** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: imagefile.cpp,v 1.21 2000/12/17 19:08:06 kevin Exp $
+** $Id: imagefile.cpp,v 1.36 2001/01/12 16:41:56 kevin Exp $
**
** 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
#include "ct.h"
+const int ImageFile::FORMAT_INVALID = -1;
+const int ImageFile::FORMAT_PGM = 0;
+const int ImageFile::FORMAT_PGMASCII = 1;
+#ifdef HAVE_PNG
+const int ImageFile::FORMAT_PNG = 2;
+const int ImageFile::FORMAT_PNG16 = 3;
+#endif
+
+const char* ImageFile::s_aszFormatName[] =
+{
+ {"pgm"},
+ {"pgmascii"},
+#ifdef HAVE_PNG
+ {"png"},
+ {"png16"},
+#endif
+};
+
+const char* ImageFile::s_aszFormatTitle[] =
+{
+ {"PGM"},
+ {"PGM ASCII"},
+ {"PNG"},
+ {"PNG 16-bit"},
+};
+
+const int ImageFile::s_iFormatCount = sizeof(s_aszFormatName) / sizeof(const char*);
+
+
-F32Image::F32Image (int nx, int ny)\r
- : Array2dFile (nx, ny, sizeof(kfloat32), Array2dFile::PIXEL_FLOAT32)\r
- {\r
- }\r
-\r
-F32Image::F32Image (void)\r
- : Array2dFile()\r
- {\r
- setPixelFormat (Array2dFile::PIXEL_FLOAT32);\r
- setPixelSize (sizeof(kfloat32));\r
- }\r
-\r
-F64Image::F64Image (int nx, int ny)\r
- : Array2dFile (nx, ny, sizeof(kfloat64), Array2dFile::PIXEL_FLOAT64)\r
- {\r
- }\r
-\r
-F64Image::F64Image (void)\r
- : Array2dFile ()\r
- {\r
- setPixelFormat (PIXEL_FLOAT64);\r
- setPixelSize (sizeof(kfloat64));\r
- }\r
+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::filterResponse (const char* const domainName, double bw, const char* const filterName, double filt_param)
+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)
{
- int hx = (m_nx - 1) / 2;
- int hy = (m_ny - 1) / 2;
ImageFileArray v = getArray();
SignalFilter filter (filterName, domainName, bw, filt_param);
-
- 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);
+
+ 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;
}
- }
}
int
ImageFile::display (void) const
{
- double pmin, pmax;
-
- getMinMax (pmin, pmax);
-
- return (displayScaling (1, pmin, pmax));
+ double pmin, pmax;
+
+ getMinMax (pmin, pmax);
+
+ return (displayScaling (1, pmin, pmax));
}
int
ImageFile::displayScaling (const int scale, const ImageFileValue pmin, const ImageFileValue pmax) const
{
- int nx = m_nx;
- int ny = m_ny;
- ImageFileArrayConst v = getArray();
- if (v == NULL || nx == 0 || ny == 0)
- return 0;
-
+ 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* pPens = new int [nx * ny * scale * scale ];
-
- double view_scale = 255 / (pmax - pmin);
- int id_X11 = g2_open_X11 (nx * scale, ny * scale);
- int grayscale[256];
- for (int i = 0; i < 256; i++) {
- double cval = i / 255.;
- grayscale[i] = g2_ink (id_X11, cval, cval, cval);
- }
-
- for (int iy = ny - 1; iy >= 0; iy--) {
- int iRowPos = ((ny - 1 - iy) * scale) * (nx * scale);
- 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;
- for (int sy = 0; sy < scale; sy++)
- for (int sx = 0; sx < scale; sx++)
- pPens[iRowPos+(sy * nx * scale)+(sx + (ix * scale))] = grayscale[cval];
- }
- }
-
- g2_image (id_X11, 0., 0., nx * scale, ny * scale, pPens);
-
- delete pPens;
- return (id_X11);
+ int* pPens = new int [nx * ny * scale * scale ];
+
+ double view_scale = 255 / (pmax - pmin);
+ int id_X11 = g2_open_X11 (nx * scale, ny * scale);
+ int grayscale[256];
+ for (int i = 0; i < 256; i++) {
+ double cval = i / 255.;
+ grayscale[i] = g2_ink (id_X11, cval, cval, cval);
+ }
+
+ for (int iy = ny - 1; iy >= 0; iy--) {
+ int iRowPos = ((ny - 1 - iy) * scale) * (nx * scale);
+ 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;
+ for (int sy = 0; sy < scale; sy++)
+ for (int sx = 0; sx < scale; sx++)
+ pPens[iRowPos+(sy * nx * scale)+(sx + (ix * scale))] = grayscale[cval];
+ }
+ }
+
+ g2_image (id_X11, 0., 0., nx * scale, ny * scale, pPens);
+
+ delete pPens;
+ return (id_X11);
#else
- return 0;
