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812fd53499
The perceptualdiff program was written by Hector Yee with contributions from Scott Corley and Mick Weiss. It is hosted at http://pdiff.sourceforge.net The source code added here was obtained by: svn co https://svn.sourceforge.net/svnroot/pdiff/trunk pdiff which gave revision 22 of the source code. The perceptualdiff program is available under the terms of the GNU GPL, so I've added a note to COPYING about this program, (and the fact that it is auxiliary only, and does not affect the license of the implementation of cairo itself).
38 lines
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1.2 KiB
C++
38 lines
No EOL
1.2 KiB
C++
/*
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Laplacian Pyramid
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Copyright (C) 2006 Yangli Hector Yee
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This program is free software; you can redistribute it and/or modify it under the terms of the
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GNU General Public License as published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with this program;
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if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LPYRAMID_H
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#define _LPYRAMID_H
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#define MAX_PYR_LEVELS 8
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class LPyramid
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{
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public:
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LPyramid(float *image, int width, int height);
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virtual ~LPyramid();
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float Get_Value(int x, int y, int level);
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protected:
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float *Copy(float *img);
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void Convolve(float *a, float *b);
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// Succesively blurred versions of the original image
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float *Levels[MAX_PYR_LEVELS];
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int Width;
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int Height;
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};
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#endif // _LPYRAMID_H
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