CIccEvalCompare Class Reference

#include <IccEval.h>

Inheritance diagram for CIccEvalCompare:

Public Member Functions
virtual void	Compare (icFloatNumber *pPixel, icFloatNumber *deviceLab, icFloatNumber *destLab1, icFloatNumber *destLab2)=0
icStatusCMM ICCPROFLIB_API	EvaluateProfile (CIccProfile *pProfile, icUInt8Number nGran=0, icRenderingIntent nIntent=icUnknownIntent, icXformInterp nInterp=icInterpLinear, bool buseMpeTags=true)
icStatusCMM ICCPROFLIB_API	EvaluateProfile (const icChar *szProfilePath, icUInt8Number nGran=0, icRenderingIntent nIntent=icUnknownIntent, icXformInterp nInterp=icInterpLinear, bool buseMpeTags=true)

Detailed Description

Member Function Documentation

Compare()

virtual void CIccEvalCompare::Compare ( icFloatNumber *  pPixel, icFloatNumber *  deviceLab, icFloatNumber *  destLab1, icFloatNumber *  destLab2  )

pure virtual

Implemented in CIccMinMaxEval, and CIccMinMaxEval.

Referenced by EvaluateProfile().

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EvaluateProfile() [1/2]

icStatusCMM CIccEvalCompare::EvaluateProfile	(	CIccProfile *	pProfile,
		icUInt8Number	nGran = 0,
		icRenderingIntent	nIntent = icUnknownIntent,
		icXformInterp	nInterp = icInterpLinear,
		bool	buseMpeTags = true
	)

{
  if (!pProfile)
  {
    return icCmmStatCantOpenProfile;
  }
 
  if (pProfile->m_Header.deviceClass!=icSigInputClass &&
    pProfile->m_Header.deviceClass!=icSigDisplayClass &&
    pProfile->m_Header.deviceClass!=icSigOutputClass &&
    pProfile->m_Header.deviceClass!=icSigColorSpaceClass)
  {
    return icCmmStatInvalidProfile;
  }
 
  CIccCmm dev2Lab(icSigUnknownData, icSigLabData);
  CIccCmm Lab2Dev2Lab(icSigLabData, icSigLabData, false);
 
  icStatusCMM result;
 
  result = dev2Lab.AddXform(*pProfile, nIntent, nInterp, NULL, icXformLutColorimetric, buseMpeTags);
 
  if (result!=icCmmStatOk) {
    return result;
  }
 
  result = dev2Lab.Begin();
  if (result != icCmmStatOk) {
    return result;
  }
 
  result = Lab2Dev2Lab.AddXform(*pProfile, nIntent, nInterp, NULL, icXformLutColorimetric, buseMpeTags);
  if (result != icCmmStatOk) {
    return result;
  }
 
  result = Lab2Dev2Lab.AddXform(*pProfile, nIntent, nInterp, NULL, icXformLutColorimetric, buseMpeTags);
  if (result != icCmmStatOk) {
    return result;
  }
 
  result = Lab2Dev2Lab.Begin();
  if (result != icCmmStatOk) {
    return result;
  }
 
  icFloatNumber sPixel[15];
  icFloatNumber devPcs[15], roundPcs1[15], roundPcs2[15];
 
  int ndim = icGetSpaceSamples(pProfile->m_Header.colorSpace);
  int ndim1 = ndim+1;
 
  // determine granularity
  if (!nGran)
  {
    CIccTagLutAtoB* pTag = (CIccTagLutAtoB*)pProfile->FindTag(icSigAToB0Tag+(nIntent==icAbsoluteColorimetric ? icRelativeColorimetric : nIntent));
    if (!pTag || ndim==3)
    {
      nGran = 33;
    }
    else {
      CIccCLUT* pClut = pTag->GetCLUT();
      if (pClut)
        nGran = pClut->GridPoints()+2;
      else
        nGran = 33;
    }
  }
 
  int i, j;
  icFloatNumber stepsize = (icFloatNumber)(1.0 / (icFloatNumber)(nGran - 1));
  icFloatNumber* steps = new icFloatNumber[ndim1];
 
  icFloatNumber nstart = 0.0;
  icFloatNumber nEnd = (icFloatNumber)(1.0 + stepsize / 2.0);
 
  // Initialize all step values to zero
  for (j = 0; j < ndim1; j++) {
      steps[j] = nstart;
  }
 
  // Multidimensional iterator loop
  while (steps[0] == nstart) {
      for (j = 0; j < ndim; j++) {
          sPixel[j] = icMin(steps[j + 1], 1.0);
      }
 
      // Increment step value
      steps[ndim] += stepsize;
 
      // Carry over logic
      for (i = ndim; i > 0; i--) {
          if (steps[i] > nEnd) {
              steps[i] = nstart;
              steps[i - 1] += stepsize;
          }
          else {
              break;
          }
      }
 
    dev2Lab.Apply(devPcs, sPixel); //Convert device value to pcs from input table
    Lab2Dev2Lab.Apply(roundPcs1, devPcs);  //First round trip gets color into output gamut
    Lab2Dev2Lab.Apply(roundPcs2, roundPcs1);  //Second round trip find reproducibility error
 
    icLabFromPcs(devPcs);
    icLabFromPcs(roundPcs1);
    icLabFromPcs(roundPcs2);
 
    Compare(sPixel, devPcs, roundPcs1, roundPcs2);
  }
 
  delete[] steps;
  
  return icCmmStatOk;
}

References icHeader::colorSpace, Compare(), icHeader::deviceClass, CIccMBB::GetCLUT(), CIccCLUT::GridPoints(), icAbsoluteColorimetric, icCmmStatCantOpenProfile, icCmmStatInvalidProfile, icCmmStatOk, icGetSpaceSamples(), icLabFromPcs(), icMin(), icRelativeColorimetric, icSigAToB0Tag, icSigColorSpaceClass, icSigDisplayClass, icSigInputClass, icSigLabData, icSigOutputClass, and icXformLutColorimetric.

Referenced by EvaluateProfile().

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EvaluateProfile() [2/2]

icStatusCMM CIccEvalCompare::EvaluateProfile	(	const icChar *	szProfilePath,
		icUInt8Number	nGran = 0,
		icRenderingIntent	nIntent = icUnknownIntent,
		icXformInterp	nInterp = icInterpLinear,
		bool	buseMpeTags = true
	)

{
  CIccProfile *pProfile = ReadIccProfile(szProfilePath);
 
  if (!pProfile) 
    return icCmmStatCantOpenProfile;
 
  icStatusCMM result = EvaluateProfile(pProfile, nGrid, nIntent, nInterp, buseMpeTags);
 
  delete pProfile;
 
  return result;
}

References CIccProfile, EvaluateProfile(), icCmmStatCantOpenProfile, and ReadIccProfile().

Referenced by main().

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

• IccProfLib/IccEval.h
• IccProfLib/IccEval.cpp