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added detector and descriptor evaluation to sample descriptor_extractor_matcher

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This commit is contained in:
Maria Dimashova 2010-08-05 13:34:53 +00:00
parent 4395bad911
commit d8ad4e2267
1 changed files with 28 additions and 6 deletions
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34
samples/cpp/descriptor_extractor_matcher.cpp
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@ -30,7 +30,7 @@ void warpPerspectiveRand( const Mat& src, Mat& dst, Mat& H, RNG& rng )
const string winName = "correspondences";
void doIteration( const Mat& img1, Mat& img2, bool isWarpPerspective,
const vector<KeyPoint>& keypoints1, const Mat& descriptors1,
vector<KeyPoint>& keypoints1, const Mat& descriptors1,
Ptr<FeatureDetector>& detector, Ptr<DescriptorExtractor>& descriptorExtractor,
Ptr<DescriptorMatcher>& descriptorMatcher,
double ransacReprojThreshold, RNG& rng )
@ -45,12 +45,23 @@ void doIteration( const Mat& img1, Mat& img2, bool isWarpPerspective,
cout << endl << "< Extracting keypoints from second image..." << endl;
vector<KeyPoint> keypoints2;
detector->detect( img2, keypoints2 );
cout << keypoints2.size() << " >" << endl;
cout << keypoints2.size() << " points" << endl << ">" << endl;
if( !H12.empty() )
{
cout << "< Evaluate feature detector..." << endl;
float repeatability;
int correspCount;
evaluateFeatureDetector( img1, img2, H12, &keypoints1, &keypoints2, repeatability, correspCount );
cout << "repeatability = " << repeatability << endl;
cout << "correspCount = " << correspCount << endl;
cout << ">" << endl;
}
cout << "< Computing descriptors for keypoints from second image..." << endl;
Mat descriptors2;
descriptorExtractor->compute( img2, keypoints2, descriptors2 );
cout << " >" << endl;
cout << ">" << endl;
cout << "< Matching descriptors..." << endl;
vector<int> matches;
@ -59,6 +70,17 @@ void doIteration( const Mat& img1, Mat& img2, bool isWarpPerspective,
descriptorMatcher->match( descriptors1, matches );
cout << ">" << endl;
if( !H12.empty() )
{
cout << "< Evaluate descriptor match..." << endl;
vector<Point2f> curve;
Ptr<GenericDescriptorMatch> gdm = new VectorDescriptorMatch( descriptorExtractor, descriptorMatcher );
evaluateDescriptorMatch( img1, img2, H12, keypoints1, keypoints2, 0, 0, curve, gdm );
for( float l_p = 0; l_p < 1 - FLT_EPSILON; l_p+=0.1 )
cout << "1-precision = " << l_p << "; recall = " << getRecall( curve, l_p ) << endl;
cout << ">" << endl;
}
if( !isWarpPerspective && ransacReprojThreshold >= 0 )
{
cout << "< Computing homography (RANSAC)..." << endl;
@ -144,15 +166,15 @@ int main(int argc, char** argv)
cout << endl << "< Extracting keypoints from first image..." << endl;
vector<KeyPoint> keypoints1;
detector->detect( img1, keypoints1 );
cout << keypoints1.size() << " >" << endl;
cout << keypoints1.size() << " points" << endl << ">" << endl;
cout << "< Computing descriptors for keypoints from first image..." << endl;
Mat descriptors1;
descriptorExtractor->compute( img1, keypoints1, descriptors1 );
cout << " >" << endl;
cout << ">" << endl;
namedWindow(winName, 1);
RNG rng;
RNG rng = theRNG();
doIteration( img1, img2, isWarpPerspective, keypoints1, descriptors1,
detector, descriptorExtractor, descriptorMatcher,
ransacReprojThreshold, rng );