All Questions
Tagged with opencv vision-opencv
18 questions
0
votes
1
answer
56
views
CMake detects intended OpenCV+CUDA, but runtime does not use intended OpenCV version
CMakeLists.txt contains
...
MrOCW
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
3
views
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
0
votes
1
answer
20
views
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
0
votes
1
answer
6
views
How to use a sdk (non-ros header/lib/binaries) in ros package?
I am trying to use a camera sdk to write a camera stream publisher in ros.
It's not a uvc camera, so I cannot use usb_cam or other similar nodes to access the camera stream.
I've already had the ...
fromandto
0
votes
1
answer
25
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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
Is it possible to merge multiple Kinect streams using vision_opencv?
Recently it came to my attention that in the later ROS versions much of the complex image processing/handling has been offloaded to other sources such as OpenCV. The camera_pose_calibration package ...
Athoesen
0
votes
2
answers
8
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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
0
votes
1
answer
1
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libopencv2.3-dev conflict Ubuntu 11.10 32-bit
I'm just wondering when could the problem be fixed?
I'm running a 32-bit Ubuntu 11.10, and the installation of ros-electric-desktop-full always ends up with the following error.
xxx@ubuntu:~$ sudo apt-...
MichaelHsu170
0
votes
1
answer
6
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Unmet dependencies in ros-electric-desktop-full installation
I come up with the following error while installing ros-electric-desktop-full:
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using ...
esha_umn
0
votes
1
answer
28
views
ros with open cv
im trying to create a ros package with an open cv program , but while doing a rosmake command i get an error
error while loading shared libraries: libcv_bridge.so: cannot open shared object file: No ...
vivek
0
votes
1
answer
3
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Solve conflict between Ubuntu libcv2.1 and ROS libopencv2.3
It looks like a recent update to OpenCV in ROS electric (as a system-wide package pulled in by ros-electric-vision-opencv) causes a conflict with the default Ubuntu library libcv2.1 (+libcvaux2.1 ...
AHornung
0
votes
1
answer
2
views
TypeError: <unknown> is not a numpy array in pi_head_tracking_tutorial
I am asking and answering my own question here to help a few people who have run into a snag when trying my pi_head_tracking_tutorial when running Diamondback. This tutorial uses the Python OpenCV ...
Pi Robot
0
votes
3
answers
13
views
Speeding up OpenCV on ARM?
Hi all,
I'm working with OpenCV on a Gumstix, and it is incredibly slow. For instance, running the "GoodFeaturesToTrack" function in a node runs at 1.5Hz, and requires 85% processor ...
Bradley Powers
0
votes
1
answer
13
views
No accelerated colorspace conversion found
When i try to run some custom node to process some .avi video i have this error : i guess this error is related to opencv , i have tried all the sloutions , even recompiled vision_opencv with FFMPEG ...
rajat
0
votes
1
answer
6
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How to use very latest OpenCV version in ROS?
I am trying to use the very latest version of OpenCV in ROS because I want to integrate a critical bugfix from OpenCV. From what I read OpenCV is integrated by some 'magic' mechanism. Is it simply ...
Julius
0
votes
1
answer
5
views
OpenCV camshift.py sample broken after Diamondback upgrade
Hello OpenCV + ROS users,
I will submit a ticket for this but I'm wondering if anyone has a quick fix in the meantime. I was using the camshift.py OpenCV Python sample successfully under Cturtle. ...
Pi Robot
0
votes
1
answer
66
views
YUYV/YUV422 in image_transport
Most of USB webcams used in hobby robotics support YUYV coding natively. Currently both OpenCV and ROS by default convert this image to BGR format and this is not most efficient decicion for most ...
Tõnu Samuel