Demo3:视频人体检测

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#include <iostream>
#include <string>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/objdetect/objdetect.hpp>
#include <opencv2/ml/ml.hpp>
 
using namespace std;
using namespace cv;
 
int main()
{
 
	Mat src = imread("10.jpg");
	HOGDescriptor hog;//HOG特征检测器
	hog.setSVMDetector(HOGDescriptor::getDefaultPeopleDetector());//设置SVM分类器为默认参数
	vector<Rect> found, found_filtered;//矩形框数组
	hog.detectMultiScale(src, found, 0, Size(8,8), Size(32,32), 1.05, 2);//对图像进行多尺度检测，检测窗口移动步长为(8,8)
 
	cout<<"矩形个数："<<found.size()<<endl;
	//找出所有没有嵌套的矩形框r,并放入found_filtered中,如果有嵌套的话,则取外面最大的那个矩形框放入found_filtered中
	for(int i=0; i < found.size(); i++)
	{
		Rect r = found[i];
		int j=0;
		for(; j < found.size(); j++)
			if(j != i && (r