//--------------------------------------------------
// As of writing this, you can use:
// FAST, STAR, SIFT, SURF, MSER, GFTT, HARRIS, L
vector<KeyPoint> MatchableImage::findFeatures(string alg_name)
{
log(LOG_LEVEL_DEBUG, "finding features using %s", alg_name.c_str());
if(featuresCurrent && featureAlgUsed.compare(alg_name)==0) return features;
if(empty())
{
log(LOG_LEVEL_ERROR, "in findFeatures(), image is empty");
}
// "L" isn't in the "createDetector" thingie.
// TO DO: Figure out what these vars do & how to pass them in!
// For that matter, how to pass in parameters to any of the other feature detectors?
if(alg_name.compare("L")==0)
{
Size patchSize(32, 32);
int radius = 7;
int threshold = 20;
int nOctaves=2;
int nViews=2000;
int clusteringDistance = 2;
ldetector = LDetector(radius, threshold, nOctaves, nViews, patchSize.width, clusteringDistance);
ldetector.setVerbose(true);
double backgroundMin=0;
double backgroundMax=256;
double noiseRange=5;
bool randomBlur=true;
double lambdaMin=0.8;
double lambdaMax=1.2;
double thetaMin=-CV_PI/2;
double thetaMax=CV_PI/2;
double phiMin=-CV_PI/2;
double phiMax=CV_PI/2;
gen = PatchGenerator(backgroundMin, backgroundMax, noiseRange, randomBlur,
lambdaMin, lambdaMax, thetaMin, thetaMax, phiMin, phiMax);
int maxPoints=100;
ldetector.getMostStable2D(bw(), features, maxPoints, gen);
}
else
{
Ptr<FeatureDetector> detector = createFeatureDetector( alg_name );
if(detector==0)
{
log(LOG_LEVEL_ERROR, "Feature detector %s not found!", alg_name.c_str());
}
detector->detect( bw(), features );
}
log(LOG_LEVEL_DEBUG, "in findFeatures(), %d features", features.size());
featuresCurrent = true;
descriptorsCurrent = false;
matcherTrained=false;
featureAlgUsed=alg_name;
return features;
}
void Learner::init(Detector *_detector)
{
detector = _detector;
patchGenerator = PatchGenerator(0, 0, DETECTOR_UPDATE_WARP_NOISE, DETECTOR_UPDATE_WARP_BLUR, 1. - DETECTOR_UPDATE_WARP_SCALE, 1. + DETECTOR_UPDATE_WARP_SCALE, -DETECTOR_UPDATE_WARP_ANGLE, DETECTOR_UPDATE_WARP_ANGLE, -DETECTOR_UPDATE_WARP_ANGLE, DETECTOR_UPDATE_WARP_ANGLE);
}
