Questions tagged [opencv]
OpenCV (Open Source Computer Vision) is a cross-platform library of programming functions for real time computer vision.
460
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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
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1
answer
271
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Save Depth Map Video
I have recently purchased an Orbbec Astra camera, which uses the same technology and produces the same style depth map as a Microsoft Kinect.
What would be the correct file format to save the depth ...
- 153
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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
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4
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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
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1
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Destination encoding for ros image to opencv image conversion
I am trying to create an OpenCV image from a ros image using this . I am subscribing to a topic /camera/depth/img_rect_color which is of the type ...
skr_robo
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Opencv no rule to make target
I am trying out the example to convert ros image to opencv image from here. I am creating a new package roscv_conv and using a zed camera with ros indigo, on a <...
skr_robo
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1
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py-faster-rcnn network detection runs on CPU through ROS callback function
Hi there,
I'm trying to test my trained py-faster-rcnn network for object detection through ROS. I have a node running with many similarities to demo.py. Included in the class are commands to execute ...
WillAndrew
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Ros-opencv after few computations cannot see the image
Hi ,
So i'm trying to detect lines with turtlebot via kinect rgb camera. Everything was working until i added cv2.HoughLinesP() i think it still works but image window comes up as menubar only :) ...
orhan
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1
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2k
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CompressedImage to an Image in a node
Update
Hey I have the following subscriber on Nvidia TX1 board running on an agricultural robot. we have the following issue with subscribing to Sensor_msgs::Compressed:
...
- 101
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Stereo Vision Using Compute Module: Pi camera synchronization
Good day,
I am currently working on an obstacle avoiding UAV using stereo vision to obtain depth maps. I noticed that the quadcopter would sometimes not steer to the correct direction.
I am using ...
- 732
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Image encoding problem
Hello
I have a cv::Mat of depth CV_8UC1 (that I know for sure it is this since it what the camera streams). In the camera driver I can do cv::imshow and display this CV_8UC1 image and I see it right:
...
apalomer
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source install + opencv source install
I'm installing ROS Indigo from source on Fedora 23 and I also have a source install of openCV 2.4.12.
After I compiled everything when I try to run rosrun rviz rviz
...
Maya
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1
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Which ROS version to use with opencv
Hi. I would like to use the feature detection library from opencv to detect an object and then navigate the mobile robot to the center of the object . I dont know only which version of ROS should ...
Astronaut
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1
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3
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I need help with an error when run an OpenCV program
I am sorry if my subject is not clear but I am not sure how to describe this problem.
Below is the error I receive when I try to run my node:
...
Thang Nguyen
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Opencv installation, usage with and without ROS
Hello,
I have OpenCV 2.4.8 which was installed along with ROS Indigo on an Ubuntu 14.04. My project requires use of OpenCV 2.4.9. I have limited understanding of how this installation works. I have ...
skr_robo
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1
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Can't visualize image in opencv. what is problem?
I tried to run ros opencv tutorial program: converting converting between ros image and opencv image using cv_bridge. but after i ran the command: rosrun opencv example input:=/camera/image_raw than ...
dinesh
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9
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Could not find a package configuration file provided by "opencv2"
I was following the Converting between ROS images and OpenCV images (Python) tutorial and i came across the following problem while running catkin_make. I am new to ros and i am still finding my way ...
spkulgod
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which version of Opencv should I use?
Hi everyone,
I'm a beginner in ROS. Currently, I'm trying to use a camera to locate and identify the color balls by the OpenCV package, but depend on my research I found that there has two version of ...
Zero
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1
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How to link opencv to ROS indigo (catkin) with CMake (ubuntu 14.04)?
Am so far not able to use cv_bridge. Am getting this compilation error
...
polar
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How to start using OpenCV and ROS
Hi
Im new in OpenCV and would like to learn using it with ROS fuerte. I am using Ubuntu 12 and 14 and ROS fuerte and Microsoft Kinect. Any good tutorial to start install OpenCV in ROS and start using ...
Astronaut
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3
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pcl library linking problem
Hi,
I am facing a linking problem between pcl and ROS. I am using Ubuntu 14.04 and QtCreator. I am trying to convert the laser data to OpenCV image, now I have the pointcoud2 so I need to convert it ...
horczech
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ROS indigo and opencv seems not to work correctly
I'm trying to check if I could use opencv with ROS Indigo and also with PCL 1.7, based on this tutorial here, and it seems there would open a window to show the Image, but nothing happens in my ...
soichirutk
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1
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Extract video from PointCloud2
I have a rosbag file with sensor_msgs/PointCloud2 data. I want to extract a video from these data. All the ROS tools I found is related to the extraction of video from an Image topic. Is it possible ...
rastaxe
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Which single board computer should I chose?
Hi ros community
I' m working with ros to make a robot which can go itself with image proccessing. I am using lots of hardware in this project and I used pcduino V3 until this time. But I want to ...
baseroguzhan
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1
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Problem of using Turtlebot to process image
Hi, everyone ! I'm doing image processing using turtlebot right now, and I have completed programming on VS Windows, it is going perfect, but when I transformed it to ROS, it just went wrong.
I am new ...
Henschel.X
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2
answers
296
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Real-time object classification for an indoor autonomous quad-rotor
I am designing an indoor autonomous drone. I am currently writing an object classification program in OpenCV for this purpose. My objects of interests for classification are: ceiling fans; AC units; ...
- 155
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Do all of the OpenCV functions work fine on ROS?
I decide to do some image processing on ROS, and first I did the same job on VS2013 with OpenCV2.4.9 on windows, I am wondering if it is true that almost every functions like cvCvtColor or every data ...
