[ VIGRA Homepage | Function Index | Class Index | Namespaces | File List | Main Page ]

details AccumulatorChainArray< T, Selected, dynamic > Class Template Reference VIGRA

Create an array of accumulator chains containing the selected per-region and global statistics and their dependencies. More...

#include <vigra/accumulator.hxx>

List of all members.

Public Member Functions

void ignoreLabel (MultiArrayIndex l)
MultiArrayIndex maxRegionLabel () const
void merge (unsigned i, unsigned j)
void merge (AccumulatorChainArray const &o)
template<class ArrayLike >
void merge (AccumulatorChainArray const &o, ArrayLike const &labelMapping)
void operator+= (AccumulatorChainImpl const &o)
unsigned int regionCount () const
void reset (unsigned int reset_to_pass=0)
void setHistogramOptions (HistogramOptions const &options)
void setHistogramOptions (HistogramOptions const &regionoptions, HistogramOptions const &globaloptions)
void setMaxRegionLabel (unsigned label)
void updatePassN (T const &t, unsigned int N)
void updatePassN (T const &t, double weight, unsigned int N)

Static Public Member Functions

static ArrayVector
< std::string > const & 
tagNames ()

Detailed Description

template<class T, class Selected, bool dynamic = false>
class vigra::acc::AccumulatorChainArray< T, Selected, dynamic >

Create an array of accumulator chains containing the selected per-region and global statistics and their dependencies.

AccumulatorChainArray is used to compute per-region statistics (as well as global statistics). The statistics are selected at compile-time. An array of accumulator chains (one per region) for region statistics is created and one accumulator chain for global statistics. The region labels always start at 0. Use the Global modifier to compute global statistics (by default per-region statistics are computed).

The template parameters are as follows:

Usage:

    const int dim = 3; //dimension of MultiArray
    typedef double DataType;
    typedef double WeightType;
    typedef unsigned int LabelType;
    typedef vigra::CoupledIteratorType<dim, DataType, WeightType, LabelType>::HandleType Handle;
    AccumulatorChainArray<Handle, Select<DataArg<1>, WeightArg<2>, LabelArg<3>, Mean, Variance, ...> > a;

See Feature Accumulators for more information and examples of use.


Member Function Documentation

Statistics will not be computed for label l. Note that only one label can be ignored.

void setMaxRegionLabel ( unsigned  label)

Set the maximum region label (e.g. for merging two accumulator chains).

Maximum region label. (equal to regionCount() - 1)

unsigned int regionCount ( ) const

Number of Regions. (equal to maxRegionLabel() + 1)

void merge ( unsigned  i,
unsigned  j 
)

Merge region i with region j.

void merge ( AccumulatorChainArray< T, Selected, dynamic > const &  o)

Merge with accumulator chain o. maxRegionLabel() of the two accumulators must be equal.

void merge ( AccumulatorChainArray< T, Selected, dynamic > const &  o,
ArrayLike const &  labelMapping 
)

Merge with accumulator chain o using a mapping between labels of the two accumulators. Label l of accumulator chain o is mapped to labelMapping[l]. Hence, all elements of labelMapping must be <= maxRegionLabel() and size of labelMapping must match o.regionCount().

static ArrayVector<std::string> const& tagNames ( ) [static]

Return names of all tags in the accumulator chain (selected statistics and their dependencies).

void setHistogramOptions ( HistogramOptions const &  options)

Set options for all histograms in the accumulator chain. See histogram accumulators for possible options. The function is ignored if there is no histogram in the accumulator chain.

void setHistogramOptions ( HistogramOptions const &  regionoptions,
HistogramOptions const &  globaloptions 
)

Set regional and global options for all histograms in the accumulator chain.

void reset ( unsigned int  reset_to_pass = 0)

Reset current_pass_ of the accumulator chain to 'reset_to_pass'.

void operator+= ( AccumulatorChainImpl const &  o)

Equivalent to merge(o) .

void updatePassN ( T const &  t,
unsigned int  N 
)

Upate all accumulators in the accumulator chain that work in pass N with data t. Requirement: 0 < N < 6 and N >= current_pass_ . If N < current_pass_ call reset first.

void updatePassN ( T const &  t,
double  weight,
unsigned int  N 
)

Upate all accumulators in the accumulator chain that work in pass N with data t and weight. Requirement: 0 < N < 6 and N >= current_pass_ . If N < current_pass_ call reset first.


The documentation for this class was generated from the following file:

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

html generated using doxygen and Python
vigra 1.9.0 (Tue Nov 6 2012)