cxSlicedImageProxy.cpp

Go to the documentation of this file.

/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=========================================================================*/


#include "cxSlicedImageProxy.h"

#include <vtkImageReslice.h>
#include <vtkImageMapToWindowLevelColors.h>
#include <vtkWindowLevelLookupTable.h>
#include <vtkImageData.h>
#include <vtkMatrix4x4.h>
#include <vtkImageAlgorithm.h>
#include <vtkImageChangeInformation.h>
#include <vtkImageExtractComponents.h>
#include <vtkImageAppendComponents.h>

#include "cxImage.h"
#include "cxSliceProxy.h"
#include "cxImageLUT2D.h"
#include "cxTypeConversions.h"


namespace cx
{


ApplyLUTToImage2DProxy::ApplyLUTToImage2DProxy()
{
        mDummyImage = Image::createDummyImageData(1, 0);

        mRedirecter = vtkSmartPointer<vtkImageChangeInformation>::New(); // used for forwarding only.
        mRedirecter->SetInputData(mDummyImage);
}

ApplyLUTToImage2DProxy::~ApplyLUTToImage2DProxy()
{

}

void ApplyLUTToImage2DProxy::setInputData(vtkImageDataPtr image, vtkLookupTablePtr lut)
{
        vtkImageChangeInformationPtr redirecter = vtkImageChangeInformationPtr::New();
        redirecter->SetInputData(image);
        redirecter->Update();
        this->setInput(redirecter, lut);
}

void ApplyLUTToImage2DProxy::setInput(vtkImageAlgorithmPtr input, vtkLookupTablePtr lut)
{
        input->Update();

        if (input->GetOutput())
        {
                int numScalarComponents = input->GetOutput()->GetNumberOfScalarComponents();
                if ( numScalarComponents >= 3) // color
                {
                        // split the image into the components, apply the lut, then merge.

                        vtkImageAppendComponentsPtr merger = vtkImageAppendComponentsPtr::New();

                        for (int i = 0; i < numScalarComponents; ++i)
                        {
                                vtkImageMapToColorsPtr compWindowLevel = vtkImageMapToColorsPtr::New();
                                compWindowLevel->SetInputConnection(input->GetOutputPort());
                                compWindowLevel->SetActiveComponent(i);
                                compWindowLevel->SetLookupTable(lut);

                                if (i==2 && numScalarComponents==3)
                                {
                                        compWindowLevel->SetOutputFormatToLuminanceAlpha();
                                }
                                else
                                {
                                        compWindowLevel->SetOutputFormatToLuminance();
                                }

                                merger->AddInputConnection(compWindowLevel->GetOutputPort());
                        }

                        mRedirecter->SetInputConnection(merger->GetOutputPort());
                }
                else // grayscale
                {
                        vtkImageMapToColorsPtr windowLevel = vtkImageMapToColorsPtr::New();
                        windowLevel->SetOutputFormatToRGBA();
                        windowLevel->SetInputConnection(input->GetOutputPort());
                        windowLevel->SetLookupTable(lut);
                        mRedirecter->SetInputConnection(windowLevel->GetOutputPort());
                }
        }
        else // no image
        {
                mRedirecter->SetInputData(mDummyImage);
        }

        mRedirecter->Update();
}

vtkImageAlgorithmPtr ApplyLUTToImage2DProxy::getOutputPort()
{
        return mRedirecter;
}

vtkImageDataPtr ApplyLUTToImage2DProxy::getOutput()
{
        return mRedirecter->GetOutput();
}



SlicedImageProxy::SlicedImageProxy()
{
        mMatrixAxes = vtkMatrix4x4Ptr::New();

        mReslicer = vtkImageReslicePtr::New();
        mReslicer->SetInterpolationModeToLinear();
        mReslicer->SetOutputDimensionality(2);
        mReslicer->SetResliceAxes(mMatrixAxes);
        //mReslicer->SetAutoCropOutput(false); //faster update rate
        mReslicer->AutoCropOutputOn(); // fix used in 2.0.9, but slower update rate

        mImageWithLUTProxy.reset(new ApplyLUTToImage2DProxy());

        mRedirecter = vtkImageChangeInformationPtr::New();
}

SlicedImageProxy::~SlicedImageProxy()
{
}

void SlicedImageProxy::setOutputFormat(Vector3D origin, Eigen::Array3i dim, Vector3D spacing)
{
        mReslicer->SetOutputOrigin(origin.data());
        mReslicer->SetOutputExtent(0, dim[0], 0, dim[1], 0, 0);
        // this looks like the correct way, but gives incorrect output (the way it is used)
        // TODO investigate
//      mReslicer->SetOutputExtent(0, dim[0]-1, 0, dim[1]-1, 0, 0);
        mReslicer->SetOutputSpacing(spacing.data());
}

