Questions tagged [opencv2]
The opencv2 tag has no usage guidance.
74
questions
0
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1
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13
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opencv2/opencv.hpp no such file or directory
Hi,
I am on jetson using ROS melodic version. I am receiving no such file or directory for opencv2/opencv.hpp. I know I am not linking it properly but not sure how to fix it.
...
Flash
0
votes
1
answer
5
views
How do I use SIFT in ROS project
How to set everything in my project, so that I can use some existing solution for SIFT?
Originally posted by Kri on ROS Answers with karma: 41 on 2018-03-15
Post score: 0
Kri
0
votes
1
answer
1
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ros kinetic opencv2 dependency not found
i went to ~/catkin_ws(my workspace) and then to src folder and created my package with the command
catkin_create_pkg face sensor_msgs opencv2 cv_bridge rospy std_msgs
The package was successfully ...
HHG
0
votes
1
answer
4
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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
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find position of object in a bag
Hi guys,
I need to find(estimate) the 3D position of the 'people in the scene' -- (this is in the bag file) with respect to the camera.
My code is : (I didn't write it)
...
Rai
0
votes
1
answer
3
views
maybe error of cv_bridge (on kinect)
I made my ImageView program for kinect.
I can compile this program. But when I excute it, it happen core dump like this.
...
sora
0
votes
1
answer
9
views
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
0
votes
1
answer
1
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Linking opencv with ROS using cmake issue
Am getting this compilation error
../devel/lib/libXY.so: undefined
reference to `cv::calcOpticalFlowPyrLK
In my CMake
...
polar
0
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1
answer
1
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Problem with rtabmap_ros and nonfree OpenCV
Hello,
I am trying to use rtabmap_ros with SIFT and SURF. I've installed nonfree OpenCV and can find the folder in /usr/include/opencv2. For some reason though whenever I run rtabmap_ros I get the ...
Icehawk101
0
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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
0
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1
answer
2
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error opencv2/imgcodecs.hpp
trying to get ros working..
im trying this tutorial
now it crashs with following error:
error: opencv2/imgcodecs.hpp: No such file or directory
pi@raspberrypi ~/ros_catkin_ws $ cd /home/pi/...
g.sart
0
votes
1
answer
2
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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 ...
jossy
0
votes
1
answer
7
views
Publish depth image CV_32F using cv_bridge
Hi!
Working environment:
Kubuntu 14.04 LTS
ROS Indigo (up-to-date, full desktop install)
OpenCV 2.4.8 (default from the repos)
I have a PMD nano here and managed to get it up and running using the ...
rbaleksandar
0
votes
1
answer
1
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Subscriber callback function not called when trying to capture data using Kinect [Solved]
This is my current code. It's a node, and I use rosrun to execute/run it.
...
nemesis
0
votes
1
answer
2
views
How do I use SURF in ROS
Hi there,
I was trying to migrate a code that uses SURF from cpp to a kind of ROS cpp. But when i think that the compiler almost done it, it shows me an error after linking the executable.
Here is my ...
erivera1802
0
votes
1
answer
34
views
Working with cv_bridge and OpenCV correctly
Hello, I am struggling to use cv_bridge correctly. Do I have to convert the cv_bridge to a cv::Mat, before I can use OpenCV's functions?
My situation is the following: I wrote a simple OpenCV ...
soulfutterer
0
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1
answer
4
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cant find nonfree module opencv
anyone know where i can download nonfree module for opencv 2.4.8
Originally posted by dmngu9 on ROS Answers with karma: 150 on 2015-05-16
Post score: 0
dmngu9
0
votes
1
answer
1
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ros openni and opencv
i am making a human following robot using kinect. My plan is to use skeleton tracking to make the robot follow and using shirt color to identify the target.
I wonder how could i implement openni and ...
dmngu9
0
votes
1
answer
13
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ImportError: cannot import name CvBridge
Hello,
I am trying to use the cv_bridge package to convert an Image topic to opencv format on Indigo. I am using the code from the cv_bridge tutorial, and I added cv_bridge to my package manifest as ...
