X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fimagefile.cpp;h=51a8dea82e94f2924671f0a9998119b055963990;hp=3a1483dffd89a6a6b7a6e3f98c548fd9da3ab913;hb=f13a8c004b8f182b42d9e4df2bcd7c7f030bf1ad;hpb=3fba6928127cd65870bdcd96c8114ad5894247ae diff --git a/libctsim/imagefile.cpp b/libctsim/imagefile.cpp index 3a1483d..51a8dea 100644 --- a/libctsim/imagefile.cpp +++ b/libctsim/imagefile.cpp @@ -1,15 +1,13 @@ /***************************************************************************** ** FILE IDENTIFICATION ** -** Name: imagefile.cpp -** Purpose: Imagefile classes -** Programmer: Kevin Rosenberg -** Date Started: June 2000 +** Name: imagefile.cpp +** Purpose: Imagefile classes +** Programmer: Kevin Rosenberg +** Date Started: June 2000 ** ** This is part of the CTSim program -** Copyright (C) 1983-2000 Kevin Rosenberg -** -** $Id: imagefile.cpp,v 1.8 2000/07/13 07:03:21 kevin Exp $ +** Copyright (c) 1983-2009 Kevin Rosenberg ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License (version 2) as @@ -25,265 +23,1676 @@ ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ******************************************************************************/ -#include "ct.h" +#include "ct.h" +#ifdef HAVE_CTN_DICOM +#include "ctndicom.h" +#endif +#include "interpolator.h" + +const double ImageFile::s_dRedGrayscaleFactor = 0.299; +const double ImageFile::s_dGreenGrayscaleFactor = 0.587; +const double ImageFile::s_dBlueGrayscaleFactor = 0.114; + + +const int ImageFile::EXPORT_FORMAT_INVALID = -1; +const int ImageFile::EXPORT_FORMAT_TEXT = 0; +const int ImageFile::EXPORT_FORMAT_PGM = 1; +const int ImageFile::EXPORT_FORMAT_PGMASCII = 2; +#ifdef HAVE_PNG +const int ImageFile::EXPORT_FORMAT_PNG = 3; +const int ImageFile::EXPORT_FORMAT_PNG16 = 4; +#endif +#ifdef HAVE_CTN_DICOM +const int ImageFile::EXPORT_FORMAT_DICOM = 5; +#endif +const int ImageFile::EXPORT_FORMAT_RAW = 6; + +const char* ImageFile::s_aszExportFormatName[] = +{ + "text", + "pgm", + "pgmascii", +#ifdef HAVE_PNG + "png", + "png16", +#endif +#ifdef HAVE_CTN_DICOM + "dicom", +#endif +}; + +const char* ImageFile::s_aszExportFormatTitle[] = +{ + "Text", + "PGM", + "PGM ASCII", +#ifdef HAVE_PNG + "PNG", + "PNG 16-bit", +#endif +#ifdef HAVE_CTN_DICOM + "Dicom", +#endif +}; +const int ImageFile::s_iExportFormatCount = sizeof(s_aszExportFormatName) / sizeof(const char*); + + +const int ImageFile::IMPORT_FORMAT_INVALID = -1; +const int ImageFile::IMPORT_FORMAT_PPM = 0; +#ifdef HAVE_PNG +const int ImageFile::IMPORT_FORMAT_PNG = 1; +#endif +#ifdef HAVE_CTN_DICOM +const int ImageFile::IMPORT_FORMAT_DICOM = 2; +#endif + + +const char* ImageFile::s_aszImportFormatName[] = +{ + "ppm", +#ifdef HAVE_PNG + "png", +#endif +#ifdef HAVE_CTN_DICOM + "dicom", +#endif +}; + +const char* ImageFile::s_aszImportFormatTitle[] = +{ + "PPM", +#ifdef HAVE_PNG + "PNG", +#endif +#ifdef HAVE_CTN_DICOM + "Dicom", +#endif +}; +const int ImageFile::s_iImportFormatCount = sizeof(s_aszImportFormatName) / sizeof(const char*); + + + +F32Image::F32Image (int nx, int ny, int dataType) +: Array2dFile (nx, ny, sizeof(kfloat32), Array2dFile::PIXEL_FLOAT32, dataType) +{ +} + +F32Image::F32Image (void) +: Array2dFile() +{ + setPixelFormat (Array2dFile::PIXEL_FLOAT32); + setPixelSize (sizeof(kfloat32)); + setDataType (Array2dFile::DATA_TYPE_REAL); +} + +F64Image::F64Image (int nx, int ny, int dataType) +: Array2dFile (nx, ny, sizeof(kfloat64), Array2dFile::PIXEL_FLOAT64, dataType) +{ +} + +F64Image::F64Image (void) +: Array2dFile () +{ + setPixelFormat (PIXEL_FLOAT64); + setPixelSize (sizeof(kfloat64)); + setDataType (Array2dFile::DATA_TYPE_REAL); +} + +void +ImageFile::getCenterCoordinates (unsigned int& iXCenter, unsigned int& iYCenter) +{ + if (isEven (m_nx)) + iXCenter = m_nx / 2; + else + iXCenter = (m_nx - 1) / 2; + + if (isEven (m_ny)) + iYCenter = m_ny / 2; + else + iYCenter = (m_ny - 1) / 2; +} + + +void +ImageFile::filterResponse (const char* const domainName, double bw, const char* const filterName, + double filt_param, double dInputScale, double dOutputScale) +{ + ImageFileArray v = getArray(); + SignalFilter filter (filterName, domainName, bw, filt_param); + + unsigned int iXCenter, iYCenter; + getCenterCoordinates (iXCenter, iYCenter); + + for (unsigned int ix = 0; ix < m_nx; ix++) + for (unsigned int iy = 0; iy < m_ny; iy++) { + long lD2 = ((ix - iXCenter) * (ix - iXCenter)) + ((iy - iYCenter) * (iy - iYCenter)); + double r = ::sqrt (static_cast(lD2)) * dInputScale; + v[ix][iy] = filter.response (r) * dOutputScale; + } +} + + +// ImageFile::comparativeStatistics Calculate comparative stats +// +// OUTPUT +// d Normalized root mean squared distance measure +// r Normalized mean absolute distance measure +// e Worst case distance measure +// +// REFERENCES +// G.T. Herman, Image Reconstruction From Projections, 1980 + +bool +ImageFile::comparativeStatistics (const ImageFile& imComp, double& d, double& r, double& e) const +{ + if (imComp.nx() != m_nx && imComp.ny() != m_ny) { + sys_error (ERR_WARNING, "Image sizes differ [ImageFile::comparativeStatistics]"); + return false; + } + ImageFileArrayConst v = getArray(); + if (v == NULL || m_nx == 0 || m_ny == 0) + return false; + + ImageFileArrayConst vComp = imComp.getArray(); + + double myMean = 0.; + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + myMean += v[ix][iy]; + } + } + myMean /= (m_nx * m_ny); + + double sqErrorSum = 0.; + double absErrorSum = 0.; + double sqDiffFromMeanSum = 0.; + double absValueSum = 0.; + for (unsigned int ix2 = 0; ix2 < m_nx; ix2++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + double diff = v[ix2][iy] - vComp[ix2][iy]; + sqErrorSum += diff * diff; + absErrorSum += fabs(diff); + double diffFromMean = v[ix2][iy] - myMean; + sqDiffFromMeanSum += diffFromMean * diffFromMean; + absValueSum += fabs(v[ix2][iy]); + } + } + + d = ::sqrt (sqErrorSum / sqDiffFromMeanSum); + r = absErrorSum / absValueSum; + + int hx = m_nx / 2; + int hy = m_ny / 2; + double eMax = -1; + for (int ix3 = 0; ix3 < hx; ix3++) { + for (int iy = 0; iy < hy; iy++) { + double avgPixel = 0.25 * (v[2*ix3][2*iy] + v[2*ix3+1][2*iy] + v[2*ix3][2*iy+1] + v[2*ix3+1][2*iy+1]); + double avgPixelComp = 0.25 * (vComp[2*ix3][2*iy] + vComp[2*ix3+1][2*iy] + vComp[2*ix3][2*iy+1] + vComp[2*ix3+1][2*iy+1]); + double