DiScaleTemplate< T > Class Template Reference

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

Inheritance diagram for DiScaleTemplate< T >:

DiTransTemplate< T > DiColorScaleTemplate< T > DiMonoScaleTemplate< 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)

Detailed Description

template<class T>
class DiScaleTemplate< T >

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

with and without interpolation

Definition at line 106 of file discalet.h.

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

Definition at line 126 of file discalet.h.

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

Definition at line 155 of file discalet.h.

Member Function Documentation

template<class T>
int DiScaleTemplate< T >::isSigned (  )  const [inline]

check whether template type T is signed or not

Returns:
true if signed, false otherwise

Definition at line 180 of file discalet.h.

References DiPixelRepresentationTemplate< T >::isSigned().

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)

Definition at line 194 of file discalet.h.

References DiScaleTemplate< T >::bicubicPixel(), DiScaleTemplate< T >::bilinearPixel(), DiScaleTemplate< T >::clipBorderPixel(), DiScaleTemplate< T >::clipPixel(), DiScaleTemplate< T >::Columns, DiTransTemplate< T >::copyPixel(), DiScaleTemplate< T >::expandPixel(), DiTransTemplate< T >::fillPixel(), DiScaleTemplate< T >::interpolatePixel(), DiScaleTemplate< T >::Left, DiScaleTemplate< T >::reducePixel(), DiScaleTemplate< T >::replicatePixel(), DiScaleTemplate< T >::Rows, DiScaleTemplate< T >::scalePixel(), DiScaleTemplate< T >::suppressPixel(), and DiScaleTemplate< T >::Top.

Referenced by DiMonoScaleTemplate< T >::scale(), and DiColorScaleTemplate< T >::scale().

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

Definition at line 264 of file discalet.h.

References DiScaleTemplate< T >::Columns, DiScaleTemplate< T >::Left, DiTransTemplate< T >::Planes, DiScaleTemplate< T >::Rows, DiTransTemplate< T >::Src_X, and DiScaleTemplate< T >::Top.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 297 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 373 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 419 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 456 of file discalet.h.

References OFBitmanipTemplate< T >::setMem().

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 535 of file discalet.h.

References DicomImageClass::maxval().

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 697 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 795 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 884 of file discalet.h.

Referenced by DiScaleTemplate< T >::scaleData().

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

Definition at line 1004 of file discalet.h.

References DicomImageClass::maxval().

Referenced by DiScaleTemplate< T >::scaleData().

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

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