Questions tagged [camera]

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TurtleBot3 tutorial (SLAM) - Camera data is not published (/camera_info)

I am following the Turtlebot3 tutorial about SLAM at the following link. https://emanual.robotis.com/docs/en/platform/turtlebot3/slam/ (Symptom) I could run the SLAM node, but in RVIZ, there is a ...
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Intel RealSense D455 is not working with ROS noetic in Jetson Orin Nano

I tried connecting the Realsense D455 camera, to get point cloud information from the camera. Works fine on a PC. But when connected to Jetson Orin Nano, its shows up with the SDK and Realsense viewer ...
SpaceDoug's user avatar
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ROS2 Humble camera_ros camera_node gives sporadic segmentation faults. How can I fix this?

I am trying to create a simple, repeatable recipe for setting up IMX219 picam2 using ROS2 Humble on a Rasberry Pi 4. I am trying to install as much from binaries as possible, starting from the Ubuntu ...
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Screen cropping and camera issues of Webots

An issue occurred where the screen was cut off when running webots. Also, I have a question because when I overlay the camera, the size is too small and I cannot drag or move the position with the ...
solarbean23's user avatar
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Webots: add a RosCamera to ros_automobile controller?

I took the boomer example project and changed it to a ros_automobile controller by copying the source of ros_automobile into my project. It works and I can put it into gear and set the throttle and ...
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Gazebo11 camera images to ROS 2

Hello Robotics Community! I'm trying to implement a ROS 2 topic to view the images from a camera I have added to the iRobot Create 3 simulation for classic Gazebo. OS: ubuntu-desktop 22.04 ROS 2: ...
kelley's user avatar
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Gazebo camera plugin not sending data to ros

I am on ubuntu 18.04 using gazebo 9 and ros melodic. I am able to run roslaunch and open gazebo with ros and connect it to ardupilot SITL. When i check rostopic in another terminal i am not getting ...
Jack's user avatar
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Projection of boundig box from lidar frame to camera image

i am trying to project the bounding box in 3d from lidar frame to camera image in 2d. I am doing this work in ignition-gazebo simulation. so, basically there is no real hardware except my pc. there is ...
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How to get a topic name in a callback function (Python, Ros2)

I have two cameras subscribing camera1/image_raw and camera2/image_raw respectively. And both subscribers call image_callback when they received any topic. I want to show camera1 image in window1 and ...
suhjw2762's user avatar
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Photographing an object that's moving past a stationary camera

I want to automatically snap high-resolution photos of objects moving past a camera (or a video camera). Due to limited computational power, I need to keep as few frames as possible. I need the entire ...
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Rviz displays camera image incorrectly after changing gazebo sensor resolution

I simulate a camera: ...
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Can't use Ignition Gazebo thermal camera plugin with gpu lidar sensor

I am using Ignition Gazebo Citadel to simulate a differential drive robot, like https://gazebosim.org/docs/citadel/sensors. I am adding a thermal camera to the model (https://gazebosim.org/api/sensors/...
esther's user avatar
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gazebo garden simulating plane with camera

i am trying to simulate a plane with camera in gz garden i want to see resolution and foV settings is it possible doing this in garden do i need to use ROS or should i just switch to classic it would ...
user37546's user avatar
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Camera node does not publish compressed image when launched in a composable container

I'm working on a launch file to launch the v4l2_camera node. I first launched it as a normal node, which worked as expected - it publishes a raw image, and also uses the image transport plugins to ...
adityakamath's user avatar
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Disable shadows for one camera in Gazebo Sim

I have a Gazebo Harmonic simulation, in which I have some lights which cast shadows. I would like to keep those shadows for the overall simulation (i.e. the camera of the GUI), but disable all shadows ...
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Single Board Computer for Real-Time Object Detection

I am developing a pallet detection and pose estimation algorithm with YOLOv3, using a depth camera - R435. Since real time classification is a burden on hardware, I am looking for something that is ...
Alperen Keser's user avatar
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Camera info problem when trying to see topic in rqt