+ return 0;
#endif
}
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;
+ 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];
}
- 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;
- }
+ }
+ 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]);
}
-
- e = eMax;
-
- return true;
+ }
+
+ 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;
}
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;
+ 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);
-
+ 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
{
- int nx = m_nx;
- int ny = m_ny;
- ImageFileArrayConst v = getArray();
-
- if (v == NULL || nx == 0 || ny == 0)
- return;
+ ImageFileArrayConst v = getArray();
+ statistics (v, min, max, mean, mode, median, stddev);
+}
- 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];
+
+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];
}
}
- mean /= (nx * ny);
-
- static const int nbin = 1024;
- int hist[ nbin ] = {0};
- double spread = max - min;
- mode = 0;
- stddev = 0;
- for (int ix4 = 0; ix4 < nx; ix4++) {
- for (int iy = 0; iy < ny; iy++) {
- int b = static_cast<int>((((v[ix4][iy] - min) / spread) * (nbin - 1)) + 0.5);
- hist[b]++;
- double diff = (v[ix4][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;
+ }
+
+ 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;
+}
- mode = (max_binindex * spread / (nbin - 1)) + min;
- int nPixels = nx * ny;
- std::vector<double> vecImage;
- for (int ix5 = 0; ix5 < nx; ix5++)
- for (int iy = 0; iy < ny; iy++)
- vecImage.push_back (v[ix5][iy]);
- std::sort(vecImage.begin(), vecImage.end());\r
-\r
- if (nPixels % 2) // Odd
- median = vecImage[((nPixels - 1) / 2)];\r
- else // Even
- median = (vecImage[(nPixels / 2) - 1] + vecImage[nPixels / 2]) / 2;
+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;
+}
-void
-ImageFile::getMinMax (double& min, double& max) const
+bool
+ImageFile::log (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::log (cLHS);
+ vResult[ix][iy] = cResult.real();
+ vResultImag[ix][iy] = cResult.imag();
+ } else
+ vResult[ix][iy] = ::log (vLHS[ix][iy]);
+ }
+ }
+
+
+ return true;
+}
+
+bool
+ImageFile::exp (ImageFile& result) const
{
- int nx = m_nx;
- int ny = m_ny;
- ImageFileArrayConst v = getArray();
+ 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();
+
+ for (unsigned int ix = 0; ix < newNX; ix++) {
+ for (unsigned int iy = 0; iy < newNY; iy++) {
+ double dXPos = ix / dXScale;
+ double dYPos = iy / dYScale;
+ unsigned int scaleNX = static_cast<unsigned int> (dXPos);
+ unsigned int scaleNY = static_cast<unsigned int> (dYPos);
+ double dXFrac = dXPos - scaleNX;
+ double dYFrac = dYPos - scaleNY;
+ if (scaleNX >= nx - 1 || scaleNY >= ny - 1) {
+ vResult[ix][iy] = vReal[scaleNX][scaleNY];
+ if (result.isComplex()) {
+ if (isComplex())
+ vResultImag[ix][iy] = vImag[scaleNX][scaleNY];
+ else
+ vResultImag[ix][iy] = 0;
+ }
+ } else {
+ vResult[ix][iy] = (1 - dXFrac) * (1 - dYFrac) * vReal[scaleNX][scaleNY] +
+ dXFrac * (1 - dYFrac) * vReal[scaleNX+1][scaleNY] +
+ dYFrac * (1 - dXFrac) * vReal[scaleNX][scaleNY+1] +
+ dXFrac * dYFrac * vReal[scaleNX+1][scaleNY+1];
+ if (result.isComplex()) {
+ if (isComplex())
+ vResultImag[ix][iy] = (1 - dXFrac) * (1 - dYFrac) * vImag[scaleNX][scaleNY] +
+ dXFrac * (1 - dYFrac) * vImag[scaleNX+1][scaleNY] +
+ dYFrac * (1 - dXFrac) * vImag[scaleNX][scaleNY+1] +
+ dXFrac * dYFrac * vImag[scaleNX+1][scaleNY+1];
+ 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 = new 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].re = vReal[ix][iy];
+ if (isComplex())
+ in[iArray].im = vImag[ix][iy];
+ else
+ in[iArray].im = 0;
+ iArray++;
+ }
- if (v == NULL || nx == 0 || ny == 0)
- return;
+ fftwnd_plan plan = fftw2d_create_plan (m_nx, m_ny, FFTW_FORWARD, FFTW_IN_PLACE);
+