HITE
0
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1
answer
2
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How do I get a rosbridge image message into OpenCV (C++ or python)
I have several "robots" running rosbridge servers on raspberry pis and publishing low frame rate images. On a desktop computer, I need to be able to open a websocket to one of the robots ...
JWest
0
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1
answer
2
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Help in making node with OpenCV/cv_bridge and ROS Indigo
Greetings,
Running ROS Indigo, Ubuntu 14.04 and catkin_simple. My system has downloaded:
<...
Juan
0
votes
1
answer
1
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How to use C in ROS Or Create Own ROS Package for Existing Code
Hello Everyone,
I stuck in one problem, I have done lots of work in different lets say C and Matlab, I can convert Matlab program to C. The main problem is How to create Own ROS package such that it ...
KDROS
0
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1
answer
1
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How to create ROS package for Existing C code
I have piece of code in C files, I want to integrate it with ROS. What is the procedure to create ROS package for existing C code. Tell me the procedure and link for this.
Originally posted by Kd on ...
Kd
0
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1
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9
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Is it possible to convert depth messages as Ipl image using CvBridge
I could convert RGB messages in to picture but says that the "[32FC1] is not a color format. but [mono8] is. The conversion does not make sense". Is there anything else i should be doing?
my ...
shravan
0
votes
2
answers
3
views
How to extract depth data from rosbags(contains depth and RGB data) as picture frames
I have a Bagfile containing Raw depth and RGB data. I converted the RGB data into images using the tutorial
http://wiki.ros.org/rosbag/Tutorials/Exporting%20image%20and%20video%20data
But when I used ...
shravan
0
votes
1
answer
1
view
Getting clear kinect depth data
I am using ros node and getting topic with
sub = nh.subscribe("/camera/depth/image", 1, &Subscribe_Depth::callback, this);
and convert to opencv
<...
Aylin COŞKUN
0
votes
2
answers
1
view
Source Files failing to Build (C++ image subscriber tutorial)
Hi,
I'm new to ROS and have recently completed all of the tutorials in the tutorials section. I'm currently trying to get a C++ image subscriber working with our TurtleBot and I'm using the tutorial ...
ronpaul
0
votes
1
answer
2
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How to save subscribed image in any location
Hello Everyone, I am using OpenCV 2.9 and ROS Hydro.
i used this Publisher for publish image and used Subscriber for subscribing images. I am able to show that image but how to save it in computer??
I ...
KDROS
0
votes
2
answers
15
views
Filling sensor_msgs/Image with uint8_t buffer array
So I'm working on making a camera driver, and the data struct contains the frame data such as the height and width, and uint8_t leftData and uint8_t rightData pointers. Ive been trying to see which ...
l0g1x
0
votes
1
answer
1
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ROS hydro opencv2 linking error during 'catkin_make'
I have little problem with my ROS hydro distro. I need to use it for one project so can't change to Indiko.
Problem is that I have used catkin_create_pkg packname ...
Greave
0
votes
1
answer
1
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How do I Install OpenCV2
I'm trying to get image_transport to work, but when I tried both roscreate-pkg and catkin_create_kpg, I always get the error along the lines of "the dependency opencv2 is missing". I used ...
K. Zeng
0
votes
1
answer
2
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build errors when trying to use CVbridge with ROS Hydro
I'm trying to follow this tutorial - http://wiki.ros.org/cv_bridge/Tutorials/UsingCvBridgeToConvertBetweenROSImagesAndOpenCVImages
to stream images to a node.
After I added the node ...
voladoddi
0
votes
1
answer
4
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vision_opencv can't be found by ROS but it's installed
I was trying to make a package using the catkin_create_pkg but later it gives me an error for a package I have.
My command was:
...
Metalzero2
0
votes
1
answer
2
views
Streaming RGB with asus and using houghlines algorithm
Im currently using Ubuntu and running on ROS groovy.
My intention is to live stream RGB images from Asus Xtion pro and run the houghlines transform algorithm from opencv. I created my own package and ...