error = fabs (avgPixel - avgPixelComp); + if (error > eMax) + eMax = error; + } + } + + e = eMax; + + return true; +} + + +bool +ImageFile::printComparativeStatistics (const ImageFile& imComp, std::ostream& os) const +{ + double d, r, e; + + if (comparativeStatistics (imComp, d, r, e)) { + os << " Normalized root mean squared distance (d): " << d << std::endl; + os << " Normalized mean absolute distance (r): " << r << std::endl; + os << "Worst case distance (2x2 pixel average) (e): " << e << std::endl; + return true; + } + return false; +} + + +void +ImageFile::printStatistics (std::ostream& os) const +{ + double min, max, mean, mode, median, stddev; + + statistics (min, max, mean, mode, median, stddev); + if (isComplex()) + os << "Real Component Statistics" << std::endl; + + os << " min: " << min << std::endl; + os << " max: " << max << std::endl; + os << " mean: " << mean << std::endl; + os << " mode: " << mode << std::endl; + os << "median: " << median << std::endl; + os << "stddev: " << stddev << std::endl; + + if (isComplex()) { + statistics (getImaginaryArray(), min, max, mean, mode, median, stddev); + os << std::endl << "Imaginary Component Statistics" << std::endl; + os << " min: " << min << std::endl; + os << " max: " << max << std::endl; + os << " mean: " << mean << std::endl; + os << " mode: " << mode << std::endl; + os << "median: " << median << std::endl; + os << "stddev: " << stddev << std::endl; + } +} + + +void +ImageFile::statistics (double& min, double& max, double& mean, double& mode, double& median, double& stddev) const +{ + ImageFileArrayConst v = getArray(); + statistics (v, min, max, mean, mode, median, stddev); +} + + +void +ImageFile::statistics (ImageFileArrayConst v, double& min, double& max, double& mean, double& mode, double& median, double& stddev) const +{ + int nx = m_nx; + int ny = m_ny; + + if (v == NULL || nx == 0 || ny == 0) + return; + + std::vector vecImage; + int iVec = 0; + vecImage.resize (nx * ny); + for (int ix = 0; ix < nx; ix++) { + for (int iy = 0; iy < ny; iy++) + vecImage[iVec++] = v[ix][iy]; + } + + vectorNumericStatistics (vecImage, nx * ny, min, max, mean, mode, median, stddev); +} + +void +ImageFile::getMinMax (double& min, double& max) const +{ + int nx = m_nx; + int ny = m_ny; + ImageFileArrayConst v = getArray(); + + if (v == NULL || nx == 0 || ny == 0) + return; + + min = v[0][0]; + max = v[0][0]; + for (int ix = 0; ix < nx; ix++) { + for (int iy = 0; iy < ny; iy++) { + if (v[ix][iy] > max) + max = v[ix][iy]; + if (v[ix][iy] < min) + min = v[ix][iy]; + } + } +} + +bool +ImageFile::convertRealToComplex () +{ + if (dataType() != Array2dFile::DATA_TYPE_REAL) + return false; + + if (! reallocRealToComplex()) + return false; + + ImageFileArray vImag = getImaginaryArray(); + for (unsigned int ix = 0; ix < m_nx; ix++) { + ImageFileColumn vCol = vImag[ix]; + for (unsigned int iy = 0; iy < m_ny; iy++) + *vCol++ = 0; + } + + return true; +} + +bool +ImageFile::convertComplexToReal () +{ + if (dataType() != Array2dFile::DATA_TYPE_COMPLEX) + return false; + + ImageFileArray vReal = getArray(); + ImageFileArray vImag = getImaginaryArray(); + for (unsigned int ix = 0; ix < m_nx; ix++) { + ImageFileColumn vRealCol = vReal[ix]; + ImageFileColumn vImagCol = vImag[ix]; + for (unsigned int iy = 0; iy < m_ny; iy++) { + CTSimComplex c (*vRealCol, *vImagCol); + *vRealCol++ = std::abs (c); + vImagCol++; + } + } + + return reallocComplexToReal(); +} + +bool +ImageFile::subtractImages (const ImageFile& rRHS, ImageFile& result) const +{ + if (m_nx != rRHS.nx() || m_ny != rRHS.ny() || m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::subtractImage]"); + return false; + } + + if (isComplex() || (rRHS.isComplex() && ! result.isComplex())) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArrayConst vRHS = rRHS.getArray(); + ImageFileArrayConst vRHSImag = rRHS.getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + vResult[ix][iy] = vLHS[ix][iy] - vRHS[ix][iy]; + if (result.isComplex()) { + vResultImag[ix][iy] = 0; + if (isComplex()) + vResultImag[ix][iy] += vLHSImag[ix][iy]; + if (rRHS.isComplex()) + vResultImag[ix][iy] -= vRHSImag[ix][iy]; + } + } + } + + return true; +} + +bool +ImageFile::addImages (const ImageFile& rRHS, ImageFile& result) const +{ + if (m_nx != rRHS.nx() || m_ny != rRHS.ny() || m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::subtractImage]"); + return false; + } + + if (isComplex() || (rRHS.isComplex() && ! result.isComplex())) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArrayConst vRHS = rRHS.getArray(); + ImageFileArrayConst vRHSImag = rRHS.getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + vResult[ix][iy] = vLHS[ix][iy] + vRHS[ix][iy]; + if (result.isComplex()) { + vResultImag[ix][iy] = 0; + if (isComplex()) + vResultImag[ix][iy] += vLHSImag[ix][iy]; + if (rRHS.isComplex()) + vResultImag[ix][iy] += vRHSImag[ix][iy]; + } + } + } + + return true; +} + +bool +ImageFile::multiplyImages (const ImageFile& rRHS, ImageFile& result) const +{ + if (m_nx != rRHS.nx() || m_ny != rRHS.ny() || m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::subtractImage]"); + return false; + } + + if (isComplex() || (rRHS.isComplex() && ! result.isComplex())) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArrayConst vRHS = rRHS.getArray(); + ImageFileArrayConst vRHSImag = rRHS.getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + dImag = 0; + if (rRHS.isComplex()) + dImag = vRHSImag[ix][iy]; + std::complex cRHS (vRHS[ix][iy], dImag); + std::complex cResult = cLHS * cRHS; + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else + vResult[ix][iy] = vLHS[ix][iy] * vRHS[ix][iy]; + } + } + + + return true; +} + +bool +ImageFile::divideImages (const ImageFile& rRHS, ImageFile& result) const +{ + if (m_nx != rRHS.nx() || m_ny != rRHS.ny() || m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::subtractImage]"); + return false; + } + + if (isComplex() || (rRHS.isComplex() && ! result.isComplex())) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArrayConst vRHS = rRHS.getArray(); + ImageFileArrayConst vRHSImag = rRHS.getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + dImag = 0; + if (rRHS.isComplex()) + dImag = vRHSImag[ix][iy]; + std::complex