/usr/include/dcmtk/dcmimgle/dimoipxt.h is in libdcmtk2-dev 3.6.0-9.
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*
* Copyright (C) 1996-2010, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: dcmimgle
*
* Author: Joerg Riesmeier
*
* Purpose: DicomMonochromeInputPixelTemplate (Header)
*
* Last Update: $Author: joergr $
* Update Date: $Date: 2010-10-14 13:16:26 $
* CVS/RCS Revision: $Revision: 1.40 $
* Status: $State: Exp $
*
* CVS/RCS Log at end of file
*
*/
#ifndef DIMOIPXT_H
#define DIMOIPXT_H
#include "dcmtk/config/osconfig.h"
#include "dcmtk/ofstd/ofbmanip.h"
#include "dcmtk/ofstd/ofcast.h"
#include "dcmtk/dcmimgle/dimopxt.h"
#include "dcmtk/dcmimgle/diinpx.h"
/*---------------------*
* class declaration *
*---------------------*/
/** Template class to convert monochrome pixel data to intermediate representation
*/
template<class T1, class T2, class T3>
class DiMonoInputPixelTemplate
: public DiMonoPixelTemplate<T3>
{
public:
/** constructor
*
** @param pixel pointer to input pixel representation
* @param modality pointer to modality transform object
*/
DiMonoInputPixelTemplate(DiInputPixel *pixel,
DiMonoModality *modality)
: DiMonoPixelTemplate<T3>(pixel, modality)
{
/* erase empty part of the buffer (= blacken the background) */
if ((this->Data != NULL) && (this->InputCount < this->Count))
OFBitmanipTemplate<T3>::zeroMem(this->Data + this->InputCount, this->Count - this->InputCount);
if ((pixel != NULL) && (this->Count > 0))
{
// check whether to apply any modality transform
if ((this->Modality != NULL) && this->Modality->hasLookupTable() && (bitsof(T1) <= MAX_TABLE_ENTRY_SIZE))
{
modlut(pixel);
// ignore modality LUT min/max values since the image does not necessarily have to use all LUT entries
this->determineMinMax();
}
else if ((this->Modality != NULL) && this->Modality->hasRescaling())
{
rescale(pixel, this->Modality->getRescaleSlope(), this->Modality->getRescaleIntercept());
determineMinMax(OFstatic_cast(T3, this->Modality->getMinValue()), OFstatic_cast(T3, this->Modality->getMaxValue()));
} else {
rescale(pixel); // "copy" or reference pixel data
determineMinMax(OFstatic_cast(T3, this->Modality->getMinValue()), OFstatic_cast(T3, this->Modality->getMaxValue()));
}
}
}
/** destructor
*/
virtual ~DiMonoInputPixelTemplate()
{
}
private:
/** initialize optimization LUT
*
** @param lut reference to storage area for lookup table
* @param ocnt number of LUT entries (will be check as optimization criteria)
*
** @return status, true if successful (LUT has been created), false otherwise
*/
inline int initOptimizationLUT(T3 *&lut,
const unsigned long ocnt)
{
int result = 0;
if ((sizeof(T1) <= 2) && (this->InputCount > 3 * ocnt)) // optimization criteria
{ // use LUT for optimization
lut = new T3[ocnt];
if (lut != NULL)
{
DCMIMGLE_DEBUG("using optimized routine with additional LUT");
result = 1;
}
}
return result;
}
/** perform modality LUT transform
*
** @param input pointer to input pixel representation
*/
void modlut(DiInputPixel *input)
{
const T1 *pixel = OFstatic_cast(const T1 *, input->getData());
if ((pixel != NULL) && (this->Modality != NULL))
{
const DiLookupTable *mlut = this->Modality->getTableData();
if (mlut != NULL)
{
const int useInputBuffer = (sizeof(T1) == sizeof(T3)) && (this->Count <= input->getCount());
if (useInputBuffer) // do not copy pixel data, reference them!
