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/*
Laplacian Pyramid
Copyright (C) 2006 Yangli Hector Yee

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 _LPYRAMID_H
#define _LPYRAMID_H

#define MAX_PYR_LEVELS 8

class LPyramid
{
public:
LPyramid(const float *image, int width, int height);
~LPyramid();
float Get_Value(int x, int y, int level) const;
private:
float *Copy(const float *img) const;
void Convolve(float *a, const float *b) const;

// Successively blurred versions of the original image
float *Levels[MAX_PYR_LEVELS];

int Width;
int Height;
};

#endif // _LPYRAMID_H
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