OutlierFilter.cpp

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// kate: replace-tabs off; indent-width 4; indent-mode normal
// vim: ts=4:sw=4:noexpandtab
/*

Copyright (c) 2010--2012,
François Pomerleau and Stephane Magnenat, ASL, ETHZ, Switzerland
You can contact the authors at <f dot pomerleau at gmail dot com> and
<stephane at magnenat dot net>

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
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      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the <organization> 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 ETH-ASL BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/

#include "PointMatcher.h"
#include "PointMatcherPrivate.h"
#include <limits>

using namespace std;

template<typename T>
PointMatcher<T>::OutlierFilter::OutlierFilter()
{}

template<typename T>
PointMatcher<T>::OutlierFilter::OutlierFilter(const std::string& className, const ParametersDoc paramsDoc, const Parameters& params):
    Parametrizable(className,paramsDoc,params)
{}

template<typename T>
PointMatcher<T>::OutlierFilter::~OutlierFilter()
{}

template struct PointMatcher<float>::OutlierFilter;
template struct PointMatcher<double>::OutlierFilter;


template<typename T>
typename PointMatcher<T>::OutlierWeights PointMatcher<T>::OutlierFilters::compute(
    const DataPoints& filteredReading,
    const DataPoints& filteredReference,
    const Matches& input)
{
    //FIXME: Why we filter infinit distance only when no filter?
    if (this->empty())
    {
        // we do not have any filter, therefore we must put 0 weights for infinite distances
        OutlierWeights w(input.dists.rows(), input.dists.cols());
        for (int x = 0; x < w.cols(); ++x)
        {
            for (int y = 0; y < w.rows(); ++y)
            {
                if (input.dists(y, x) == numeric_limits<T>::infinity())
                    w(y, x) = 0;
                else
                    w(y, x) = 1;
            }
        }
        return w;
    }
    else
    {
        // apply filters, they should take care of infinite distances
        //LOG_INFO_STREAM("Applying " << this->size() << " Outlier filters" );
        OutlierWeights w = (*this->begin())->compute(filteredReading, filteredReference, input);
        //LOG_INFO_STREAM("* " << (*this->begin())->className );
        if (this->size() > 1)
        {
            for (OutlierFiltersConstIt it = (this->begin() + 1); it != this->end(); ++it)
            {
                w = w.array() * (*it)->compute(filteredReading, filteredReference, input).array();
                //LOG_INFO_STREAM("* " << (*it)->className );
            }
        }

        return w;
    }
}



template struct PointMatcher<float>::OutlierFilters;
template struct PointMatcher<double>::OutlierFilters;