OpenCV (Open Source Computer Vision Library)

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How to uninstall OpenCV 2.4.9 completely from Ubuntu 14.04?

I want to integrate OpenCV with qt creator and for that OpenCV 3.0 is required. I have OpenCV 2.4.9 already installed and want to uninstall it completely as it is causing problems in some functions. ...
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1answer
26 views

Opencv commands are needed to be called as root using 'sudo', otherwise shows error

When I enter into my Opencv project directory and do the following command- sudo cmake . sudo make it generates make files without any error and the program runs successfully. But when I do cmake ...
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1answer
25 views

install opencv-2.4 in beagleboard zm rev c (12.04)

I'm running ubuntu-12.04-preinstalled-desktop-armhf+omap.img in my BBxm. I want to install opencv-2.4 for a software dependency, but apt-get install only gives me opencv-2.3. I want to avoid manual ...
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Unable to install Box2D package

If I try to run sudo apt-get install python-box2d I get this nonsensical error message: Reading package lists... Done Building dependency tree Reading state information... Done You might want ...
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1answer
81 views

uEye camera OpenCV on Ubuntu my code and cv::namedWindow and memcpy are not working together

I installed uEye sdk 4.40 on my Ubuntu 12.04 and I have also installed OpenCV 2.4.9. They are working as well as individually. I wrote some code on Eclipse, to get image from the camera and wanted to ...
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2k views

Installing OpenCV in Ubuntu 14.04 [duplicate]

I'm a novice and absolutely new to Ubuntu, although what I'm asking is pretty elaborate I'm sure there must be pretty more users like me wanting to install the latest stable version of OpenCV on my ...
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Flea2 Camera Firewire not detected in opencv ubuntu

I have researched so much to resolve this, but I haven't got a solid solution yet. I am using a Flea2 camera connected to laptop through the firewire port. The Coriander is abe to detect the camera, ...
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154 views

/usr/bin/ld: skipping incompatible .//libasmlibrary.so when searching for -lasmlibrary

I am using ubuntu 12.04. I am trying to build asmlibrary from this link https://github.com/greatyao/asmlibrary on my system . opencv2.4.9 is installed on my system. I am trying to run make command and ...
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211 views

cannot ccompile the basic opencv cpp program

I made the ~/.compile_opencv.sh as given https://help.ubuntu.com/community/OpenCV on this website and then I made this file opencvtest.cpp with the following contents . The image path is a valid path ...
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error adding symbols: DSO missing from command line

I am newbie to Ubuntu.i want to compile a project that uses opencv but it gives following error: cmake . && make /usr/bin/ld: ...
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Result of make command is /usr/bin/ld: cannot find -lcudart

I am newbie to Ubuntu and using Ubuntu 14.04 64-bit. I want to make a project that uses cuda and opencv I got the following error when running cmake . && make Linking CXX executable ...
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176 views

Using OpenCV with OpenGL

I want to use OpenCV with OpenGL. It says the library has no GPU support because it was compiled without any. Is there an OpenCV library compiled with OpenGL somewhere in the repositories? Or do I ...
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637 views

Cannot open 2 USB cameras simultaneously on VLC player Ubuntu 12.04

Cannot open 2 USB cameras simultaneously on VLC player Ubuntu 12.04 How I open a Camera: In terminal (text after the $ prompt = commands that I type): $ ls /dev/video* /dev/video0 /dev/video1 $ vlc ...
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Using camera in opencv

I want to make a robot and I should do live image processing.so I need to take video from somewhere from a camera (canon powershot A3100) and process it.note that taking video is live means that when ...
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243 views

“make” error when installing OpenCV

[ 38%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/convert.o In file included from /home/bomi/OpenCV/modules/core/src/precomp.hpp:55:0, from ...
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357 views

Ubuntu 14.04 openCL and ATI/Intel graphic

I'm wondering if following is possible : I have two graphics cards - ATI and Intel, and installed fglrx driver. In amdcccle I have enabled Intel card. I'm developing OpenCV application where I have ...
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1answer
1k views

