I have just started out to learn opencv but facing many issues. i have installed opencv and linked it to visual studio 2013.
My first program which i copied from a video worked fine, which was
#include <cstdio>
#include <opencv2\opencv.hpp>
void main()
{
std::cout << "OpenCV Version: " << CV_VERSION << std::endl;
}
after this i created anew project and imported all the settings of the first project through import export settings option, but while compiling only it is showing many errors
#include <opencv/cv.h>
#include <opencv/highhui.h>
using namespace std;
using namespace cv;
int main(void)
{
Mat img = imread("C:/Users/shivamkumar07/Documents/Visual Studio 2013/Projects/ConsoleApplication2/shape.jpg");
imshow("inputfile", img);
img.release();
waitKey();
cvDestroyAllWindows();
return 0;
}
i am not able to understand why this is happening, please help me i am a beginner in this and not much tutorials are available on opencv 3.0.0
Thanks in advance!!
The first error is pretty clear, the compiler cannot find the file "opencv/cv.h" you included.
Try adding the correct folder to the include directories in the project settings.
After going through lots of stuff, i found out that i had not properly linked my opencv with this new project. That's why there were many undefined functions in my new project.
A better way to do this by using "Property sheet", once a property sheet is saved then it can be used in all of the new projects which you want.
steps to create Property Sheet
Right click on cpp file and add new items.
add property sheet here.
link opencv with your project by adding all the directories and lib files both in Release and Debug and save it by giving it some name.
steps to copy property sheet in new project
right click and click add existing item.
select the property sheet here and now the new project is linked with your opencv.
Thanks !
Clearly it has problem importing in that path. Try changing the path setting. Hope it helps.
Related
i m trying to use sfml in my project using visual studio 2019. Following sfml documentation to perform setup for visual studio i have performed all the action required
i have included include folder in c/c++/additional include directory and also provided path for lib folder in linker setting and also provided additional dependencies in linker/input
but
#include <iostream>
#include <SFML/Graphics.hpp>
int main()
{
std::cout << "i cant tolerate" << std::endl;
return 0;
}
this code shows above mentioned error ,
cannot open include file 'Graphics.hpp' no such file or directory
it seems like include path is not working
how can i solve this issue
i tried many times but got same result
if anyone facing the same problem please check the platform in the project/properties win32 worked for my particular problem
I have found two similar questions this and this .
But they both use opencv, and opencv indeed provide the corresponding lib. I don't use opencv, and my project is very simple, just hello world.I have changed project default configuration like this
except for these configurations, others all take defaults
I just want to test my project configuration，that works find for win32 debug and release. But not work for x64 debug and release, they all tell me LINK : fatal error LNK1104: cannot open file 'opencv_world341d.lib'
I indeed know my project does not use any opencv lib, but why they tell me I need to use opencv_world341d.lib
my code
#include<iostream>
using namespace std;
int main()
{
cout << "hello world" << endl;
}
Thanks for everyone who comments on the question. I have solved the problem, although this problem not relevant to OpenCV to much, but I think the solution to the problem may be helpful to others. When I build project, visual studio 2019 tell me cannot link opencv_world341d.lib, so I go to Project->Properties->Linker->Input->Additional Dependencies , and I found opencv_world341d.lib. So I need to remove it, but it's readonly. From this we know visual studio using settings file (Microsoft.cpp..users.props) to control global settings including Global search path. These files are located at $(USERPROFILE)\appdata\local\microsoft\msbuild\v4.0 directory. Then I reedit Microsoft.cpp.<Platform>.users.props, delete opencv_world341d.lib, reboot visual studio, problem solved.
I am trying to run OpenCV on Visual Studios 2017. I built the libraries and bin with CMake, so far it is working good. However, when I try to run the code it says this:
This is the error code message that shows when I launch the "local windows debugger":
For some reason, it says that it can't find the DLL. I already assign the Aditional Dependencies in properties also I linked the "Included Directories" and "Included Libraries" to openCV in Visual Studios, the project is set to run in x64, and there are no errors on the programming it's just that error of DLL that shows.
The DLL can be found in a separate folder made by the compiler in a bin folder. However, it still says it can't be found.
This is the locations of the DLL files:
Is there a solution for this?
