// Find the image features and write into vector of features
std::vector<IPoint> * FastHessian::getIpoints()
{
// filter index map
int filter_map[5][4] = {{0,1,2,3}, {1,3,4,5}, {3,5,6,7}, {5,7,8,9}, {7,9,10,11}};
// Clear the vector of exisiting ipts
if (ipts == NULL) ipts = new std::vector<IPoint>();
else ipts->clear();
// Build the response map
buildResponseMap();
// Get the response layers
ResponseLayer * b, * m, * t;
for (int o = 0; o < octaves; ++o) for (int i = 0; i <= 1; ++i)
{
b = (*responseMap)[filter_map[o][i]];
m = (*responseMap)[filter_map[o][i+1]];
t = (*responseMap)[filter_map[o][i+2]];
// loop over middle response layer at density of the most
// sparse layer (always top), to find maxima across scale and space
for (int r = 0; r < t->height; ++r)
{
for (int c = 0; c < t->width; ++c)
{
if (isExtremum(r, c, *t, *m, *b))
{
interpolateExtremum(r, c, *t, *m, *b);
}
}
}
}
return ipts;
}
//! Find the image features and write into vector of features
void FastHessian::findFeatures()
{
// filter index map
static const int filter_map [OCTAVES][INTERVALS] = {{0,1,2,3}, {1,3,4,5}, {3,5,6,7}, {5,7,8,9}, {7,9,10,11}};
// Clear the vector of exisiting ipts
ipts.clear();
// Build the response map
buildResponseMap();
// Get the response layers
ResponseLayer *b, *m, *t;
for (int o = 0; o < octaves; ++o) for (int i = 0; i <= 1; ++i)
{
b = responseMap.at(filter_map[o][i]);
m = responseMap.at(filter_map[o][i+1]);
t = responseMap.at(filter_map[o][i+2]);
// loop over middle response layer at density of the most
// sparse layer (always top), to find maxima across scale and space
for (int r = 0; r < t->height; ++r)
{
for (int c = 0; c < t->width; ++c)
{
if (isExtremum(r, c, t, m, b))
{
interpolateExtremum(r, c, t, m, b);
}
}
}
}
}
int getIpoints(FastHessian *fh)
{
int o,i,r,c;
ResponseLayer *b, *m, *t;
// filter index map // variables should be OCTAVES AND INTERVAL BUT THERE IS AN ERROR
static const int filter_map [5][4] = {{0,1,2,3}, {1,3,4,5}, {3,5,6,7}, {5,7,8,9}, {7,9,10,11}};
// Build the response map
buildResponseMap(fh);
// Get the response layers
// Get the response layers
for (o = 0; o < fh->octaves; ++o)
{
for (i = 0; i <= 1; ++i)
{
b = &fh->responseMap[filter_map[o][i]];
m = &fh->responseMap[filter_map[o][i+1]];
t = &fh->responseMap[filter_map[o][i+2]];
// loop over middle response layer at density of the most
// sparse layer (always top), to find maxima across scale and space
for (r = 0; r < t->height; ++r)
{
for (c = 0; c < t->width; ++c)
{
if (isExtremum(r, c, t, m, b,fh))
{
interpolateExtremum(r, c, t, m, b,fh);
}
}
}
}
}
return count;
}