Azl
0
votes
1
answer
2
views
object detection
I have a bit of an interesting question for you. I have been experimenting with Opencv for a while and would like to add so vision applications to my robot, especially object detection. However I ...
Massbuilder
0
votes
2
answers
1
view
add opencv to indigo
The Opencv packages aren't built in the ROS Indigo anymore. So what should I do if I want to add opencv2?
Originally posted by hsoltani on ROS Answers with karma: 70 on 2014-07-07
Post score: 4
hsoltani
0
votes
2
answers
3
views
How to break and come of the for loop?
Hello guys !
I am working on Morse and ROS- Hydro version. I want to break and come out of the for loop when my flag is set to 1 ( and this flag is set in opencv part)
once the flag is set, it should ...
jashanvir
0
votes
1
answer
1
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Handling two nodes
Hello guys !
I have created two nodes In my first node pilot, I am trying to make the quadrotor scan the whole room until it finds a color box and when it finds the color box i stopped my quadrotor ...
jashanvir
0
votes
1
answer
11
views
Could a node can be stoped by another node?
Hello guys !
I want to stop a node, once its published message is subscribe by another node.
For example
Node 1(publisher)
...
jashanvir
0
votes
1
answer
1
view
use custom built opencv along with cv_bridge
After updating to Hydro, the method mentioned in this answer does not work anymore, where I have to depend on cv_bridge to transfer sensor_msgs::Image to cv::Mat. The cmake will strike a warning:
...
K Chen
0
votes
1
answer
1
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Depend on OpenCV in Hydro
With this commit in rosdep key that, now from Hydro there are at least 2 ROS ways to depend on OpenCV; via ROS 3rd package "...
- 4,492
0
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1
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1
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Segmentation Fault (core dump)
I am working on ROS and Opencv. I am able to run the code but after some times the code stops and show the error Segmentation Fault (Core Dumped). The following is the code in which a quadrotor is ...
jashanvir
0
votes
1
answer
1
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Failed to process package 'opencv2'
Dear All,
I am trying to install ROS hydro to mac os x 10.9.3 mavericks using desktop-install configuration. I am following the instructions of Homebrew.
Package dependences were resolved successfully....
lockandfire
0
votes
1
answer
1
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how to do opencv haartraining with opencv from ROS?
I am new to opencv haartraining and really need some help. I want to train my own haar classifier so I followed some step by step tutorials:
but I am stuck because I can't find the haartraining folder ...
Pollon
0
votes
1
answer
1
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opencv and hydro
I have been trying to run opencv on hydro but none of the tutorials work .. I have checked and my camera is working but output not shown in ros ... help pls
Thanks in advance
And kindly provide lonk ...
deepak.shankar94
0
votes
1
answer
1
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Cannot create package with opencv2 dependency using ROS Groovy
I am starting the Image_Transport tutorials and when I try to create a package with the stated dependencies I am getting the following error:
...
Pedro_85
0
votes
2
answers
1
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Hector_slam install fails; missing dependency opencv2
I'm doing an install on my BeagleBone and I get the following error:
Unable to locate package ros-groovy-opencv2
This indicates the binary is not available for the ...
TJump
0
votes
1
answer
2
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How to manually build OpenCV to work with ROS?
Since ROS doesn't have binary package for ARM, I cannot use "apt-get install ros-groovy-opencv2" to download and install OpenCV libraries for ROS ("E: Unable to locate package" ...
AdrianPeng
0
votes
1
answer
1
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opencv undefined reference problem
I am trying to build learning_image_transport from image_transport tutorial on Gumstix Overo which has ros groovy running on linaro.
However, one of dependencies of learning_image_transport -- opencv2 ...
AdrianPeng
0
votes
2
answers
2
views
OpenCV CMake Error
I have been using OpenCV without issue for months, but today when I catkin_make my workspace I now get the error:
-- +++ processing catkin package: 'clam_vision'
-- ==> add_subdirectory(...
Dave Coleman