+ fftwnd_one (plan, in, NULL);
+
+ 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].re / iScale;
+ vImagResult[ix][iy] = in[iArray].im / iScale;
+ iArray++;
+ }
+
+ fftwnd_destroy_plan (plan);
+ delete in;
+
+
+ Fourier::shuffleFourierToNaturalOrder (result);
+
+ return true;
+}
- 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::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 = new 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].re = vRealResult[ix][iy];
+ in[iArray].im = vImagResult[ix][iy];
+ iArray++;
}
+
+ fftwnd_plan plan = fftw2d_create_plan (m_nx, m_ny, FFTW_BACKWARD, FFTW_IN_PLACE);
+
+ fftwnd_one (plan, in, NULL);
+
+ iArray = 0;
+ for (ix = 0; ix < m_nx; ix++)
+ for (iy = 0; iy < m_ny; iy++) {
+ vRealResult[ix][iy] = in[iArray].re;
+ vImagResult[ix][iy] = in[iArray].im;
+ iArray++;
+ }
+
+ fftwnd_destroy_plan (plan);
+
+ delete 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;
+ }
+
+ fftw_complex* in = new fftw_complex [m_nx];
+
+ ImageFileArrayConst vReal = getArray();
+ ImageFileArrayConst vImag = getImaginaryArray();
+
+ fftw_plan plan = fftw_create_plan (m_nx, FFTW_FORWARD, FFTW_IN_PLACE);
+ 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++) {
+ in[ix].re = vReal[ix][iy];
+ if (isComplex())
+ in[ix].im = vImag[ix][iy];
+ else
+ in[ix].im = 0;
+ }
+
+ fftw_one (plan, in, NULL);
+
+ for (ix = 0; ix < m_nx; ix++)
+ pcRow[ix] = std::complex<double>(in[ix].re, in[ix].im);
+
+ Fourier::shuffleFourierToNaturalOrder (pcRow, m_nx);
+ for (ix = 0; ix < m_nx; ix++) {
+ vReal[ix][iy] = pcRow[ix].real();
+ vImag[ix][iy] = pcRow[ix].imag();
+ }
+ }
+ delete [] pcRow;
+
+ fftw_destroy_plan (plan);
+ delete 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;
+ }
+
+ fftw_complex* in = new fftw_complex [m_nx];
+
+ ImageFileArrayConst vReal = getArray();
+ ImageFileArrayConst vImag = getImaginaryArray();
+
+ fftw_plan plan = fftw_create_plan (m_nx, FFTW_BACKWARD, FFTW_IN_PLACE);
+ 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].re = pcRow[ix].real();
+ in[ix].im = pcRow[ix].imag();
}
+
+ fftw_one (plan, in, NULL);
+
+ for (ix = 0; ix < m_nx; ix++) {
+ vReal[ix][iy] = in[ix].re;
+ vImag[ix][iy] = in[ix].im;
+ }
+ }
+ delete [] pcRow;
+
+ fftw_destroy_plan (plan);
+ delete in;
+
+ return true;
}
-void
-ImageFile::writeImagePGM (const char *outfile, int nxcell, int nycell, double densmin, double densmax)
+bool
+ImageFile::fftCols (ImageFile& result) const
+{
+ return false;
+}
+
+bool
+ImageFile::ifftCols (ImageFile& result) const
+{
+ return false;
+}
+
+#endif // HAVE_FFTW
+
+
+
+bool
+ImageFile::fourier (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.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);
+
+ // delete complexOut matrix
+ for (ix = 0; ix < m_nx; ix++)
+ delete [] complexOut[ix];
+ delete [] complexOut;
+
+ return true;
+}
+
+bool
+ImageFile::inverseFourier (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 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;
+ }
+
+ 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;
+
+ 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();
+ }
+
+ // delete complexOut matrix
+ for (ix = 0; ix < m_nx; ix++)
+ delete [] complexOut[ix];
+ delete [] complexOut;
+
+ 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;
+ }
+
+ 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] = vReal[ix][iy];
+ }
+
+ if (result.isComplex())
+ result.convertComplexToReal();
+
+ return true;
+}
+
+bool
+ImageFile::phase (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 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;
+ }
+
+ if (result.isComplex())
+ result.convertComplexToReal();
+
+ return true;
+}
+
+bool
+ImageFile::square (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 = cLHS * cLHS;
+ vResult[ix][iy] = cResult.real();
