sum.cpp
2.28 KB
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright 2012 The MITRE Corporation *
* *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <QtConcurrent>
#include <openbr/plugins/openbr_internal.h>
namespace br
{
/*!
* \ingroup distances
* \brief Sum match scores across multiple Distances
* \author Scott Klum \cite sklum
*/
class SumDistance : public UntrainableDistance
{
Q_OBJECT
Q_PROPERTY(QList<br::Distance*> distances READ get_distances WRITE set_distances RESET reset_distances)
BR_PROPERTY(QList<br::Distance*>, distances, QList<br::Distance*>())
void train(const TemplateList &data)
{
QFutureSynchronizer<void> futures;
foreach (br::Distance *distance, distances)
futures.addFuture(QtConcurrent::run(distance, &Distance::train, data));
futures.waitForFinished();
}
float compare(const Template &target, const Template &query) const
{
float result = 0;
foreach (br::Distance *distance, distances) {
result += distance->compare(target, query);
if (result == -std::numeric_limits<float>::max())
return result;
}
return result;
}
};
BR_REGISTER(Distance, SumDistance)
} // namespace br
#include "distance/sum.moc"