65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
|
#include <iostream>
|
||
|
|
|
||
|
|
#include <opencv2/core/core.hpp>
|
||
|
|
#include <opencv2/features2d/features2d.hpp>
|
||
|
|
#include <opencv2/highgui/highgui.hpp>
|
||
|
|
#include <opencv2/gpu/gpu.hpp>
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace cv;
|
||
|
|
using namespace cv::gpu;
|
||
|
|
|
||
|
|
void help()
|
||
|
|
{
|
||
|
|
cout << "\nThis program demonstrates using SURF_GPU features detector, descriptor extractor and BruteForceMatcher_GPU" << endl;
|
||
|
|
cout << "\nUsage:\n\tmatcher_simple_gpu <image1> <image2>" << endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char* argv[])
|
||
|
|
{
|
||
|
|
if (argc != 3)
|
||
|
|
{
|
||
|
|
help();
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
GpuMat img1(imread(argv[1], CV_LOAD_IMAGE_GRAYSCALE));
|
||
|
|
GpuMat img2(imread(argv[2], CV_LOAD_IMAGE_GRAYSCALE));
|
||
|
|
if (img1.empty() || img2.empty())
|
||
|
|
{
|
||
|
|
cout << "Can't read one of the images" << endl;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
SURF_GPU surf;
|
||
|
|
|
||
|
|
// detecting keypoints & computing descriptors
|
||
|
|
GpuMat keypoints1GPU, keypoints2GPU;
|
||
|
|
GpuMat descriptors1GPU, descriptors2GPU;
|
||
|
|
surf(img1, GpuMat(), keypoints1GPU, descriptors1GPU);
|
||
|
|
surf(img2, GpuMat(), keypoints2GPU, descriptors2GPU);
|
||
|
|
|
||
|
|
// matching descriptors
|
||
|
|
BruteForceMatcher_GPU< L2<float> > matcher;
|
||
|
|
GpuMat trainIdx, distance;
|
||
|
|
matcher.matchSingle(descriptors1GPU, descriptors2GPU, trainIdx, distance);
|
||
|
|
|
||
|
|
// downloading results
|
||
|
|
vector<KeyPoint> keypoints1, keypoints2;
|
||
|
|
vector<float> descriptors1, descriptors2;
|
||
|
|
vector<DMatch> matches;
|
||
|
|
SURF_GPU::downloadKeypoints(keypoints1GPU, keypoints1);
|
||
|
|
SURF_GPU::downloadKeypoints(keypoints2GPU, keypoints2);
|
||
|
|
SURF_GPU::downloadDescriptors(descriptors1GPU, descriptors1);
|
||
|
|
SURF_GPU::downloadDescriptors(descriptors2GPU, descriptors2);
|
||
|
|
BruteForceMatcher_GPU< L2<float> >::matchDownload(trainIdx, distance, matches);
|
||
|
|
|
||
|
|
// drawing the results
|
||
|
|
Mat img_matches;
|
||
|
|
drawMatches(img1, keypoints1, img2, keypoints2, matches, img_matches);
|
||
|
|
imshow("matches", img_matches);
|
||
|
|
waitKey(0);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|