OpenCV (Open Source Computer Vision Library)

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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 ...
0
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1answer
22 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 ...
0
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1answer
26 views

sudo ./server command not executing

I'm trying to implement opencv in a distributed system and use my system as a server but when i execute the executable server file created by my makefile the following error pops up. OpenCV Error: ...
2
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2answers
45 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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0answers
32 views

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
37 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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13 views

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 ...
0
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1answer
65 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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1answer
796 views

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: ...
0
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1answer
294 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 ...
-1
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1answer
189 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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2answers
516 views

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 ...
0
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1answer
221 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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0answers
65 views

error in VLC compilation with opencv support

I am trying to compile VLC 2.0 on Ubuntu 13.10 with opencv support (v. 2.4.6.1). The compilation yields the following errors: COMPILE : libopencv_example_plugin_la-opencv_example.lo ...
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0answers
127 views

Can't boot Ubuntu 13.10 with OpenCV

I'm developing a c++ project on ubuntu 13.10. To compile this project i need OpenCV and Armadillo libraries. After the OpenCV installation (ver. 2.4.6) Ubuntu doesn't run. During the boot appears a ...
2
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0answers
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 ...
1
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1answer
41 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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0answers
153 views

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?
2
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1answer
616 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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116 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
3
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2answers
2k views

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 ...
0
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1answer
457 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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0answers
2k views

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" ...
2
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1answer
331 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
384 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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4answers
11k views

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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202 views

OpenGL doesn't work properly with QT when using OpenCV

I have installed OpenCV-2.3.1, and wanted to make the most of QT and openGL features when displaying images on windows. I have, as far as I know, all the mesa dependencies installed on my OS ubuntu ...
0
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1answer
134 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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0answers
68 views

Cleaning OpenCV installation

I installed OpenCV. First downloaded .tar library, extracted it, then did some cmake-gui and created folder \release\ where I executed make and in the end sudo make install. I just want to know that ...
0
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1answer
37 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
83 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 ...
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0answers
232 views

WebCam logitech C905 control in C++ and OpenCV

I am trying to change the the resolution of my webcam from inside my c++ program, which APIs can I use? where can I find copy/paste examples? My webcam works nicely under 12.10 and I can change the ...
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1answer
70 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
0
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1answer
1k views

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 ...
1
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1answer
814 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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1answer
496 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 ...
0
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1answer
147 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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2answers
699 views

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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1k views

OpenNi for Kinect on Ubuntu

I just installed OpenNI so that I can run my Kinect on Ubuntu and develop there as well and it seems to be working properly but when I run the samples it just says starting to run and then never moves ...
0
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1answer
285 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 ...
0
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1answer
366 views

Where are the OpenCV development libraries installed?

I need to install facedetect in matlab but it needs opencv library files and it has to be included during the compilation. So where is it? (In UbuntuStudio)!
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3answers
434 views

Trouble with aliases and opencv

I have an alias defined to compile an opencv program which goes like this alias gcv='g++ -I/usr/local/include/opencv -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_objdetect' Then I go on ...
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2answers
2k views

How do I import OpenCV library into python 3.1?

OpenCV 2.1 was first installed when I had the original python 2.6 and this works fine. However after getting the Python 3.1, it has no module called 'cv' after trying to import OpenCV. How to add ...
2
votes
1answer
6k views

Why can't my program find the libraries in “/usr/local/lib”?

I'm on Ubuntu 10.10, and I've just upgraded opencv to 2.4.2. The problem is that each time I open a new shell and try to compile and run, it compiles but doesn't run due to the following error: ...
1
vote
1answer
570 views

How do I install the latest python-opencv in 64-bit Ubuntu?

I heard that OpenCV supports only 32 bit Python. But my OS is Ubuntu 12.04 64 bit and it has Python 2.7 64 bit. How can I install latest OpenCV-Python bindings on this system for 32 bit Python? .
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1answer
715 views

Find the installation directory of OpenCv

I need to find the installation directory of OpenCv so that I can add it's path to PKG_CONFIG_PATH so I can run OpenCv programs the problem is I don't know where to look for it since I'm completely ...
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1answer
84 views

How to make package manager recognize libs that were compiled manually?

I had to compile OpenCV 2.4 on my machine. How to make applications installed from synaptic do not ask to install OpenCV 2.3 libs dependencies (since 2.4 is already installed in the system)?
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4answers
2k views

Using opencv on 12.04

I have some simple opencv files which I wanted to compile on 12.04. I have installed all the -dev packages They use: #include <cv.h> #include <highgui.h> at the top of the file. ...
1
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1answer
862 views

OpenCV will not install due to libgtk2.0-dev dependencies [duplicate]

I am trying to install OpenCV on Ubuntu 10.10 to use it with python. The problem that I am facing is related to installing gtk2.0-dev. I always get the following error The following packages have ...
0
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1answer
2k views

use kinect camera as a webcam in ubuntu

I have a python openCV program that uses a webcam to track an image target. I switched computers, but this new computer does not have a webcam. I hooked up my kinect, installed stome stuff from ...