DiScaleTemplate< T > Class Template Reference

Template class to scale images (on pixel data level). More...

Inheritance diagram for DiScaleTemplate< T >:

List of all members.

Public Member Functions
	DiScaleTemplate (const int planes, const Uint16 columns, const Uint16 rows, const signed long left_pos, const signed long top_pos, const Uint16 src_cols, const Uint16 src_rows, const Uint16 dest_cols, const Uint16 dest_rows, const Uint32 frames, const int bits=0)
	constructor, scale clipping area.
	DiScaleTemplate (const int planes, const Uint16 src_cols, const Uint16 src_rows, const Uint16 dest_cols, const Uint16 dest_rows, const Uint32 frames, const int bits=0)
	constructor, scale whole image.
virtual	~DiScaleTemplate ()
	destructor
int	isSigned () const
	check whether template type T is signed or not
void	scaleData (const T *src[], T *dest[], const int interpolate, const T value=0)
	choose scaling/clipping algorithm depending on specified parameters.
Protected Attributes
const signed long	Left
	left coordinate of clipping area
const signed long	Top
	top coordinate of clipping area
const Uint16	Columns
	width of source image
const Uint16	Rows
	height of source image
Private Member Functions
void	clipPixel (const T *src[], T *dest[])
	clip image to specified area (only inside image boundaries).
void	clipBorderPixel (const T *src[], T *dest[], const T value)
	clip image to specified area and add a border if necessary
void	replicatePixel (const T *src[], T *dest[])
	enlarge image by an integer factor.
void	suppressPixel (const T *src[], T *dest[])
	shrink image by an integer divisor.
void	scalePixel (const T *src[], T *dest[])
	free scaling method without interpolation.
void	interpolatePixel (const T *src[], T *dest[])
	free scaling method with interpolation
void	expandPixel (const T *src[], T *dest[])
	free scaling method with interpolation (only for magnification)
void	reducePixel (const T *src[], T *dest[])
	free scaling method with interpolation (only for reduction)
void	bilinearPixel (const T *src[], T *dest[])
	bilinear interpolation method (only for magnification)
void	bicubicPixel (const T *src[], T *dest[])
	bicubic interpolation method (only for magnification)

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Detailed Description

template<class T>
class DiScaleTemplate< T >

Template class to scale images (on pixel data level).

with and without interpolation

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Constructor & Destructor Documentation

template<class T >

DiScaleTemplate< T >::DiScaleTemplate	(	const int	planes,
		const Uint16	columns,
		const Uint16	rows,
		const signed long	left_pos,
		const signed long	top_pos,
		const Uint16	src_cols,
		const Uint16	src_rows,
		const Uint16	dest_cols,
		const Uint16	dest_rows,
		const Uint32	frames,
		const int	bits = 0
	)		[inline]

constructor, scale clipping area.

Parameters:

planes	number of planes (1 or 3)
columns	width of source image
rows	height of source image
left_pos	left coordinate of clipping area
top_pos	top coordinate of clipping area
src_cols	width of clipping area
src_rows	height of clipping area
dest_cols	width of destination image (scaled image)
dest_rows	height of destination image
frames	number of frames
bits	number of bits per plane/pixel

template<class T >

DiScaleTemplate< T >::DiScaleTemplate	(	const int	planes,
		const Uint16	src_cols,
		const Uint16	src_rows,
		const Uint16	dest_cols,
		const Uint16	dest_rows,
		const Uint32	frames,
		const int	bits = 0
	)		[inline]

constructor, scale whole image.

Parameters:

planes	number of planes (1 or 3)
src_cols	width of source image
src_rows	height of source image
dest_cols	width of destination image (scaled image)
dest_rows	height of destination image
frames	number of frames
bits	number of bits per plane/pixel

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Member Function Documentation

template<class T >

void DiScaleTemplate< T >::bicubicPixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

bicubic interpolation method (only for magnification)

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::bilinearPixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

bilinear interpolation method (only for magnification)

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::clipBorderPixel	(	const T *	src[],
		T *	dest[],
		const T	value
	)		[inline, private]

clip image to specified area and add a border if necessary

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels
value	value to be set outside the image boundaries

template<class T >

void DiScaleTemplate< T >::clipPixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

clip image to specified area (only inside image boundaries).

This is an optimization of the more general method clipBorderPixel().

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::expandPixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

free scaling method with interpolation (only for magnification)

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::interpolatePixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

free scaling method with interpolation

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

int DiScaleTemplate< T >::isSigned

(

)

const [inline]

check whether template type T is signed or not

Returns:

true if signed, false otherwise

template<class T >

void DiScaleTemplate< T >::reducePixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

free scaling method with interpolation (only for reduction)

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::replicatePixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

enlarge image by an integer factor.

Pixels are replicated independently in both directions.

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::scaleData	(	const T *	src[],
		T *	dest[],
		const int	interpolate,
		const T	value = 0
	)		[inline]

choose scaling/clipping algorithm depending on specified parameters.

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels
interpolate	preferred interpolation algorithm (0 = no interpolation, 1 = pbmplus algorithm, 2 = c't algorithm, 3 = bilinear magnification, 4 = bicubic magnification)
value	value to be set outside the image boundaries (used for clipping, default: 0)

template<class T >

void DiScaleTemplate< T >::scalePixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

free scaling method without interpolation.

This algorithm is necessary for overlays (1 bpp).

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

template<class T >

void DiScaleTemplate< T >::suppressPixel	(	const T *	src[],
		T *	dest[]
	)		[inline, private]

shrink image by an integer divisor.

Pixels are suppressed independently in both directions.

Parameters:

src	array of pointers to source image pixels
dest	array of pointers to destination image pixels

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

• dcmimgle/include/dcmtk/dcmimgle/discalet.h