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Welcome to the TagSLAM group. This is the place to ask questions about how to use TagSLAM, and make suggestions on how to improve it.

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5/29/20

upgraded version of GTSAM to 4.0.2

I have upgraded TagSLAM to use GTSAM 4.0.2 (the GTSAM version so tagged in the gtsam git repo). This

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upgraded version of GTSAM to 4.0.2

I have upgraded TagSLAM to use GTSAM 4.0.2 (the GTSAM version so tagged in the gtsam git repo). This

5/29/20

R-Meta, Bernd Pfrommer2

Jun 10

Estimating the posture of a block

To find the poses of the tags on the body, you would typically just specify one of the tag's

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Estimating the posture of a block

To find the poses of the tags on the body, you would typically just specify one of the tag's

Jun 10

Vybhav Devarakonda, Bernd Pfrommer2

Apr 5

error while trying to build the package in ros2 humble

Yeah, sorry Humble is not supported, and probably will not be. The problem is that with Jazzy many

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error while trying to build the package in ros2 humble

Yeah, sorry Humble is not supported, and probably will not be. The problem is that with Jazzy many

Apr 5

Torchtopher, Bernd Pfrommer4

Mar 27

TagSLAM latency

Hi again, We did a full few hours of practice today, so probably 2 hours of robot running. Our

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TagSLAM latency

Hi again, We did a full few hours of practice today, so probably 2 hours of robot running. Our

Mar 27

Srividya Prasad, Bernd Pfrommer20

10/24/24

TagSLAM for mobile robot in simulation

Problems were: 1) Your tag poses were poor. If you visualize them with rviz, they are not on a

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TagSLAM for mobile robot in simulation

Problems were: 1) Your tag poses were poor. If you visualize them with rviz, they are not on a

10/24/24

Daniel Lines, Bernd Pfrommer2

6/14/24

Sorry, I cannot follow your links, they seem broken. I updated the README and enabled continuous

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Sorry, I cannot follow your links, they seem broken. I updated the README and enabled continuous

6/14/24

Torchtopher, Bernd Pfrommer5

1/21/24

Fixing Z axis to be 0 for robot known to be on the floor

Thanks for all of your help! TagSLAM seems to working on our robot! We had a few more questions about

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Fixing Z axis to be 0 for robot known to be on the floor

Thanks for all of your help! TagSLAM seems to working on our robot! We had a few more questions about

1/21/24

Zitong Lan, Bernd Pfrommer2

12/6/23

Doing Tagslam in realsense d455f, issue about the bag file.

You are kind of on the right track. 1) First get intrinsic camera calibration. Either the camera

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Doing Tagslam in realsense d455f, issue about the bag file.

You are kind of on the right track. 1) First get intrinsic camera calibration. Either the camera

12/6/23

Emmett Wise, Bernd Pfrommer2

12/6/23

Questions Regarding the Contents of Reference Bags

There is no ground truth for any of the tagslam_test bags. The odometry generally comes from a VIO

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Questions Regarding the Contents of Reference Bags

There is no ground truth for any of the tagslam_test bags. The odometry generally comes from a VIO

12/6/23

Zitong Lan, Bernd Pfrommer2

12/5/23

I want to run tagslam_test, after catkin build. i get the devel/setup.bash file. but get wrong message error: package 'tagslam_test'

Not quite sure where things go wrong, so one step after the other 1) First build the full tagslam

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I want to run tagslam_test, after catkin build. i get the devel/setup.bash file. but get wrong message error: package 'tagslam_test'

Not quite sure where things go wrong, so one step after the other 1) First build the full tagslam

12/5/23

yusuke sakamaki, Bernd Pfrommer5

10/24/23

Integrating Odometry with TagSLAM for Continuous Position

I checked the frequencies with 'rostopic hz' as you pointed out and found them to be

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Integrating Odometry with TagSLAM for Continuous Position

I checked the frequencies with 'rostopic hz' as you pointed out and found them to be

10/24/23

Sarthak Mittal, Bernd Pfrommer3

9/21/23

Identifying erroneous tag IDs and dropping them

Just needed a starting point so this is good enough for me. Thank you so much, Bernd! All the best

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Identifying erroneous tag IDs and dropping them

Just needed a starting point so this is good enough for me. Thank you so much, Bernd! All the best

9/21/23

Li Brus, Bernd Pfrommer14

7/30/23

Assessing whether IMU data is being used correctly

Thank you, Doctor. I have resolved this issue. It was a formatting problem. 在2023年7月30日星期日 UTC+8 18:

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Assessing whether IMU data is being used correctly

Thank you, Doctor. I have resolved this issue. It was a formatting problem. 在2023年7月30日星期日 UTC+8 18:

7/30/23

7/16/23

New vision-guided camera for tagslam

Hello everyone, regarding the Tagslam application, I have added more output parameters to this vision

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New vision-guided camera for tagslam

Hello everyone, regarding the Tagslam application, I have added more output parameters to this vision

7/16/23

yusuke sakamaki, Bernd Pfrommer3

7/11/23

Where is tagslam_test ROSBAG file

I have confirmed that the following ROSBAG files are available. * reference.bag.bz2 * tag_detections.

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Where is tagslam_test ROSBAG file

I have confirmed that the following ROSBAG files are available. * reference.bag.bz2 * tag_detections.

