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/*
* This file is part of Chalk
*
* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "fastcolortransfer.h"
#include <kgenericfactory.h>
#include <kurlrequester.h>
#include <kis_colorspace_factory_registry.h>
#include <kis_doc.h>
#include <kis_image.h>
#include <kis_iterators_pixel.h>
#include <kis_meta_registry.h>
#include <kis_paint_device.h>
#include "kis_wdg_fastcolortransfer.h"
#include "wdgfastcolortransfer.h"
typedef KGenericFactory<FastColorTransferPlugin> ChalkFastColorTransferFactory;
K_EXPORT_COMPONENT_FACTORY( chalkfastcolortransfer, ChalkFastColorTransferFactory( "chalk" ) )
FastColorTransferPlugin::FastColorTransferPlugin(TQObject *parent, const char *name, const TQStringList &)
: KParts::Plugin(parent, name)
{
setInstance(ChalkFastColorTransferFactory::instance());
kdDebug(41006) << "Color Transfer Filter plugin. Class: "
<< className()
<< ", Parent: "
<< parent -> className()
<< "\n";
if (parent->inherits("KisFilterRegistry")) {
KisFilterRegistry * manager = dynamic_cast<KisFilterRegistry *>(parent);
manager->add(new KisFilterFastColorTransfer());
}
}
FastColorTransferPlugin::~FastColorTransferPlugin()
{
}
KisFilterFastColorTransfer::KisFilterFastColorTransfer() : KisFilter(id(), "colors", i18n("&Color Transfer..."))
{
}
KisFilterConfigWidget * KisFilterFastColorTransfer::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP )
{
return new KisWdgFastColorTransfer(this, parent, "configuration of color to alpha");
}
KisFilterConfiguration* KisFilterFastColorTransfer::configuration(TQWidget* w)
{
KisWdgFastColorTransfer * wCTA = dynamic_cast<KisWdgFastColorTransfer*>(w);
KisFilterConfiguration* config = new KisFilterConfiguration(id().id(), 1);
if(wCTA)
{
config->setProperty("filename", wCTA->widget()->fileNameURLRequester->url() );
}
return config;
}
void KisFilterFastColorTransfer::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rect)
{
kdDebug() << "Start transfering color" << endl;
TQVariant value;
TQString fileName;
if (config && config->getProperty("filename", value))
{
fileName = value.toString();
} else {
kdDebug() << "No file name for the reference image was specified." << endl;
return;
}
KisPaintDeviceSP ref;
KisDoc d;
d.import(fileName);
KisImageSP importedImage = d.currentImage();
if(importedImage)
{
ref = importedImage->projection();
}
if(!ref)
{
kdDebug() << "No reference image was specified." << endl;
return;
}
// Convert ref and src to LAB
KisColorSpace* labCS = KisMetaRegistry::instance()->csRegistry()->getColorSpace(KisID("LABA"),"");
if(!labCS)
{
kdDebug() << "The LAB colorspace is not available." << endl;
return;
}
setProgressTotalSteps(5);
KisColorSpace* oldCS = src->colorSpace();
KisPaintDeviceSP srcLAB = new KisPaintDevice(*src.data());
srcLAB->convertTo(labCS);
ref->convertTo(labCS);
setProgress( 1 );
// Compute the means and sigmas of src
double meanL_src = 0., meanA_src = 0., meanB_src = 0.;
double sigmaL_src = 0., sigmaA_src = 0., sigmaB_src = 0.;
KisRectIteratorPixel srcLABIt = srcLAB->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), false );
while(!srcLABIt.isDone())
{
const TQ_UINT16* data = reinterpret_cast<const TQ_UINT16*>(srcLABIt.oldRawData());
TQ_UINT32 L = data[0];
TQ_UINT32 A = data[1];
TQ_UINT32 B = data[2];
meanL_src += L;
meanA_src += A;
meanB_src += B;
sigmaL_src += L*L;
sigmaA_src += A*A;
sigmaB_src += B*B;
++srcLABIt;
}
setProgress( 3 );
double size = 1. / ( rect.width() * rect.height() );
meanL_src *= size;
meanA_src *= size;
meanB_src *= size;
sigmaL_src *= size;
sigmaA_src *= size;
sigmaB_src *= size;
kdDebug() << size << " " << meanL_src << " " << meanA_src << " " << meanB_src << " " << sigmaL_src << " " << sigmaA_src << " " << sigmaB_src << endl;
// Compute the means and sigmas of src
double meanL_ref = 0., meanA_ref = 0., meanB_ref = 0.;
double sigmaL_ref = 0., sigmaA_ref = 0., sigmaB_ref = 0.;
KisRectIteratorPixel refIt = ref->createRectIterator(0, 0, importedImage->width(), importedImage->height(), false );
while(!refIt.isDone())
{
const TQ_UINT16* data = reinterpret_cast<const TQ_UINT16*>(refIt.oldRawData());
TQ_UINT32 L = data[0];
TQ_UINT32 A = data[1];
TQ_UINT32 B = data[2];
meanL_ref += L;
meanA_ref += A;
meanB_ref += B;
sigmaL_ref += L*L;
sigmaA_ref += A*A;
sigmaB_ref += B*B;
++refIt;
}
setProgress( 4 );
size = 1. / ( importedImage->width() * importedImage->height() );
meanL_ref *= size;
meanA_ref *= size;
meanB_ref *= size;
sigmaL_ref *= size;
sigmaA_ref *= size;
sigmaB_ref *= size;
kdDebug() << size << " " << meanL_ref << " " << meanA_ref << " " << meanB_ref << " " << sigmaL_ref << " " << sigmaA_ref << " " << sigmaB_ref << endl;
// Transfer colors
dst->convertTo(labCS);
{
double coefL = sqrt((sigmaL_ref - meanL_ref * meanL_ref) / (sigmaL_src - meanL_src * meanL_src));
double coefA = sqrt((sigmaA_ref - meanA_ref * meanA_ref) / (sigmaA_src - meanA_src * meanA_src));
double coefB = sqrt((sigmaB_ref - meanB_ref * meanB_ref) / (sigmaB_src - meanB_src * meanB_src));
kdDebug() << coefL << " " << coefA << " " << coefB << endl;
KisRectIteratorPixel dstIt = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true );
while(!dstIt.isDone())
{
TQ_UINT16* data = reinterpret_cast<TQ_UINT16*>(dstIt.rawData());
data[0] = (TQ_UINT16)CLAMP( ( (double)data[0] - meanL_src) * coefL + meanL_ref, 0., 65535.);
data[1] = (TQ_UINT16)CLAMP( ( (double)data[1] - meanA_src) * coefA + meanA_ref, 0., 65535.);
data[2] = (TQ_UINT16)CLAMP( ( (double)data[2] - meanB_src) * coefB + meanB_ref, 0., 65535.);
++dstIt;
}
}
dst->convertTo(oldCS);
setProgressDone(); // Must be called even if you don't really support progression
}
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