cRHS (vRHS[ix][iy], dImag); + std::complex cResult = cLHS / cRHS; + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else { + if (vRHS != 0) + vResult[ix][iy] = vLHS[ix][iy] / vRHS[ix][iy]; + else + vResult[ix][iy] = 0; + } + } + } + + return true; +} + + +bool +ImageFile::invertPixelValues (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArray vResult = result.getArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + ImageFileColumnConst in = vLHS[ix]; + ImageFileColumn out = vResult[ix]; + for (unsigned int iy = 0; iy < m_ny; iy++) + *out++ = - *in++; + } + + return true; +} + +bool +ImageFile::sqrt (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + bool bComplexOutput = result.isComplex(); + ImageFileArrayConst vLHS = getArray(); + if (! bComplexOutput) // check if should convert to complex output + for (unsigned int ix = 0; ix < m_nx; ix++) + for (unsigned int iy = 0; iy < m_ny; iy++) + if (! bComplexOutput && vLHS[ix][iy] < 0) { + result.convertRealToComplex(); + bComplexOutput = true; + break; + } + + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + std::complex cResult = std::sqrt(cLHS); + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else + vResult[ix][iy] = ::sqrt (vLHS[ix][iy]); + } + } + + + return true; +} + +bool +ImageFile::log (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::log]"); + return false; + } + + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + std::complex cResult = std::log (cLHS); + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else { + if (vLHS[ix][iy] > 0) + vResult[ix][iy] = ::log (vLHS[ix][iy]); + else + vResult[ix][iy] = 0; + } + } + } + + + return true; +} + +bool +ImageFile::exp (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + std::complex cResult = std::exp (cLHS); + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else + vResult[ix][iy] = ::exp (vLHS[ix][iy]); + } + } + + + return true; +} + +bool +ImageFile::scaleImage (ImageFile& result) const +{ + unsigned int nx = m_nx; + unsigned int ny = m_ny; + unsigned int newNX = result.nx(); + unsigned int newNY = result.ny(); + + double dXScale = static_cast(newNX) / static_cast(nx); + double dYScale = static_cast(newNY) / static_cast(ny); + + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + BilinearInterpolator realInterp (vReal, nx, ny); + BilinearInterpolator imagInterp (vImag, nx, ny); + + for (unsigned int ix = 0; ix < newNX; ix++) { + for (unsigned int iy = 0; iy < newNY; iy++) { + double dXPos = ix / dXScale; + double dYPos = iy / dYScale; + vResult[ix][iy] = realInterp.interpolate (dXPos, dYPos); + if (result.isComplex()) { + if (isComplex()) { + vResultImag[ix][iy] = imagInterp.interpolate (dXPos, dYPos); + } else { + vResultImag[ix][iy] = 0; + } + } + } + } + + return true; +} + +#ifdef HAVE_FFTW +bool +ImageFile::fft (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + fftw_complex* in = static_cast (fftw_malloc (sizeof(fftw_complex) * m_nx * m_ny)); + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + + unsigned int ix, iy; + unsigned int iArray = 0; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + in[iArray][0] = vReal[ix][iy]; + if (isComplex()) + in[iArray][1] = vImag[ix][iy]; + else + in[iArray][1] = 0; + iArray++; + } + } + + fftw_plan plan = fftw_plan_dft_2d (m_nx, m_ny, in, in, FFTW_FORWARD, FFTW_ESTIMATE); + fftw_execute (plan); + + ImageFileArray vRealResult = result.getArray(); + ImageFileArray vImagResult = result.getImaginaryArray(); + iArray = 0; + unsigned int iScale = m_nx * m_ny; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = in[iArray][0] / iScale; + vImagResult[ix][iy] = in[iArray][1] / iScale; + iArray++; + } + } + fftw_free(in); + fftw_destroy_plan (plan); + + Fourier::shuffleFourierToNaturalOrder (result); + + return true; +} + + +bool +ImageFile::ifft (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + ImageFileArray vRealResult = result.getArray(); + ImageFileArray vImagResult = result.getImaginaryArray(); + unsigned int ix, iy; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = vReal[ix][iy]; + if (isComplex()) + vImagResult[ix][iy] = vImag[ix][iy]; + else + vImagResult[ix][iy] = 0; + } + } + + Fourier::shuffleNaturalToFourierOrder (result); + + fftw_complex* in = static_cast(fftw_malloc(sizeof(fftw_complex) * m_nx * m_ny)); + + unsigned int iArray = 0; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + in[iArray][0] = vRealResult[ix][iy]; + in[iArray][1] = vImagResult[ix][iy]; + iArray++; + } + } + + fftw_plan plan = fftw_plan_dft_2d (m_nx, m_ny, in, in, FFTW_BACKWARD, FFTW_ESTIMATE); + + fftw_execute (plan); + + iArray = 0; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = in[iArray][0]; + vImagResult[ix][iy] = in[iArray][1]; + iArray++; + } + } + fftw_destroy_plan (plan); + fftw_free(in); + + return true; +} + +bool +ImageFile::fftRows (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::fftRows]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + + fftw_complex* in = static_cast(fftw_malloc(sizeof(fftw_complex) * m_nx)); + fftw_plan plan = fftw_plan_dft_1d (m_nx, in, in, FFTW_FORWARD, FFTW_ESTIMATE); + + std::complex* pcRow = new std::complex [m_nx]; + for (unsigned int iy = 0; iy < m_ny; iy++) { + unsigned int ix; + for (ix = 0; ix < m_nx; ix++) { + in[ix][0] = vReal[ix][iy]; + if (isComplex()) + in[ix][1] = vImag[ix][iy]; + else + in[ix][1] = 0; + } + + fftw_execute (plan); + + for (ix = 0; ix < m_nx; ix++) + pcRow[ix] = std::complex(in[ix][0], in[ix][1]); + + Fourier::shuffleFourierToNaturalOrder (pcRow, m_nx); + for (ix = 0; ix < m_nx; ix++) { + vReal[ix][iy] = pcRow[ix].real() / m_nx; + vImag[ix][iy] = pcRow[ix].imag() / m_nx; + } + } + delete [] pcRow; + + fftw_destroy_plan (plan); + fftw_free(in); + + return true; +} + +bool +ImageFile::ifftRows (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::fftRows]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + + fftw_complex* in = static_cast(fftw_malloc(sizeof(fftw_complex) * m_nx)); + fftw_plan plan = fftw_plan_dft_1d (m_nx, in, in, FFTW_BACKWARD, FFTW_ESTIMATE); + std::complex* pcRow = new std::complex [m_nx]; + + unsigned int ix, iy; + // unsigned int iArray = 0; + for (iy = 0; iy < m_ny; iy++) { + for (ix = 0; ix < m_nx; ix++) { + double dImag = 