ImageWeightedMean.h

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/*
SyneRBI Synergistic Image Reconstruction Framework (SIRF)
Copyright 2017 - 2019 University College London
 
This is software developed for the Collaborative Computational
Project in Synergistic Reconstruction for Biomedical Imaging (formerly CCP PETMR)
(http://www.ccpsynerbi.ac.uk/).
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 
*/
 
#pragma once
 
#include <vector>
#include <memory>
 
namespace sirf {
 
// Forward delcarations
template<class dataType> class NiftiImageData;
 
template<class dataType>
class ImageWeightedMean
{
public:
 
    ImageWeightedMean();
 
    ~ImageWeightedMean() {}
 
    void add_image(const NiftiImageData<dataType> &image, const float weight);
 
    void process();
 
    const std::shared_ptr<const NiftiImageData<dataType> > get_output_sptr() const { return _output_image_sptr; }
 
protected:
 
    void check_can_do_mean() const;
 
    bool _need_to_update;
    std::vector<std::shared_ptr<const NiftiImageData<dataType> > > _input_image_sptrs;
    std::vector<float> _weights;
    std::shared_ptr<NiftiImageData<dataType> > _output_image_sptr;
 
};
}