/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 <openbr/plugins/openbr_internal.h>

using namespace cv;

namespace br
{

/*!
 * \ingroup transforms
 * \brief Approximate floats as signed bit.
 * \author Josh Klontz \cite jklontz
 */
class BinarizeTransform : public UntrainableTransform
{
    Q_OBJECT

    void project(const Template &src, Template &dst) const
    {
        const Mat &m = src;
        if ((m.cols % 8 != 0) || (m.type() != CV_32FC1))
            qFatal("Expected CV_32FC1 matrix with a multiple of 8 columns.");
        Mat n(m.rows, m.cols/8, CV_8UC1);
        for (int i=0; i<m.rows; i++)
            for (int j=0; j<m.cols-7; j+=8)
                n.at<uchar>(i,j) = ((m.at<float>(i,j+0) > 0) << 0) +
                                   ((m.at<float>(i,j+1) > 0) << 1) +
                                   ((m.at<float>(i,j+2) > 0) << 2) +
                                   ((m.at<float>(i,j+3) > 0) << 3) +
                                   ((m.at<float>(i,j+4) > 0) << 4) +
                                   ((m.at<float>(i,j+5) > 0) << 5) +
                                   ((m.at<float>(i,j+6) > 0) << 6) +
                                   ((m.at<float>(i,j+7) > 0) << 7);
        dst = n;
    }
};

BR_REGISTER(Transform, BinarizeTransform)

} // namespace br

#include "imgproc/binarize.moc"
