pipe.cpp
2.54 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 Distances in series.
* \author Josh Klontz \cite jklontz
*
* The templates are compared using each br::Distance in order.
* If the result of the comparison with any given distance is -FLOAT_MAX then this result is returned early.
* Otherwise the returned result is the value of comparing the templates using the last br::Distance.
*/
class PipeDistance : public Distance
{
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 &a, const Template &b) const
{
float result = -std::numeric_limits<float>::max();
foreach (br::Distance *distance, distances) {
result = distance->compare(a, b);
if (result == -std::numeric_limits<float>::max())
return result;
}
return result;
}
};
BR_REGISTER(Distance, PipeDistance)
} // namespace br
#include "distance/pipe.moc"