I am executing a camera_info topic with as this: ...
Thiago Blanco's user avatar
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I am trying to use opencv_cam pkg in ros2 humble with a csi stereo camera imx219-83 in a jetson nano and I get green screen

I am trying to use opencv_cam in ros2 humble for a csi stereo cam in a jetson nano. When I run the node : ros2 run opencv_cam opencv_cam_main ,it publishes the ...
Thiago Blanco's user avatar
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Using SLAM in window cleaning robot

With my industrial design project group we are in the early stages of developing a window cleaning robot for tall buildings. We would like to have this robot map the facade of the building using SLAM. ...
Inger's user avatar
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How to scale gazebo garden camera_info with resolution

for background, I'm detecting the pose of objects based on detected pixels using image_geometry. I've tested this code IRL with an oak-d and found it accurate against a ground truth, so it's working ...
Andrew Ealovega's user avatar
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left/camera_info, left/image_raw and right of them not published

I use an OAK-D Pro W camera for ORB-SLAM3 on Ubuntu 20.04 inside WSL 2 (Windows 11). I run the following command ...
Naoto YAMADA's user avatar
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2 answers
109 views

Need advice on implementing ROS2 knowledge in a hardware-based autonomous robot project for navigation and object manipulation

I'm new to ROS2 and looking for guidance on implementing my knowledge in a project. I've learned concepts like publisher-subscriber, services, TF, URDF, RViz, Gazebo, and Navigation2. Now, I want to ...
Adyansh Gupta's user avatar
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2 answers
151 views

Traffic cone detection and mapping

as part of formula student car racing I need a SLAM algorithm that will recognize cones and will build a map (there will be a few laps therefore map is needed for optimal path). The cones are of ...
Shahar's user avatar
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Flir camera buffer issue

I am using Teledyne Flir monocular camera bfs-pge-27s5c-c for my project when I connect it, it runs for a while, and then after some time it gives me this error: ...
a._.lan's user avatar
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add camera plugin in gazebo

Hi, I have added camera plugin in a .urdf file but then I could not added in a launch.py file because of that image topic not published. Is my urdf file correct? And how can I added launch file to ...
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using usb_cam from remote computer. Cannot identify '/dev/video0': 2, No such file or directory

Hello everyone! My configuration is the following: ROS-master computer: Nvidia TX2 with Ubuntu 18.04, ROS melodic and package usb_cam installed on it , and Logitech USB camera connected to it through ...
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2 answers
49 views

Point cloud misaligned with gazebo sensor plugin

Greetings. I have inserted a camera within my gazebo simulation via the gazebo plugin. The camera works as intended, however the point cloud generated does not match the camera picture. Since Octomaps ...
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1 answer
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RViz plugin to visualize camera FOV

Hey guys, Is there any RViz plugin which renders the field of view of a camera (like a 2D sector or 3D cone) in RViz? Thanks Originally posted by electrophod on ROS Answers with karma: 277 on 2022-05-...
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1 answer
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Using robot_localization package does not filter odometry noise

Hello. I'm trying to implement fusion of visual odometry (stereocamera) and IMU using the robot_localization package (EKF) for my autonomous robot vehicle. I've ...
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1 answer
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Rviz Message filter dropping message with rosbag1

I have a bunch of rosbag1 bag files with images, velodyne point clouds, and radar point clouds. I've now attempted a couple different methods of playing rosbag1 files in rosbag2, such as ...
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Visualize camera_info as a set of four image corner rays emanating from the camera origin in rviz?

I think this already exists (maybe it was one package among many in a github repo used in a robotics competition a few years ago), but I'm not finding it now. It would be nice to see where the ...
Lucas Walter's user avatar
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What is the exact format and size of Image() object?

