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/*
//
// Copyright 2004-2010 SRI International
// Copyright 1997-2009 Torsten Rohlfing
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit 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 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit 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 the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 2398 $
//
// $LastChangedDate: 2010-10-05 14:54:37 -0700 (Tue, 05 Oct 2010) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#include <math.h>
#include <algorithm>
#include <Base/cmtkTypedArray.h>
#include <Base/cmtkTypedArrayFunctionHistogramMatching.h>
// test "TypedArray::MatchHistogramToReference" function
int
testTypedArrayMatchHistogram1()
{
float data1[] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
cmtk::TypedArray::SmartPtr array1( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data1, sizeof( data1 ) / sizeof( *data1 ), false /*freeArray*/ ) );
float data2[] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
cmtk::TypedArray::SmartPtr array2( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
array2->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *array2, *array1 ) );
float maxDeviation = 0;
for ( size_t i = 0; i<array2->GetDataSize(); ++i )
{
cmtk::Types::DataItem value;
array2->Get( value, i );
maxDeviation = std::max<float>( maxDeviation, fabs(value-data1[i]) );
}
if ( maxDeviation > 0.01 )
return 1;
else
return 0;
}
// test "TypedArray::MatchHistogramToReference" function
int
testTypedArrayMatchHistogram2()
{
float data1[] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
cmtk::TypedArray::SmartPtr array1( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data1, sizeof( data1 ) / sizeof( *data1 ), false /*freeArray*/ ) );
float data2[] = { 0.1, 0.1, 0.5, 0.5, 2.5, 2.5, 3.0, 3.0 };
float base2[] = { 0.0, 0.0, 1.0, 1.0, 2.0, 2.0, 3.0, 3.0 };
cmtk::TypedArray::SmartPtr array2( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
array2->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *array2, *array1 ) );
for ( size_t i = 0; i<array2->GetDataSize(); ++i )
{
cmtk::Types::DataItem value;
array2->Get( value, i );
}
float maxDeviation = 0;
for ( size_t i = 0; i<array2->GetDataSize(); ++i )
{
cmtk::Types::DataItem value;
array2->Get( value, i );
maxDeviation = std::max<float>( maxDeviation, fabs(value-base2[i]) );
}
if ( maxDeviation > 0.01 )
return 1;
else
return 0;
}
// test histogram matching from existing histograms
int
testTypedArrayMatchHistogram3()
{
float data1[] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
cmtk::TypedArray::SmartPtr array1( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data1, sizeof( data1 ) / sizeof( *data1 ), false /*freeArray*/ ) );
float data2[] = { 0.1, 0.1, 0.5, 0.5, 2.5, 2.5, 3.0, 3.0 };
cmtk::TypedArray::SmartPtr array2a( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
cmtk::TypedArray::SmartPtr array2b( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
array2a->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *array2a, *array1 ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist1( array1->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist2b( array2b->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins ) );
array2b->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *hist2b, *hist1 ) );
float maxDeviation = 0;
for ( size_t i = 0; i<array2b->GetDataSize(); ++i )
{
cmtk::Types::DataItem a, b;
array2a->Get( a, i );
array2b->Get( b, i );
maxDeviation = std::max<float>( maxDeviation, fabs(a-b) );
}
if ( maxDeviation > 1e-8 )
return 1;
else
return 0;
}
// test whether histogram matching breaks with unequal numbers of bins for both histograms.
int
testTypedArrayMatchHistogram4()
{
float data1[] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
cmtk::TypedArray::SmartPtr array1a( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data1, sizeof( data1 ) / sizeof( *data1 ), false /*freeArray*/ ) );
cmtk::TypedArray::SmartPtr array1b( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data1, sizeof( data1 ) / sizeof( *data1 ), false /*freeArray*/ ) );
float data2[] = { 0.1, 0.1, 0.5, 0.5, 2.5, 2.5, 3.0, 3.0 };
cmtk::TypedArray::SmartPtr array2a( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
cmtk::TypedArray::SmartPtr array2b( cmtk::TypedArray::Create( cmtk::TYPE_FLOAT, data2, sizeof( data2 ) / sizeof( *data2 ), false /*freeArray*/ ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist1a( array1a->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist2a( array2a->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins / 2 ) );
array2a->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *hist2a, *hist1a ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist1b( array1b->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins / 2 ) );
cmtk::TypedArrayFunctionHistogramMatching::HistogramType::SmartPtr hist2b( array2b->GetHistogram( cmtk::TypedArrayFunctionHistogramMatching::DefaultNumberOfHistogramBins ) );
array2b->ApplyFunctionObject( cmtk::TypedArrayFunctionHistogramMatching( *hist2b, *hist1b ) );
// here, we're only testing for crashes, leaks, etc.
return 0;
}
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