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fbm12s.lha
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fbedge.c
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1994-07-18
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/*****************************************************************
* fbedge.c: FBM Release 1.2 07-Apr-93 Michael Mauldin
*
* Copyright (C) 1989-1993 by Gary Sherwin & Michael Mauldin.
* Permission is granted to use this file in whole or in part for
* any purpose, educational, recreational or commercial, provided
* that this copyright notice is retained unchanged. This software
* is available to all free of charge by anonymous FTP and in the
* UUNET archives.
*
*
* fbedge.c: Take derivative and edge detect image
*
* USAGE
* % fbedge [ flag ] < image > image2
*
* EDITLOG
* LastEditDate = Mon Jun 25 00:55:55 1990 - Michael Mauldin
* LastFileName = /usr2/mlm/src/misc/fbm/fbedge.c
*
* HISTORY
* 07-Apr-93 Michael Mauldin (mlm) at Carnegie-Mellon University
* Added -J switch
*
* 25-Jun-90 Michael Mauldin (mlm@cs.cmu.edu) Carnegie Mellon
* Package for Release 1.0
*
* 07-Mar-89 Michael Mauldin (mlm) at Carnegie Mellon University
* Beta release (version 0.9) mlm@cs.cmu.edu
*
* 07-Nov-88 Gary W. Sherwin (sherwin) at Westinghouse R&D
* Changed to fbedge.
*
* 10-Sep-88 Michael Mauldin (mlm) at Carnegie-Mellon University
* Created.
*****************************************************************/
# include <stdio.h>
# include <math.h>
# include "fbm.h"
# define USAGE "Usage: fbedge [ -t<threshhold> ] < bitmap > bitmap"
#ifndef lint
static char *fbmid =
"$FBM fbedge.c <1.2> 07-Apr-93 (C) 1989-1993 by Gary Sherwin & \
Michael Mauldin, source code available free from MLM@CS.CMU.EDU \
and from UUNET archives$";
#endif
main (argc, argv)
char *argv[];
{ int w, h, k;
int blacktrp = 0;
int outtype = DEF_1BIT;
FBM input, output;
/* Get the options */
while (--argc > 0 && (*++argv)[0] == '-')
{ while (*++(*argv))
{ switch (**argv)
{ case 't': blacktrp = atoi (*argv+1); SKIPARG; break;
case 'A': outtype = FMT_ATK; break;
case 'B': outtype = FMT_FACE; break;
case 'F': outtype = FMT_FBM; break;
case 'G': outtype = FMT_GIF; break;
case 'I': outtype = FMT_IFF; break;
case 'J': outtype = FMT_JPEG; break;
case 'L': outtype = FMT_LEAF; break;
case 'M': outtype = FMT_MCP; break;
case 'P': outtype = FMT_PBM; break;
case 'R': outtype = FMT_RLE; break;
case 'S': outtype = FMT_SUN; break;
case 'T': outtype = FMT_TIFF; break;
case 'X': outtype = FMT_X11; break;
case 'Z': outtype = FMT_PCX; break;
default: fprintf (stderr, "%s\n", USAGE);
exit (1);
}
}
}
/* Clear the memory pointers so alloc_fbm won't be confused */
input.cm = input.bm = (unsigned char *) NULL;
output.cm = output.bm = (unsigned char *) NULL;
/* Read the image and clean it */
if (read_bitmap (&input, (char *) NULL))
{
if (input.hdr.bits != 8 || input.hdr.physbits != 8)
{ fprintf (stderr,
"Can't handle images with %d bits and %d physbits per pixel\n",
input.hdr.bits, input.hdr.physbits);
exit (1);
}
/* Determine output height & width (oh*ow <= size) */
h = input.hdr.rows;
w = input.hdr.cols;
k = input.hdr.planes;
fprintf (stderr,
"Edge detect\"%s\", Black-trip %2d [%dx%dx%d]\n",
input.hdr.title[0] ? input.hdr.title : "(untitled)",
blacktrp, w, h, k);
/* Edge detect the image using a digitial Laplacian */
if (findedge_fbm (&input, &output, blacktrp) &&
write_bitmap (&output, stdout, outtype))
{ exit (0); }
}
exit (1);
}