对cv::Tracker::update的未定义引用
Undefined Reference to cv::Tracker::update
我正在尝试使用OpenCV的跟踪API。我确实按照这里的说明制作了OpenCV:https://github.com/itseez/opencv_contrib/.在构建时,我不得不关闭CMakegui中的一些参数。制作完成后,我使用跟踪API运行了以下代码:
#include <opencv2/core/utility.hpp>
#include <opencv2/video/tracking.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <tracker.hpp>
#include <iostream>
#include <cstring>
using namespace std;
using namespace cv;
static Mat image;
static Rect2d boundingBox;
static bool paused;
static bool selectObject = false;
static bool startSelection = false;
static void onMouse( int event, int x, int y, int, void* )
{
if( !selectObject )
{
switch ( event )
{
case EVENT_LBUTTONDOWN:
//set origin of the bounding box
startSelection = true;
boundingBox.x = x;
boundingBox.y = y;
boundingBox.width = boundingBox.height = 0;
break;
case EVENT_LBUTTONUP:
//sei with and height of the bounding box
boundingBox.width = std::abs( x - boundingBox.x );
boundingBox.height = std::abs( y - boundingBox.y );
paused = false;
selectObject = true;
break;
case EVENT_MOUSEMOVE:
if( startSelection && !selectObject )
{
//draw the bounding box
Mat currentFrame;
image.copyTo( currentFrame );
rectangle( currentFrame, Point((int) boundingBox.x, (int)boundingBox.y ), Point( x, y ), Scalar( 255, 0, 0 ), 2, 1 );
imshow( "Tracking API", currentFrame );
}
break;
}
}
}
//
// Hot keys:
// q - quit the program
// p - pause video
//
int main( int argc, char** argv )
{
//open the capture
VideoCapture cap(0);
if( !cap.isOpened() )
{
return -1;
}
//
// "MIL", "BOOSTING", "MEDIANFLOW", "TLD"
//
string tracker_algorithm = "MIL";
if ( argc>1 ) tracker_algorithm = argv[1];
Mat frame;
paused = false;
namedWindow( "Tracking API", 0 );
setMouseCallback( "Tracking API", onMouse, 0 );
Ptr<Tracker> tracker = Tracker::create( tracker_algorithm );
if( tracker == NULL )
{
cout << "***Error in the instantiation of the tracker...***n";
return -1;
}
//get the first frame
cap >> frame;
frame.copyTo( image );
imshow( "Tracking API", image );
bool initialized = false;
int frameCounter = 0;
for ( ;; )
{
char c = (char) waitKey( 2 );
if( c == 'q' || c == 27 )
break;
if( c == 'p' )
paused = !paused;
if ( !paused )
{
cap >> frame;
if(frame.empty())
{
break;
}
frame.copyTo( image );
if( selectObject )
{
if( !initialized )
{
//initializes the tracker
if( !tracker->init( frame, boundingBox ) )
{
cout << "***Could not initialize tracker...***n";
return -1;
}
initialized = true;
}
else
{
//updates the tracker
if( tracker->update( frame, boundingBox ) )
{
rectangle( image, boundingBox, Scalar( 255, 0, 0 ), 2, 1 );
}
}
}
imshow( "Tracking API", image );
frameCounter++;
}
}
return 0;
}
然而,我得到了一个错误,类跟踪器的函数没有定义,在链接。这是我的构建日志的一部分:
g++.exe-LC:\opencv\min_bin\install\x64\mingw\lib-o bin\Debug\main_project.exe obj\Debug\t1.o C:\opencv\min_bin\install\x64\minw\lib\libopencv_bgsegm300.dll.a C:\opencv\main_bin\install \x64\ming w\lib\libopencv_bioinspired300.dll。a C:\opencc\min_bin \ install\x64\ ming w\lib \libopenc_calib3d300.dll。\libopencv_ccalib300.dll.aC: \opencv\min_bin\install\x64\mingw\lib\libopencv_core300.dll.a C:\opencv\mini_bin\install\x64\minw\lib\libopencv_dnn300.dll.a C:\opencc\min_bin \install\x44\mingw\libopeniv_dpm300.dll\a C:\openvc\min_bin.install\x64\ mingw\lib \libopenv_face300.dll:a C:\openpv\min_bin/install\x64\mingw\libopeniv_features2d300.dll.a C:\opencv _bin\install\x64\mingw\lib\libopencv_frann300.dll.aC: \opencv\min_bin\install\x64\mingw\lib\libopencv_fuzzy300.dll.a C:\opencv\mini_bin\install\x64\ming w\lib\libopencv_har300.a C:\opencv\min-bin\install\x64\mingw\lib\libopeniv_higgui300.dll\a C:\openpv\min_bin \install\x44\mingw/lib\libopenv_imgcodecs300.dll.a C:\openiv\ min_bin\install\x64\mingw\lib\libopencv_ml300.dll.aC: \opencv\min_bin\install\x64\mingw\lib\libopencv_ojdetect300.dll.a C:\opencv\main_bin\install\x64\mangw\lib\libopencv_phot300.dll\a C:\opencc\min_bin \install\x64\mingw\lib\libopeniv_plot300.dll.a C:\openvc\min_bin/install\x64\mangw\lib\libopeniv_reg300.dll:a C:\openpv\min_bin.install\x64\ mingw\lib \install\x64\mingw\lib\libopencv_saliency300.dll.aC: \opencv\min_bin\install\x64\mingw\lib\libopencv_shape300.dll.a C:\opencv\min _bin\install\x64\ming w\lib\libopencv_steop300.dll。a C:\opencc\min_bin \install\x44\mingw\lib\libopenv_stiotching300.dll。a C:\opencv\min-bin\install\x64\mingw/lib\libopenv_structured_light300.dll.aC: \opencv\min_bin\install\x64\mingw\lib\libopencv_surface_matching300.dll.a C:\opencv\main_bin\install\x64\mingw\libopencv_text300.dll\a C:\opencc\min_bin \install\x64\ming w\lib\libopeniv_ts300.a C:\opencv\min _bin\nstall\x64\minw\lib\ libopencv_video300.dll.a C:\openvc\min_bin/install\x64\ mingw\lib在\install\x64\mingw\lib\libopencv_videostab300.dll.a中C: \opencv\min_bin\install\x64\mingw\lib\libopencv_xobjdetect300.dll.aobj\Debug\t1.o:在函数
main': E:/main_proj/main_project/t1.cpp:79: undefined reference to
中cv::Tracker::create(cv::String const&)'E:/main_proj/main_project/t1.cpp:116:对cv::Tracker::init(cv::Mat const&, cv::Rect_<double> const&)' E:/main_proj/main_project/t1.cpp:126: undefined reference to
cv::Tracker::update(cv::Mat const&,cv::Rect_&)'的未定义引用
我想这是OpenCV制作过程中出现的一些问题。有人能提出解决方案吗?
使用-L
(带库目录的路径)选项链接时,如
-LC:opencvmin_bininstallx64mingwlib
您也应该使用-l
来链接到特定的库。
似乎没有找到CCD_ 5库。
我重建了整个模块集,现在它可以工作了。我仍然不确定早些时候到底丢了什么。在获得成功的构建之前,您需要进行多次实验。非常感谢您的建议-@berak和@John
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