http://licong1018.blog.163.com/blog/static/902697842012111594813944/
Sift算法的c++实现代码,使用OpenCV中提供的sift类库,OpenCV2.3.1在VS2010中的配置参见日志Opencv2.3.1在VS2008和VS2010平台上安装配置图解。
方法一:
建立一个控制台应用程序代码如下:
#include "stdafx.h"
#include "highgui.h"
#include "features2d/features2d.hpp"
#include <iostream>
using namespace std;
using namespace cv;
void _tmain(int argc, _TCHAR* argv[])
{
Mat input1=imread("image1.jpg",1);
Mat input2=imread("image2.jpg",1);
SiftFeatureDetector detector;
vector<KeyPoint> keypoint1,keypoint2;
detector.detect(input1,keypoint1);
Mat output1;
drawKeypoints(input1,keypoint1,output1);
imshow("sift_result1.jpg",output1);
imwrite("sift_result1.jpg",output1);
Mat output2;
SiftDescriptorExtractor extractor;
Mat descriptor1,descriptor2;
BruteForceMatcher<L2<float>> matcher;
vector<DMatch> matches;
Mat img_matches;
detector.detect(input2,keypoint2);
drawKeypoints(input2,keypoint2,output2);
imshow("sift_result2.jpg",output2);
imwrite("sift_result2.jpg",output2);
extractor.compute(input1,keypoint1,descriptor1);
extractor.compute(input2,keypoint2,descriptor2);
matcher.match(descriptor1,descriptor2,matches);
drawMatches(input1,keypoint1,input2,keypoint2,matches,img_matches);
imshow("matches",img_matches);
imwrite("matches.jpg",img_matches);
waitKey();
}
运行结果如下图:
#include "stdafx.h"
#include "highgui.h"
#include "features2d/features2d.hpp"
#include <iostream>
using namespace std;
using namespace cv;
void _tmain(int argc, _TCHAR* argv[])
{
Mat image=imread("test.bmp");
Mat iamgeGray=imread("test.bmp",0);
Mat descriptors;
vector<KeyPoint> keypoints;
SiftFeatureDetector sift2(0.06f,10.0);
sift2.detect(iamgeGray,keypoints);
drawKeypoints(image,keypoints,image,Scalar(255,0,255));
imshow("test",image);
waitKey();
}
运行效果如下:
提示: 如果出现没有找到tbb_debug.dll错误,修改方法如下:1、将OpenCV安装路径D:\Program Files\opencv2.3.1\build\common\tbb\ia32\vc10下的tbb.dll复制一份并重命名为tbb_debug.dll
2、将上面得到的tbb_debug.dll拷贝到 安装路径D:\Program Files\opencv2.3.1\build\ x86\vc10\bin 目录下即可。