+ vResultImag[ix][iy] = cResult.imag();
+ } else
+ vResult[ix][iy] = vLHS[ix][iy] * vLHS[ix][iy];
+ }
+ }
+
+
+ return true;
+}
+
+int
+ImageFile::convertFormatNameToID (const char* const formatName)
+{
+ int formatID = FORMAT_INVALID;
+
+ for (int i = 0; i < s_iFormatCount; i++)
+ if (strcasecmp (formatName, s_aszFormatName[i]) == 0) {
+ formatID = i;
+ break;
+ }
+
+ return (formatID);
+}
+
+const char*
+ImageFile::convertFormatIDToName (int formatID)
+{
+ static const char *formatName = "";
+
+ if (formatID >= 0 && formatID < s_iFormatCount)
+ return (s_aszFormatName[formatID]);
+
+ return (formatName);
+}
+
+const char*
+ImageFile::convertFormatIDToTitle (const int formatID)
+{
+ static const char *formatTitle = "";
+
+ if (formatID >= 0 && formatID < s_iFormatCount)
+ return (s_aszFormatTitle[formatID]);
+
+ return (formatTitle);
+}
+
+bool
+ImageFile::exportImage (const char* const pszFormat, const char* const pszFilename, int nxcell, int nycell, double densmin, double densmax)
+{
+ int iFormatID = convertFormatNameToID (pszFormat);
+ if (iFormatID == FORMAT_INVALID) {
+ sys_error (ERR_SEVERE, "Invalid format %s [ImageFile::exportImage]", pszFormat);
+ return false;
+ }
+
+ if (iFormatID == FORMAT_PGM)
+ return writeImagePGM (pszFilename, nxcell, nycell, densmin, densmax);
+ else if (iFormatID == FORMAT_PGMASCII)
+ return writeImagePGMASCII (pszFilename, nxcell, nycell, densmin, densmax);
+ else if (iFormatID == FORMAT_PNG)
+ return writeImagePNG (pszFilename, 8, nxcell, nycell, densmin, densmax);
+ else if (iFormatID == FORMAT_PNG16)
+ return writeImagePNG (pszFilename, 16, nxcell, nycell, densmin, densmax);
+
+ sys_error (ERR_SEVERE, "Invalid format %s [ImageFile::exportImage]", pszFormat);
+ return false;
+}
+
+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 = 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);
fprintf(fp, "255\n");
-
+
for (int irow = ny - 1; irow >= 0; irow--) {
for (int icol = 0; icol < nx; icol++) {
int pos = icol * nxcell;
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++)
- fputc( rowp[ic], fp );
+ fputc( rowp[ic], fp );
}
}
-\r
+
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 = 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);
fprintf(fp, "255\n");
-
+
for (int irow = ny - 1; irow >= 0; irow--) {
for (int icol = 0; icol < nx; icol++) {
int pos = icol * nxcell;
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]);
+ fprintf(fp, "%d ", rowp[ic]);
fprintf(fp, "\n");
}
}
-\r
+
delete rowp;
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 = new unsigned char [nx * nxcell * (bitdepth / 8)];
-
- if ((fp = fopen (outfile, "wb")) == NULL)
- return;
-
- png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+
+ FILE *fp = fopen (outfile, "wb");
+ if (! fp)
+ return false;
+
+ png_structp png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (! png_ptr)
- return;
-
- info_ptr = png_create_info_struct(png_ptr);
+ return false;
+
+ 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_BASE, PNG_FILTER_TYPE_DEFAULT);
+
png_write_info(png_ptr, info_ptr);
for (int irow = ny - 1; irow >= 0; irow--) {
png_bytep row_pointer = rowp;
double dens = (v[icol][irow] - densmin) / (densmax - densmin);
dens = clamp (dens, 0., 1.);
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);
- delete rowp;\r
-
+
+ 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;
-
- gif = gdImageCreate(nx * nxcell, ny * nycell);
+
+ unsigned char* rowp = new unsigned char [nx * nxcell];
+
+ gdImagePtr gif = gdImageCreate(nx * nxcell, ny * nycell);
for (int i = 0; i < N_GRAYSCALE; i++)
gs_indices[i] = gdImageColorAllocate(gif, i, i, i);
-
+
int lastrow = ny * nycell - 1;
for (int irow = 0; irow < ny; irow++) {
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