core/distance.hh File Reference

#include <vector>
#include <algorithm>
#include <limits>
#include <iterator>
#include <mia/core/defines.hh>

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Functions
void EXPORT_CORE	distance_transform_inplace (std::vector< float > &r)
template<typename InputIterator , typename OutputIterator >
void	distance_transform_prepare (InputIterator in_begin, InputIterator in_end, OutputIterator out_begin, bool to_mask)

Function Documentation

distance_transform_inplace()

void EXPORT_CORE distance_transform_inplace

(

std::vector< float > &

r

)

This function evaluates the 1D distance transform of an input function. If the input function is given as raw data that is not the result of another call to this distance transform function, then one should call distance_transform_prepare to properly prepare the data for the distance transform.

Parameters

[in,out]

r

at input the squared values of the function to evaluate the distance to at output it contains the squared distances.

distance_transform_prepare()

template<typename InputIterator , typename OutputIterator >

void distance_transform_prepare	(	InputIterator	in_begin,
		InputIterator	in_end,
		OutputIterator	out_begin,
		bool	to_mask
	)

This function evaluates prepares data for the use in a distance transform. The input values are interpreted differently depending on the input data type: If the values are given as boolean values then it is assumed that they belong to a mask, and at each location x where f(x)==true, the function is assumed to be zero, and at each f(x)==false the function is assumed to be inf+ (given as numeric_limits<float>::max()). Otherwiese the values are interpreted directly, and the preparation for the dist-transform consists in evaluating the square of each value

Template Parameters

InputIterator	input data iterator
OutputIterator	output data iterator

Parameters

in_begin	start of the input data range
in_end	end of the input data range
out_begin	begin of the output data container, note that the output container must at least hold as many values as the input data range provides. This is not tested.
to_mask	set to true if the input data is a mask, to false if the input data is a height field

Definition at line 62 of file core/distance.hh.

References NS_MIA_END.