format.cpp
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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifndef BR_EMBEDDED
#include <QNetworkAccessManager>
#include <QNetworkReply>
#endif // BR_EMBEDDED
#include <opencv2/highgui/highgui.hpp>
#include <openbr_plugin.h>
using namespace br;
using namespace cv;
/*!
* \ingroup formats
* \brief Reads a comma separated value file.
* \author Josh Klontz \cite jklontz
*/
class csvFormat : public Format
{
Q_OBJECT
QList<Mat> read() const
{
QFile f(file.name);
f.open(QFile::ReadOnly);
QStringList lines(QString(f.readAll()).split('\n'));
f.close();
QList< QList<float> > valsList;
foreach (const QString &line, lines) {
QList<float> vals;
foreach (const QString &word, line.split(QRegExp(" *, *"))) {
bool ok;
vals.append(word.toFloat(&ok)); assert(ok);
}
valsList.append(vals);
}
assert((valsList.size() > 0) && (valsList[0].size() > 0));
Mat m(valsList.size(), valsList[0].size(), CV_32FC1);
for (int i=0; i<valsList.size(); i++) {
assert(valsList[i].size() == valsList[0].size());
for (int j=0; j<valsList[i].size(); j++) {
m.at<float>(i,j) = valsList[i][j];
}
}
QList<Mat> mats;
mats.append(m);
return mats;
}
};
BR_REGISTER(Format, csvFormat)
/*!
* \ingroup formats
* \brief Reads image files.
* \author Josh Klontz \cite jklontz
*/
class DefaultFormat : public Format
{
Q_OBJECT
QList<Mat> read() const
{
QList<Mat> mats;
if (file.name.startsWith("http://") || file.name.startsWith("www.")) {
#ifndef BR_EMBEDDED
QNetworkAccessManager networkAccessManager;
QNetworkRequest request(file.name);
request.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::AlwaysNetwork);
QNetworkReply *reply = networkAccessManager.get(request);
while (!reply->isFinished()) QCoreApplication::processEvents();
if (reply->error()) qWarning("Url::read %s (%s).\n", qPrintable(reply->errorString()), qPrintable(QString::number(reply->error())));
QByteArray data = reply->readAll();
delete reply;
Mat m = imdecode(Mat(1, data.size(), CV_8UC1, data.data()), 1);
if (m.data) mats.append(m);
#endif // BR_EMBEDDED
} else {
QString prefix = "";
if (!QFileInfo(file.name).exists()) prefix = file.getString("path") + "/";
Mat m = imread((prefix+file.name).toStdString());
if (m.data) mats.append(m);
}
return mats;
}
};
BR_REGISTER(Format, DefaultFormat)
/*!
* \ingroup formats
* \brief Retrieves an image from a webcam.
* \author Josh Klontz \cite jklontz
*/
class webcamFormat : public Format
{
Q_OBJECT
QList<Mat> read() const
{
static QScopedPointer<VideoCapture> videoCapture;
if (videoCapture.isNull())
videoCapture.reset(new VideoCapture(0));
Mat m;
videoCapture->read(m);
return QList<Mat>() << m;
}
};
BR_REGISTER(Format, webcamFormat)
#include "format.moc"