Iam使用HAAR分類器在openCV中進行人臉檢測。這裏是我的代碼使用HAAR分類器的人臉檢測
#include "stdafx.h"
#include <opencv2\objdetect\objdetect.hpp>
#include <opencv2\highgui\highgui.hpp>
#include <opencv2\imgproc\imgproc.hpp>
#include <opencv\cv.h>
#include <iostream>
#include <stdio.h>
using namespace std;
using namespace cv;
void detectAndDisplay(Mat frame);
String face_cascade_name = "haarcascade_frontalface_alt.xml";
String eyes_cascade_name = "haarcascade_eye_tree_eyeglasses.xml";
CascadeClassifier face_cascade;
CascadeClassifier eye_cascade;
string window_name = "Capture- Face detection";
int _tmain(int argc, _TCHAR* argv[])
{
Mat frame = imread("C:/Users/Public/Pictures/Sample Pictures/lena.png");
imshow("original picture", frame);
if (face_cascade.load(face_cascade_name))
{
cout << "\n Error loading " << endl;
}
if (eye_cascade.load(eyes_cascade_name))
{
cout << "\n Error Loading " << endl;
}
if (!frame.empty())
{
detectAndDisplay(frame);
}
waitKey(0);
return 0;
}
void detectAndDisplay(Mat frame)
{
vector<Rect>faces;
imshow("lena.png", frame);
Mat frame_gray;
cvtColor(frame, frame_gray, CV_BGR2GRAY);
equalizeHist(frame_gray, frame_gray);
imshow("Gray Color Image", frame_gray);
face_cascade.detectMultiScale(frame_gray, faces, 1.1, 2, 0 | CV_HAAR_SCALE_IMAGE, Size(20, 20));
int k = faces.size();
for (size_t 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, 0));
Mat faceROI = frame_gray(faces[i]);
vector<Rect>eyes;
eye_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[j].height)*0.25);
circle(frame, center, radius, Scalar(0, 0,255), 4, 8, 0);
}
}
imshow(window_name, frame);
}
這裏我的代碼不工作。臉部未被檢測到。 IAM試圖得到int k = faces.size(),它獲得'0'值。什麼可能是可能的錯誤。
您正在嘗試檢測考拉的臉部。這是錯誤。 – guneykayim 2015-02-23 12:32:58
即使它也不適用於lena.png。我也試過。 – srinivasporam 2015-02-23 12:36:00
嘗試使用多個不同的圖像,而不僅僅是一個圖像或一個aminal的圖像...最好用網絡攝像機進行測試.. – guneykayim 2015-02-23 12:41:39