FeatureInfo extractAllPoints(const QString& fname, OGRCoordinateTransformation *trans)
{
FeatureInfo ret = FeatureInfo();
DataSourcePtr ds(OGRSFDriverRegistrar::Open(fname.toLocal8Bit(), false));
if (ds == nullptr)
{
qWarning() << "Error opening file:" << fname;
}
else
{
size_t verts, objs;
auto layer = ds->GetLayer(0);
layer->ResetReading();
std::tie(verts, objs) = countGeometry(layer);
qDebug() << "Points:" << verts << "Objects:" << objs;
// Initialize the info
ret.verts.reserve(verts);
ret.starts.reserve(objs);
ret.counts.reserve(objs);
layer->ResetReading();
extractGeometry(layer, trans, ret);
}
return ret;
}
int BundlerMatcher::extractSiftFeature(int fileIndex)
{
std::stringstream filepath;
filepath << mInputPath << mFilenames[fileIndex];
std::string tmp = filepath.str();
char* filename = &tmp[0];
bool extracted = true;
unsigned int imgId = 0;
ilGenImages(1, &imgId);
ilBindImage(imgId);
int nbFeatureFound = -1;
if(ilLoadImage(filename))
{
int w = ilGetInteger(IL_IMAGE_WIDTH);
int h = ilGetInteger(IL_IMAGE_HEIGHT);
int format = ilGetInteger(IL_IMAGE_FORMAT);
if (mSift->RunSIFT(w, h, ilGetData(), format, GL_UNSIGNED_BYTE))
{
int num = mSift->GetFeatureNum();
SiftKeyDescriptors descriptors(128*num);
SiftKeyPoints keys(num);
mSift->GetFeatureVector(&keys[0], &descriptors[0]);
//Save Feature in RAM
mFeatureInfos.push_back(FeatureInfo(w, h, keys, descriptors));
nbFeatureFound = num;
}
else
{
extracted = false;
}
}
else
{
extracted = false;
}
ilDeleteImages(1, &imgId);
if (!extracted)
{
std::cout << "Error while reading : " <<filename <<std::endl;
}
return nbFeatureFound;
}
