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/** @file mser-driver.c
** @author Andrea Vedaldi
** @brief MSER command line driver - Definition
** @internal
**/
/* AUTORIGHTS
Copyright (C) 2007-09 Andrea Vedaldi and Brian Fulkerson
This file is part of VLFeat, available in the terms of the GNU
General Public License version 2.
*/
#define VL_MSER_DRIVER_VERSION 0.1
#include "generic-driver.h"
#include <vl/generic.h>
#include <vl/stringop.h>
#include <vl/pgm.h>
#include <vl/mser.h>
#include <vl/getopt_long.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
/* ----------------------------------------------------------------- */
/* help message */
char const help_message [] =
"Usage: %s [options] files ...\n"
"\n"
"Options include:\n"
" --verbose -v Be verbose\n"
" --help -h Print this help message\n"
" --seeds Specify seeds file\n"
" --frames Specify frames file\n"
" --meta Specify meta file\n"
" --delta -d Specify MSER delta paramter\n"
" --epsilon -e Specify MSER epsilon parameter\n"
" --no-dups Remove duplicate\n"
" --dups Keep duplicates\n"
" --max-area Specify maximum region (relative) area\n"
" --min-area Specify minimum region (relative) area\n"
" --max-variation Specify maximum absolute region stability\n"
"\n" ;
/* ----------------------------------------------------------------- */
/* long options codes */
enum {
opt_seed = 1000,
opt_frame,
opt_meta,
opt_max_area,
opt_min_area,
opt_max_variation,
opt_min_diversity
} ;
/* short options */
char const opts [] = "vhd:" ;
/* long options */
struct option const longopts [] = {
{ "verbose", no_argument, 0, 'v' },
{ "help", no_argument, 0, 'h' },
{ "delta", required_argument, 0, 'd' },
{ "seeds", optional_argument, 0, opt_seed },
{ "frames", optional_argument, 0, opt_frame },
{ "meta", optional_argument, 0, opt_meta },
{ "max-area", required_argument, 0, opt_max_area },
{ "min-area", required_argument, 0, opt_min_area },
{ "max-variation", required_argument, 0, opt_max_variation },
{ "min-diversity", required_argument, 0, opt_min_diversity },
{ 0, 0, 0, 0 }
} ;
/* ----------------------------------------------------------------- */
/** @brief MSER driver entry point
**/
int
main(int argc, char **argv)
{
/* algorithm parameters */
double delta = -1 ;
double max_area = -1 ;
double min_area = -1 ;
double max_variation = -1 ;
double min_diversity = -1 ;
vl_bool err = VL_ERR_OK ;
char err_msg [1024] ;
int n ;
int exit_code = 0 ;
int verbose = 0 ;
VlFileMeta frm = {0, "%.frame", VL_PROT_ASCII, "", 0} ;
VlFileMeta piv = {0, "%.mser", VL_PROT_ASCII, "", 0} ;
VlFileMeta met = {0, "%.meta", VL_PROT_ASCII, "", 0} ;
#define ERR(msg, arg) { \
err = VL_ERR_BAD_ARG ; \
snprintf(err_msg, sizeof(err_msg), msg, arg) ; \
break ; \
}
/* ------------------------------------------------------------------
* Parse options
* --------------------------------------------------------------- */
while (!err) {
int ch = getopt_long(argc, argv, opts, longopts, 0) ;
/* If there are no files passed as input, print the help and settings */
if (ch == -1 && argc - optind == 0)
ch = 'h';
/* end of option list? */
if (ch == -1) break;
/* process options */
switch (ch) {
/* .......................................................... */
case '?' :
ERR("Invalid option '%s'.", argv [optind - 1]) ;
break ;
case ':' :
ERR("Missing mandatory argument for option '%s'.",
argv [optind - 1]) ;
break ;
case 'h' :
printf (help_message, argv [0]) ;
printf ("MSERs filespec: `%s'\n", piv.pattern) ;
printf ("Frames filespec: `%s'\n", frm.pattern) ;
printf ("Meta filespec: `%s'\n", met.pattern) ;
printf ("Version: driver %s; libvl %s\n",
VL_XSTRINGIFY(VL_MSER_DRIVER_VERSION),
vl_get_version_string()) ;
exit (0) ;
break ;
