92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2015, Itseez Inc, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Itseez Inc or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "dpm_convolution.hpp"
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namespace cv
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{
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namespace dpm
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{
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double ConvolutionEngine::convolve(const Mat &feat, const Mat &filter,
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int dimHOG, int x, int y)
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{
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double val = 0;
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for (int yp = 0; yp < filter.rows; yp++)
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{
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const double *pfeat = (double*)feat.ptr(y + yp) + x * dimHOG;
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const double *pfilter = (double*)filter.ptr(yp);
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for (int xp = 0; xp < filter.cols; xp++)
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{
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val += pfeat[xp] * pfilter[xp];
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}
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}
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return val;
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}
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void ConvolutionEngine::convolve(const Mat &feat, const Mat &filter,
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int dimHOG, Mat &result)
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{
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for (int y = 0; y < result.rows; y++)
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{
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double *presult = (double*)result.ptr(y);
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for (int x = 0; x < result.cols; x++)
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{
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double val = 0;
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for (int yp = 0; yp < filter.rows; yp++)
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{
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const double *pfeat = (double*)feat.ptr(y + yp) + x * dimHOG;
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const double *pfilter = (double*)filter.ptr(yp);
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for (int xp = 0; xp < filter.cols; xp++)
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{
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val += pfeat[xp] * pfilter[xp];
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}
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} // yp
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presult[x] = val;
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} // x
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} // y
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}
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} // namespace cv
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} // namespace dpm
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