I installed OpenCV version 2.4.3 using Visual Sudio 10 as the IDE (on windows 7 64-bit).
The problem is that once I installed it and am running even a simple application like that of loading an image it is giving me an error
The program '[8120] pms1.exe: Native' has exited with code -1073741811 (0xc000000d)
I am getting the same error for any code that I am trying to run. I am not getting any build errors. Build is getting succeeded but when I run it it throws me this.
Note: a sample code which gave me the error
#include <opencv\cv.h>
#include <opencv\highgui.h>
using namespace cv;
int main()
{
Mat image;
VideoCapture cap;
cap.open(0);
namedWindow(“window”, 1);
while(1) {
cap>>image;
imshow(“window”, image);
waitKey(33);
}
return 0;
}
Make sure that your executable and the opencv dll files it calls are both 32-bit or 64-bit.
Most probably the capture interface failed to open device 0, so cap>>image; is probably causing the error. You just don't know it because you forgot to check the success of open():
VideoCapture cap;
cap.open(0);
if (!cap.isOpened())
{
// print error message and
// quit the application
}
Experiment to pass other values for open(), like -1 or 2.
Related
I found a below program in c++ on internet,
#include <opencv2/opencv.hpp>
using namespace cv;
int main(void) {
// Read image in GrayScale mode
Mat image = imread("emily.jpg", 0);
// Save grayscale image
imwrite("emilyGray.jpg", image);
// To display the image
imshow("Grayscale Image", image);
waitKey(0);
return 0;
}
Then I compiled the above program with the following,
g++ opencv1.cpp -o opencv1.exe -IC:\\opencv\\build\\install\\include -LC:\\opencv\\build\\install\\x64\\mingw\\lib -lopencv_calib3d452 -lopencv_core452 -lopencv_highgui452 -lopencv_imgcodecs452
After running opencv1.exe, theres no change, no image being created.
Note:- I am using mingw for compiling and my opencv is built with mingw and cmake.
Actually I did not set the path to opencv dlls after I built opencv using mingw32-make.
After setting C:\opencv\build\bin to PATH variable of environment variables I could see the output.
Regards
I have the following program, which is the same as this tutorial page for OpenCV 3.4.0. I am using Visual Studio 2017 Community on a 64-bit laptop with Windows 10 Enterprise 64-bit.
#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main( int argc, char** argv )
{
if( argc != 2)
{
cout <<" Usage: display_image ImageToLoadAndDisplay" << endl;
return -1;
}
Mat image;
image = imread(argv[1], IMREAD_COLOR); // Read the file
if( image.empty() ) // Check for invalid input
{
cout << "Could not open or find the image" << std::endl ;
return -1;
}
namedWindow( "Display window", WINDOW_AUTOSIZE ); // Create a window for display.
imshow( "Display window", image ); // Show our image inside it.
waitKey(0); // Wait for a keystroke in the window
return 0;
}
With the includes and linker directories and libraries set up for this project, the solution builds just fine. But when I run the program, I get the following error:
"The code execution cannot proceed because zlibd1.dll was not found. Reinstalling the program may fix this problem."
From my initial research, it's not necessarily coming from Visual Studio 2017. When I try to create a new project, I do not have the option to select "Win32 Console Application." The project this source code sits in is of type Windows Console Application under Visual C++, supporting .NET Framework 4.5.
What am I missing here?
Based on the tutorial, I should be using only the libraries and the dynamic link libraries OpenCV 3.4.0 provides. I remember at one point using NuGET to try to install OpenCV 3.4.0 again, as explained here, when I was trying to solve the compiler error regarding fopen from a file within OpenCV 3.4.0 itself.
Okay, apparently it was a problem regarding my system path. It was not set right, Before, what I had was the path variable set to the following:
%OPENCV_DIR%\lib
%OPENCV_DIR%\bin
with $(OPENCV_DIR) being just the build directory of OpenCV 3.4.0.
