OpenCV （十一）图像金字塔

图像金字塔：

由一系列图片组成，图片由下到上逐渐变小

上采样：

下采样：

高斯金字塔：

高斯不同：

图像金字塔代码：

#include<opencv2/opencv.hpp>
#include<iostream>

using namespace cv;
using namespace std;

Mat src, dst, output;

int main(int argc, char** argv) {
	src = imread("D:/OpenCVprj/image/test3.jpg");
	if (!src.data) {
		cout << "Could not load image......
" << endl;
		return -1;
	}
	imshow("src", src);
	//prraUp(src, dst, Size(src.cols*2, src.rows*2);
	pyrDown(src, dst, Size(src.cols/2, src.rows/2));
	imshow("dst", dst);
	pyrDown(dst, output , Size(dst.cols / 2, dst.rows / 2));
	imshow("output", output);


	waitKey(0);
	return 0;
}

　　

高斯金字塔代码：

#include<opencv2/opencv.hpp>
#include<iostream>

using namespace cv;
using namespace std;

Mat src, dst, output, gaussian_blur;

int main(int argc, char** argv) {
src = imread("D:/OpenCVprj/image/test3.jpg");
if (!src.data) {
cout << "Could not load image...... " << endl;
return -1;
}
imshow("src", src);
//prraUp(src, dst, Size(src.cols*2, src.rows*2);
GaussianBlur(src, gaussian_blur, Size(7, 7), 5, 5);
pyrDown(gaussian_blur, dst, Size(src.cols/2, src.rows/2));
imshow("dst", dst);
//pyrDown(dst, output , Size(dst.cols / 2, dst.rows / 2));
//imshow("output", output);

waitKey(0);
return 0;
}

高斯不同代码:

#include<opencv2/opencv.hpp>
#include<iostream>

using namespace cv;
using namespace std;

Mat src, dst, output, gaussian_blur, gaussian_blur_1;

int main(int argc, char** argv) {
	src = imread("D:/OpenCVprj/image/test3.jpg");
	if (!src.data) {
		cout << "Could not load image......
" << endl;
		return -1;
	}
	imshow("src", src);
	//prraUp(src, dst, Size(src.cols*2, src.rows*2);
	GaussianBlur(src, gaussian_blur, Size(7, 7), 5, 5);
	GaussianBlur(src, gaussian_blur_1, Size(7, 7), 0, 0);
	subtract(gaussian_blur, gaussian_blur_1, dst);
	normalize(dst, dst, 255, 0, NORM_MINMAX);
	//pyrDown(gaussian_blur, dst, Size(src.cols/2, src.rows/2));
	//pyrDown(dst, output , Size(dst.cols / 2, dst.rows / 2));
	//imshow("output", output);
	imshow("dst", dst);

	waitKey(0);
	return 0;
}