/usr/include/vigra/random_forest/features.hxx is in libvigraimpex-dev 1.10.0+git20160211.167be93+dfsg-2+b5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | #ifndef RN_FEATURES_HXX
#define RN_FEATURES_HXX
class FeatureBase
{
public:
MultiArrayShape<2>::type shape() = 0;
int shape(int index)
{
return shape()[index];
}
double & operator() (int i, int j) = 0;
};
class CompositFeatures : public FeatureBase
{
public:
typedef typename MultiArrayShape<2>::type
Shp;
ArrayVector<Shp>
ext2int;
ArrayVector<FeatureBase > sub_feats;
void add(FeatureBase & feat)
{
if(feat.shape(0) != this->shape(0))
throw std::runtime_error("Wrong Number Of samples");
sub_feats.push_back(feat);
for(int ii = 0; ii < feat.shape(1); ++ii)
ext2int.push_back(Shp(sub_feats.size()-1,
ii));
}
MultiArrayShape<2>::type shape()
{
return MultiArrayShape<2>::type(sub_feats[0].shape(0),
ext2int.size());
}
double & operator() (int i, int j)
{
return sub_feats[ext2int[j][0]](i, ext2int[j][1]);
}
};
template<int N, class T, class C>
class NeighborFeatures : public FeatureBase
{
public:
typedef typename MultiArrayShape<N>::type Shp;
MultiArrayView<N, T, C> raw_data;
ArrayVector<Shp >
feat_coos;
MultiArrayShape<2>::type shape()
{
return MultiArrayShape<2>::type(raw_data.size(),
feat_coos.size());
}
double & operator() (int i, int j)
{
return raw_data(raw_data.scanOrderIndexToCoordinate(i) + feat_coos(j));
}
NeighborFeatures(MultiArrayView<N, T, C> & in, MultiArrayView<2, int> const & coos)
: raw_data(in)
{
for(int ii = 0; ii < coos.shape(0); ++ii)
feat_coos.push_back(Shp());
for(int jj = 0; jj < coos.shape(1); ++jj)
feat_coos.back()[jj] = coos(ii, jj);
}
};
class BindFeatureColumn : public FeatureBase
{
typedef typename MultiArrayShape<N>::type Shp;
int index;
FeatureBase & underlying;
MultiArrayShape<2>::type shape()
{
return MultiArrayShape<2>::type(underlying.shape(0), 1);
}
double & operator() (int i, int j)
{
return underlying(i, index);
}
double & operator[](int i)
{
return underlying(i, index);
}
BindFeatureColumn(FeaetureBase & in, int index_)
: index(index_), underlying(in)
{
;
}
};
FeatureBase columnVector(FeatureBase & in, int ii)
{
return BindFeatureColumn(in, ii);
}
#endif
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