Error while compiling OpenCV in Ubuntu 14.04

I followed the instructions for compiling opencv2.4.9 from Install OpenCV 2.4.9 in Ubuntu 14.04, 13.10 I am getting the following error during the build process. Can someone point out to me how to ...
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1answer
91 views

installed libopencv results in blackscreen after login

I am new to Ubuntu and set it up a few days ago. Now I wanted to install OpenCV since I need this for university matters. After turning off my pc I was able to log in but afterwards just a black ...
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1answer
821 views

OpenCV error in setting resolution with c910

I've been trying to use OpenCV to control my webcam (Logitech c910) through python. I 've managed to capture images through .read() but they are 640 x 480 and I haven't managed to set the resolution ...
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2answers
6k views

How to install opencv 2.9 for python?

I have been having the exact same problem as described in this post and someone in the answers suggested that you upgrade to opencv version 2.9. I was wondering how do that? I installed the version ...
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how to install opencv blobs in Ubuntu 13.10

I'm trying to install blobs package on Ubuntu 13.10. But I'm not able to install opencv blobs. I'm getting the error like from package from blobs.BlobResult import CBlobResult ImportError: No module ...
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1answer
972 views

Install opencv eclipse

I am using ubuntu 13.10 and I am trying to install opencv on eclipse. I am following this tutorial LINK I do not know where is my library. This what I obtain when I try to find the files. ...
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illegal short term buffer state detected

when I use VideoCapture of opencv, it returns this message: [h264 @ 0x11055a0] illegal short term buffer state detected. But the code seems to work fine and have the correct result. Could anyone tell ...
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543 views

OpenCV Build Error: “Cannot open options file specified with @”

I am having trouble installing OpenCV on my machine. I run Ubuntu 12.04. I have followed this guide: http://www.raben.com/book/export/html/3 in order to install OpenCV 2.4.3 on my linux machine. ...
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AttributeError: 'module' object has no attribute

I am trying to get the depth map of two stereo images. I have taken the code from http://docs.opencv.org/trunk/doc/py_tutorials/py_calib3d/py_depthmap/py_depthmap.html I get the following error: ...
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516 views

Error Ubuntu 13.10 blackscreen [duplicate]

I installed Ubuntu 13.10 in my PC recently, also installed Eclipse, Qt Creator, Blender and Synaptic (to download all the packages in order to work with OpenCV) everything went fine until i shut down ...
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530 views

couldn't load image in opencv(python)

I installed opencv & python in ubuntu12.04. I'm unable to load the image. I tried $ from cv2.cv import * which showed the error "from: can't read /var/mail/cv2.cv" How to solve this?
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Error when installing OpenCV 2.1

I want to install openCV in my ubuntu 12.04 but I get this following error. [ 45%] Building CXX object src/cxcore/CMakeFiles/cxcore_pch_dephelp.dir/cxcore_pch_dephelp.o In file included from ...
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1answer
238 views

Blank screen in Ubuntu 13.10 after login; missing opengl

I had aworking Ubuntu 13.10 on my laptop till yesterday when I installed OpenCV 2.4. It did not cause any immediate problem yesterday but when I turned on the power this morning, I did not get a ...
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1answer
1k views

Ubuntu 13.10 blank screen with cursor after installing libopencv-dev

After installing libopencv-dev from the Ubuntu repository, I get a blank screen with cursor after logging into a session (after restarting the computer). I think there were some Nvidia-related ...
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189 views

How to get older version of opencv

This fails: sudo apt-get -t=2.3.1 install libopencv Is there a way to figure put which command I have to type to get 2.3.1 running? The default on Ubuntu 13.04 is 2.4 Thanks
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How to control mouse cursor using c?