But the directories there do not exist, and hence the libraries couldn't be found. So, I replaced them with this:
%OPENCV_DIR%\x64\vc15\bin
%OPENCV_DIR%\x64\vc15\lib
and the program now runs. What was I thinking back there?
Either way, important lesson to note: When you are getting a popup message saying the program cannot be opened because a library is missing, and is part of OpenCV 3.4.0, be sure that your system path in the Windows 10 System Advanced Settings is an OpenCV directory that exists.
This package has a problem to run under debug and result in zlibd1.dll problem. Switch to release if you can or use different nuget package.
I am working with OpenCV version 3.2.0 in Visual Studio 2015 and have been able to access my webcam until all of a sudden when I was working on it this morning. I can't figure out where this problem is coming from. I now get:
It doesn't throw any errors but it also doesn't show any input through the webcam
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
#include <iostream>
using namespace std;
using namespace cv;
int main(int argc, char** argv)
{
VideoCapture cap;
cap.open(0);
if (!cap.isOpened())
{
printf("--(!)Error opening video capture\n");
return -3;
}
Mat image;
namedWindow("Image", CV_WINDOW_AUTOSIZE);
while (1)
{
cap.read(image);
imshow("Image", image);
waitKey(30);
}
return 0;
}
Has anyone encountered this error before?
Edit:
Things I have looked at:
My webcams that I have work in things like Google Hangouts so I don't think it's a webcam issue.
Also, I uninstalled Visual Studio 2015 and installed Visual Studio 2017 to see if reinstalling would work and still get the same results.
Edit:
I am getting the error <information not available, no symboles loaded for opencv_world320d.dll> when I create a new VideoCapture object. I am pretty sure I have everything included correctly.
Configuration Properties -> C/C++ -> Additional Include Directories:
$(OPENCV_BUILD)\include
Configuration Properties -> Linker -> General:
$(OPENCV_BUILD)\x64\vc14\lib
Configuration Properties -> Linker -> Input:
opencv_world320d.lib
I encountered the same problem after obtaining Opencv via compiling and building source using CMake. Then, I deleted them and installed Opencv from prebuilt binaries. I have run the code again and there was no problem.
As suggested by #michael scolfield, it was a problem with my antivirus blocking my webcam. I couldn't figure out how to exclude my Visual Studio directory so I just tried uninstalling it and it worked. It would be nice to have antivirus and have this working so I'll need to figure that out. But for temps this will work.
Im using eclipse with opencv and i have this simple project:
#include "opencv2/highgui/highgui.hpp"
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char** argv)
{
Mat im = imread(argc == 2 ? argv[1] : "lena.jpg", 1);
if (im.empty())
{
cout << "Cannot open image!" << endl;
return -1;
}
imshow("image", im);
waitKey(0);
return 0;
}
It apears to be correct acording to eclipse and it compiles just fine. But if i try to run it on debug mode from eclipse nothing happend and if i try to execute the .exe i get this error:
EDIT: These images are in spanish, but the error is exactly the same that the one in this post: opencv 2.4 error in windows 7 64 bit
I am runing it on a virtual machine with windows 7 x86.
PS: Sry for my english!
There's a chance that when Eclipse runs your application it looks for lena.jpg in a directory where this file is not present.
Make sure you put the JPG in the same folder as your source files and also in the same folder as the .exe.
Your code seems legit, and this problem shouldn't be happening. The best way to figure out what's really going on is to use the debugger and find out which of the calls trigger the error.
I'm a starter in OpenCV. My programming environment is VC++ Express 2010 + OpenCV 2.4.2 + Win 7 64 bit.
I use purely 32bit configuration in my VC++ and Path.
I type in the following code:
#include "opencv2\highgui\highgui.hpp"
#include "opencv2\core\core.hpp"
using namespace cv;
int main(int argc, char** argv) {
char* imgPath = "logo.png";
Mat img = imread(imgPath);
namedWindow( "Example1", WINDOW_AUTOSIZE);
imshow("Example1", img);
waitKey(0);
return 0;
}
Then I compile and run. It does come up with a window (but without picture) but then gave me this (a runtime error?)
