/*****************************************************************************
** 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
** 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<double>(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<double> 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<double> cLHS (vLHS[ix][iy], dImag);
+ dImag = 0;
+ if (rRHS.isComplex())
+ dImag = vRHSImag[ix][iy];
+ std::complex<double> cRHS (vRHS[ix][iy], dImag);
+ std::complex<double> 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<double> cLHS (vLHS[ix][iy], dImag);
+ dImag = 0;
+ if (rRHS.isComplex())
+ dImag = vRHSImag[ix][iy];
+ std::complex<double> cRHS (vRHS[ix][iy], dImag);
+ std::complex<double> 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<double> cLHS (vLHS[ix][iy], dImag);
+ std::complex<double> 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<double> cLHS (vLHS[ix][iy], dImag);
+ std::complex<double> 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<double> cLHS (vLHS[ix][iy], dImag);
+ std::complex<double> 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<double>(newNX) / static_cast<double>(nx);
+ double dYScale = static_cast<double>(newNY) / static_cast<double>(ny);
+
+ if (isComplex() && ! result.isComplex())
+ result.convertRealToComplex();
+
+ ImageFileArrayConst vReal = getArray();
+ ImageFileArrayConst vImag = getImaginaryArray();
+ ImageFileArray vResult = result.getArray();
+ ImageFileArray vResultImag = result.getImaginaryArray();
+
+ BilinearInterpolator<ImageFileValue> realInterp (vReal, nx, ny);
+ BilinearInterpolator<ImageFileValue> 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_complex*> (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_complex*>(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_complex*>(fftw_malloc(sizeof(fftw_complex) * m_nx));
+ fftw_plan plan = fftw_plan_dft_1d (m_nx, in, in, FFTW_FORWARD, FFTW_ESTIMATE);
+
+ std::complex<double>* pcRow = new std::complex<double> [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<double>(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_complex*>(fftw_malloc(sizeof(fftw_complex) * m_nx));
+ fftw_plan plan = fftw_plan_dft_1d (m_nx, in, in, FFTW_BACKWARD, FFTW_ESTIMATE);
+ std::complex<double>* pcRow = new std::complex<double> [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<double> (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_complex*>(fftw_malloc(sizeof(fftw_complex) * m_ny));
+ fftw_plan plan = fftw_plan_dft_1d (m_ny, in, in, FFTW_FORWARD, FFTW_ESTIMATE);
+
+ std::complex<double>* pcCol = new std::complex<double> [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<double>(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_complex*>(fftw_malloc(sizeof(fftw_complex) * m_ny));
+ fftw_plan plan = fftw_plan_dft_1d (m_ny, in, in, FFTW_BACKWARD, FFTW_ESTIMATE);
+ std::complex<double>* pcCol = new std::complex<double> [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<double> (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<double>(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<int>((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<double> (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<double> cLHS (vLHS[ix][iy], dImag);
+ std::complex<double> 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<int>((((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);
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<unsigned int> (dens * 255.);
+ rowp[p] = static_cast<unsigned int> (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);
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<unsigned int> (dens * 255.);
+ rowp[p] = static_cast<unsigned int> (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);
unsigned int outval = static_cast<unsigned int> (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
#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);
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;
+}
+
+
projects / ctsim.git / blobdiff