. Does anyone ...
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0 votes
1 answer
33 views

How to find the number of Markers in a Marker Array?

Hi Everyone, I'm trying to write a simple program that extracts the heights from all the markers in a MarkerArray message. However, I am having a lot of trouble doing this. This is how I get the ...
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0 votes
1 answer
30 views

What determines size of interactive markers in RViz?

As per the title: how does the size of interactive markers get calculated in RViz? In particular the markers for revolute joints and the large interactive marker in the ...
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0 votes
1 answer
8 views

Thin visualization marker

Hello, i have a problem with my marker Marker Picture http://imageshack.us/f/580/markerd.png/ as you can see the last line is very thin and i didn't understand why. My code is ...
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0 votes
1 answer
61 views

how to display rviz markers at a fixed location

Hi, I need to display markers (currently few arrows, showing path for robot) at a fixed point wrt my simulated environment. The environment has turtlebot and few objects. While publishing markers if I ...
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0 votes
1 answer
1 view

Bigger marker template for RoboEarth

I would like to record my shoes, but they are too big for the current marker template. Can I somehow adjust the parameters and use a bigger marker template to record bigger objects? Thank you very ...
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0 votes
1 answer
13 views

Placing permanent visual marker in rviz

Hi there, I would like to place a visual marker representing the goal line (through which the robot should pass) in rviz. IMHO, this code should do the trick ...
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0 votes
1 answer
2 views

ROS Answers SE migration: publish marker

Hi, I'm trying to publis a simple marker. A cilinder. I've done this code #!/usr/bin/python import roslib; roslib.load_manifest('ellipse_marker') from visualization_msgs.msg import Marker import ...
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0 votes
1 answer
6 views

making LINE_LIST lines different colors?

hi, very quick summary -- how can you make each line when using LINE_LIST a different color? -- more specific: i'm using Rviz to create a bounding box around found clusters within a pointcloud. i have ...
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0 votes
1 answer
8 views

Drawing the PR2 gripper in Rviz

I'm trying to draw an interactive marker that shows the PR2 gripper. I've found this C++ code in the interactive_marker_helpers package (object_manipulation stack), file interactive_marker_helpers.cpp....
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0 votes
2 answers
22 views

Are there any viewers for ImageMarker?

I've noticed an ImageMarker message type in visualization_msgs. However in searching for ImageMarker in all my installed stacks and via google, I've found no reference to any package using it anywhere....
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0 votes
2 answers
84 views

plotting a MarkerArray of spheres with rviz

Hi, I'm trying to plot a number of sphere markers at a time, appending them to a MarkerArray and then publishing it, using python. Here's part of my code: ...
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0 votes
3 answers
28 views

Plot a Gaussian 3D representation with markers in rviz

Hi people! I'm thinking of plotting a 3D Gaussian Model with a marker defined by a mean vector and a covariance matrix. Is there any rviz plugin to render this? If not, is it possible to do so ...
Pablo Iñigo Blasco's user avatar
0 votes
1 answer
7 views

Rviz visualize only 2d shape

Hi all, I am visualizing COLLADA mesh file in rviz sending a MESH_RESOURCE marker. Every time I try to visualize the mesh I just get a 2D shape. How can I visualize a 3D object? I see a warning on ...
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0 votes
1 answer
7 views

colors does not work on basic rviz markers like LINE_LIST and others

Hi I like to publish marker (lines) with different colors for rviz on diamondback back. Therefore i like to use LINE_LIST markers, but the colors entry of the marker are ignored. Every line has the ...
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0 votes
1 answer
1 view

OpenNI camera parameters gives faulty marker detection

Hey everyone Following my problem with getting the camera parameters from the OpenNi driver which is now solved, then I have set up ArToolKitPlus to detect markers using the RGB camera with the ...
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0 votes
2 answers
4 views

Is there a way to invalidate a Pose in rviz?

I often publish a Pose message to quickly and easily view things in rviz. And I would like a way to programatically (through a message) tell rviz to delete the pose from view. The scenario is that I ...
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