Unhandled exception at 0x770515de in Helloworld2.exe: Microsoft C++ exception: cv::Exception at memory location 0x001ef038..
Then I change the imread into cvLoadImage and it works without any errors.
Can someone tell me what's wrong?
I have tried the code you have given. It works perfectly fine with my installation of OpenCV.
However I am getting a warning at the line:
char* imgPath = "logo.png";
main.cpp:6:21: warning: deprecated conversion from string constant to 'char*' [-
Wwrite-strings]
Which i think is nothing serious to make the code crash, however it might be the problem in your case, as I am not using VC++ to compile.
What you can try to check if this is the issue is to replace imgPath with directly the string, so the code will now be like
Mat img = imread("logo.png");
I also got this issue, but I fixed it with the following. The point is using absolute path other than relative path, and change "\" with "/" in the file path.
#include <opencv2\core\core.hpp>
#include <opencv2\highgui\highgui.hpp>
int main() {
cv::Mat image = cv::imread("D:/projects/test/Debug/1.jpg");
if (image.empty()) {
return 0;
}
cv::namedWindow("my image");
cv::imshow("my image", image);
cv::waitKey(5000);
return 1;
}
The difference between cvLoadImage and imread can be seen on opencv documentation:
C++: Mat imread(const string& filename, int flags=1 )
and
C: CvMat* cvLoadImageM(const char* filename, int
iscolor=CV_LOAD_IMAGE_COLOR )
But there is an implicit conversion from const char * to string. As masad noted, this conversion is deprecated, so it is very compiler dependent.
As cvLoadImage works for you, it seems that you should change your code to something like this:
#include "opencv2\highgui\highgui.hpp"
#include "opencv2\core\core.hpp"
#include <string>
using namespace cv;
int main(int argc, char** argv) {
std::string imgPath("logo.png");
Mat img = imread(imgPath);
namedWindow( "Example1", WINDOW_AUTOSIZE);
imshow("Example1", img);
waitKey(0);
return 0;
}
There has been some problems with C++ interface in Visual Studio, but you may try to see if it works for you.
I had the same problem and I came across Installing OpenCV 2.4.3 in Visual C++ 2010 Express and it mentions to use the updated set of libraries *d.lib when adding dependencies for the Linker. I tried it and the C++ interface worked. Not sure if this is the case in general. I am using OpenCV 2.4 and Visual Studio 2010 on a 64 bit Windows machine.
I got the similar problem with you. When I use the imread function, the program crash with system error message:
opencv_debug.exe 中的 0x0036299f 处未处理的异常: 0xC0000005: 读取位置 0xcccccccc 时发生访问冲突
Then I change the imread into cvLoadImage and it works without any errors.
Finally, I fix the problem, it comes because I used VS2008 project with VS2010 compiled dll.
Here is my story.
Environment: VS2008 + opencv2.4.7
First, I just follow the link http://docs.opencv.org/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html, and compile the my test project.
But, When I run my test project, the system error dialog tells me that I lost MSVCP100D.dll MSVCR100D.dll. So I download the two dll, the dll lost problem is solved, but the problem is crash on run time.
Notice that ahead link, it says:
it means that, in opencv2.4.7, they only provide dlls which compiled in vs2010 or vs2012, not vs2008.
When I compiling vs2008 project with dlls which compiled by vs2010, I get the wired problem.
How can I fix this problem?
use the older opencv version such as opencv2.3, this version contains the vs2008 compiled dll.
compile the opencv by yourself.
I have noticed that your environment is: VC++ Express 2010 + OpenCV 2.4.2 + Win 7 64 bit.
Be sure OPENCV_DIR is set right.
setx -m OPENCV_DIR D:\OpenCV\Build\x64\vc10