void
HistogramFeatureExtractor::getFeatures(const ContinuationSegment& continuation, std::vector<double>& features) {
std::vector<double> sourceHistogram = computeHistogram(*continuation.getSourceSlice().get());
std::vector<double> targetHistogram = computeHistogram(*continuation.getTargetSlice().get());
for (unsigned int i = 0; i < _numBins; i++)
features[2*_numBins + i] = std::abs(sourceHistogram[i] - targetHistogram[i]);
double sourceSum = 0;
double targetSum = 0;
for (unsigned int i = 0; i < _numBins; i++) {
sourceSum += sourceHistogram[i];
targetSum += targetHistogram[i];
}
for (unsigned int i = 0; i < _numBins; i++)
features[2*_numBins + _numBins + i] = std::abs(sourceHistogram[i]/sourceSum - targetHistogram[i]/targetSum);
}
void
SegmentsPainter::draw(const ContinuationSegment& continuation) {
glCheck(glEnable(GL_TEXTURE_2D));
drawSlice(continuation.getSourceSlice(), 0.5, 1.0, 0.5);
drawSlice(continuation.getTargetSlice(), 0.5, 1.0, 0.5);
util::point<double> center1 = continuation.getSourceSlice()->getComponent()->getCenter();
util::point<double> center2 = continuation.getTargetSlice()->getComponent()->getCenter();
unsigned int section1 = continuation.getSourceSlice()->getSection();
unsigned int section2 = continuation.getTargetSlice()->getSection();
glCheck(glDisable(GL_TEXTURE_2D));
glBegin(GL_LINES);
glCheck(glVertex3f(center1.x, center1.y, section1*_zScale));
glCheck(glVertex3f(center2.x, center2.y, section2*_zScale));
glCheck(glEnd());
glBegin(GL_POINTS);
glCheck(glVertex3f(center1.x, center1.y, section1*_zScale));
glCheck(glVertex3f(center2.x, center2.y, section2*_zScale));
glCheck(glEnd());
}
void
GeometryFeatureExtractor::computeFeatures(const ContinuationSegment& continuation, std::vector<double>& features) {
const util::point<double>& sourceCenter = continuation.getSourceSlice()->getComponent()->getCenter();
const util::point<double>& targetCenter = continuation.getTargetSlice()->getComponent()->getCenter();
unsigned int sourceSize = continuation.getSourceSlice()->getComponent()->getSize();
unsigned int targetSize = continuation.getTargetSlice()->getComponent()->getSize();
util::point<double> difference = sourceCenter - targetCenter;
double distance = difference.x*difference.x + difference.y*difference.y;
double setDifference = _setDifference(*continuation.getSourceSlice(), *continuation.getTargetSlice(), false, false);
double setDifferenceRatio = setDifference/(sourceSize + targetSize);
double alignedSetDifference = _setDifference(*continuation.getSourceSlice(), *continuation.getTargetSlice(), false, true);
double alignedSetDifferenceRatio = setDifference/(sourceSize + targetSize);
double overlap = _overlap(*continuation.getSourceSlice(), *continuation.getTargetSlice());
double overlapRatio = overlap/(sourceSize + targetSize - overlap);
double alignedOverlap = _alignedOverlap(*continuation.getSourceSlice(), *continuation.getTargetSlice());
double alignedOverlapRatio = alignedOverlap/(sourceSize + targetSize - overlap);
features[0] = distance;
features[1] = setDifference;
features[2] = setDifferenceRatio;
features[3] = alignedSetDifference;
features[4] = alignedSetDifferenceRatio;
features[5] =
(continuation.getSourceSlice()->getComponent()->getSize() +
continuation.getTargetSlice()->getComponent()->getSize())*0.5;
features[6] = overlap;
features[7] = overlapRatio;
features[8] = alignedOverlap;
features[9] = alignedOverlapRatio;
if (!_noSliceDistance) {
double averageSliceDistance, maxSliceDistance;
_distance(*continuation.getSourceSlice(), *continuation.getTargetSlice(), true, false, averageSliceDistance, maxSliceDistance);
double alignedAverageSliceDistance, alignedMaxSliceDistance;
_distance(*continuation.getSourceSlice(), *continuation.getTargetSlice(), true, true, alignedAverageSliceDistance, alignedMaxSliceDistance);
features[10] = averageSliceDistance;
features[11] = maxSliceDistance;
features[12] = alignedAverageSliceDistance;
features[13] = alignedMaxSliceDistance;
}
}
void
SegmentsPainter::loadTextures(const ContinuationSegment& continuation) {
loadTexture(*continuation.getSourceSlice());
loadTexture(*continuation.getTargetSlice());
}