0; + if (isComplex()) + dImag = vImag[ix][iy]; + pcRow[ix] = std::complex (vReal[ix][iy], dImag); + } + + Fourier::shuffleNaturalToFourierOrder (pcRow, m_nx); + + for (ix = 0; ix < m_nx; ix++) { + in[ix][0] = pcRow[ix].real(); + in[ix][1] = pcRow[ix].imag(); + } + + fftw_execute (plan); + + for (ix = 0; ix < m_nx; ix++) { + vReal[ix][iy] = in[ix][0]; + vImag[ix][iy] = in[ix][1]; + } + } + delete [] pcRow; + + fftw_destroy_plan (plan); + fftw_free(in); + + return true; +} + +bool +ImageFile::fftCols (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::fftRows]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + + fftw_complex* in = static_cast(fftw_malloc(sizeof(fftw_complex) * m_ny)); + fftw_plan plan = fftw_plan_dft_1d (m_ny, in, in, FFTW_FORWARD, FFTW_ESTIMATE); + + std::complex* pcCol = new std::complex [m_ny]; + for (unsigned int ix = 0; ix < m_nx; ix++) { + unsigned int iy; + for (iy = 0; iy < m_ny; iy++) { + in[iy][0] = vReal[ix][iy]; + if (isComplex()) + in[iy][1] = vImag[ix][iy]; + else + in[iy][1] = 0; + } + + fftw_execute (plan); + + for (iy = 0; iy < m_ny; iy++) + pcCol[iy] = std::complex(in[iy][0], in[iy][1]); + + Fourier::shuffleFourierToNaturalOrder (pcCol, m_ny); + for (iy = 0; iy < m_ny; iy++) { + vReal[ix][iy] = pcCol[iy].real() / m_ny; + vImag[ix][iy] = pcCol[iy].imag() / m_ny; + } + } + delete [] pcCol; + + fftw_destroy_plan (plan); + fftw_free(in); + + return true; +} + +bool +ImageFile::ifftCols (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::fftRows]"); + return false; + } + + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } + + ImageFileArrayConst vReal = getArray(); + ImageFileArrayConst vImag = getImaginaryArray(); + + fftw_complex* in = static_cast(fftw_malloc(sizeof(fftw_complex) * m_ny)); + fftw_plan plan = fftw_plan_dft_1d (m_ny, in, in, FFTW_BACKWARD, FFTW_ESTIMATE); + std::complex* pcCol = new std::complex [m_ny]; + + unsigned int ix, iy; + // unsigned int iArray = 0; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + double dImag = 0; + if (isComplex()) + dImag = vImag[ix][iy]; + pcCol[iy] = std::complex (vReal[ix][iy], dImag); + } + Fourier::shuffleNaturalToFourierOrder (pcCol, m_ny); + for (iy = 0; iy < m_ny; iy++) { + in[iy][0] = pcCol[iy].real(); + in[iy][1] = pcCol[iy].imag(); + } -void -ImageFile::filterResponse (const char* const domainName, double bw, const char* const filterName, double filt_param) -{ - int hx = (m_nx - 1) / 2; - int hy = (m_ny - 1) / 2; - ImageFileArray v = getArray(); - SignalFilter filter (filterName, domainName, bw, filt_param); + fftw_execute (plan); - for (int i = -hx; i <= hx; i++) { - for (int j = -hy; j <= hy; j++) { - double r = sqrt (i * i + j * j); - - v[i+hx][j+hy] = filter.response (r); + for (iy = 0; iy < m_ny; iy++) { + vReal[ix][iy] = in[iy][0]; + vImag[ix][iy] = in[iy][1]; } } + delete [] pcCol; + + fftw_destroy_plan (plan); + fftw_free(in); + + return true; } -int -ImageFile::display (void) const +#endif // HAVE_FFTW + + + +bool +ImageFile::fourier (ImageFile& result) const { - double pmin, pmax; + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } - getMinMax (pmin, pmax); + if (! result.isComplex()) + if (! result.convertRealToComplex ()) + return false; + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vRealResult = result.getArray(); + ImageFileArray vImagResult = result.getImaginaryArray(); + + unsigned int ix, iy; + + // alloc output matrix + CTSimComplex** complexOut = new CTSimComplex* [m_nx]; + for (ix = 0; ix < m_nx; ix++) + complexOut[ix] = new CTSimComplex [m_ny]; + + // fourier each x column + CTSimComplex* pY = new CTSimComplex [m_ny]; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + pY[iy] = std::complex(vLHS[ix][iy], dImag); + } + ProcessSignal::finiteFourierTransform (pY, complexOut[ix], m_ny, ProcessSignal::FORWARD); + } + delete [] pY; + + // fourier each y row + CTSimComplex* pX = new CTSimComplex [m_nx]; + CTSimComplex* complexOutRow = new CTSimComplex [m_nx]; + for (iy = 0; iy < m_ny; iy++) { + for (ix = 0; ix < m_nx; ix++) + pX[ix] = complexOut[ix][iy]; + ProcessSignal::finiteFourierTransform (pX, complexOutRow, m_nx, ProcessSignal::FORWARD); + for (ix = 0; ix < m_nx; ix++) + complexOut[ix][iy] = complexOutRow[ix]; + } + delete [] pX; + delete [] complexOutRow; + + for (ix = 0; ix < m_nx; ix++) + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = complexOut[ix][iy].real(); + vImagResult[ix][iy] = complexOut[ix][iy].imag(); + } + + Fourier::shuffleFourierToNaturalOrder (result); - return (displayScaling (1, pmin, pmax)); + // delete complexOut matrix + for (ix = 0; ix < m_nx; ix++) + delete [] complexOut[ix]; + delete [] complexOut; + + return true; } -int -ImageFile::displayScaling (const int scale, const ImageFileValue pmin, const ImageFileValue pmax) const +bool +ImageFile::inverseFourier (ImageFile& result) const { - int grayscale[256]; - int nx = m_nx; - int ny = m_ny; - ImageFileArrayConst v = getArray(); - if (v == NULL || nx == 0 || ny == 0) - return 0; - -#if HAVE_G2_H - int pens [nx * ny * scale * scale ]; + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } - double view_scale = 255 / (pmax - pmin); - int id_X11 = g2_open_X11 (nx * scale, ny * scale); + if (result.dataType() == Array2dFile::DATA_TYPE_REAL) { + if (! result.convertRealToComplex ()) + return false; + } - for (int i = 0; i < 256; i++) { - double cval = i / 255.; - grayscale[i] = g2_ink (id_X11, cval, cval, cval); + ImageFileArrayConst vLHSReal = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vRealResult = result.getArray(); + ImageFileArray vImagResult = result.getImaginaryArray(); + + unsigned int ix, iy; + // alloc 2d complex output matrix + CTSimComplex** complexOut = new CTSimComplex* [m_nx]; + for (ix = 0; ix < m_nx; ix++) + complexOut[ix] = new CTSimComplex [m_ny]; + + // put input image into result + for (ix = 0; ix < m_nx; ix++) + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = vLHSReal[ix][iy]; + if (isComplex()) + vImagResult[ix][iy] = vLHSImag[ix][iy]; + else + vImagResult[ix][iy] = 0; } - for (int i= 0, iy = ny - 1; iy >= 0; iy--) { - for (int ix = 0; ix < nx; ix++) { - int cval = static_cast((v[ix][iy] - pmin) * view_scale); - if (cval < 0) - cval = 0; - else if (cval > 255) - cval = 