HOG+SVM 行人检测 with/wihout CUDA

草千里

于 2019-08-20 09:12:29 发布

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分类专栏：计算机视觉 CUDA

本文链接：https://blog.youkuaiyun.com/liqiancao/article/details/99296402

版权

具体原理网上例子太多了，这里只提供代码。

WITHOUT CUDA:

先来看一下不用CUDA时的效果：代码如下：

#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;

int main()
{
	VideoCapture cap("abc.avi");
	if (!cap.isOpened())
	{
		cerr << "can not open camera or video file" << endl;
		return -1;
	}
	while (1) {
		Mat src;
		cap.read(src);
		if (src.empty())
			break;

		//Define HOG Object
		HOGDescriptor hog;
		hog.setSVMDetector(HOGDescriptor::getDefaultPeopleDetector());
		//Detect the Pedestrians region on the test image 
		vector<Rect> regions;

		int64 start = getTickCount();
		hog.detectMultiScale(src, regions, 0.3, Size(8, 8), Size(32, 32), 1.05, 1);
		double fps = getTickFrequency() / (getTickCount() - start);
		cout << "FPS : " << fps << endl;
		// Display
		for (size_t i = 0; i < regions.size();