case 'v' :
++ verbose ;
break ;
/* .......................................................... */
case 'd' :
n = sscanf (optarg, "%lf", &delta) ;
if (n == 0 || delta < 0)
ERR("The argument of '%s' must be a non-negative number.",
argv [optind - 1]) ;
break ;
/* ........................................................... */
case opt_max_area :
n = sscanf (optarg, "%lf", &max_area) ;
if (n == 0 || max_area < 0 || max_area > 1)
ERR("max-area argument must be in the [0,1] range.", NULL) ;
break ;
case opt_min_area :
n = sscanf (optarg, "%lf", &min_area) ;
if (n == 0 || min_area < 0 || min_area > 1)
ERR("min-area argument must be in the [0,1] range.", NULL) ;
break ;
case opt_max_variation :
n = sscanf (optarg, "%lf", &max_variation) ;
if (n == 0 || max_variation < 0)
ERR("max-variation argument must be non-negative.", NULL) ;
break ;
case opt_min_diversity :
n = sscanf (optarg, "%lf", &min_diversity) ;
if (n == 0 || min_diversity < 0 || min_diversity > 1)
ERR("min-diversity argument must be in the [0,1] rang.", NULL) ;
break ;
/* ........................................................... */
case opt_frame :
err = vl_file_meta_parse (&frm, optarg) ;
if (err)
ERR("The arguments of '%s' is invalid.", argv [optind - 1]) ;
break ;
case opt_seed :
err = vl_file_meta_parse (&piv, optarg) ;
if (err)
ERR("The arguments of '%s' is invalid.", argv [optind - 1]) ;
break ;
case opt_meta :
err = vl_file_meta_parse (&met, optarg) ;
if (err)
ERR("The arguments of '%s' is invalid.", argv [optind - 1]) ;
if (met.protocol != VL_PROT_ASCII)
ERR("meta file supports only ASCII protocol", NULL) ;
break ;
/* .......................................................... */
case 0 :
default :
assert (0) ;
break ;
}
}
/* check for parsing errors */
if (err) {
fprintf(stderr, "%s: error: %s (%d)\n",
argv [0],
err_msg, err) ;
exit (1) ;
}
/* parse other arguments (filenames) */
argc -= optind ;
argv += optind ;
/* make sure at least one file */
if (piv.active == 0 && frm.active == 0) {
frm.active = 1 ;
}
if (verbose > 1) {
printf("mser: frames output\n") ;
printf("mser: active %d\n", frm.active ) ;
printf("mser: pattern %s\n", frm.pattern) ;
printf("mser: protocol %s\n", vl_string_protocol_name (frm.protocol)) ;
printf("mser: seeds output\n") ;
printf("mser: active %d\n", piv.active ) ;
printf("mser: pattern %s\n", piv.pattern) ;
printf("mser: protocol %s\n", vl_string_protocol_name (piv.protocol)) ;
printf("mser: meta output\n") ;
printf("mser: active %d\n", met.active ) ;
printf("mser: pattern %s\n", met.pattern) ;
printf("mser: protocol %s\n", vl_string_protocol_name (met.protocol)) ;
}
/* ------------------------------------------------------------------
* Process one image per time
* --------------------------------------------------------------- */
while (argc--) {
char basename [1024] ;
char const *name = *argv++ ;
VlMserFilt *filt = 0 ;
vl_uint8 *data = 0 ;
VlPgmImage pim ;
vl_uint const *regions ;
float const *frames ;
enum {ndims = 2} ;
int dims [ndims] ;
int i, j, dof, nregions, nframes, q ;
FILE *in = 0 ;
/* Open files ------------------------------------------------ */
/* get basenmae from filename */
q = vl_string_basename (basename, sizeof(basename), name, 1) ;
err = (q >= sizeof(basename)) ;
if (err) {
snprintf(err_msg, sizeof(err_msg),
"Basename of '%s' is too long", name);
err = VL_ERR_OVERFLOW ;
goto done ;
}
if (verbose) {
printf("mser: processing '%s'\n", name) ;
}
if (verbose > 1) {
printf("mser: basename is '%s'\n", basename) ;
}
#define WERR(name) \
if (err == VL_ERR_OVERFLOW) { \
snprintf(err_msg, sizeof(err_msg), \
"Output file name too long.") ; \
goto done ; \
} else if (err) { \
snprintf(err_msg, sizeof(err_msg), \