7/11/23

Li Brus, Bernd Pfrommer6

5/4/23

Extracting tags from images in a bag

thank you very much! 在2023年4月20日星期四 UTC+8 05:09:22<bernd.p...@gmail.com> 写道： Ok, so this bag

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Extracting tags from images in a bag

thank you very much! 在2023年4月20日星期四 UTC+8 05:09:22<bernd.p...@gmail.com> 写道： Ok, so this bag

5/4/23

张宝先, Bernd Pfrommer14

4/16/23

could not initialize subgraph!

Yes, thank you very much! On Friday, April 14, 2023 at 7:23:18 PM UTC+8 bernd.p...@gmail.com wrote:

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could not initialize subgraph!

Yes, thank you very much! On Friday, April 14, 2023 at 7:23:18 PM UTC+8 bernd.p...@gmail.com wrote:

4/16/23

kk shen, Bernd Pfrommer2

3/30/23

can't recognize my apriltag

Looks like your apriltag detector is not configured correctly. Can you post the launch file for the

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can't recognize my apriltag

Looks like your apriltag detector is not configured correctly. Can you post the launch file for the

3/30/23

Foollor Lol, Bernd Pfrommer5

2/28/23

How do I use tagslam

I see. Thanks. I have tried using continous detector from April tag to confirm that it does work but

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How do I use tagslam

I see. Thanks. I have tried using continous detector from April tag to confirm that it does work but

2/28/23

Mahroo, Bernd Pfrommer8

2/24/23

Add tagfamily 52H13Standard

It used to be the number of bits of the range of ids. So payload a payload of 4 would mean 2^4 = 16,

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Add tagfamily 52H13Standard

It used to be the number of bits of the range of ids. So payload a payload of 4 would mean 2^4 = 16,

2/24/23

Mahroo, Bernd Pfrommer4

1/23/23

Accumulated error during mapping

Usually the image center is close to 1/2 the width and 1/2 the height of the sensor (in pixels). In

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Accumulated error during mapping

Usually the image center is close to 1/2 the width and 1/2 the height of the sensor (in pixels). In

1/23/23

Mahroo, Bernd Pfrommer3

1/20/23

Run tag detector with .mp4 video

Thanks for your reply, the problem was with the bag file and now it's working as expected. On

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Run tag detector with .mp4 video

Thanks for your reply, the problem was with the bag file and now it's working as expected. On

1/20/23

Hongbo Zhu, Bernd Pfrommer4

12/12/22

an initial guess for multi-camera extrinsic calibration

From looking at the code, camera_poses.yaml has the extrinsic calibration only whereas calibration.

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an initial guess for multi-camera extrinsic calibration

From looking at the code, camera_poses.yaml has the extrinsic calibration only whereas calibration.

12/12/22

Jan Li, … Hongbo Zhu8

12/7/22

sync_and_detect for multi-cameras

Thanks for your reply! I have fixed the problem. It is all about the hard syncronization of my

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sync_and_detect for multi-cameras

Thanks for your reply! I have fixed the problem. It is all about the hard syncronization of my

12/7/22

Ryan Wong, Bernd Pfrommer6

11/28/22

Tagslam in Raspberry Pi OS Debian

All depends on resolution of the camera and the CPU. On a desktop I can get 20fps on a 1280x1024

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Tagslam in Raspberry Pi OS Debian

All depends on resolution of the camera and the CPU. On a desktop I can get 20fps on a 1280x1024

11/28/22

Ismael Gimenez, Bernd Pfrommer3

11/24/22

How to select camera for apriltag_detector_node.launch

Thank you Bernd,I understand now, I had misunderstood how remap works. El viernes, 18 de noviembre de

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How to select camera for apriltag_detector_node.launch

Thank you Bernd,I understand now, I had misunderstood how remap works. El viernes, 18 de noviembre de

11/24/22

vamy wu, … Bernd Pfrommer9

11/14/22

Problems with render tags:Cannot load command parameter [tags]: no such command

Thank you all for your replies, I have put this on hold for the last month for some reason. After

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Problems with render tags:Cannot load command parameter [tags]: no such command

Thank you all for your replies, I have put this on hold for the last month for some reason. After

11/14/22

Ismael Gimenez, Bernd Pfrommer3

10/21/22

Ok, thank you Bernd. El viernes, 21 de octubre de 2022 a las 15:59:19 UTC+2, bernd.p...@gmail.com

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Ok, thank you Bernd. El viernes, 21 de octubre de 2022 a las 15:59:19 UTC+2, bernd.p...@gmail.com

10/21/22

Ath.Y, Bernd Pfrommer6

10/19/22

cannot launch node

I really don't know what is broken. On a clean Ubuntu 18.04 LTS installation it should work. The

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cannot launch node

I really don't know what is broken. On a clean Ubuntu 18.04 LTS installation it should work. The

10/19/22

Ath.Y, Bernd Pfrommer2

10/14/22

Installation Error

Looks like you need to deposit your ssh keys with github: https://docs.github.com/en/authentication/

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Installation Error

Looks like you need to deposit your ssh keys with github: https://docs.github.com/en/authentication/

10/14/22

Ryan Wong, Bernd Pfrommer10

10/4/22

TagSLAM for ground robot

Ok, i get it now. Thanks for the clarification and save me the money and trouble to find another

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TagSLAM for ground robot

Ok, i get it now. Thanks for the clarification and save me the money and trouble to find another

10/4/22

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