refinery::GammaCurve< T > Class Template Reference

A gamma curve, mapping input scalars to output scalars. More...

#include <refinery/gamma.h>

List of all members.

Public Types
typedef std::vector< T >	CurveType
	Color value type.
Public Member Functions
	GammaCurve (double pwr, double ts, T max)
	Constructor.
template<typename HistogramType >
	GammaCurve (const HistogramType &histogram)
	Constructor.
	GammaCurve (const GammaCurve &rhs)
	Copy constructor.
const T &	at (const T &in) const
	Gamma-correct a color value.

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Detailed Description

template<typename T>
class refinery::GammaCurve< T >

A gamma curve, mapping input scalars to output scalars.

The GammaCurve is pre-calculated into a lookup table during construction, after which any scalar can be converted using at().

Template Parameters:

T	Color value type, see Image::ValueType.

See also:

GammaFilter

Examples:

util/raw2ppm.cc.

Definition at line 20 of file gamma.h.

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Member Typedef Documentation

template<typename T>

typedef std::vector<T> refinery::GammaCurve< T >::CurveType

Color value type.

Definition at line 22 of file gamma.h.

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Constructor & Destructor Documentation

template<typename T>

refinery::GammaCurve< T >::GammaCurve	(	double	pwr,
		double	ts,
		T	max
	)		[inline]

Constructor.

Parameters:

[in]	pwr	Gamma exponent, for instance 0.45.
[in]	ts	I don't know.
[in]	max	Lowest input value corresponding to max.

Definition at line 78 of file gamma.h.

template<typename T>

template<typename HistogramType >

refinery::GammaCurve< T >::GammaCurve

(

const HistogramType &

histogram

)

[inline]

Constructor.

This uses the Histogram-supplied image data to decide on GammaCurve parameters so that when the GammaCurve is applied (through GammaFilter) to the original image, 1% of the output image will be white.

The supplied histogram doesn't need to be around for the lifetime of this object.

Parameters:

[in]

histogram

Histogram to analyze to calculate curve.

Template Parameters:

HistogramType

Type of histogram (usually inferred).

Definition at line 95 of file gamma.h.

template<typename T>

refinery::GammaCurve< T >::GammaCurve

(

const GammaCurve< T > &

rhs

)

[inline]

Copy constructor.

Parameters:

rhs	Other GammaCurve, to be deep-copied.

Definition at line 122 of file gamma.h.

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

• include/refinery/gamma.h