#include <CGAL/Classification/Feature/Echo_scatter.h>

Inherits from

Definition

Feature based on echo scatter.

The number of returns (echo number) is a useful information provided by most LIDAR sensors. It can help to identify trees.

Its default name is "echo_scatter".

Template Parameters

GeomTraits	model of CGAL Kernel.
PointRange	model of `ConstRange`. Its iterator type is `RandomAccessIterator` and its value type is the key type of `PointMap`.
PointMap	model of `ReadablePropertyMap` whose key type is the value type of the iterator of `PointRange` and value type is `GeomTraits::Point_3`.
EchoMap	model of `ReadablePropertyMap` whose key type is the value type of the iterator of `PointRange` and value type is `std::size_t`.

Public Types
typedef Classification::Planimetric_grid< GeomTraits, PointRange, PointMap >	Grid

Public Member Functions
	Echo_scatter (const PointRange &input, EchoMap echo_map, const Grid &grid, float radius_neighbors=1.)
	Constructs the feature. More...

Public Member Functions inherited from CGAL::Classification::Feature_base
const std::string &	name () const
	Returns the name of the feature (initialized to `abstract_feature` for `Feature_base`).

void	set_name (const std::string &name)
	Changes the name of the feature.

virtual float	value (std::size_t index)=0
	Returns the value taken by the feature for at the item for the item at position `index`. More...

template<typename GeomTraits , typename PointRange , typename PointMap , typename EchoMap >

CGAL::Classification::Feature::Echo_scatter< GeomTraits, PointRange, PointMap, EchoMap >::Echo_scatter	(	const PointRange &	input,
		EchoMap	echo_map,
		const Grid &	grid,
		float	radius_neighbors = `1.`
	)

Constructs the feature.

Parameters

input	point range.
echo_map	property map to access the echo values of the input points.
grid	precomputed `Planimetric_grid`.
radius_neighbors	radius of local neighborhoods.