Henschel.X
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2
answers
143
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Suggestions on object types (features) to track from ARDrone 2 camera
UPDATE
I have aded 50 bounty for this question on the StackOverflow
I am trying to implement object tracking from the camera(just one camera, no Z info). Camera has 720*1280 resolution, but I ...
- 185
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Getting coordinates through comparing .pgm files using opencv
1 - Generated the .pgm files through gmapping using LIDAR data.
-- One with partial map
-- One with map of the whole area
Trying to:
2 - Use opencv to compare the maps
3 - To get the coordinates of ...
Avonic
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5
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cv::KalmanFilter not working [Solved]
I'm trying to use kalman filter in ROS with OpenCV library, but I'm getting error.
below is the error that I'm getting while compilation.
error: ‘KalmanFilter’ is not a member of ‘cv’
cv::KalmanFilter ...
PKumars
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1
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10
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why RGB and depth Image synchronization not working? [Solved]
why this works ? but not the bottom one?
...
PKumars
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1
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2
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How do the YAML Parameters relate to Pinhole-Model
I try to make sense of the YAML Matrixes below and so far know that
camera_matrix holds intrinsics
distortion_coefficient is ...
user23fj239
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1
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3
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Convert cv_bridge Image to cv::Mat image
I would like to have a pure OpenCV version cv::Mat of the Image on which I can do further modifications. I tried ...
user23fj239
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1
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2
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Book: Learning ROS for Robotics Programming; Chapter 5 homography.cpp:16:39: fatal error: opencv2/nonfree/nonfree.hpp: No such file or directory
Hello, I am studying the book for beginners to understand ROS. When I compile chapter 5 tutorials, I face this problem.
...
Abdul Mannan
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1
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Multiple static target position estimate
An aerial vehicle captures images of the ground, using a down facing camera, in order to detect some static ground targets. Using opencv I created a node that detects those targets and converts their ...
nvoltex
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Problems integrating OpenCV with ROS Indigo
I am trying to build a simple program to start working with OpenCV with ROS Indigo; however, whenever I try to build the code (catkin_make) the build fails and returns
" undefined reference to '...
Raiden
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image_geometry projectPixelTo3dRay World Coordinates
Good evening,
i have a problem and i need help as fast as possible. For a tracking program i try to subscribe from two image_rect_color + their ...
Gren8
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2
answers
2k
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Tracking objects from camera; PID controlling; Parrot AR Drone 2
I am working on a project where I should perform object tracking using the camera of Parrot AR Drone 2.0. So the main idea is, a drone should be able to identify a specified colour and then follow it ...
- 185
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Where's the install location of the ROS indigo's opencv
Hi, all,
My OS is ubuntu 14.04, I had installed ROS indigo (Desktop-Full), where's the install location of the ROS indigo's opencv ?
I coudn't find it in "/opt/ros/indigo/lib"
Could ...
Milton
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what is the first step of doing image processing with ROS?
hi i am beginner with image processing and want to start that with ROS but i dont know what is the first step ? for example should i first install OpenCV? or its not important ? and may be i should ...
fatima
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1
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How I can run contour_moments.cpp OpenCV example?
I don’t know how to run the file contour_moments.cpp that’s able in this github link: https://github.com/ros-perception/vision_opencv/blob/indigo/opencv_apps/src/node/contour_moments.cpp
I’m working ...
G212
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1
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Setting up Catkin Baxter Environment Error - INDIGO
Ubuntu 14.04.2 LTE
I'm trying to setup a workspace to simulate Baxter in gazebo with Ros Indigo. When I run catkin_make in my workspace i get the following error:
...
veyorokon
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1
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OpenCV in ROS indigo
Hi Ros users:
I have a script where I use OpenCV functions and ROS functions.
But I have a problem when I run this script.
Mi question is: What version of OpenCV have I to install to work with Ros ...
Alvaro Salcedo
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2
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ROS Answers SE migration: OpenCV imread
I was following these examples;
http://wiki.ros.org/action/login/image_transport/Tutorials/PublishingImages
More specifically, let's look at this piece of code:
...
acajic
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1
answer
5
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image_proc not working as expected
Hello everyone,
I'm trying to use image_proc to rectify my image, coming from a folder.
Here is my launch file:
...
Georacer
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1
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2
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How to use opencv-contrib modules in ROS Indigo?
I am using ROS Indigo on Ubuntu 14.04. I installed the OpenCV 3 for ROS with apt-get:
sudo apt-get install ros-indigo-opencv3
However, I would like to use modules ...
donald
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1
answer
855
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what's confidence level? and how can we use it for vehicle detection using OpenCV?
I'm working on project for the Autonomous vehicle, and i want to know what's confidence level means and how can we use confidence level for vehicle detection in OpenCV ?
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ROS example program doesn't work with the Laptop webcam
I have been trying to work with the example program for ROS - OpenCV integration. When I run the program, there is no progress. I am not getting any response. I dont have any external or USB webcam. I ...
karthik_puzzle
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Building Ros 2.0 without OpenCV?
I'd like to build Ros 2.0 without having to have OpenCV installed.
Is this possible / How would I do this?
Originally posted by Sam101 on ROS Answers with karma: 11 on 2015-09-11
Post score: 1
Sam101
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1
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Package for TLD algorithm in indigo
I found TLD algorithm package in github but it is for groovy. is there any indigo package for TLD algorithm or any similar object tracking algorithm ?
Originally posted by Kishore Kumar on ROS ...
Kishore Kumar