void SlicedImageProxy::setSliceProxy(SliceProxyInterfacePtr slicer)
{
        if (mSlicer)
        {
                disconnect(mSlicer.get(), SIGNAL(transformChanged(Transform3D)), this, SLOT(transformChangedSlot()));
        }
        mSlicer = slicer;
        if (mSlicer)
        {
                connect(mSlicer.get(), SIGNAL(transformChanged(Transform3D)), this, SLOT(transformChangedSlot()));
                update();
        }
}

void SlicedImageProxy::transferFunctionsChangedSlot()
{
        mReslicer->SetInputData(mImage->getBaseVtkImageData());
        mReslicer->SetBackgroundLevel(mImage->getMin());
        mImageWithLUTProxy->setInput(mRedirecter, mImage->getLookupTable2D()->getOutputLookupTable());
}

void SlicedImageProxy::updateRedirecterSlot()
{
        mRedirecter->SetInputConnection(mReslicer->GetOutputPort());
        update();
}

void SlicedImageProxy::setImage(ImagePtr image)
{
        if (mImage)
        {
                disconnect(mImage.get(), SIGNAL(transferFunctionsChanged()), this, SLOT(transferFunctionsChangedSlot()));
                disconnect(mImage.get(), SIGNAL(transformChanged()), this, SLOT(transformChangedSlot()));
                disconnect(mImage.get(), SIGNAL(vtkImageDataChanged()), this, SLOT(updateRedirecterSlot()));
        }

        mImage = image;

        if (mImage)
        {
                connect(mImage.get(), SIGNAL(transferFunctionsChanged()), this, SLOT(transferFunctionsChangedSlot()));
                connect(mImage.get(), SIGNAL(transformChanged()), this, SLOT(transformChangedSlot()));
                connect(mImage.get(), SIGNAL(vtkImageDataChanged()), this, SLOT(updateRedirecterSlot()));
        }

        if (mImage)
        {
                this->updateRedirecterSlot();
                this->transferFunctionsChangedSlot();
        }
        else // no image
        {
                mImageWithLUTProxy->setInput(vtkImageAlgorithmPtr(), vtkLookupTablePtr());
        }

        this->update();
}

ImagePtr SlicedImageProxy::getImage() const
{
        return mImage;
}

vtkImageDataPtr SlicedImageProxy::getOutput()
{
        return mImageWithLUTProxy->getOutput();
}

vtkImageAlgorithmPtr SlicedImageProxy::getOutputPort()
{
        return mImageWithLUTProxy->getOutputPort();
}

vtkImageDataPtr SlicedImageProxy::getOutputWithoutLUT()
{
        return mRedirecter->GetOutput();
}

vtkImageAlgorithmPtr SlicedImageProxy::getOutputPortWithoutLUT()
{
        return mRedirecter;
}

void SlicedImageProxy::update()
{
        if (!mImage)
                return;

        Transform3D rMs = Transform3D::Identity();
        if (mSlicer)
                rMs = mSlicer->get_sMr().inv();
        Transform3D iMr = mImage->get_rMd().inv();
        Transform3D M = iMr * rMs;

        mMatrixAxes->DeepCopy(M.getVtkMatrix());
}

void SlicedImageProxy::transformChangedSlot()
{
        update();
}

void SlicedImageProxy::printSelf(std::ostream & os, Indent indent)
{
        //os << indent << "PlaneType: " << mType << std::endl;
        os << indent << "mImage: " << (mImage ? mImage->getUid() : "NULL") << std::endl;
        os << indent << "mSlicer: " << (mSlicer ? mSlicer.get() : 0) << std::endl;
        if (mSlicer)
        {
                mSlicer->printSelf(os, indent.stepDown());
        }
        os << indent << "mReslicer->GetOutput(): " << mReslicer->GetOutput() << std::endl;
        os << indent << "mReslicer->GetInput() : " << mReslicer->GetInput() << std::endl;
        Transform3D test(mReslicer->GetResliceAxes());
        os << indent << "resliceaxes: " << std::endl;
        test.put(os, indent.getIndent() + 3);
        os << std::endl;
        //os << indent << "rMs_debug: " << std::endl;
        //rMs_debug.put(os, indent.getIndent()+3);

}

//---------------------------------------------------------
}//end namespace
//---------------------------------------------------------