我是 OpenCV 和 C++ 的新手。我让 OpenCV 与 Microsoft Visual Studio 2008(32 位)一起工作,并设法让Filtering Tutorial / Sobel Derivatives和其他教程正常工作。
我现在正在使用他们在教程中提供的代码尝试级联分类器教程:
#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
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";
RNG rng(12345);
/** @function main */
int main( int argc, const char** argv )
{
CvCapture* capture;
Mat frame;
//-- 1. Load the cascades
if( !face_cascade.load( face_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };
if( !eyes_cascade.load( eyes_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };
//-- 2. Read the video stream
capture = cvCaptureFromCAM( -1 );
if( capture )
{
while( true )
{
frame = cvQueryFrame( capture );
//-- 3. Apply the classifier to the frame
if( !frame.empty() )
{ detectAndDisplay( frame ); }
else
{ printf(" --(!) No captured frame -- Break!"); break; }
int c = waitKey(10);
if( (char)c == 'c' ) { break; }
}
}
return 0;
}
/** @function detectAndDisplay */
void detectAndDisplay( Mat frame )
{
std::vector<Rect> faces;
Mat frame_gray;
cvtColor( frame, frame_gray, CV_BGR2GRAY );
equalizeHist( frame_gray, frame_gray );
//-- Detect faces
face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );
for( int i = 0; i < faces.size(); i++ )
{
Point center( faces[i].x + faces[i].width*0.5, faces[i].y + faces[i].height*0.5 );
ellipse( frame, center, Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 );
Mat faceROI = frame_gray( faces[i] );
std::vector<Rect> eyes;
//-- In each face, detect eyes
eyes_cascade.detectMultiScale( faceROI, eyes, 1.1, 2, 0 |CV_HAAR_SCALE_IMAGE, Size(30, 30) );
for( int j = 0; j < eyes.size(); j++ )
{
Point center( faces[i].x + eyes[j].x + eyes[j].width*0.5, faces[i].y + eyes[j].y + eyes[j].height*0.5 );
int radius = cvRound( (eyes[j].width + eyes[i].height)*0.25 );
circle( frame, center, radius, Scalar( 255, 0, 0 ), 4, 8, 0 );
}
}
//-- Show what you got
imshow( window_name, frame );
}
我已将这些库添加到链接器输入中: opencv_core230d.lib opencv_calib3d230d.lib opencv_contrib230d.lib opencv_features2d230d.lib opencv_highgui230d.lib opencv_legacy230d.lib opencv_ml230d.lib opencv_imgproc230d.lib opencv_video230d.lib opencv_objdetect230.lib opencvargtrainingpu
我在我的 Visual Studio 项目的主目录中有 xml 文件(解决方案文件所在的位置)
但是当我运行/调试时出现以下错误:
**
First-chance exception at 0x76b1b9bc in OpenCV_CascadeClassifier.exe: Microsoft C++ exception: cv::Exception at memory location 0x002ff1d0..
Unhandled exception at 0x77e315de in OpenCV_CascadeClassifier.exe: Microsoft C++ exception: cv::Exception at memory location 0x002ff1d0..
**
它没有显示一行错误的代码,而是将我指向一个内存位置并显示我不理解的反汇编代码。
问题:如何从我的网络摄像头获取视频流以与 Visual Studio 中的 OpenCV 代码进行通信?这是问题所在还是我错过了其他东西?
编辑:错误实际上发生在加载级联的第一行。我尝试将级联 xmls 放在不同的地方,但没有成功。
任何帮助表示赞赏。