crop.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 <opencv2/imgproc/imgproc.hpp>
#include <openbr_plugin.h>
#include "core/opencvutils.h"
using namespace cv;
using namespace br;
/*!
* \ingroup transforms
* \brief Crops the regions of interest.
* \author Josh Klontz \cite jklontz
*/
class ROI : public UntrainableTransform
{
Q_OBJECT
void project(const Template &src, Template &dst) const
{
foreach (const QRectF ROI, src.file.ROIs())
dst += src.m()(OpenCVUtils::toRect(ROI));
}
};
BR_REGISTER(Transform, ROI)
/*!
* \ingroup transforms
* \brief Resize the template
* \author Josh Klontz \cite jklontz
*/
class Resize : public UntrainableTransform
{
Q_OBJECT
Q_PROPERTY(int rows READ get_rows WRITE set_rows RESET reset_rows STORED false)
Q_PROPERTY(int columns READ get_columns WRITE set_columns RESET reset_columns STORED false)
BR_PROPERTY(int, rows, -1)
BR_PROPERTY(int, columns, -1)
void project(const Template &src, Template &dst) const
{
resize(src, dst, Size((columns == -1) ? src.m().cols*rows/src.m().rows : columns, rows));
}
};
BR_REGISTER(Transform, Resize)
/*!
* \ingroup transforms
* \brief Limit the size of the template
* \author Josh Klontz \cite jklontz
*/
class LimitSize : public UntrainableTransform
{
Q_OBJECT
Q_PROPERTY(int max READ get_max WRITE set_max RESET reset_max STORED false)
BR_PROPERTY(int, max, -1)
void project(const Template &src, Template &dst) const
{
const Mat &m = src;
if (m.rows > m.cols)
if (m.rows > max) resize(m, dst, Size(std::max(1, m.cols * max / m.rows), max));
else dst = m;
else
if (m.cols > max) resize(m, dst, Size(max, std::max(1, m.rows * max / m.cols)));
else dst = m;
}
};
BR_REGISTER(Transform, LimitSize)
/*!
* \ingroup transforms
* \brief Crop out black borders
* \author Josh Klontz \cite jklontz
*/
class CropBlack : public UntrainableTransform
{
Q_OBJECT
void project(const Template &src, Template &dst) const
{
Mat gray;
OpenCVUtils::cvtGray(src, gray);
int xStart = 0;
while (xStart < gray.cols) {
if (mean(gray.col(xStart))[0] >= 1) break;
xStart++;
}
int xEnd = gray.cols - 1;
while (xEnd >= 0) {
if (mean(gray.col(xEnd))[0] >= 1) break;
xEnd--;
}
int yStart = 0;
while (yStart < gray.rows) {
if (mean(gray.col(yStart))[0] >= 1) break;
yStart++;
}
int yEnd = gray.rows - 1;
while (yEnd >= 0) {
if (mean(gray.col(yEnd))[0] >= 1) break;
yEnd--;
}
dst = src.m()(Rect(xStart, yStart, xEnd-xStart, yEnd-yStart));
}
};
BR_REGISTER(Transform, CropBlack)
#include "crop.moc"