bee.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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <QFile>
#include <QFileInfo>
#include <QHash>
#include <QMap>
#include <QRegExp>
#ifndef BR_EMBEDDED
#include <QtXml>
#endif // BR_EMBEDDED
#include <algorithm>
#include <limits>
#include <openbr_plugin.h>
#include "bee.h"
#include "opencvutils.h"
#include "qtutils.h"
using namespace cv;
using namespace br;
/**** BEE ****/
FileList BEE::readSigset(const QString &sigset, bool ignoreMetadata)
{
FileList fileList;
#ifndef BR_EMBEDDED
QDomDocument doc(sigset);
QFile file(sigset);
bool success;
success = file.open(QIODevice::ReadOnly); if (!success) qFatal("Unable to open %s for reading.", qPrintable(sigset));
success = doc.setContent(&file); if (!success) qFatal("Unable to parse %s.", qPrintable(sigset));
file.close();
QDomElement docElem = doc.documentElement();
if (docElem.nodeName() != "biometric-signature-set")
return fileList;
QDomNode subject = docElem.firstChild();
while (!subject.isNull()) {
// Looping through subjects
QDomNode fileNode = subject.firstChild();
QDomElement d = subject.toElement();
QString name = d.attribute("name");
while (!fileNode.isNull()) {
// Looping through files
File file;
QDomElement e = fileNode.toElement();
QDomNamedNodeMap attributes = e.attributes();
for (int i=0; i<attributes.length(); i++) {
QString key = attributes.item(i).nodeName();
QString value = attributes.item(i).nodeValue();
if (key == "file-name") {
File newFile(value, name);
newFile.append(file);
file = newFile;
} else if (!ignoreMetadata) {
file.insert(key, value);
}
}
if (file.isNull()) qFatal("Empty file-name in %s.", qPrintable(sigset));
fileList.append(file);
fileNode = fileNode.nextSibling();
}
subject = subject.nextSibling();
}
#else // BR_EMBEDDED
(void) sigset;
(void) ignoreMetadata;
#endif // BR_EMBEDDED
return fileList;
}
void BEE::writeSigset(const QString &sigset, const br::FileList &files, bool ignoreMetadata)
{
QStringList lines; lines.reserve(3*files.size()+3);
lines.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
lines.append("<biometric-signature-set>");
foreach (const File &file, files) {
QStringList metadata;
if (!ignoreMetadata)
foreach (const QString &key, file.localKeys())
metadata.append(key+"=\""+file.getString(key, "?")+"\"");
lines.append("\t<biometric-signature name=\"" + file.subject() +"\">");
lines.append("\t\t<presentation file-name=\"" + file.name + "\" " + metadata.join(" ") + "/>");
lines.append("\t</biometric-signature>");
}
lines.append("</biometric-signature-set>");
QtUtils::writeFile(sigset, lines);
}
template <typename T>
Mat readMatrix(const br::File &matrix)
{
// Special case matrix construction
if (matrix == "Matrix") {
const int size = matrix.getInt("Size");
const int step = matrix.getInt("Step", 1);
if (size % step != 0) qFatal("Step does not divide size evenly.");
if (sizeof(T) == sizeof(BEE::Mask_t)) {
const bool selfSimilar = matrix.getBool("SelfSimilar");
Mat m(size, size, CV_8UC1);
m.setTo(BEE::NonMatch);
for (int i=0; i<size; i+=step)
for (int j=0; j<step; j++)
for (int k=0; k<step; k++)
m.at<BEE::Mask_t>(i+j,i+k) = ((selfSimilar && (j == k)) ? BEE::DontCare : BEE::Match);
return m;
} else if (sizeof(T) == sizeof(BEE::Simmat_t)) {
Mat m(size, size, CV_32FC1);
m.setTo(BEE::NonMatch);
for (int i=0; i<size; i+=step)
for (int j=0; j<step; j++)
for (int k=0; k<step; k++)
m.at<BEE::Simmat_t>(i+j,i+k) = 1;
return m;
}
}
QFile file(matrix);
bool success = file.open(QFile::ReadOnly);
if (!success) qFatal("Unable to open %s for reading.", qPrintable((QString)matrix));
// Check format
QByteArray format = file.readLine();
bool isDistance = (format[0] == 'D');
if (format[1] != '2') qFatal("Invalid matrix header.");
// Skip sigset lines
file.readLine();
file.readLine();
// Get matrix size
QStringList words = QString(file.readLine()).split(" ");
int rows = words[1].toInt();
int cols = words[2].toInt();
// Get matrix data
qint64 bytesExpected = (qint64)rows*(qint64)cols*(qint64)sizeof(T);
Mat m(rows, cols, OpenCVType<T,1>::make());
if (file.read((char*)m.data, bytesExpected) != bytesExpected)
qFatal("Invalid matrix size.");
file.close();
Mat result;
if (isDistance ^ matrix.getBool("Negate")) m.convertTo(result, -1, -1);