I tried to add pictures I'm new in the forum it doesn't let me post them yet. I am not sure if the ones I upload will show.
This is the code I tried to run and bring the error message. The same happen with any other code.
I will add more images that may help to understand what I did so far and thanks in advance for the help.
This are the Visual Studios C/C++ Directories:
This is the Linked section in Visual Studios properties:
This is the environment PATH from Environment Variables:
This is all I did so far in the process to install OpenCV in Visual Studios.
#include "stdafx.h"
#include <iostream>
#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
int main() {
cv::Mat image;
std::cout << "This image is" << image.rows << "X" << image.cols << std::endl;
image = cv::imread("puppy.bmp");
if (image.empty()) {
}
cv::Mat result;
cv::flip(image, result, 1);
cv::waitKey(0);
return 0;
}
For me, restart to Visual Studio solved the problem, I guess that's because when I added the OpenCV to Environment Variable the Visual Studio was open
Just copy opencv_world341d.dll to the x64 debug folder, and run it.
I also restart my computer after I add it to PATH. So the solution is just restart your computer when you add to PATH for the first time
I've also faced this issue and solved it simply by adding the OpenCV bin path to the environment variable.
This is not a new question but the solutions haven't worked for me. I want to read dicom files using C++. I have 32-bit Windows PC with VS 2013 community edition.
This post and other answers therein suggested using DCMTK. I installed DCMTK (using CMake followed by VS) and configured it for use with VS using guidelines and links provided in this post. Then I wrote a simple test program and tried to compile it:
#include "stdafx.h"
#include "dcmtk\dcmdata\dctk.h"
#include "dcmtk\config\osconfig.h"
#include "dcmtk\dcmimgle\dcmimage.h"
#include <iostream>
using namespace std;
int main()
{
DicomImage *image = new DicomImage("test.dcm");
if (image != NULL)
{
if (image->getStatus() == EIS_Normal)
{
if (image->isMonochrome())
{
image->setMinMaxWindow();
Uint8 *pixelData = (Uint8 *)(image->getOutputData(8 /* bits */));
if (pixelData != NULL)
{
/* do something useful with the pixel data */
}
}
}
else
cerr << "Error: cannot load DICOM image (" << DicomImage::getString(image->getStatus()) << ")" << endl;
}
delete image;
return 0;
}
Upon compilation, it gives the following error:
dcmdata.lib(dcuid.obj) : error LNK2019: unresolved external symbol _Netbios#4 referenced in function "unsigned char * __cdecl getMACAddress(unsigned char * const)" (?getMACAddress##YAPAEQAE#Z)
This error seems to be common but none of the following solutions work for me:
FAQ#27 and another post of DCMTK forum: It suggests using particular order of lib files to be included. My order of including files is as follows (I tried the reverse order as well but it didn't work):
All of this doesn't work. In fact, I'm not sure which lib files are supposed to be included? How to decide that?
I've also included "C:\Program Files\DCMTK\lib" under additional library directories and "C:\Program Files\DCMTK\include" under additional include directories in project properties.
Another similar question at stackoverflow has not been answered. Comments suggest to re-run CMake by disabling DCMTK_OVERWRITE_WIN32_COMPILER_FLAGS. I didn't do it because the DCMTK help page says don't disable this unless you really know what you're doing.
Can someone please guide?
The NetBios function resides in NETAPI32.LIB, so you can try moving NetAPI32.lib (which is in your list) to the top of that list.
Not sure which version of the DCMTK you use, but for the current development snapshot you need the following standard libraries (on Windows): "ws2_32 netapi32 wsock32". This information can be found in DCMTK's CMake files. By the way, you don't seem to use CMake for your project, right?
I think you misspelled dcmsign.lib as dcmsig.lib.
If changing that doesn't fix it, I would suggest the following order based on the support page that you linked to:
NetAPI32.lib
WSock32.lib
ofstd.lib
oflog.lib
dcmdata.lib
dcmsign.lib
dcmnet.lib
dcmsr.lib
dcmqrdb.lib
dcmtls.lib
dcmwlm.lib
dcmimgle.lib
dcmpstat.lib
dcmjpls.lib
dcmjpeg.lib
dcmimage.lib
ijg16.lib
ijg12.lib
ijg8.lib
I think that in this list, each library has to come after all the libraries that it depends on.
check your .lib and vs platform if the same ,such lib for x64, then your vs platform must be x64.
