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How to verify if the camera is calibrated?

I am trying to perform RGB camera calibrations with ROS2 Humble on Ubuntu 22.04.4 . For this, I'm using cameras from LUCID connected with POE , model : Lucid Triton 54s-cc: https://thinklucid.com/...
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Covariance Matrix for the Measurement Model using a Camera

I'm currently taking an introductory course in Autonomous Systems where our project involves implementing the FastSLAM algorithm for an Alphabot2. This project uses a camera and Aruco markers as ...
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How to calibrate RGBD camera position under ROS2?

I have a RealSense RGBD camera mounted on a robot's end-effector and would like to calibrate the camera's position relative to said end-effector under ROS2. I am using the moveit hand-eye calibration ...
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How to scale projection matrix?

I was going through the camera calibration lecture by professor Shree Nayar. At 4:49, he is : Scaling the projection matrix implies simultaneously scalign the world and the camera, which does not ...
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Callibration of Intel RealSense Camera

I am using a 640x480 pixel image feed to detect objects using YOLOv5. Should it be necessary to change the calibration of Intel RealSense as well since my requirement is 640x480 pixel resolution? ...
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Calibration of camera using ROS, without camera info

As part of a college project, I need to communicate with a TM5-700 robotic arm developed by Omron, and implement, for now, a pick and place pipeline. For that, I am required to access the camera ...
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Camera info not being published by v4l2_camera_node

I am trying to use a web cam with the aruco_ros package to estimate the pose of an ArUco marker. The package I am using to get the camera images is the ...
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Does the industrial_extrinsic_cal package support multi cam extrinsic calibration with non-overlapping FOVs?

I know it can do "Multi-Camera Extrinsic Calibration with a Target" as per this tutorial (http://wiki.ros.org/industrial_extrinsic_cal/Tutorials/Multi_camera_calibration), but does it work ...
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Checking camera calibration

I have calibrated a camera and want to check how good the calibration is. I have used the camera_calibration package to calibrate the camera, and the camera_info now looks like this: ...
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why the left 3x3 portion of Projection matrix(P) is different from the Intrinsic camera matrix(K)?

Intrinsic camera matrix for the raw (distorted) images. [fx 0 cx] K = [ 0 fy cy] [ 0 0 1] Projects 3D points in the camera coordinate frame to 2D pixel coordinates using the focal lengths (fx, fy) ...
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How to publish more than 5 distortion parameters through sensor_msgs::CameraInfo structure?

Hi guys. I have a node which publishes images to /image_raw topic and camera calibration data to /camera_info topic. It is setting lens distortion coefficients using the "d" vector of ...
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extrinsic calibration of non-overlapping cameras

Hello everyone, does anybody have any idea how to calculate the relative transformation between the cameras of a multi camera rig with no overlap? Thanks in advance. Originally posted by Ifx13 on ROS ...
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How to fix camera_calibration giving error on save in Noetic

I am running camera_calibration in Noetic: rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.026 image:=/camera/image_raw camera:=/raspicam_node ...
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How to change the camera model when using image_pipeline?

Hi, I do some binocular camera calibration tests with image_pipeline. For some reasons, I can not see the video in the image_pipeline/Tutorials page. I have to ask questions there. 1, How can I cange ...
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Option --square for camera calibration with circle/acircle pattern

Hello, I have a question regarding the camera_calibration package. In the documentation (http://wiki.ros.org/camera_calibration) it is mentioned that it is possible to use a circular / asymmetric ...
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camera calibration with different chess board size

Hi, I want to perform monocular camera calibration using a chessboard that has 6X6 squares in it where each square has side length as 0.054 m. The number of squares in the chessboard and side of ...
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Remove a single ROS package

I'm still trying to solve this problem in another question. I decided to uninstall camera_calibration and install it again, see if that helps. However if I try to remove the package with apt-get it ...
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2 answers
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camera_calibration opens gui window but freezes

I'm trying to run the camera_calibration node. I run this command: ...
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Using camera calibration results in OpenCV

I've calibrated Kinect intrinsics (both depth and rgb) using camera_calibration module and saved a bunch of rgb images afterwards (calibration file was detected successfully; subscription to kinect1/...
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How to get raw stereo camera calibration from left and right camera_info messages

Hi guys, I am trying to obtain the stereo un-rectified calibration (that is un-rectified extrinsics R and t; and calibration matrix K for each camera) from the left_camera_info.yaml and the ...
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Left and Right camera according to ROS/OpenCV

HI, I am currently trying to calibrate 2 cameras (stereo calibration) and tried using this tutorial. Question: What is the Translation (and Rotation) vector in the output of the calibration ? Is it ...
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The right way to use CameraInfo to correct barrel distortion

Environment: Kinetic, on Ubuntu 16, kernel 4.13.0-31-generic OpenCV: 3.3.0 C++ code base I have a USB camera which is easily publishing the raw images and the default camera_info topics, as generated ...
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How to use camera_info_manager to publish camera_info

I am trying to calibrate my ov7251 camera using the camera_calibration package. I adapted a sample camera driver that I found which use the UV4L API so that I can try to publish images to the ROS ...
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how to check calibration of a single camera?

