nemo::FirstOrderFilter< ValueType, NormType > Class Template Reference

This Mapping implements a temporal filter that clamps differences between successively presented values. More...

#include <Filters.h>

List of all members.

Public Member Functions
ValueType	evaluate (ValueType value) const
	Compute the outut value for a given input value.
Static Public Member Functions
static Mapping< ValueType, ValueType >	create (NormType maxDiffNormP, Mapping< ValueType, NormType > normP, ValueType initValue)

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Detailed Description

template<class ValueType, class NormType>
class nemo::FirstOrderFilter< ValueType, NormType >

This Mapping implements a temporal filter that clamps differences between successively presented values.

A norm over differences must be specified at construction time. Thereby a norm is a Mapping from the ValueType to a scalar type, for instance the Euclidean Norm RealVector->double. In general, this could be anything, but it must guarantee that for any value x:

• norm( (1/norm(x)) * x) == 1.

An example of the input-output logic for ValueType=double, norm=abs() and a max. difference of 0.4 is

• filter(0.0) == 0.0
• filter(1.0) == 0.4
• filter(1.0) == 0.8
• filter(1.0) == 1.0
• filter(0.0) == 0.6

This filter is tested for scalar as well as Vector types:

• Mapping<double,double> d = FirstOrderFilter<double,double>::create(0.25, new AbsNorm(), 0.0);
• Mapping<RealVector,RealVector> d = FirstOrderFilter<RealVector,double>::create( 0.25, new EuclideanNorm(), RealVector(0.0,0.0) );

Definition at line 32 of file Filters.h.

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Member Function Documentation

template<class ValueType , class NormType >

static Mapping<ValueType,ValueType> nemo::FirstOrderFilter< ValueType, NormType >::create	(	NormType	maxDiffNormP,
		Mapping< ValueType, NormType >	normP,
		ValueType	initValue
	)			[inline, static]

Definition at line 37 of file Filters.h.

template<class ValueType , class NormType >

ValueType nemo::FirstOrderFilter< ValueType, NormType >::evaluate

(

ValueType

value

)

const [inline, virtual]

Compute the outut value for a given input value.

Implements nemo::MappingDefinition< ValueType, ValueType >.

Definition at line 45 of file Filters.h.

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

• nemo/Filters.h