Publishing camera_info messages
Hello everyone I am using Ubuntu 14.04 and Ros Indigo. I am trying to make the tutorial on camera_calibration (http://wiki.ros.org/camera_calibration/Tutorials/MonocularCalibration) To do this they ask...
View Articlehow 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 any checkerboard? (I do not have the...
View ArticleCamera matrix drastically changes between successive calibrations of low-res...
I'm using camera_calibration package to calibrate a camera using checkerboard (in gazebo environment). The resolution of the camera is 84x84, and I've managed to calibrate the camera thrice. camera...
View ArticleCamera matrix drastically change between successive calibrations of a low...
I'm using camera_calibration package to calibrate a camera using checkerboard (in gazebo environment). The resolution of the camera is 84x84, and I've managed to calibrate the camera thrice. camera...
View ArticleHow 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 topic...
View ArticleStereo-camera calibration with one camera upside down
I'm trying to calibrate a stereo camera with one of the cameras upside down, but the results are far from correct (rectified image is distorted). The images are being published using...
View ArticleThe 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...
View ArticleLeft and Right camera according to ROS/OpenCV
HI, I am currently trying to calibrate 2 cameras (stereo calibration) and tried using [this tutorial](http://wiki.ros.org/camera_calibration/Tutorials/StereoCalibration). **Question**: What is the...
View ArticleHow to get raw stereo camera calibration from left and right camera_info...
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...
View ArticleROS monocular camera_calibration error
I am trying to calibrate an Orbbec Astra Pro with the ROS camera_calibration package on a Jetson TK1 running Ubuntu 14.04 with ROS indigo installed. I installed the ROS camera calibration binaries for...
View ArticleHow to implement calibration algorithm for camera?
How do I 'implement' a new calibration algorithm for kinect camera of my robot? Should I create a new node for this? I'm new to ROS so would appreciate assistance:)
View Articledepth_camera_info and rgb_camera_info always same
I would like to simply get the distance from the **/camera/depth/image_rect** topic . I use an asus xtion pro live camera and also the openni ros indigo package. Now my problem is that the distance to...
View ArticleAbout the camera calibration parameters
Hi, I have been looking at the camera calibration parameters generated during the calibration and the explanation of the cameraInfo parameters in the ROS wiki. I can't figure out what the K' matrix is...
View ArticleUsing 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...
View ArticleHow to use camera calibration in uvc_camera node?
I have done camera calibration according to [this tutorial](http://wiki.ros.org/camera_calibration). I have my camera.yaml:> image_width: 640 image_height: 480 camera_name: camera camera_matrix:...
View ArticleRemove a single ROS package
I'm still trying to solve [this](https://answers.ros.org/question/296087/camera_calibration-opens-gui-window-but-freezes/) problem in another question. I decided to uninstall camera_calibration and...
View Articlecamera_calibration opens gui window but freezes
I'm trying to run the camera_calibration node. I run this command: rosrun camera_calibration cameracalibrator.py --size 8x7 --square 0.023 --approximate=0.1 --no-service-check...
View ArticleKinect camera calibration is taking hours. What to do?
How to draft a faster calibration method for kinect camera? It takes 3 hours now to complete a calibration. I want to reduce this time. May I request assistance from someone?
View ArticleWhy is image_raw better than image_rect_color ?
Hi, I am using Kinetic version. I made monocular camera calibration of Logitech c930e by using [this tutorial of ROS](http://wiki.ros.org/camera_calibration/Tutorials/MonocularCalibration). Afterwards,...
View ArticleStereo Calibration from images file
Hi I have a set of images of a checkerboard pattern from a camera whose calibration info I would like to find out. I have a ROS driver for my Point Grey Chameleon3 Camerars and can publish rostopic...
View ArticleHow to use camera calibration restults from the ROS stereo calibration to...
Hi Im using two point Grey Chameleon3 mono camera set up as Master Salve and synchronized so can work as stereo camera. I have a installed ROS driver and able to publish the camera topics . Im using...
View ArticleHow to publish/stream roi of rectified images by using image_proc?
I have calibrated camera by using cameracalibrator.py node. When I use image_proc node to compare raw and rectified images, I don't get what I want. Although image is rectified, border of the image is...
View Articlecamera 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...
View ArticleUnable to launch calibration window when doing monocular camera calibration
I'm running kinetic on Ubuntu 16.04, and I attempted to follow the camera calibration tutorial, but I could not reliably get the calibration window to launch despite receiving no errors after I...
View ArticleROS Projector Camera calibration package
I am trying to calibrate a projector-camera stereo pair. Is there a projector to camera calibration package in ROS? I am looking for something similar to the one available for the monocular or stereo...
View ArticleHow to configure CameraInfoManager set_camera_info service name?
How do I configure CameraInfoManager to publish the correct set_camera_info services? I am working on a very simple node to take stereo images produced by a stereo USB camera where the images come in...
View ArticleRead the camera's calibration parameters from the file and publish them on...
I have calibrated my camera according to this [tutorial](http://wiki.ros.org/camera_calibration/Tutorials/MonocularCalibration), and the obtained calibration parameters are stored in the `yaml` and...
View ArticleReading Stereo Camera Calibration using rosparam
Hi all! I have a YAML file which contains calibration matrices for a stereo pair of cameras. I just can't figure out how to get the calibration data into a CameraInfoManager instance. The YAML file...
View ArticleAsus Xtion / MS Kinect Extinsics Calibration
Hi, I am following [this tutorial](http://wiki.ros.org/openni_launch/Tutorials/ExtrinsicCalibration) to calibrate my ASUS Xtion PRO Live's rgb and depth camera on an Ubuntu 18.04 running ROS Melodic....
View ArticleOption --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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