Hi, What's the best way to check the calibration of a single camera? Is there a way to load the calibration into the camera_calibration package and check it using ...
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1 answer
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Export matlab monocular camera calibration parameters to ROS

I have calibrated my camera using matlab's calibration toolbox and saved it as a .mat file. Is there a way to convert this file into yaml? Also once I have the yaml file, how can this file be accepted ...
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1 answer
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Unable to view image using image_view in ROS Indigo with rosberrypi_cam

I have succesfully installed the rosberrypi_cam package following this page. After that when I execute the command rosrun rosberrypi_cam rosberrypi_cam_node the ...
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Can't find camera calibration file

Hi, I'm trying to use a USB Camera, HP HD 4310, with ROS. The thing is, i'm reallu new at ROS, so i must be missing something really basic. First, I installed uvc_camera. I confirmed that my camera is ...
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Camera launch ignores camera info urls

Hello, I am using an Orbbec Astra camera with the astra drivers. My launch file looks like this: ...
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1 answer
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StereoCalibration GUI doesn't start

This is the message displayed in the console: rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.108 right:=/optris/thermal_binary left:=/camera/rgb/image_rect_color left_camera:=/...
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2 answers
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Parameters for camera_pose_calibration

I'm trying to use the camera_pose_calibration package, which seems easy to use. Thank you! Can you help me understand some of the parameters: PatternParameters pattern_width: Is this the # of dots in ...
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cameracalibrator.py GUI opens but is not drawn

I'm trying to calibrate a single camera using cameracalibrator, as explained in http://wiki.ros.org/camera_calibration/Tutorials/MonocularCalibration Despite being able to see the camera using ...
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camera calibration quality

Hi, all! I am using camera calibration node for monocular camera. Is there any criterion that says how well the camera was calibrated? And the second question is: should I pass rectified image to some ...
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Are camera calibration files resolution agnostic?

Are the calibration parameters, generated by cameracalibrator.py, portable across arbitrary camera resolutions? I'm attempting to calibrate a Raspberry Pi camera following the monocular camera ...
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1 answer
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usb_cam package and head_camera.yaml missing

Hello, I am new to ROS. I have been trying to do usb camera integration into a robotics project at our university's lab. I will write the steps i did and the errors that i got. I went into my ~/...
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camera calibration service not available (specific driver for VRMagic)

Hello all; I am using "camera calibration" node to calibrate a stereo system based on a VRMagic D3 stereo camera. The driver I am using to obtain the images from the camera is "...
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1 answer
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camera_calibration "ImportError" for stereo setup

Hi all; I am using camera_calibration node (http://wiki.ros.org/camera_calibration) to calibrate a stereo system based on a VRMagic D3 camera. To access the images of the smartcam I am using ...
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Zoom camera calibration in ROS?

How would you tackle the task of zoom camera calibration using standard ROS tools? Both the calibration process itself, and camera_info publication afterwards? I ...
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1 answer
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Reuse camera calibration parameters?

I am using a stereo camera set up which I need to recalibrate every time I want to use it. Is there anyway to save the best camera calibraiton parameters I got and just reuse them? It would probably ...
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1 answer
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camera matrix differs from given example in ROS

Hi everybody I am using Logitech and I got camra calibrated results ...
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1 answer
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How to use camera calibration with ubuntu 14.04?

I use ubuntu 14.04 and ROS Indigo. I try to run lsd_slam using image list. It requires a calibration file. So, I try to create a calibration file using ...
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camera_calibration - override enough data check

Hi everybody, I'd like to calibrate a stereo rig with the camera_calibration stereo node. I have a set of pre-recorded images that I publish using a simple ad-hoc player node and with some datasets it ...
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1 answer
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Stereo camera calibration: system error

Hi all, I'm trying to perform a calibration of a stereo usb camera using the usb_cam drivers. I am following the proper tutorial on the ROS wiki page (http://wiki.ros.org/camera_calibration/Tutorials/...
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viso2 stereo disparity

I am trying to use viso2_ros . So I calibrated my stereo camera set. Does the distance between the cameras matter much?Is this setup good enough? The above are my calibration results.Is that fine? I ...
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1 answer
56 views

Unable to set camera info for calibration

What can be wrong if I get the following error upon camera calibration? ...
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Need suggestions for calibrating Asus Xtion Pro live sensor

Hi, I want suggestions from experts here to calibrate the asus xtion pro live sensor. I am running ROS Hydro on Ubuntu 12.04. Also I want to mention I am using openni2 to run the sensor. I read the ...
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1 answer
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camera_calibration runs but cannot calibrate

Hi all, I tried to calibrate my Firefly MV Firewire camera with the provided ROS Indigo package. So I ran roscore and camera1394, and then the command on the wiki. The wiki says that to start the ...
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How can I get extrinsic camera parameters from the ROS camera_calibration package

I want to get more a more accurate point cloud and uv-mapping for the Softkinetic Depthsense by calibrating the intrinsic and extrinsic parameters of the depthsense using the ROS camera_calibration ...
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How to remap service? commit button during camera_calibration doesn't work

Hi, I didn't find accurate answer to this question I would like to remap service from /set_camera_info to /camera/set_camera_info according to this instructions: http://wiki.ros.org/Remapping%...
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ROS Hydro - Cannot commit gscam camera calibration (/set_camera_info not under /camera)

Hello, I started using ROS hydro (in ubuntu 12.04) very recently for a visual odometry project but I got stuck with the following problem: I installed gscam and it runs fine (or at least I think so ...
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Camera Calibration Uses Wrong Aspect Ratio from USB Camera

We are trying to calibrate a USB camera running at 1080p (i.e., 1920x1080). When launching usb_cam and then image_view, the ...
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