I cannot figure out what is the exact format of the sensor_msg Image() file. When I issue the command: rostopic echo /camera/image_raw I get a massive output ...
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1 answer
45 views

usb-cam using deprecated pixel format

I am using ubuntu mate 20.04 focal and i have installed ros noetic, I am trying to use a logitech c920 webcam, however when i run rosrun usb_cam usb_cam_node i get the following error [swscaler @ ...
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Camera feed frame_id

Very new to ROS but I have set up a CSI camera with ROS melodic, running on ubuntu 18.04 (On jetson nano). And I am trying to overlay a pointcloud on it in rviz, however the camera visualization doesn'...
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1 answer
24 views

Autoware camera-lidar-calibration Error

I trying camera-lidar calibration. Method is below. https://autoware.readthedocs.io/en/feature-documentation_rtd/DevelopersGuide/PackagesAPI/sensing/autoware_camera_lidar_calibrator.html But Error ...
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1 vote
1 answer
43 views

Recommendations for multi-camera fusion for 360 deg image?

Looking for recommendations for ROS nodes or C++ libraries that can take multiple independent camera image streams and combine them into a single 360 deg image stream. I’m looking for something that ...
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1 answer
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Flir Blackfly BFLY-PGE-31S4C (Power of Ethernet) not working with autoware?[SOLVED]

I need a technical support about how to connect to a Gige camera to our Astuff Spectra. Currently my working environment are: Device: Astuff Spectra OS: Ubuntu 18.04 Platform: Autoware.ai + ROS 1 ...
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2 answers
4 views

Ximea package for ros-melodic

I am looking for a Ximea ros package for melodic but couldnt find any. I did however find the package for ros Indigo. I want to use the camera in Ubuntu 18.04 where Indigo is not compatible. Can one ...
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1 answer
15 views

Is there a topic for camera FOV info?

Hi, I'd like to publish info about the field of view of a camera, but I cannot find a standard topic for this information. Before creating a custom topic I want to be sure that there is nothing just ...
Myzhar's user avatar
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alwaysOn camera parameter Gazebo

Hi, I was wondering how I could use the <alwaysOn>true</alwaysOn> tag in the ...
thibs-96's user avatar
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1 answer
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Can I change which topic usb_cam is publishing?

Can I change the topic which each node publishes? I'm using usb_cam with multiple nodes and each node will run in different devices, I need them to publish on different topics so the server can send ...
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1 answer
3 views

Face detection with usb_cam

Hello, I'm following this video on How to use ros usb cam for face detection. In the las part, when I run: ...
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1 answer
126 views

How can I move/zoom the camera in RVIZ?

Hi, I'm using Ubuntu 16.04 and ROS Kinetic. I'm trying to make an AR-Application. For that Issue I want to get a picture stream out of RVIZ. I tried the camera-Display from RVIZ. to get an Image from ...
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43 views

How to publish camera data over ros?

HI, I'm looking to use a usb camera to publish over ros for further computation. Any idea on where I should get started? c Originally posted by alam121 on ROS Answers with karma: 15 on 2020-02-05 ...
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[ROS2] rviz crash when visualizing camera image

Hi, I'm running a ROS 2 node that publishes sensor_msgs::msg::Image on the image topic. The image is a greyscale image and I can ...
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1 answer
35 views

ROS2: URL to camera_info yaml not being recognized

Running ROS2 dashing Ubuntu 18.04 bionic on x86. URL to camera info yaml file not being recognized. The url is being loaded via the launch file as a parameter. I have declared the parameter before ...
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1 answer
2 views

How to stop recording by camera node through an user input?

I would like to stop the camera node through a different node. I was trying to implement this by sending a message through another node which is read by the camera node But, the problem is that the ...
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1 answer
7 views

usb_cam ros kinetic on raspberry pi 3 B

Hi, My Raspicam v1 is not working on Raspberry pi B. I tried various methods to start it with command raspistill -v -o img.jpg and also with raspicam_node package of ROS, but still it did not show any ...
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2 answers
12 views

Which camera for turtle3 burger and how to plug it?

I sent these questions to [email protected] , and they answered me to ask them here. I am preparing a course with Turtlebot3 burgers for Master 2 students at a French engineers school called ...
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Rviz middle button zooming instead of move x/y

I'm playing around with Rviz plotting a point cloud. Trying to move the x/y with middle click, but it's zooming instead. Left button behavior is correct (rotate). Right button behavior also correct ...
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