OpenCV3之——XML、YAML文件的读写

<1>示例程序：XML和YAML文件的写入

#include <opencv2/opencv.hpp>
#include <time.h>
using namespace cv;

int main() {
	//初始化
	//FileStorage fs("test.yaml", FileStorage::WRITE);
	FileStorage fs("test.xml", FileStorage::WRITE);
	//开始文件写入
	fs << "frameCount" << 5;
	time_t rawtime;
	time(&rawtime);
	fs << "calibrationDate" << asctime(localtime(&rawtime));
	Mat cameraMattrix = (Mat_<double>(3, 3) << 1000, 0, 320, 0, 1000, 240, 0, 0, 1);
	Mat distCoeffs = (Mat_<double>(5, 1) << 0.1, 0.01, -0.001, 0, 0);
	fs << "cameraMatrix" << cameraMattrix << "distCoeffs" << distCoeffs;
	fs << "features" << "[";
	for (int i = 0; i < 3; i++) {
		int x = rand() % 640;
		int y = rand() % 480;
		uchar lbp = rand() % 256;

		fs << "{:" << "x" << x << "y" << y << "lbp" << "[:";
		for (int j = 0; j < 8; j++)
			fs << ((lbp >> j) & 1);
		fs << "]" << "}";
	}
	fs << "]";
	fs.release();

	std::cout << "文件读写完毕，请在工程目录下查看生成的文件！";
	getchar();

	return(0);
}

得到工程目录下文件：

<2>示例程序：XML和YAML文件的读出

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

int main() {
	//改变console字体颜色
	system("color 6F");

	//初始化
	FileStorage fs2("test.yaml", FileStorage::READ);

	//第一种方法，对FileNode操作
	int frameCount = (int)fs2["frameCount"];

	std::string date;
	//第二种方法，使用FileNode运算符>>
	fs2["calibrationDate"] >> date;
	
	Mat cameraMatrix2, distCoeffs2;
	fs2["cameraMatrix"] >> cameraMatrix2;
	fs2["distCoeffs"] >> distCoeffs2;

	cout << "frameCount：" << frameCount << endl
		<< "calibration date：" << date << endl
		<<"camera matrix："<<cameraMatrix2<<endl
		<< "distortion coeffs：" << distCoeffs2 << endl;

	FileNode features = fs2["features"];
	FileNodeIterator it = features.begin(), it_end = features.end();
	int idx = 0;
	vector<uchar> lbpval;

	//使用FileNodeIterator遍历序列
	for (; it != it_end; ++it, idx++) {
		cout << "feature #" << idx << ":";
		cout << "x=" << (int)(*it)["x"] << ",y=" << (int)(*it)["y"] << ",lbp:(";
		//我们也可以使用filenode>>std::vector操作符来很容易的读取阵列
		(*it)["lbp"] >> lbpval;
		for (int i = 0; i < (int)lbpval.size(); i++)
			cout << " " << (int)lbpval[i];
		cout << ")" << endl;
	}
	fs2.release();

	printf("\n文件读取完毕，输入任意键结束程序！");
	getchar();

	return(0);
}

读取test.yaml文件结果：