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!
答案 0 :(得分:0)
<强>联动强>
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>运行强>
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vc12
(E:\opencv\build\x86\vc12\lib
)中的库。