I had the same error. You can go to project properties-> linker -> input -> Additional Dependencies-> Edit -> add these two libraries-( netapi32.lib,wsock32.lib) before all other libraries . This solved the error for me .
I have QT 5.1.1 installed on my machine, but I'm having some troubles using it. I'm trying to run the following simple program that requires QT:
//Playing Video
#include "cv.h"
#include "opencv2\objdetect\objdetect.hpp"
#include "opencv2\core\core.hpp"
#include "opencv2\highgui\highgui.hpp"
#include "opencv2\features2d\features2d.hpp"
#include "opencv2\calib3d\calib3d.hpp"
#include "opencv2\nonfree\nonfree.hpp"
#include "highgui.h"
#include <openbr\openbr_plugin.h>
using namespace cv;
static void printTemplate(const br::Template &t)
{
const QPoint firstEye = t.file.get<QPoint>("Affine_0");
const QPoint secondEye = t.file.get<QPoint>("Affine_1");
printf("%s eyes: (%d, %d) (%d, %d)\n", qPrintable(t.file.fileName()), firstEye.x(), firstEye.y(), secondEye.x(), secondEye.y());
}
int main(int argc, char *argv[])
{
br::Context::initialize(argc, argv);
// Retrieve classes for enrolling and comparing templates using the FaceRecognition algorithm
QSharedPointer<br::Transform> transform = br::Transform::fromAlgorithm("FaceRecognition");
QSharedPointer<br::Distance> distance = br::Distance::fromAlgorithm("FaceRecognition");
// Initialize templates
br::Template queryA("../data/MEDS/img/S354-01-t10_01.jpg");
br::Template queryB("../data/MEDS/img/S382-08-t10_01.jpg");
br::Template target("../data/MEDS/img/S354-02-t10_01.jpg");
// Enroll templates
queryA >> *transform;
queryB >> *transform;
target >> *transform;
printTemplate(queryA);
printTemplate(queryB);
printTemplate(target);
// Compare templates
float comparisonA = distance->compare(target, queryA);
float comparisonB = distance->compare(target, queryB);
// Scores range from 0 to 1 and represent match probability
printf("Genuine match score: %.3f\n", comparisonA);
printf("Impostor match score: %.3f\n", comparisonB);
br::Context::finalize();
return 0;
}
It also requires OpenCV 2.4.6.1 and OpenBR, but that's not the problem.
All the definitions (variables and functions) in the above code that are related to QT are undefined. I've tried to find the relevant h files in QT folder and to include them, but that did not succeed since I couldn't fine qtcore.h (but a different file named qtcore with lot's of includes that I don't now how to use). I've tried to add QT "include" directory under "additional include directories" in the project properties but that didn't work either. I've also tried to add QT "lib" folder under "additional library directories" but that also did not work.
Basically, I tried everything I could think of. Can someone please explain how to I use those QT definitions? I'm really stuck and I could use any help given.
Thanks,
Gil.
(Optional) Update to Qt 5.2.
Start Qt Creator.
Create a new Qt Widgets Application project. You can give the class/files random names, it doesn't matter. Uncheck the "generate form" option, as you don't need any forms.
Remove all the files other than main.cpp from the project. You do this by right-clicking on them in the project tree on the left and choosing Remove File.
Copy-paste your code into main cpp. Make sure you completely replace main.cpp's contents, the default contents shouldn't be there anymore.
Add the opencv library to the project. Right-click on the project's root, select "Add Library", and go from there.
Re-run qmake by right-clicking on the project root and selecting "Run qmake".
Build and run the project by pressing Ctrl-R (Cmd-R on mac).
Qt uses a (non-standard) custom toolchain that has to run before the Qt-dependent code can be compiled. I've never tried using Qt outside of QtCreator, but if you really need Qt I'd suggest you use the QtCreator IDE; if you're not using it already of course. It's a very decent IDE, even for non-Qt projects.
Also, if you haven't done so already, make sure the Qt SDK is installed; the headers alone are not enough. QtCreator by itself is also not enough, you'll need the SDK. If you don't feel like doing so, my suggestion would be to look at Poco. It's not a 1:1 replacement for Qt, but a very mature framework nevertheless.