C++ 在使用findHomography时遇到一些困难-编译错误
以下是从open cv文档中查找已知对象的功能2d+同形异义词y的代码C++ 在使用findHomography时遇到一些困难-编译错误,c++,opencv,visual-studio-2013,C++,Opencv,Visual Studio 2013,以下是从open cv文档中查找已知对象的功能2d+同形异义词y的代码 #include<opencv\cv.h> #include <opencv2\core\core.hpp> #include <opencv2\features2d\features2d.hpp> #include <opencv2\highgui\highgui.hpp> #include <opencv2\nonfree\nonfree.hpp> #inclu
#include<opencv\cv.h>
#include <opencv2\core\core.hpp>
#include <opencv2\features2d\features2d.hpp>
#include <opencv2\highgui\highgui.hpp>
#include <opencv2\nonfree\nonfree.hpp>
#include <opencv2\calib3d\calib3d.hpp>
#include <opencv2\imgproc\imgproc.hpp>
#include <iostream>
using namespace std;
using namespace cv;
/** @function main */
int main(){
/*-- Load the images --*/
Mat image1= imread("C:\\panL.jpg");
Mat image2 = imread("C:\\panR.jpg");
if (!image1.data || !image2.data)
{
cout << " --(!) Error reading images " << endl; return -1;
}
imshow("first image", image2);
imshow("second image", image1);
/*-- Detecting the keypoints using SURF Detector --*/
int minHessian = 400;
SurfFeatureDetector detector(minHessian);
vector<KeyPoint> keypoints_1, keypoints_2;
detector.detect(image1, keypoints_1);
detector.detect(image2, keypoints_2);
/*-- Calculating descriptors (feature vectors) --*/
SurfDescriptorExtractor extractor;
Mat descriptors_1, descriptors_2;
extractor.compute(image1, keypoints_1, descriptors_1);
extractor.compute(image2, keypoints_2, descriptors_2);
/*-- Step 3: Matching descriptor vectors using FLANN matcher --*/
FlannBasedMatcher matcher;
vector< DMatch > matches;
matcher.match(descriptors_1, descriptors_2, matches);
//-- Quick calculation of max and min distances between keypoints
double max_dist = 0; double min_dist = 100;
for (int i = 0; i < descriptors_1.rows; i++)
{
double dist = matches[i].distance;
if (dist < min_dist) min_dist = dist;
if (dist > max_dist) max_dist = dist;
}
cout << "-- Max dist :" << max_dist << endl;
cout << "-- Min dist :" << min_dist << endl;
/*-- Drawing matches whose distance is less than 2*min_dist,
*-- or a small arbitary value ( 0.02 ) in the event that min_dist is verysmall)
*/
vector< DMatch > good_matches;
for (int i = 0; i < descriptors_1.rows; i++)
{
if (matches[i].distance <= max(2 * min_dist, 0.02))
{
good_matches.push_back(matches[i]);
}
}
/*-- Draw only good matches --*/
Mat img_matches;
drawMatches(image1, keypoints_1, image2, keypoints_2,
good_matches, img_matches, Scalar::all(-1), Scalar::all(-1),
vector<char>(), DrawMatchesFlags::NOT_DRAW_SINGLE_POINTS);
/*-- Show detected matches --*/
imshow("Good Matches", img_matches);
for (int i = 0; i < (int)good_matches.size(); i++)
{
cout << "-- Good Match [i] Keypoint 1: " << good_matches[i].queryIdx << " -- Keypoint 2:" << good_matches[i].trainIdx << endl;
}
vector< Point2f > obj;
vector< Point2f > scene;
if (good_matches.size() >= 4)
{
for (int i = 0; i < good_matches.size(); i++)
{
//-- Get the keypoints from the good matches
obj.push_back(keypoints_1[good_matches[i].queryIdx].pt);
scene.push_back(keypoints_2[good_matches[i].trainIdx].pt);
}
// Find the Homography Matrix
Mat H = findHomography(obj, scene, CV_RANSAC);
// Use the Homography Matrix to warp the images
Mat result;
warpPerspective(image1, result, H, Size(image1.cols + image2.cols, image1.rows));
Mat half(result, Rect(0, 0, image2.cols, image2.rows));
image2.copyTo(half);
imshow("Result", result);
}
waitKey(0);
return 0;
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/**@主功能*/
int main(){
/*--加载图像--*/
Mat image1=imread(“C:\\panL.jpg”);
Mat image2=imread(“C:\\panR.jpg”);
如果(!image1.data | |!image2.data)
{
cout max_dist)max_dist=dist;
}
由于未链接OpenCV库,因此可能会出现链接错误。您可以将以下库添加到VS2013项目的属性>链接器>输入>其他依赖项(假设您在调试模式下使用OpenCV-2.4.8):
如果您正在使用CMake,这将更加容易,只需通过以下方式完成:
target_link_libraries(yourProject ${OpenCV_LIBS})
target_link_libraries(yourProject ${OpenCV_LIBS})