All Questions
Tagged with opencv ros-kinetic
26 questions
0
votes
1
answer
49
views
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 ...
Tejas Rao
0
votes
1
answer
73
views
How can I convert the KITTI dataset into a bag file?
Hi, I want to convert the monocular KITTI image dataset and poses into a bag file to test computer vision algorithms. I have done some research, however, I have not found any reliable solution.
...
EDU4RDO-SH
0
votes
1
answer
71
views
rtabmap: g2o, GTSAM
why do I need them?
I have installed rtabmap-ros as ROS package. Have I already running g2o and GTSAM?
Originally posted by june2473 on ROS Answers with karma: 83 on 2020-02-03
Post score: 0
june2473
0
votes
1
answer
14
views
I cannot install ROS Kinetic desktop following the tutorial
No way to install ROS Kinetic with OpenCV in RPi4, I followed the official guide, from a fresh install, with swap, with -j1,-j2...
Did somebody get install Kinetic with openCV?
i got install OpenCV 4....
FPSychotic
0
votes
1
answer
109
views
Display image in RVIZ
Hello
Is there any way to send a captured image to the rviz and display it in a certain position?
similar to a Basic geometric markers for Rviz (visualization_msgs / Marker.msg)...
The idea is to use ...
mateusguilherme
0
votes
1
answer
3
views
Combines message for image and information gives "invalid initialization error"
Hello,
I am currently trying to implement a message that includes the images as well as the detected bounding boxes.
The publisher works very well, but the subscriber gives me the following error ...
MarviB16
0
votes
1
answer
57
views
display a 16-bit grayscale images from a thermal camera in OpenCV
I would like to display a 16-bit grayscale images from a thermal camera in OpenCV. I tried different images' encoding but what I get is either totally black or totally white picture. my code looks ...
Khalaf90
0
votes
1
answer
107
views
How to calculate the distance to object with orbbec astra camera
Hello, I am using orbbec Astra camera in order to get the distance to the already detected object. I have detected the object by using OpenCV and /brg/image_raw topic from Astra camera. Now I want to ...
Yehor
0
votes
1
answer
33
views
How to use pcl (+ cuda modules) with ROS
Hi,
I want to use pcl and openCV with cuda. I know now that I have to install another version of openCV (since the default version of openCV in ROS kinetic does not include cuda modules) and then call ...
ipgvl
1
vote
2
answers
287
views
OpenCV camera rvec tvec to ROS world pose
I'm detecting Aruco tags using the OpenCV bridge and I have tvec and rvec returned with the tag pose related to the camera using OpenCV axis notations. I would like convert them to a ROS pose related ...
veilkrand
0
votes
1
answer
9
views
Image overlay with transparency (sensors_msg/Image) on mapviz
Hi everyone,
I've written a simple node which reads in a png file with transparency and publishes it to a certain topic. The topic is then subscribed by mapviz to display the image as an overlay. ...
rwong
0
votes
2
answers
17
views
camera_calibration opens gui window but freezes
I'm trying to run the camera_calibration node. I run this command:
...
martinakos
0
votes
1
answer
13
views
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/...
Mikhail K.
0
votes
1
answer
10
views
[SOLVED] Cannot use OpenCV trackbar with vision_opencv?
Hi, so I'm making a video publisher that stores frame from webcam as OpenCV image to be HSV-filtered, eroded, and dilated then convert it to a ROS image to be published to a subscriber. The code is ...
adhipatiunus
0
votes
1
answer
11
views
Images from fisheye camera are displayed correctly with BGR8 encoding but not with MONO8
Hi,
I want to output grayscale images from a fisheye camera (FOV < 180 degree). I understand that ROS currently doesn't support fisheye distortion models. However, I see that if I use a BGR8 image ...
tuandl
0
votes
1
answer
25
views
sensor_msgs - Can't build tutorial project
I am trying to pass images as messages in a simple ROS project. I'm a complete beginner in ROS and robotics. The tutorial I'm trying to follow is here:
http://wiki.ros.org/cv_bridge/Tutorials/...
dharmaforone
0
votes
1
answer
1
view
Problem with OpenCV on Kinetic
I am finding a way to resolve OpenCV issue with ROS Kinetic. After trying using cvg_sim_gazebo package, the functionality is now ...
alfa_80
0
votes
1
answer
10
views
Using opencv tracking with ROS kinetic
Hey, i want to use the tracking packageof opencv3 contrib in my ROS package.
The tracking packagee seems to be installed correctly, i can find the tracker.cpp in my opencv folder and also use other ...
VAVROS
0
votes
2
answers
5
views
Install opencv_contrib Tracking package
Hey there I simply want to use the tracking package of the opencv3 contrib package in my ros kinetic.
I figured already out that in particular the tracking package is not contained in one of the ...
Markus
0
votes
1
answer
3
views
link to opencv2 in kinetic
Hello! I am using ROS Kinetic on Ubuntu 16.04 Xenial 64bit. I have installed both opencv2 (by libopencv-dev) and opencv3 (by ros-kinetic-opencv3). A project of mine depends on cv_bridge, the problem ...
mikegao88
0
votes
1
answer
22
views
Kinetic error: opencv2/core/core.hpp No such file or directory
I am working with ROS kinetic on ubuntu 16.04
after a system update with Software-Updater i get an error while catkin_make-ing.
worked like a charm before.
...
Stoerakustik
0
votes
1
answer
2
views
opencv with ros kinetic
Hello,
I'm trying to use opencv with ros kinetic. I can run catkin build successfully, but when the method ...
bennypi
0
votes
1
answer
5
views
OpenCV3 - Install extra-modules ROS Kinetic
Hello everyone !
I know there's already a post about this subject : http://answers.ros.org/question/229246/how-to-build-opencv-extra-module-while-opencv-is-installed-with-ros/ but there's no answer.
...
matt27110
0
votes
1
answer
9
views
Opencv in ROS: fatal error: opencv3/opencv.hpp: No such file or directory compilation terminated
EDITED:
Hello,
I just started using opencv with ROS and I am trying to to write a program using the default opencv3, which comes with ROS Kinetic.
I have the following inclusions in my .cpp file:
<...
patrchri
0
votes
1
answer
51
views
Having trouble using CUDA enabled OpenCV with kinetic
Hello everyone.
I started a new install of ROS Kinetic, and I was hoping to use a few CUDA features from OpenCV. I have successfully compiled and tested CUDA and OpenCV (which is installed in /usr/...
daniel_dsouza
0
votes
1
answer
20
views
Add OpenCV window as panel to RViz
The kinect_tracking node finds a specific point inside the picture and paints it into each frame. I do create the Window with openCV like:
...
user23fj239