{
DCMIMGLE_DEBUG("re-using input buffer, do not copy pixel data");
this->Data = OFstatic_cast(T3 *, input->getDataPtr());
input->removeDataReference(); // avoid double deletion
} else
this->Data = new T3[this->Count];
if (this->Data != NULL)
{
DCMIMGLE_DEBUG("applying modality tranformation with LUT (" << mlut->getCount() << " entries)");
register T2 value = 0;
const T2 firstentry = mlut->getFirstEntry(value); // choose signed/unsigned method
const T2 lastentry = mlut->getLastEntry(value);
const T3 firstvalue = OFstatic_cast(T3, mlut->getFirstValue());
const T3 lastvalue = OFstatic_cast(T3, mlut->getLastValue());
register const T1 *p = pixel + input->getPixelStart();
register T3 *q = this->Data;
register unsigned long i;
T3 *lut = NULL;
const unsigned long ocnt = OFstatic_cast(unsigned long, input->getAbsMaxRange()); // number of LUT entries
if (initOptimizationLUT(lut, ocnt))
{ // use LUT for optimization
const T2 absmin = OFstatic_cast(T2, input->getAbsMinimum());
q = lut;
for (i = 0; i < ocnt; ++i) // calculating LUT entries
{
value = OFstatic_cast(T2, i) + absmin;
if (value <= firstentry)
*(q++) = firstvalue;
else if (value >= lastentry)
*(q++) = lastvalue;
else
*(q++) = OFstatic_cast(T3, mlut->getValue(value));
}
const T3 *lut0 = lut - OFstatic_cast(T2, absmin); // points to 'zero' entry
q = this->Data;
for (i = this->InputCount; i != 0; --i) // apply LUT
*(q++) = *(lut0 + (*(p++)));
}
if (lut == NULL) // use "normal" transformation
{
for (i = this->InputCount; i != 0; --i)
{
value = OFstatic_cast(T2, *(p++));
if (value <= firstentry)
*(q++) = firstvalue;
else if (value >= lastentry)
*(q++) = lastvalue;
else
*(q++) = OFstatic_cast(T3, mlut->getValue(value));
}
}
delete[] lut;
}
}
}
}
/** perform rescale slope/intercept transform
*
** @param input pointer to input pixel representation
* @param slope rescale slope value (optional)
* @param intercept rescale intercept value (optional)
*/
void rescale(DiInputPixel *input,
const double slope = 1.0,
const double intercept = 0.0)
{
const T1 *pixel = OFstatic_cast(const T1 *, input->getData());
if (pixel != NULL)
{
const int useInputBuffer = (sizeof(T1) == sizeof(T3)) && (this->Count <= input->getCount()) && (input->getPixelStart() == 0);
if (useInputBuffer)
{ // do not copy pixel data, reference them!
DCMIMGLE_DEBUG("re-using input buffer, do not copy pixel data");
this->Data = OFstatic_cast(T3 *, input->getDataPtr());
input->removeDataReference(); // avoid double deletion
} else
this->Data = new T3[this->Count];
if (this->Data != NULL)
{
register T3 *q = this->Data;
register unsigned long i;
if ((slope == 1.0) && (intercept == 0.0))
{
if (!useInputBuffer)
{
register const T1 *p = pixel + input->getPixelStart();
for (i = this->InputCount; i != 0; --i) // copy pixel data: can't use copyMem because T1 isn't always equal to T3
*(q++) = OFstatic_cast(T3, *(p++));
}
} else {
DCMIMGLE_DEBUG("applying modality transformation with rescale slope = " << slope << ", intercept = " << intercept);
T3 *lut = NULL;
register const T1 *p = pixel + input->getPixelStart();
const unsigned long ocnt = OFstatic_cast(unsigned long, input->getAbsMaxRange()); // number of LUT entries
if (initOptimizationLUT(lut, ocnt))
{ // use LUT for optimization
