当我在互联网上运行一些代码时遇到以下问题:http://docs.opencv.org/doc/tutorials/objdetect/cascade_classifier/cascade_classifier.html:newmain.cpp :(.text + 0x17):未定义引用`cv :: VideoCapture :: VideoCapture()'
newmain.cpp :(.text + 0x35):对`cv :: CascadeClassifier :: load(std :: string const&)'的未定义引用
newmain.cpp :(.text + 0x5f):对`cv :: CascadeClassifier :: load(std :: string const&)'的未定义引用
newmain.cpp :(.text + 0x8e):对`cv :: VideoCapture :: open(int)'的未定义引用
newmain.cpp :(.text + 0x9d):对`cv :: VideoCapture :: isOpened()const'的未定义引用
newmain.cpp :(.text + 0x116):对`cv :: waitKey(int)'的未定义引用
newmain.cpp :(.text + 0x141):对`cv :: VideoCapture :: read(cv :: Mat&)'的未定义引用
(列表继续但所有相同类型的错误)
该代码应该从图片中检测面部和眼睛.
代码使用opencv2中的一些函数,我已经安装了这些函数:
#include "opencv2/objdetect/objdetect.hpp" #include "opencv2/highgui/highgui.hpp" #include "opencv2/imgproc/imgproc.hpp" #include#include using namespace std; using namespace cv; /** Function Headers */ void detectAndDisplay( Mat frame ); /** Global variables */ String face_cascade_name = "haarcascade_frontalface_alt.xml"; String eyes_cascade_name = "haarcascade_eye_tree_eyeglasses.xml"; CascadeClassifier face_cascade; CascadeClassifier eyes_cascade; String window_name = "Capture - Face detection"; /** @function main */ int main( void ) { VideoCapture capture; Mat frame; //-- 1. Load the cascades if( !face_cascade.load( face_cascade_name ) ){ printf("--(!)Error loading face cascade\n"); return -1; }; if( !eyes_cascade.load( eyes_cascade_name ) ){ printf("--(!)Error loading eyes cascade\n"); return -1; }; //-- 2. Read the video stream capture.open( -1 ); if ( ! capture.isOpened() ) { printf("--(!)Error opening video capture\n"); return -1; } while ( capture.read(frame) ) { if( frame.empty() ) { printf(" --(!) No captured frame -- Break!"); break; } //-- 3. Apply the classifier to the frame detectAndDisplay( frame ); int c = waitKey(10); if( (char)c == 27 ) { break; } // escape } return 0; } /** @function detectAndDisplay */ void detectAndDisplay( Mat frame ) { std::vector faces; Mat frame_gray; cvtColor( frame, frame_gray, COLOR_BGR2GRAY ); equalizeHist( frame_gray, frame_gray ); //-- Detect faces face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CASCADE_SCALE_IMAGE, Size(30, 30) ); for ( size_t i = 0; i < faces.size(); i++ ) { Point center( faces[i].x + faces[i].width/2, faces[i].y + faces[i].height/2 ); ellipse( frame, center, Size( faces[i].width/2, faces[i].height/2 ), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 ); Mat faceROI = frame_gray( faces[i] ); std::vector eyes; //-- In each face, detect eyes eyes_cascade.detectMultiScale( faceROI, eyes, 1.1, 2, 0 |CASCADE_SCALE_IMAGE, Size(30, 30) ); for ( size_t j = 0; j < eyes.size(); j++ ) { Point eye_center( faces[i].x + eyes[j].x + eyes[j].width/2, faces[i].y + eyes[j].y + eyes[j].height/2 ); int radius = cvRound( (eyes[j].width + eyes[j].height)*0.25 ); circle( frame, eye_center, radius, Scalar( 255, 0, 0 ), 4, 8, 0 ); } } //-- Show what you got imshow( window_name, frame ); }
感谢你给与我的帮助!