255; - pens[i++] = grayscale[cval]; - } + Fourier::shuffleNaturalToFourierOrder (result); + + // ifourier each x column + CTSimComplex* pCol = new CTSimComplex [m_ny]; + for (ix = 0; ix < m_nx; ix++) { + for (iy = 0; iy < m_ny; iy++) { + pCol[iy] = std::complex (vRealResult[ix][iy], vImagResult[ix][iy]); + } + ProcessSignal::finiteFourierTransform (pCol, complexOut[ix], m_ny, ProcessSignal::BACKWARD); } + delete [] pCol; + + // ifourier each y row + CTSimComplex* complexInRow = new CTSimComplex [m_nx]; + CTSimComplex* complexOutRow = new CTSimComplex [m_nx]; + for (iy = 0; iy < m_ny; iy++) { + for (ix = 0; ix < m_nx; ix++) + complexInRow[ix] = complexOut[ix][iy]; + ProcessSignal::finiteFourierTransform (complexInRow, complexOutRow, m_nx, ProcessSignal::BACKWARD); + for (ix = 0; ix < m_nx; ix++) + complexOut[ix][iy] = complexOutRow[ix]; + } + delete [] complexInRow; + delete [] complexOutRow; - g2_image (id_X11, 0., 0., nx, ny, pens); + for (ix = 0; ix < m_nx; ix++) + for (iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = complexOut[ix][iy].real(); + vImagResult[ix][iy] = complexOut[ix][iy].imag(); + } - return (id_X11); + // delete complexOut matrix + for (ix = 0; ix < m_nx; ix++) + delete [] complexOut[ix]; + delete [] complexOut; -#endif + return true; } +bool +ImageFile::magnitude (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } -// ImageFile::comparativeStatistics Calculate comparative stats -// -// OUTPUT -// d Normalized root mean squared distance measure -// r Normalized mean absolute distance measure -// e Worst case distance measure -// -// REFERENCES -// G.T. Herman, Image Reconstruction From Projections, 1980 + ImageFileArray vReal = getArray(); + ImageFileArray vImag = getImaginaryArray(); + ImageFileArray vRealResult = result.getArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (isComplex()) + vRealResult[ix][iy] = ::sqrt (vReal[ix][iy] * vReal[ix][iy] + vImag[ix][iy] * vImag[ix][iy]); + else + vRealResult[ix][iy] = ::fabs(vReal[ix][iy]); + } + + if (result.isComplex()) + result.reallocComplexToReal(); + + return true; +} bool -ImageFile::comparativeStatistics (const ImageFile& imComp, double& d, double& r, double& e) const +ImageFile::phase (ImageFile& result) const { - if (imComp.nx() != m_nx && imComp.ny() != m_ny) { - sys_error (ERR_WARNING, "Image sizes differ [ImageFile::comparativeStatistics]"); - return false; + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + ImageFileArray vReal = getArray(); + ImageFileArray vImag = getImaginaryArray(); + ImageFileArray vRealResult = result.getArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (isComplex()) + vRealResult[ix][iy] = ::atan2 (vImag[ix][iy], vReal[ix][iy]); + else + vRealResult[ix][iy] = 0; } - ImageFileArrayConst v = getArray(); - if (v == NULL || m_nx == 0 || m_ny == 0) - return false; + } + if (result.isComplex()) + result.reallocComplexToReal(); - ImageFileArrayConst vComp = imComp.getArray(); - - double myMean = 0.; - for (unsigned int ix = 0; ix < m_nx; ix++) { - for (unsigned int iy = 0; iy < m_ny; iy++) { - myMean += v[ix][iy]; - } - } - myMean /= (m_nx * m_ny); - - double sqErrorSum = 0.; - double absErrorSum = 0.; - double sqDiffFromMeanSum = 0.; - double absValueSum = 0.; - for (unsigned int ix = 0; ix < m_nx; ix++) { - for (unsigned int iy = 0; iy < m_ny; iy++) { - double diff = v[ix][iy] - vComp[ix][iy]; - sqErrorSum += diff * diff; - absErrorSum += fabs(diff); - double diffFromMean = v[ix][iy] - myMean; - sqDiffFromMeanSum += diffFromMean * diffFromMean; - absValueSum += fabs(v[ix][iy]); - } - } - - d = sqrt (sqErrorSum / sqDiffFromMeanSum); - r = absErrorSum / absValueSum; - - int hx = m_nx / 2; - int hy = m_ny / 2; - double eMax = -1; - for (int ix = 0; ix < hx; ix++) { - for (int iy = 0; iy < hy; iy++) { - double avgPixel = 0.25 * (v[2*ix][2*iy] + v[2*ix+1][2*iy] + v[2*ix][2*iy+1] + v[2*ix+1][2*iy+1]); - double avgPixelComp = 0.25 * (vComp[2*ix][2*iy] + vComp[2*ix+1][2*iy] + vComp[2*ix][2*iy+1] + vComp[2*ix+1][2*iy+1]); - double error = fabs (avgPixel - avgPixelComp); - if (error > eMax) - eMax = error; - } + return true; +} + +bool +ImageFile::real (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + ImageFileArray vReal = getArray(); + ImageFileArray vRealResult = result.getArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + vRealResult[ix][iy] = vReal[ix][iy]; } + } - e = eMax; + if (result.isComplex()) + result.reallocComplexToReal(); - return true; + return true; } +bool +ImageFile::imaginary (ImageFile& result) const +{ + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } + + ImageFileArray vImag = getArray(); + ImageFileArray vRealResult = result.getArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (isComplex()) + vRealResult[ix][iy] = vImag[ix][iy]; + else + vRealResult[ix][iy] = 0; + } + } + + if (result.isComplex()) + result.reallocComplexToReal(); + + return true; +} bool -ImageFile::printComparativeStatistics (const ImageFile& imComp, ostream& os) const +ImageFile::square (ImageFile& result) const { - double d, r, e; + if (m_nx != result.nx() || m_ny != result.ny()) { + sys_error (ERR_WARNING, "Difference sizes of images [ImageFile::invertPixelValues]"); + return false; + } - if (comparativeStatistics (imComp, d, r, e)) { - os << " Normalized root mean squared distance (d): " << d << endl; - os << " Normalized mean absolute distance (r): " << r << endl; - os << "Worst case distance (2x2 pixel average) (e): " << e << endl; - return true; + if (isComplex() && ! result.isComplex()) + result.convertRealToComplex(); + + ImageFileArrayConst vLHS = getArray(); + ImageFileArrayConst vLHSImag = getImaginaryArray(); + ImageFileArray vResult = result.getArray(); + ImageFileArray vResultImag = result.getImaginaryArray(); + + for (unsigned int ix = 0; ix < m_nx; ix++) { + for (unsigned int iy = 0; iy < m_ny; iy++) { + if (result.isComplex()) { + double dImag = 0; + if (isComplex()) + dImag = vLHSImag[ix][iy]; + std::complex cLHS (vLHS[ix][iy], dImag); + std::complex cResult = cLHS * cLHS; + vResult[ix][iy] = cResult.real(); + vResultImag[ix][iy] = cResult.imag(); + } else + vResult[ix][iy] = vLHS[ix][iy] * vLHS[ix][iy]; + } } - return false; + + return true; +} + +int +ImageFile::convertExportFormatNameToID (const char* const formatName) +{ + int formatID = EXPORT_FORMAT_INVALID; + + for (int i = 0; i < s_iExportFormatCount; i++) + if (strcasecmp (formatName, s_aszExportFormatName[i]) == 0) { + formatID = i; + break; + } + + return (formatID); } +const char* +ImageFile::convertExportFormatIDToName (int formatID) +{ + static const char *formatName = ""; + + if (formatID >= 0 && formatID < s_iExportFormatCount) + return (s_aszExportFormatName[formatID]); -void -ImageFile::printStatistics (ostream& os) const + return (formatName); +} + +const char* +ImageFile::convertExportFormatIDToTitle (const int formatID) +{ + static const char *formatTitle = ""; + + if (formatID >= 0 && formatID < s_iExportFormatCount) + return (s_aszExportFormatTitle[formatID]); + + return (formatTitle); +} + +int +ImageFile::convertImportFormatNameToID (const char* const formatName) +{ + int formatID = IMPORT_FORMAT_INVALID; + + for (int i = 0; i < s_iImportFormatCount; i++) + if (strcasecmp (formatName, s_aszImportFormatName[i]) == 0) { + formatID = i; + break; + } + + return (formatID); +} + +const char* +ImageFile::convertImportFormatIDToName (int formatID) +{ + static const char *formatName = ""; + + if (formatID >= 0 && formatID < s_iImportFormatCount) + return (s_aszImportFormatName[formatID]); + + return (formatName); +} + +const char* +ImageFile::convertImportFormatIDToTitle (const int formatID) { - double min, max, mean, mode, median, stddev; + static const char *formatTitle = ""; - statistics (min, max, mean, mode, median, stddev); + if (formatID >= 0 && formatID < s_iImportFormatCount) + return (s_aszImportFormatTitle[formatID]); - os << " min: " << min << endl; - os << " max: " << max << endl; - os << " mean: " << mean << endl; - os << " mode: " << mode << endl; - os << "median: " << median << endl; - os << "stddev: " << stddev << endl; + return (formatTitle); } +bool +ImageFile::importImage (const char* const pszFormat, const char* const pszFilename) +{ + int iFormatID = convertImportFormatNameToID (pszFormat); + + if (iFormatID == IMPORT_FORMAT_PPM) + return readImagePPM (pszFilename); +#ifdef HAVE_PNG + else if (iFormatID == IMPORT_FORMAT_PNG) + return readImagePNG (pszFilename); +#endif + + sys_error (ERR_SEVERE, "Invalid format %s [ImageFile::importImage]", pszFormat); + return false; +} void -ImageFile::statistics (double& min, double& max, double& mean, double& mode, double& median, double& stddev) const +ImageFile::skipSpacePPM (FILE* fp) { - int nx = m_nx; - int ny = m_ny; - ImageFileArrayConst v = getArray(); - - if (v == NULL || nx == 0 || ny == 0) - return; - - mean = 0; - min = v[0][0]; - max = v[0][0]; - for (int ix = 0; ix < nx; ix++) { - for (int iy = 0; iy < ny; iy++) { - if (v[ix][iy] > max) - max = v[ix][iy]; - if (v[ix][iy] < min) - min = v[ix][iy]; - mean += v[ix][iy]; - } + int c = fgetc (fp); + while (isspace (c) || c == '#') { + if (c == '#') { // comment until end of line + c = fgetc(fp); + while (c != 13 && c != 10) + c = fgetc(fp); + } + else + c = fgetc(fp); + } + + ungetc (c, fp); +} + +bool +ImageFile::readImagePPM (const char* const pszFile) +{ + FILE* fp = fopen (pszFile, "r"); + if ((fp = fopen (pszFile, "r")) == NULL) + return false; + char cSignature = toupper(fgetc(fp)); + if (cSignature != 'P') { + fclose(fp); + return false; + } + cSignature = fgetc(fp); + if (cSignature == '5' || cSignature == '6') { // binary modes + fclose(fp); + fp = fopen(pszFile, "rb"); // reopen in binary mode + fgetc(fp); + fgetc(fp); + } else if (cSignature != '2' && cSignature != '3') { + fclose(fp); + return false; + } + + int nRows, nCols, iMaxValue; + skipSpacePPM (fp); + if (fscanf (fp, "%d", &nCols) != 1) { + fclose(fp); + return false; + } + skipSpacePPM (fp); + if (fscanf (fp, "%d", &nRows) != 1) { + fclose(fp); + return false; + } + skipSpacePPM (fp); + if (fscanf (fp, "%d", &iMaxValue) != 1) { + fclose(fp); + return false; + } + setArraySize (nRows, nCols); + + if (cSignature == '5' || cSignature == '6') { // binary modes + int c = fgetc(fp); + if (c == 13) { + c = fgetc(fp); + if (c != 10) // read msdos 13-10 newline + ungetc(c, fp); } - mean /= (nx * ny); - - static const int nbin = 256; - int hist[ nbin ] = {0}; - double spread = max - min; - mode = 0; - stddev = 0; - for (int ix = 0; ix < nx; ix++) { - for (int iy = 0; iy < ny; iy++) { - int b = static_cast((((v[ix][iy] - min) / spread) * (nbin - 1)) + 0.5); - hist[b]++; - double diff = (v[ix][iy] - mean); - stddev += diff * diff; - } - } - stddev = sqrt(stddev / (nx * ny)); - - int max_binindex = 0; - int max_bin = -1; - for (int ibin = 0; ibin < nbin; ibin++) { - if (hist[ibin] > max_bin) { - max_bin = hist[ibin]; - max_binindex = ibin; + } else + skipSpacePPM (fp); // ascii may have comments + + bool bMonochromeImage = false; + double dMaxValue = iMaxValue; + double dMaxValue3 = iMaxValue * 3; + + ImageFileArray v = getArray(); + for (int iy = nRows - 1; iy >= 0; iy--) { + for (int ix = 0; ix < nCols; ix++) { + int iGS, iR, iG, iB; + double dR, dG, dB; + switch (cSignature) { + case '2': + if (fscanf(fp, "%d ", &iGS) != 1) { + fclose(fp); + return false; + } + v[ix][iy] = iGS / dMaxValue; + break; + case '5': + iGS = fgetc(fp); + if (iGS == EOF) { + fclose(fp); + return false; + } + v[ix][iy] = iGS / dMaxValue; + break; + case '3': + if (fscanf (fp, "%d %d %d ", &iR, &iG, &iB) != 3) { + fclose(fp); + return false; + } + if (ix == 0 && iy == 0 && (iR == iG && iG == iB)) + bMonochromeImage = true; + if (bMonochromeImage) + v[ix][iy] = (iR + iG + iB) / dMaxValue3; + else { + dR = iR / dMaxValue; + dG = iG / dMaxValue; + dB = iB / dMaxValue; + v[ix][iy] = colorToGrayscale (dR, dG, dB); + } + break; + case '6': + iR = fgetc(fp); + iG = fgetc(fp); + iB = fgetc(fp); + + if (iB == EOF) { + fclose(fp); + return false; + } + if (ix == 0 && iy == 0 && (iR == iG && iG == iB)) + bMonochromeImage = true; + + if (bMonochromeImage) + v[ix][iy] = (iR + iG + iB) / dMaxValue3; + else { + dR = iR / dMaxValue; + dG = iG / dMaxValue; + dB = iB / dMaxValue; + v[ix][iy] = colorToGrayscale (dR, dG, dB); + } + break; } } + } - mode = (max_binindex * spread / (nbin - 1)) + min; - - median = 0.; + fclose(fp); + return true; } - -void -ImageFile::getMinMax (double& min, double& max) const +#ifdef HAVE_PNG +bool +ImageFile::readImagePNG (const char* const pszFile) { - int nx = m_nx; - int ny = m_ny; - ImageFileArrayConst v = getArray(); - - if (v == NULL || nx == 0 || ny == 0) - return; - - min = v[0][0]; - max = v[0][0]; - for (int ix = 0; ix < nx; ix++) { - for (int iy = 0; iy < ny; iy++) { - if (v[ix][iy] > max) - max = v[ix][iy]; - if (v[ix][iy] < min) - min = v[ix][iy]; + FILE* fp = fopen(pszFile, "rb"); + if (!fp) + return false; + unsigned char header[8]; + fread (header, 1, 8, fp); + if (png_sig_cmp (header, 0, 8)) { + fclose (fp); + return false; + } + + png_structp png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png_ptr) { + fclose(fp); + return false; + } + + png_infop info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL); + fclose(fp); + return false; + } + + png_infop end_info = png_create_info_struct(png_ptr); + if (!end_info) { + png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL); + fclose(fp); + return false; + } + + if (setjmp(png_ptr->jmpbuf)) { + png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); + fclose(fp); + return false; + } + + png_init_io(png_ptr, fp); + png_set_sig_bytes(png_ptr, 8); + png_read_info(png_ptr, info_ptr); + + int width = png_get_image_width (png_ptr, info_ptr); + int height = png_get_image_height (png_ptr, info_ptr); + int bit_depth = png_get_bit_depth (png_ptr, info_ptr); + int color_type = png_get_color_type (png_ptr, info_ptr); + + if (color_type == PNG_COLOR_TYPE_PALETTE && bit_depth <= 8) + png_set_expand(png_ptr); + + if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) + png_set_expand(png_ptr); + + if (bit_depth < 8) + png_set_packing(png_ptr); + + if (color_type & PNG_COLOR_MASK_ALPHA) + png_set_strip_alpha(png_ptr); + + if (bit_depth == 16) + png_set_swap(png_ptr); // convert to little-endian format + + png_read_update_info(png_ptr, info_ptr); // update with transformations + int rowbytes = png_get_rowbytes (png_ptr, info_ptr); + bit_depth = png_get_bit_depth (png_ptr, info_ptr); + color_type = png_get_color_type (png_ptr, info_ptr); + + png_bytep* row_pointers = new png_bytep [height]; + int i; + for (i = 0; i < height; i++) + row_pointers[i] = new unsigned char [rowbytes]; + + png_read_image(png_ptr, row_pointers); + + setArraySize (width, height); + ImageFileArray v = getArray(); + for (int iy = 0; iy < height; iy++) { + for (int ix = 0; ix < width; ix++) { + double dV = 0; + if (color_type == PNG_COLOR_TYPE_GRAY) { + if (bit_depth == 8) + dV = row_pointers[iy][ix] / 255.; + else if (bit_depth == 16) { + int iBase = ix * 2; + dV = (row_pointers[iy][iBase] + (row_pointers[iy][iBase+1] << 8)) / 65536.; + } else + dV = 0; + } else if (color_type == PNG_COLOR_TYPE_RGB) { + if (bit_depth == 8) { + int iBase = ix * 3; + double dR = row_pointers[iy][iBase] / 255.; + double dG = row_pointers[iy][iBase+1] / 255.; + double dB = row_pointers[iy][iBase+2] / 255.; + dV = colorToGrayscale (dR, dG, dB); + } else + dV = 0; } + v[ix][height-iy-1] = dV; } + } + + png_read_end(png_ptr, end_info); + png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); + + for (i = 0; i < height; i++) + delete row_pointers[i]; + delete row_pointers; + + fclose (fp); + return true; +} +#endif + +bool +ImageFile::exportImage (const char* const pszFormat, const char* const pszFilename, int nxcell, int nycell, double densmin, double densmax) +{ + int iFormatID = convertExportFormatNameToID (pszFormat); + + if (iFormatID == EXPORT_FORMAT_PGM) + return writeImagePGM (pszFilename, nxcell, nycell, densmin, densmax); + else if (iFormatID == EXPORT_FORMAT_PGMASCII) + return writeImagePGMASCII (pszFilename, nxcell, nycell, densmin, densmax); + else if (iFormatID == EXPORT_FORMAT_TEXT) + return writeImageText (pszFilename); +#ifdef HAVE_PNG + else if (iFormatID == EXPORT_FORMAT_PNG) + return writeImagePNG (pszFilename, 8, nxcell, nycell, densmin, densmax); + else if (iFormatID == EXPORT_FORMAT_PNG16) + return writeImagePNG (pszFilename, 16, nxcell, nycell, densmin, densmax); +#endif +#ifdef HAVE_CTN_DICOM + else if (iFormatID == EXPORT_FORMAT_DICOM) { + DicomExporter dicomExport (this); + bool bSuccess = dicomExport.writeFile (pszFilename); + if (! bSuccess) + sys_error (ERR_SEVERE, dicomExport.failMessage().c_str()); + return bSuccess; + } +#endif + else if (iFormatID == EXPORT_FORMAT_RAW) + return writeImageRaw(pszFilename, nxcell, nycell); + + + sys_error (ERR_SEVERE, "Invalid format %s [ImageFile::exportImage]", pszFormat); + return false; } -void -ImageFile::writeImagePGM (const char *outfile, int nxcell, int nycell, double densmin, double densmax) + +bool +ImageFile::writeImagePGM (const char* const outfile, int nxcell, int nycell, double densmin, double densmax) { FILE *fp; int nx = m_nx; int ny = m_ny; ImageFileArray v = getArray(); - unsigned char rowp [nx * nxcell]; + unsigned char* rowp = new unsigned char [nx * nxcell]; if ((fp = fopen (outfile, "wb")) == NULL) - return; + return false; fprintf(fp, "P5\n"); fprintf(fp, "%d %d\n", nx, ny); @@ -295,32 +1704,33 @@ ImageFile::writeImagePGM (const char *outfile, int nxcell, int nycell, double de double dens = (v[icol][irow] - densmin) / (densmax - densmin); dens = clamp (dens, 0., 1.); for (int p = pos; p < pos + nxcell; p++) { - rowp[p] = static_cast (dens * 255.); + rowp[p] = static_cast (dens * 255.); } } for (int ir = 0; ir < nycell; ir++) { - for (int ic = 0; ic < nx * nxcell; ic++) - fprintf(fp, "%c ", rowp[ic]); + for (int ic = 0; ic < nx * nxcell; ic++) + fputc( rowp[ic], fp ); } } + delete rowp; fclose(fp); + + return true; } -void -ImageFile::writeImagePGMASCII (const char *outfile, int nxcell, int nycell, double densmin, double densmax) +bool +ImageFile::writeImagePGMASCII (const char* const outfile, int nxcell, int nycell, double densmin, double densmax) { FILE *fp; int nx = m_nx; int ny = m_ny; ImageFileArray v = getArray(); - unsigned char rowp [nx * nxcell]; - if (rowp == NULL) - return; + unsigned char* rowp = new unsigned char [nx * nxcell]; if ((fp = fopen (outfile, "wb")) == NULL) - return; + return false; fprintf(fp, "P2\n"); fprintf(fp, "%d %d\n", nx, ny); @@ -332,62 +1742,93 @@ ImageFile::writeImagePGMASCII (const char *outfile, int nxcell, int nycell, doub double dens = (v[icol][irow] - densmin) / (densmax - densmin); dens = clamp (dens, 0., 1.); for (int p = pos; p < pos + nxcell; p++) { - rowp[p] = static_cast (dens * 255.); + rowp[p] = static_cast (dens * 255.); } } for (int ir = 0; ir < nycell; ir++) { - for (int ic = 0; ic < nx * nxcell; ic++) - fprintf(fp, "%d ", rowp[ic]); + for (int ic = 0; ic < nx * nxcell; ic++) + fprintf(fp, "%d ", rowp[ic]); fprintf(fp, "\n"); } } + delete rowp; + fclose(fp); + + return true; +} + +bool +ImageFile::writeImageText (const char* const outfile) +{ + FILE *fp; + int nx = m_nx; + int ny = m_ny; + ImageFileArray v = getArray(); + ImageFileArray vImag = getImaginaryArray(); + + if ((fp = fopen (outfile, "w")) == NULL) + return false; + + for (int irow = ny - 1; irow >= 0; irow--) { + for (int icol = 0; icol < nx; icol++) { + if (isComplex()) { + if (vImag[icol][irow] >= 0) + fprintf (fp, "%.9g+%.9gi ", v[icol][irow], vImag[icol][irow]); + else + fprintf (fp, "%.9g-%.9gi ", v[icol][irow], -vImag[icol][irow]); + } else + fprintf (fp, "%12.8g ", v[icol][irow]); + } + fprintf(fp, "\n"); + } + fclose(fp); + + return true; } #ifdef HAVE_PNG -void -ImageFile::writeImagePNG (const char *outfile, int bitdepth, int nxcell, int nycell, double densmin, double densmax) +bool +ImageFile::writeImagePNG (const char* const outfile, int bitdepth, int nxcell, int nycell, double densmin, double densmax) { - FILE *fp; - png_structp png_ptr; - png_infop info_ptr; double max_out_level = (1 << bitdepth) - 1; int nx = m_nx; int ny = m_ny; ImageFileArray v = getArray(); - unsigned char rowp [nx * nxcell * (bitdepth / 8)]; + unsigned char* rowp = new unsigned char [nx * nxcell * (bitdepth / 8)]; - if ((fp = fopen (outfile, "wb")) == NULL) - return; + FILE *fp = fopen (outfile, "wb"); + if (! fp) + return false; - png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + png_structp png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); if (! png_ptr) - return; + return false; - info_ptr = png_create_info_struct(png_ptr); + png_infop info_ptr = png_create_info_struct (png_ptr); if (! info_ptr) { - png_destroy_write_struct(&png_ptr, (png_infopp) NULL); - fclose(fp); - return; + png_destroy_write_struct (&png_ptr, (png_infopp) NULL); + fclose (fp); + return false; } - if (setjmp(png_ptr->jmpbuf)) { - png_destroy_write_struct(&png_ptr, &info_ptr); - fclose(fp); - return; + if (setjmp (png_ptr->jmpbuf)) { + png_destroy_write_struct (&png_ptr, &info_ptr); + fclose (fp); + return false; } png_init_io(png_ptr, fp); - png_set_IHDR(png_ptr, info_ptr, nx * nxcell, ny * nycell, bitdepth, PNG_COLOR_TYPE_GRAY, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_DEFAULT); + png_set_IHDR (png_ptr, info_ptr, nx * nxcell, ny * nycell, bitdepth, PNG_COLOR_TYPE_GRAY, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); png_write_info(png_ptr, info_ptr); for (int irow = ny - 1; irow >= 0; irow--) { png_bytep row_pointer = rowp; - + for (int icol = 0; icol < nx; icol++) { int pos = icol * nxcell; double dens = (v[icol][irow] - densmin) / (densmax - densmin); @@ -395,23 +1836,26 @@ ImageFile::writeImagePNG (const char *outfile, int bitdepth, int nxcell, int nyc unsigned int outval = static_cast (dens * max_out_level); for (int p = pos; p < pos + nxcell; p++) { - if (bitdepth == 8) - rowp[p] = outval; - else { - int rowpos = p * 2; - rowp[rowpos] = (outval >> 8) & 0xFF; - rowp[rowpos+1] = (outval & 0xFF); - } + if (bitdepth == 8) + rowp[p] = outval; + else { + int rowpos = p * 2; + rowp[rowpos+1] = (outval >> 8) & 0xFF; + rowp[rowpos] = (outval & 0xFF); + } } } for (int ir = 0; ir < nycell; ir++) png_write_rows (png_ptr, &row_pointer, 1); } - png_write_end(png_ptr, info_ptr); - png_destroy_write_struct(&png_ptr, &info_ptr); + png_write_end (png_ptr, info_ptr); + png_destroy_write_struct (&png_ptr, &info_ptr); + delete rowp; fclose(fp); + + return true; } #endif @@ -419,21 +1863,17 @@ ImageFile::writeImagePNG (const char *outfile, int bitdepth, int nxcell, int nyc #include "gd.h" static const int N_GRAYSCALE=256; -void -ImageFile::writeImageGIF (const char *outfile, int nxcell, int nycell, double densmin, double densmax) +bool +ImageFile::writeImageGIF (const char* const outfile, int nxcell, int nycell, double densmin, double densmax) { - gdImagePtr gif; - FILE *out; int gs_indices[N_GRAYSCALE]; int nx = m_nx; int ny = m_ny; ImageFileArray v = getArray(); - unsigned char rowp [nx * nxcell]; - if (rowp == NULL) - return; + unsigned char* rowp = new unsigned char [nx * nxcell]; - gif = gdImageCreate(nx * nxcell, ny * nycell); + gdImagePtr gif = gdImageCreate(nx * nxcell, ny * nycell); for (int i = 0; i < N_GRAYSCALE; i++) gs_indices[i] = gdImageColorAllocate(gif, i, i, i); @@ -442,24 +1882,52 @@ ImageFile::writeImageGIF (const char *outfile, int nxcell, int nycell, double de int rpos = irow * nycell; for (int ir = rpos; ir < rpos + nycell; ir++) { for (int icol = 0; icol < nx; icol++) { - int cpos = icol * nxcell; - double dens = (v[icol][irow] - densmin) / (densmax - densmin); - dens = clamp(dens, 0., 1.); - for (int ic = cpos; ic < cpos + nxcell; ic++) { - rowp[ic] = (unsigned int) (dens * (double) (N_GRAYSCALE - 1)); - gdImageSetPixel(gif, ic, lastrow - ir, gs_indices[rowp[ic]]); - } + int cpos = icol * nxcell; + double dens = (v[icol][irow] - densmin) / (densmax - densmin); + dens = clamp(dens, 0., 1.); + for (int ic = cpos; ic < cpos + nxcell; ic++) { + rowp[ic] = (unsigned int) (dens * (double) (N_GRAYSCALE - 1)); + gdImageSetPixel(gif, ic, lastrow - ir, gs_indices[rowp[ic]]); + } } } } - if ((out = fopen(outfile,"w")) == NULL) { - sys_error(ERR_FATAL, "Error opening output file %s for writing", outfile); - return (1); + FILE *out; + if ((out = fopen (outfile,"w")) == NULL) { + sys_error(ERR_SEVERE, "Error opening output file %s for writing", outfile); + return false; } gdImageGif(gif,out); fclose(out); gdImageDestroy(gif); + + delete rowp; + + return true; } #endif +bool +ImageFile::writeImageRaw (const char* const outfile, int nxcell, int nycell) +{ + FILE *fp; + int nx = m_nx; + int ny = m_ny; + ImageFileArray v = getArray(); + + if ((fp = fopen (outfile, "wb")) == NULL) + return false; + + for (int irow = ny - 1; irow >= 0; irow--) { + for (int icol = 0; icol < nx; icol++) { + float dens = v[icol][irow]; + fwrite(&dens, sizeof(float), 1, fp); + } + } + + fclose(fp); + return true; +} + +