else result = m.clone();
return result;
}
Mat BEE::readSimmat(const br::File &simmat)
{
return readMatrix<Simmat_t>(simmat);
}
Mat BEE::readMask(const br::File &mask)
{
return readMatrix<Mask_t>(mask);
}
template <typename T>
void writeMatrix(const Mat &m, const QString &matrix, const QString &targetSigset, const QString &querySigset)
{
if (m.type() != OpenCVType<T,1>::make()) qFatal("Invalid matrix type.");
int elemSize = sizeof(T);
QString matrixType;
if (elemSize == 1) matrixType = "B";
else if (elemSize == 4) matrixType = "F";
else qFatal("Invalid element size.");
char buff[4];
QFile file(matrix);
bool success = file.open(QFile::WriteOnly); if (!success) qFatal("Unable to open %s for writing.", qPrintable(matrix));
file.write("S2\n");
file.write(qPrintable(QFileInfo(targetSigset).fileName()));
file.write("\n");
file.write(qPrintable(QFileInfo(querySigset).fileName()));
file.write("\n");
file.write("M");
file.write(qPrintable(matrixType));
file.write(" ");
file.write(qPrintable(QString::number(m.rows)));
file.write(" ");
file.write(qPrintable(QString::number(m.cols)));
file.write(" ");
int endian = 0x12345678;
memcpy(&buff, &endian, 4);
file.write(buff, 4);
file.write("\n");
file.write((const char*)m.data, m.rows*m.cols*elemSize);
file.close();
}
void BEE::writeSimmat(const Mat &m, const QString &simmat, const QString &targetSigset, const QString &querySigset)
{
writeMatrix<Simmat_t>(m, simmat, targetSigset, querySigset);
}
void BEE::writeMask(const Mat &m, const QString &mask, const QString &targetSigset, const QString &querySigset)
{
writeMatrix<Mask_t>(m, mask, targetSigset, querySigset);
}
void BEE::makeMask(const QString &targetInput, const QString &queryInput, const QString &mask)
{
qDebug("Making mask from %s and %s to %s", qPrintable(targetInput), qPrintable(queryInput), qPrintable(mask));
FileList targetFiles = TemplateList::fromGallery(targetInput).files();
FileList queryFiles = TemplateList::fromGallery(queryInput).files();
QList<float> targetLabels = targetFiles.labels();
QList<float> queryLabels = queryFiles.labels();
QList<int> targetPartitions = targetFiles.crossValidationPartitions();
QList<int> queryPartitions = queryFiles.crossValidationPartitions();
Mat vals(queryFiles.size(), targetFiles.size(), CV_8UC1);
for (int i=0; i<queryFiles.size(); i++) {
const QString &fileA = queryFiles[i];
const int labelA = queryLabels[i];
const int partitionA = queryPartitions[i];
for (int j=0; j<targetFiles.size(); j++) {
const QString &fileB = targetFiles[j];
const int labelB = targetLabels[j];
const int partitionB = targetPartitions[j];
Mask_t val;
if (fileA == fileB) val = DontCare;
else if (labelA == -1) val = DontCare;
else if (labelB == -1) val = DontCare;
else if (partitionA != partitionB) val = DontCare;
else if (labelA == labelB) val = Match;
else val = NonMatch;
vals.at<Mask_t>(i,j) = val;
}
}
writeMask(vals, mask, targetInput, queryInput);
}
void BEE::combineMasks(const QStringList &inputMasks, const QString &outputMask, const QString &method)
{
qDebug("Combining %d masks to %s with method %s", inputMasks.size(), qPrintable(outputMask), qPrintable(method));
bool AND = true;
if (method == "And") AND = true;
else if (method == "Or") AND = false;
else qFatal("Invalid method.");
QList<Mat> masks;
foreach (const QString &inputMask, inputMasks)
masks.append(readMask(inputMask));
if (masks.size() < 2) qFatal("Expected at least two masks.");
const int rows = masks.first().rows;
const int columns = masks.first().cols;
Mat combinedMask(rows, columns, CV_8UC1);
for (int i=0; i<rows; i++) {
for (int j=0; j<columns; j++) {
int genuineCount = 0;
int imposterCount = 0;
int dontcareCount = 0;
for (int k=0; k<masks.size(); k++) {
switch (masks[k].at<Mask_t>(i,j)) {
case Match:
genuineCount++;
break;
case NonMatch:
imposterCount++;
break;
case DontCare:
dontcareCount++;
break;
}
}
if ((genuineCount != 0) && (imposterCount != 0)) qFatal("Comparison is both a genuine and an imposter.");
Mask_t val;
if (genuineCount > 0) val = Match;
else if (imposterCount > 0) val = NonMatch;
else val = DontCare;
if (AND && (dontcareCount > 0)) val = DontCare;
combinedMask.at<Mask_t>(i,j) = val;
}
}
writeMask(combinedMask, outputMask, "Combined_Targets", "Combined_Queries");
}