"Could not open '%s' for writing.", name) ; \
goto done ; \
}
/* open input file */
in = fopen (name, "rb") ;
if (!in) {
err = VL_ERR_IO ;
snprintf(err_msg, sizeof(err_msg),
"Could not open '%s' for reading.", name) ;
goto done ;
}
/* open output files */
err = vl_file_meta_open (&piv, basename, "w") ; WERR(piv.name) ;
err = vl_file_meta_open (&frm, basename, "w") ; WERR(frm.name) ;
err = vl_file_meta_open (&met, basename, "w") ; WERR(met.name) ;
if (verbose > 1) {
if (piv.active) printf("mser: writing seeds to '%s'\n", piv.name);
if (frm.active) printf("mser: writing frames to '%s'\n", frm.name);
if (met.active) printf("mser: writing meta to '%s'\n", met.name);
}
/* Read image data -------------------------------------------- */
/* read source image header */
err = vl_pgm_extract_head (in, &pim) ;
if (err) {
err = VL_ERR_IO ;
snprintf(err_msg, sizeof(err_msg),
"PGM header corrputed.") ;
goto done ;
}
if (verbose) {
printf("mser: image is %d by %d pixels\n",
pim. width,
pim. height) ;
}
/* allocate buffer */
data = malloc(vl_pgm_get_npixels (&pim) *
vl_pgm_get_bpp (&pim)) ;
if (!data) {
err = VL_ERR_ALLOC ;
snprintf(err_msg, sizeof(err_msg),
"Could not allocate enough memory.") ;
goto done ;
}
/* read PGM */
err = vl_pgm_extract_data (in, &pim, data) ;
if (err) {
snprintf(err_msg, sizeof(err_msg),
"PGM body corrputed.") ;
goto done ;
}
/* Process data ---------------------------------------------- */
dims[0] = pim.width ;
dims[1] = pim.height ;
filt = vl_mser_new (ndims, dims) ;
if (!filt) {
snprintf(err_msg, sizeof(err_msg),
"Could not create an MSER filter.") ;
goto done ;
}
if (delta >= 0) vl_mser_set_delta (filt, (vl_mser_pix) delta) ;
if (max_area >= 0) vl_mser_set_max_area (filt, max_area) ;
if (min_area >= 0) vl_mser_set_min_area (filt, min_area) ;
if (max_variation >= 0) vl_mser_set_max_variation (filt, max_variation) ;
if (min_diversity >= 0) vl_mser_set_min_diversity (filt, min_diversity) ;
if (verbose) {
printf("mser: parameters:\n") ;
printf("mser: delta = %d\n", vl_mser_get_delta (filt)) ;
printf("mser: max_area = %g\n", vl_mser_get_max_area (filt)) ;
printf("mser: min_area = %g\n", vl_mser_get_min_area (filt)) ;
printf("mser: max_variation = %g\n", vl_mser_get_max_variation (filt)) ;
printf("mser: min_diversity = %g\n", vl_mser_get_min_diversity (filt)) ;
}
vl_mser_process (filt, (vl_mser_pix*) data) ;
/* Save result ----------------------------------------------- */
nregions = vl_mser_get_regions_num (filt) ;
regions = vl_mser_get_regions (filt) ;
if (piv.active) {
for (i = 0 ; i < nregions ; ++i) {
fprintf(piv.file, "%d ", regions [i]) ;
}
}
if (frm.active) {
vl_mser_ell_fit (filt) ;
nframes = vl_mser_get_ell_num (filt) ;
dof = vl_mser_get_ell_dof (filt) ;
frames = vl_mser_get_ell (filt) ;
for (i = 0 ; i < nframes ; ++i) {
for (j = 0 ; j < dof ; ++j) {
fprintf(frm.file, "%f ", *frames++) ;
}
fprintf(frm.file, "\n") ;
}
}
if (met.active) {
fprintf(met.file, "<mser\n") ;
fprintf(met.file, " input = '%s'\n", name) ;
if (piv.active) {
fprintf(met.file, " seeds = '%s'\n", piv.name) ;
}
if (frm.active) {
fprintf(met.file," frames = '%s'\n", frm.name) ;
}
fprintf(met.file, ">\n") ;
}
/* Next guy ----------------------------------------------- */
done :
/* release filter */
if (filt) {
vl_mser_delete (filt) ;
filt = 0 ;
}
/* release image data */
if (data) {
free (data) ;
data = 0 ;
}
/* close files */
if (in) {
fclose (in) ;
in = 0 ;
}
vl_file_meta_close (&frm) ;
vl_file_meta_close (&piv) ;
vl_file_meta_close (&met) ;
/* if bad print error message */
if (err) {
fprintf
(stderr,
"mser: err: %s (%d)\n",
err_msg,
err) ;
exit_code = 1 ;
}
}
/* quit */
return exit_code ;
}
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