void readMatrix(FileStorage& input_file, const std::string& name, cv::Mat& matrix)
{
FileNode node = input_file[name];
CvMat* m;
m = (CvMat*)node.readObj();
ntk_throw_exception_if(!m, std::string("Could not read field ") + name + " from yml file.");
matrix = m;
}
void read_from_yaml(FileNode node, cv::Rect& r)
{
CvMat* c_m;
c_m = (CvMat*)node.readObj();
ntk_throw_exception_if(!c_m, std::string("Could not read field ") + node.name() + " from yml file.");
cv::Mat1f m (c_m);
ntk_assert(m.cols == 4, "Bad Rect.");
r = cv::Rect(m(0,0), m(0,1), m(0,2), m(0,3));
}
void read_from_yaml(FileNode node, cv::Vec2f& v)
{
CvMat* c_m;
c_m = (CvMat*)node.readObj();
ntk_throw_exception_if(!c_m, std::string("Could not read field ") + node.name() + " from yml file.");
cv::Mat1f m (c_m);
ntk_assert(m.cols == 2, "Bad vector.");
std::copy(m.ptr<float>(), m.ptr<float>()+2, &v[0]);
}
//reads matrix from yml file
void readMatrix(FileStorage& input_file, const std::string& name, cv::Mat& matrix)
{
FileNode node = input_file[name];
CvMat* m;
m = (CvMat*)node.readObj();
if(!m)
cerr << "Could not read field " << name << " from yml file." << endl;
matrix = m;
}