Qt-Creator中

时间:2015-11-19 03:55:15

标签: c++ qt opencv

我在Qt-Creator中遇到以下错误,qt-5.4安装了OpenCV-3: -

: - 1:错误:LNK1104:无法打开文件' opencv_ts300.lib'

在我的项目的.pro文件中,我添加了 -

INCLUDEPATH += "E:\opencv\build\include"

LIBS += -L"E:\opencv\build\x86\vc11\lib"
LIBS += -lopencv_ts300d \ -lopencv_world300d \ -lopencv_ts300 \   -lopencv_world300d

以下是我的main.cpp程序: -

#include "mainwindow.h"
#include <QApplication>
#include<opencv2/opencv.hpp>

using namespace cv; // else would have to specify cv::cvtColor() etc.


int main(int argc, char *argv[])
{

QApplication a(argc, argv);
MainWindow w;
w.show();
char * imageName ="2-dp.JPG" ; // read the name of image to be loaded called   3-dp.JPG

Mat image;                  // declare Mat type object to load image-matrix

image = imread(imageName,1); // image object now contains image-matrix of the image loaded

if(!image.data)  // if image-data was invalid/non-existent/could not be read
{
    printf("No image data to load \n"); // then print messg
    return -1;                          // and exit program with exit code -1
}

Mat gray_image;            // Mat object declared for the image after gray-scale conversion

cvtColor(image, gray_image, CV_BGR2GRAY); // converts from BGR/RGB color space to gray scale

/*imwrite ("Gray_Image.jpg",gray_image);*/ //writes image-data (converted to gray scale iamge) into disk in JPEG format at file path given

namedWindow(imageName,CV_WINDOW_AUTOSIZE); // creates a named window for original image s.t window auto-scales its size as per image
namedWindow("Gray Image",CV_WINDOW_AUTOSIZE);

imshow(imageName,image);    // displays the image on the namedWindow by giving name of namedWindow
imshow("Gray Image",gray_image);

waitKey(0); //waits forever till user presses key


return a.exec();
}

请帮忙!

1 个答案:

答案 0 :(得分:0)

<强>联动

不应在一行中的库名称之间使用反斜杠符号\。它没有给出问题中提到的错误消息,但是链接失败并且具有相同的错误代码。

反斜杠符号可用于打破长行:

LIBS += -lopencv_ts300d \
        -lopencv_world300d

否则,库应该列在没有\的一行中:

LIBS += -lopencv_ts300 -lopencv_world300

<强>运行

在运行时可能会发现一些问题。

有两种库类型:debug(由后缀d标记)和release。它们不应该混合在一个版本中。使用错误的库类型可能会导致运行时崩溃,例如OpenCV in Qt crashes on deallocation of vector of lines when using HoughLinesP

根据发布或调试模式,可以编写仅使用适当库的qmake .pro文件:

INCLUDEPATH += "E:\opencv\build\include"

LIBS += -L"E:\opencv\build\x86\vc11\lib"

CONFIG(release, debug|release) {
    # release libraries
    LIBS += -lopencv_ts300 -lopencv_world300
}

CONFIG(debug, debug|release) {
    # debug libraries
    LIBS += -lopencv_ts300d \
            -lopencv_world300d
}

请注意E:\opencv\build\x86\vc11\bin中还有二进制动态加载库。如果在运行时找不到这些库,则应用程序应该崩溃。该路径可以添加到系统PATH环境变量中,或者可以将所需的库复制到应用程序文件夹或系统PATH中列出的其他位置。

确保您使用vc11的编译器,链接器和Qt构建。对于MSVC2013,应使用文件夹vc12E:\opencv\build\x86\vc12\lib)中的库。