No image showing up in rviz

[ArghyaChatterjee]

I calibrated my camera using this tutorial. https://github.com/UbiquityRobotics/raspicam_node I built the package from source following this tutorial. https://github.com/UbiquityRobotics/fiducials I tried to follow this tutorial from ROS official website. http://wiki.ros.org/fiducials First 2 command lines perform good and the last one also performs fine but when rviz shows up, no image is found. I am new to ROS. I am running it on a raspberry pi. No visible error shows except DRI2: failed to authenticate.

[rohbotics]

Hi, Thanks for reporting your issue.

Can you first make sure that you are getting camera data, by changing the Image topic to /raspicam_node/image?

[Wanja1204]

hello, i have the same problem, when I changing the image topic to image raw for my webcam i get a picture but no marker recognition

[jim-v]

Hi,

You should see the camera image without annotations on the topic /raspicam_node/image and with them on /raspicam_node/image, assuming the aruco_detect node is running.

If this is not the case, please let us know and we will figure out why.

[yulan0215]

I calibrated my camera using this tutorial. https://github.com/UbiquityRobotics/raspicam_node I built the package from source following this tutorial. https://github.com/UbiquityRobotics/fiducials I tried to follow this tutorial from ROS official website. http://wiki.ros.org/fiducials First 2 command lines perform good and the last one also performs fine but when rviz shows up, no image is found. I am new to ROS. I am running it on a raspberry pi. No visible error shows except DRI2: failed to authenticate.

Did you solve this problem? How did you solve this problem? Thank you!

[madgrizzle]

@yulan0215, not clear what problems you may be having, but you may want to check this issue and see if its because aruco_detect isn't subscribed to the camera properly.

https://github.com/UbiquityRobotics/fiducials/issues/228

[lewsmith]

Anybody know how to solve this issue? I have a usb cam and I can see the image in rviz for the topic /camera/image_raw but nothing for the topic /fiducial_images

[anfederman]

Please send listing from:

rostopic list

You should see raspicam_node/image and fiducial_images/compressed.

On Tue, Jun 13, 2023, 4:33 PM Lewis Smith @.***> wrote:

Anybody know how to solve this issue? I have a usb cam and I can see the image in rviz for the topic /camera/image_raw but nothing for the topic /fiducial_images

— Reply to this email directly, view it on GitHub https://github.com/UbiquityRobotics/fiducials/issues/188#issuecomment-1590193697, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABHZ375SOW232VTRYBLW6A3XLD2EVANCNFSM4IEAQR4Q . You are receiving this because you are subscribed to this thread.Message ID: @.***>

[anfederman]

I think you need the compressed image, but please send the complete rostopic list.

And then see if rostopic echo fiducial_images is sending data

On Tue, Jun 13, 2023, 4:33 PM Lewis Smith @.***> wrote:

Anybody know how to solve this issue? I have a usb cam and I can see the image in rviz for the topic /camera/image_raw but nothing for the topic /fiducial_images

— Reply to this email directly, view it on GitHub https://github.com/UbiquityRobotics/fiducials/issues/188#issuecomment-1590193697, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABHZ375SOW232VTRYBLW6A3XLD2EVANCNFSM4IEAQR4Q . You are receiving this because you are subscribed to this thread.Message ID: @.***>