mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 18:08:59 +00:00
dd727b9af5
Signed-off-by: Vicente Adolfo Bolea Sanchez <vicente.bolea@kitware.com>
109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
#ifndef vtk_m_worklet_ImageDifference_h
|
|
#define vtk_m_worklet_ImageDifference_h
|
|
|
|
#include <vtkm/VecTraits.h>
|
|
#include <vtkm/VectorAnalysis.h>
|
|
|
|
#include <vtkm/cont/ArrayHandle.h>
|
|
#include <vtkm/cont/DeviceAdapterAlgorithm.h>
|
|
|
|
#include <vtkm/worklet/WorkletMapField.h>
|
|
#include <vtkm/worklet/WorkletPointNeighborhood.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
|
|
class ImageDifferenceNeighborhood : public vtkm::worklet::WorkletPointNeighborhood
|
|
{
|
|
public:
|
|
using ControlSignature = void(CellSetIn, FieldInNeighborhood, FieldIn, FieldOut, FieldOut);
|
|
using ExecutionSignature = void(_2, _3, Boundary, _4, _5);
|
|
using InputDomain = _1;
|
|
|
|
ImageDifferenceNeighborhood(const vtkm::IdComponent& radius, const vtkm::FloatDefault& threshold)
|
|
: ShiftRadius(radius)
|
|
, Threshold(threshold)
|
|
{
|
|
}
|
|
|
|
template <typename InputFieldPortalType>
|
|
VTKM_EXEC void operator()(
|
|
const vtkm::exec::FieldNeighborhood<InputFieldPortalType>& primaryNeighborhood,
|
|
const typename InputFieldPortalType::ValueType& secondary,
|
|
const vtkm::exec::BoundaryState& boundary,
|
|
typename InputFieldPortalType::ValueType& diff,
|
|
vtkm::FloatDefault& diffThreshold) const
|
|
{
|
|
using T = typename InputFieldPortalType::ValueType;
|
|
|
|
auto minIndices = boundary.MinNeighborIndices(this->ShiftRadius);
|
|
auto maxIndices = boundary.MaxNeighborIndices(this->ShiftRadius);
|
|
|
|
T minPixelDiff{};
|
|
vtkm::FloatDefault minPixelDiffThreshold = 10000.0f;
|
|
for (vtkm::IdComponent i = minIndices[0]; i <= maxIndices[0]; i++)
|
|
{
|
|
for (vtkm::IdComponent j = minIndices[1]; j <= maxIndices[1]; j++)
|
|
{
|
|
for (vtkm::IdComponent k = minIndices[2]; k <= maxIndices[2]; k++)
|
|
{
|
|
diff = vtkm::Abs(primaryNeighborhood.Get(i, j, k) - secondary);
|
|
diffThreshold = static_cast<vtkm::FloatDefault>(vtkm::Magnitude(diff));
|
|
if (diffThreshold < this->Threshold)
|
|
{
|
|
return;
|
|
}
|
|
if (diffThreshold < minPixelDiffThreshold)
|
|
{
|
|
minPixelDiffThreshold = diffThreshold;
|
|
minPixelDiff = diff;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
diff = minPixelDiff;
|
|
diffThreshold = minPixelDiffThreshold;
|
|
}
|
|
|
|
private:
|
|
vtkm::IdComponent ShiftRadius;
|
|
vtkm::FloatDefault Threshold;
|
|
};
|
|
|
|
class ImageDifference : public vtkm::worklet::WorkletMapField
|
|
{
|
|
public:
|
|
using ControlSignature = void(FieldIn, FieldIn, FieldOut, FieldOut);
|
|
using ExecutionSignature = void(_1, _2, _3, _4);
|
|
using InputDomain = _1;
|
|
|
|
ImageDifference() = default;
|
|
|
|
template <typename T, vtkm::IdComponent Size>
|
|
VTKM_EXEC void operator()(const vtkm::Vec<T, Size>& primary,
|
|
const vtkm::Vec<T, Size>& secondary,
|
|
vtkm::Vec<T, Size>& diff,
|
|
vtkm::FloatDefault& diffThreshold) const
|
|
{
|
|
diff = vtkm::Abs(primary - secondary);
|
|
diffThreshold = static_cast<vtkm::FloatDefault>(vtkm::Magnitude(diff));
|
|
}
|
|
};
|
|
|
|
|
|
} // vtkm::worklet
|
|
} // vtkm
|
|
|
|
#endif // vtk_m_worklet_ImageDifference_h
|