As in windows there is a function setCursorPos in windows.h for controlling cursor position. What is the way to do this in ubuntu?
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1answer
1k views

OpenCV install problems on Studio 12.04 - broken dependencies [duplicate]

Problem: I'm trying to install OpenCV (video analytics) and am following the Ubuntu OpenCV installation documentation. The provided script has a line which executed for some time, taking away more ...
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1answer
287 views

image viewer in ubuntu that can show the pixel coordinates and pixel value as well for current mouse location in the image

I am looking for any image viewer in ubuntu which can show the pixel coordinates and pixel value under current location of mouse other than gimp..... thanks for your help
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2answers
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How to install OpenCV without nVidia drivers

I have a laptop with on-board Intel graphics. I have been using OpenCV for years with this machine and I have managed to avoid manual compilation so far. But in Ubuntu 13.10, when I try to install ...
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577 views

OpenCV installation problem in ubuntu 13.04

I have downloaded opencv from github. I am following the installation instruction from here. Ubuntu 13.04 64bit system hangs when i run the following command (after 25% complete) make -j Additional ...
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Trying to compile Opencv C++ code getting some Reference error [closed]

do we have to give path for OpenCV in Ubuntu 13.04.If so Tell me that also ? This is code : #include "opencv2/opencv.hpp" #include "opencv2/video/video.hpp" #include "opencv2/highgui/highgui.hpp" ...
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652 views

Does the version of Opencv shipped with 12.04 support v4l2?

How can I tell whether or not the version of OpenCV shipped with Ubuntu 12.04 supports v4l2 devices? I have found a number of (oldish) pages that say OpenCV does support v4l2, but it's not clear to ...
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1answer
796 views

Install libopencv-dev 32bit on 12.04 64bit [duplicate]

I've already installed the 64bit version of the package libopencv-dev and want now to install the 32bit version. I tried the command: sudo apt-get install libopencv-dev:i386 but got the following ...
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2answers
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Installing opencv

I've downloaded opencv but unfortunately I've got no idea how to install it. All the pages I found online were only telling me how to download and install it directly from the console, not what to do ...
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194 views

compiled executable cannot run

cpp program. But now I cannot run it. It show that command not found. I compile it by; gcc `pkg-config --cflags opencv` OpenCV_ViolaJones.cpp -o OpenCV_ViolaJones `pkg-config --libs opencv` It's ...
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46 views

Problem regarding open cv graphing

I want to know that if i want to do graphing in open cv would i have to install seperate library for this purpose or it can be plotted using other ways.
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1answer
95 views

Python runs way faster while the machine is shutting down?

This morning when I was shutting my machine down from an overnight test of running openCV to display a data stream from one of my cameras, I noticed that my frame rates nearly doubled in the video ...
4
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1answer
101 views

What is the path of libraries (samples, docs) setted up from Software Center of Ubuntu 12.04?

I installed OpenCV and its DOC and Samples from software center but I cannot find the them at anywhere. What is the certain location for all these at Ubuntu12.04
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OpenCV program won't compile (Quantal)

I am trying to compile a simple program using OpenCV in Ubuntu Quantal. I have installed all the OpenCV packages available. My code is the following #include <stdio.h> #include ...
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2k views

Linking error when trying to compile on a shared drive

I am trying to compile OpenCV library on a shared drive on my system. I was able to configure and generate makefiles successfully by using these settings, but when i try to compile I get the following ...
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553 views

Are python bindings for OpenCV 2.4.3 available?

I have installed the Libraries and files for OpenCV 2.4.3. However, the Software Center lists just the python bindings for OpenCV2.3. Where do i get the python bindings for 2.4.3 ? How do i install it ...
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181 views

What is the purpose of configuration file?

I am trying to install opencv in my system by following this link. It says that after installing we need to do some configuration by opening /etc/ld.so.conf.d/opencv.conf and typing a particular ...
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Linker cannot find libcv

The package I am building on Precise instructs me to install OpenCV using synaptic to get libcv-dev libcvaux-dev and libhighgui-dev. So I opened up synaptic and checked the boxes and downloaded these ...
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356 views

Dependency problems installing eViacam on 12.04

I used eViacam in windows, but now I'm using (L)ubuntu 12.04, and I fail to install. I found a guide to install it on ubuntu 11.10, but I have unsolved dependencies. Error runing "sudo apt-get ...