const double absmin = input->getAbsMinimum();
q = lut;
if (slope == 1.0)
{
for (i = 0; i < ocnt; ++i) // calculating LUT entries
*(q++) = OFstatic_cast(T3, OFstatic_cast(double, i) + absmin + intercept);
} else {
if (intercept == 0.0)
{
for (i = 0; i < ocnt; ++i)
*(q++) = OFstatic_cast(T3, (OFstatic_cast(double, i) + absmin) * slope);
} else {
for (i = 0; i < ocnt; ++i)
*(q++) = OFstatic_cast(T3, (OFstatic_cast(double, i) + absmin) * slope + intercept);
}
}
const T3 *lut0 = lut - OFstatic_cast(T2, absmin); // points to 'zero' entry
q = this->Data;
for (i = this->InputCount; i != 0; --i) // apply LUT
*(q++) = *(lut0 + (*(p++)));
}
if (lut == NULL) // use "normal" transformation
{
if (slope == 1.0)
{
for (i = this->InputCount; i != 0; --i)
*(q++) = OFstatic_cast(T3, OFstatic_cast(double, *(p++)) + intercept);
} else {
if (intercept == 0.0)
{
for (i = this->InputCount; i != 0; --i)
*(q++) = OFstatic_cast(T3, OFstatic_cast(double, *(p++)) * slope);
} else {
for (i = this->InputCount; i != 0; --i)
*(q++) = OFstatic_cast(T3, OFstatic_cast(double, *(p++)) * slope + intercept);
}
}
}
delete[] lut;
}
}
}
}
};
#endif
/*
*
* CVS/RCS Log:
* $Log: dimoipxt.h,v $
* Revision 1.40 2010-10-14 13:16:26 joergr
* Updated copyright header. Added reference to COPYRIGHT file.
*
* Revision 1.39 2010-03-01 09:08:47 uli
* Removed some unnecessary include directives in the headers.
*
* Revision 1.38 2009-11-25 16:07:12 joergr
* Removed inclusion of header file "ofconsol.h". Revised logging messages.
*
* Revision 1.37 2009-10-28 14:38:16 joergr
* Fixed minor issues in log output.
*
* Revision 1.36 2009-10-28 09:53:40 uli
* Switched to logging mechanism provided by the "new" oflog module.
*
* Revision 1.35 2008-04-09 11:02:08 joergr
* Fixed wrong use of variable in "for" loop which might cause a crash.
*
* Revision 1.34 2006/08/15 16:30:11 meichel
* Updated the code in module dcmimgle to correctly compile when
* all standard C++ classes remain in namespace std.
*
* Revision 1.33 2005/12/08 16:47:51 meichel
* Changed include path schema for all DCMTK header files
*
* Revision 1.32 2004/04/21 10:00:36 meichel
* Minor modifications for compilation with gcc 3.4.0
*
* Revision 1.31 2004/02/06 11:07:50 joergr
* Distinguish more clearly between const and non-const access to pixel data.
*
* Revision 1.30 2004/01/05 14:52:20 joergr
* Removed acknowledgements with e-mail addresses from CVS log.
*
* Revision 1.29 2003/12/23 15:53:22 joergr
* Replaced post-increment/decrement operators by pre-increment/decrement
* operators where appropriate (e.g. 'i++' by '++i').
*
* Revision 1.28 2003/12/08 19:13:54 joergr
* Adapted type casts to new-style typecast operators defined in ofcast.h.
* Removed leading underscore characters from preprocessor symbols (reserved
* symbols). Updated CVS header.
*
* Revision 1.27 2003/06/12 15:08:34 joergr
* Fixed inconsistent API documentation reported by Doxygen.
*
* Revision 1.26 2003/06/02 17:06:21 joergr
* Fixed bug in optimization criterion which caused dcmimgle to ignore the
* "start frame" parameter in the DicomImage constructors under certain
* circumstances.
*
* Revision 1.25 2002/10/21 10:13:51 joergr
* Corrected wrong calculation of min/max pixel value in cases where the
* stored pixel data exceeds the expected size.
