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/*
Laplacian Pyramid
Copyright (C) 2006-2011 Yangli Hector Yee
Copyright (C) 2011-2016 Steven Myint, Jeff Terrace
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef PERCEPTUALDIFF_LPYRAMID_H
#define PERCEPTUALDIFF_LPYRAMID_H
#include <vector>
namespace pdiff
{
#if _MSC_VER >= 1900
constexpr auto MAX_PYR_LEVELS = 8u;
#else
#define MAX_PYR_LEVELS 8u
#endif
class LPyramid
{
public:
LPyramid(const std::vector<float> &image,
unsigned int width,
unsigned int height);
float get_value(unsigned int x, unsigned int y, unsigned int level) const;
private:
void convolve(std::vector<float> &a, const std::vector<float> &b) const;
// Successively blurred versions of the original image.
std::vector<float> levels_[MAX_PYR_LEVELS];
unsigned int width_;
unsigned int height_;
};
}
#endif
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