119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/* This file is a part of plaYUVer project
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* Copyright (C) 2014-2016 by Luis Lucas (luisfrlucas@gmail.com)
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* Joao Carreira (jfmcarreira@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* \file WeightedPSNR.cpp
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* \brief Weighted PSNR quality module
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*/
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#include "WeightedPSNR.h"
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#include <cmath>
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WeightedPSNR::WeightedPSNR()
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{
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/* Module Definition */
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m_iModuleAPI = MODULE_API_2;
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m_iModuleType = FRAME_MEASUREMENT_MODULE;
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m_pchModuleCategory = "Quality";
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m_pchModuleName = "WeightedPSNR";
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m_pchModuleTooltip = "Measure the weighted PSNR between two images";
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m_uiModuleRequirements = MODULE_REQUIRES_OPTIONS;
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m_uiNumberOfFrames = MODULE_REQUIRES_THREE_FRAMES;
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m_cModuleOptions.addOptions()/**/
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( "Component", m_uiComponent, "Select the component to compute quality [0]" );
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m_uiComponent = 0;
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}
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Bool WeightedPSNR::create( std::vector<PlaYUVerFrame*> apcFrameList )
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{
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_BASIC_MODULE_API_2_CHECK_
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for( UInt i = 0; i < apcFrameList.size(); i++ )
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{
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if( !apcFrameList[i]->haveSameFmt( apcFrameList[0], PlaYUVerFrame::MATCH_RESOLUTION ) )
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return false;
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}
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if( apcFrameList[0]->getNumberChannels() != 1 )
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{
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return false;
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}
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for( UInt i = 1; i < apcFrameList.size(); i++ )
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{
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if( !apcFrameList[i]->haveSameFmt( apcFrameList[1], PlaYUVerFrame::MATCH_COLOR_SPACE | PlaYUVerFrame::MATCH_BITS ) )
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return false;
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}
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return true;
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}
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Double measureWMSE( Int component, PlaYUVerFrame* Org, PlaYUVerFrame* Rec, PlaYUVerFrame* Mask )
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{
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Pel* pMaskPelYUV = Mask->getPelBufferYUV()[0][0];
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Pel* pRecPelYUV = Rec->getPelBufferYUV()[component][0];
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Pel* pOrgPelYUV = Org->getPelBufferYUV()[component][0];
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Double aux_pel_1, aux_pel_2, aux_pel_mask;
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Int diff = 0;
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Double ssd = 0;
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UInt count = 0;
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UInt numberOfPixels = 0;
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if( component == LUMA )
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{
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numberOfPixels = Org->getHeight() * Org->getWidth();
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}
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else
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{
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numberOfPixels = Rec->getChromaLength();
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}
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for( UInt i = 0; i < numberOfPixels; i++ )
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{
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aux_pel_mask = *pMaskPelYUV++;
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aux_pel_1 = *pRecPelYUV++;
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aux_pel_2 = *pOrgPelYUV++;
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diff = aux_pel_1 - aux_pel_2;
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ssd += ( aux_pel_mask * diff * diff );
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count += aux_pel_mask;
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}
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if( ssd == 0.0 )
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{
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return 0.0;
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}
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return ssd / Double( count );
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}
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Double WeightedPSNR::measure( std::vector<PlaYUVerFrame*> apcFrameList )
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{
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Double dPSNR = 100;
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Double dMaxValue = ( 1 << apcFrameList[1]->getBitsPel() ) - 1;
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Double dMSE = measureWMSE( m_uiComponent, apcFrameList[1], apcFrameList[2], apcFrameList[0] );
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if( dMSE != 0 )
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dPSNR = 10 * log10( ( dMaxValue * dMaxValue ) / dMSE );
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return dPSNR;
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}
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Void WeightedPSNR::destroy()
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{
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}
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