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Eddy
2014-10-10 17:36:02 +04:00
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erosion-dilation/dilation.h Normal file
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/*
* dilation.h - inner part of function `dilation`
*
* Copyright 2013 Edward V. Emelianoff <eddy@sao.ru>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
/*
* HERE'S NO ANY "FILE-GUARDS" BECAUSE FILE IS MULTIPLY INCLUDED!
* I use this because don't want to dive into depths of BOOST
*
* multi-including with different defines before - is a simplest way to
* modify simple code for avoiding extra if-then-else
*/
#if ! defined IM_UP && ! defined IM_DOWN // image without upper and lower borders
OMP_FOR()
for(y = 1; y < h; y++)
#endif
{
unsigned char *iptr = &image[W*y];
unsigned char *optr = &ret[W*y];
unsigned char p = DIL[*iptr]
#ifndef IM_UP
| iptr[-W]
#endif
#ifndef IM_DOWN
| iptr[W]
#endif
;
int x;
if(iptr[1] & 0x80) p |= 1;
*optr = p;
optr++; iptr++;
for(x = 1; x < w; x++, iptr++, optr++){
p = DIL[*iptr]
#ifndef IM_UP
| iptr[-W]
#endif
#ifndef IM_DOWN
| iptr[W]
#endif
;
if(iptr[1] & 0x80) p |= 1;
if(iptr[-1] & 1) p |= 0x80;
*optr = p;
}
p = DIL[*iptr]
#ifndef IM_UP
| iptr[-W]
#endif
#ifndef IM_DOWN
| iptr[W]
#endif
;
if(iptr[-1] & 1) p |= 0x80;
*optr = p;
optr++; iptr++;
}