*
* Revision 1.24 2002/06/26 16:05:43 joergr
* Enhanced handling of corrupted pixel data and/or length.
*
* Revision 1.23 2001/11/13 18:10:43 joergr
* Fixed bug occurring when processing monochrome images with an odd number of
* pixels.
* Fixed bug with incorrect calculation of min/max pixel values in images with
* modality LUTs where not all LUT entries are used (previous optimization rule
* was apparently too optimistic).
*
* Revision 1.22 2001/09/28 13:07:12 joergr
* Added further robustness checks.
*
* Revision 1.21 2001/06/01 15:49:45 meichel
* Updated copyright header
*
* Revision 1.20 2000/06/02 12:40:50 joergr
* Removed debug message.
*
* Revision 1.19 2000/05/03 09:46:28 joergr
* Removed most informational and some warning messages from release built
* (#ifndef DEBUG).
*
* Revision 1.18 2000/04/28 12:32:31 joergr
* DebugLevel - global for the module - now derived from OFGlobal (MF-safe).
*
* Revision 1.17 2000/04/27 13:08:39 joergr
* Dcmimgle library code now consistently uses ofConsole for error output.
*
* Revision 1.16 2000/03/08 16:24:19 meichel
* Updated copyright header.
*
* Revision 1.15 2000/03/03 14:09:12 meichel
* Implemented library support for redirecting error messages into memory
* instead of printing them to stdout/stderr for GUI applications.
*
* Revision 1.14 1999/09/17 12:26:00 joergr
* Added/changed/completed DOC++ style comments in the header files.
* iEnhanced efficiency of some "for" loops.
*
* Revision 1.13 1999/07/23 14:04:35 joergr
* Optimized memory usage for converting input pixel data (reference instead
* of copying where possible).
*
* Revision 1.12 1999/05/03 15:43:20 joergr
* Replaced method applyOptimizationLUT by its contents (method body) to avoid
* warnings (and possible errors) on Sun CC 2.0.1 :-/
*
* Revision 1.11 1999/05/03 11:09:29 joergr
* Minor code purifications to keep Sun CC 2.0.1 quiet.
*
* Revision 1.10 1999/04/29 16:46:45 meichel
* Minor code purifications to keep DEC cxx 6 quiet.
*
* Revision 1.9 1999/04/28 14:50:35 joergr
* Introduced new scheme for the debug level variable: now each level can be
* set separately (there is no "include" relationship).
*
* Revision 1.8 1999/03/24 17:20:10 joergr
* Added/Modified comments and formatting.
*
* Revision 1.7 1999/03/02 12:02:27 joergr
* Corrected bug: when determining minimum and maximum pixel value (external)
* modality LUTs were ignored.
*
* Revision 1.6 1999/02/11 16:37:10 joergr
* Removed inline declarations from several methods.
*
* Revision 1.5 1999/02/03 17:29:19 joergr
* Added optimization LUT to transform pixel data.
*
* Revision 1.4 1999/01/20 15:06:24 joergr
* Replaced invocation of getCount() by member variable Count where possible.
* Added optimization to modality and VOI transformation (using additional
* LUTs).
*
* Revision 1.3 1998/12/22 14:29:39 joergr
* Replaced method copyMem by for-loop copying each item.
* Renamed some variables
*
* Revision 1.2 1998/12/14 17:21:09 joergr
* Added support for signed values as second entry in look-up tables
* (= first value mapped).
*
* Revision 1.1 1998/11/27 15:24:08 joergr
* Added copyright message.
* Added new cases to optimize rescaling.
* Added support for new bit manipulation class.
* Corrected bug in modality LUT transformation method.
*
* Revision 1.5 1998/07/01 08:39:23 joergr
* Minor changes to avoid compiler warnings (gcc 2.8.1 with additional
* options), e.g. add copy constructors.
*
* Revision 1.4 1998/05/11 14:53:21 joergr
* Added CVS/RCS header to each file.
*
*
*/
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