opencv/modules/nonfree/test/test_keypoints.cpp

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#include "test_precomp.hpp"
#include "opencv2/highgui.hpp"

using namespace std;
using namespace cv;

const string FEATURES2D_DIR = "features2d";
const string IMAGE_FILENAME = "tsukuba.png";

/****************************************************************************************\
*                                     Test for KeyPoint                                  *
\****************************************************************************************/

class CV_FeatureDetectorKeypointsTest : public cvtest::BaseTest
{
public:
    CV_FeatureDetectorKeypointsTest(const Ptr<FeatureDetector>& _detector) :
        detector(_detector) {}

protected:
    virtual void run(int)
    {
        cv::initModule_features2d();
        CV_Assert(!detector.empty());
        string imgFilename = string(ts->get_data_path()) + FEATURES2D_DIR + "/" + IMAGE_FILENAME;

        // Read the test image.
        Mat image = imread(imgFilename);
        if(image.empty())
        {
            ts->printf(cvtest::TS::LOG, "Image %s can not be read.\n", imgFilename.c_str());
            ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
            return;
        }

        vector<KeyPoint> keypoints;
        detector->detect(image, keypoints);

        if(keypoints.empty())
        {
            ts->printf(cvtest::TS::LOG, "Detector can't find keypoints in image.\n");
            ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
            return;
        }

        Rect r(0, 0, image.cols, image.rows);
        for(size_t i = 0; i < keypoints.size(); i++)
        {
            const KeyPoint& kp = keypoints[i];

            if(!r.contains(kp.pt))
            {
                ts->printf(cvtest::TS::LOG, "KeyPoint::pt is out of image (x=%f, y=%f).\n", kp.pt.x, kp.pt.y);
                ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
                return;
            }

            if(kp.size <= 0.f)
            {
                ts->printf(cvtest::TS::LOG, "KeyPoint::size is not positive (%f).\n", kp.size);
                ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
                return;
            }

            if((kp.angle < 0.f && kp.angle != -1.f) || kp.angle >= 360.f)
            {
                ts->printf(cvtest::TS::LOG, "KeyPoint::angle is out of range [0, 360). It's %f.\n", kp.angle);
                ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
                return;
            }
        }
        ts->set_failed_test_info(cvtest::TS::OK);
    }

    Ptr<FeatureDetector> detector;
};


// Registration of tests

TEST(Features2d_Detector_Keypoints_SURF, validation)
{
    CV_FeatureDetectorKeypointsTest test(Algorithm::create<FeatureDetector>("Feature2D.SURF"));
    test.safe_run();
}

TEST(Features2d_Detector_Keypoints_SIFT, validation)
{
    CV_FeatureDetectorKeypointsTest test(FeatureDetector::create("SIFT"));
    test.safe_run();
}