File size: 4,934 Bytes
713b5ba | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | /* ---------------------------------------------------------------
FVC2000 match_samp: sample match_xxxx program
BioLab University of Bologna - Italy
--------------------------------------------------------------- */
#include <windows.h>
#include <math.h>
#include <stdio.h>
#include "../inc/fvc2000.h"
BYTE IMAGE[MAXIMAGESIZE];
int IMAGE_X,IMAGE_Y;
int Load_gray256tif(FILE* fp, BOOL Upright);
int main(int argc, char * argv[])
{
char imagefile[MAXPATH], templatefile[MAXPATH], configfile[MAXPATH], outputfile[MAXPATH];
FILE *co,*im,*te,*ou;
int err,i;
BOOL Upright,MatchingPerformed;
float similarity;
float mean_model,mean;
// Load parameters
if (argc!=5)
{ printf("\nSyntax error.\nUse: match_samp <imagefile> <templatefile> <configfile> <outputfile>\n");
return SYNTAX_ERROR;
}
strcpy(imagefile,argv[1]);
strcpy(templatefile,argv[2]);
strcpy(configfile,argv[3]);
strcpy(outputfile,argv[4]);
/* configfile Load and Setup */
co = fopen(configfile,"rt");
if (!co) return CANNOT_OPEN_CONFIG_FILE;
fclose(co);
/* Load a tif imagefile.
The image is loaded by rows into the global array IMAGE:
- IMAGE_X and IMAGE_Y are the width and the height of the image respectively.
- The generic pixel [x,y], where x=0..IMAGE_X-1 and y=0..IMAGE_Y-1,
can be accessed as IMAGE[y*IMAGE_X+x]
*/
im=fopen(imagefile,"rb");
if (im==NULL) return CANNOT_OPEN_IMAGE_FILE;
Upright=TRUE;
// Upright=TRUE requires the image to be loaded Upright: IMAGE[0] denotes the "top-left" pixel
// Upright=FALSE requires the image to be loaded Upsidedown: IMAGE[0] denotes the "bottom-left" pixel
err=Load_gray256tif(im,Upright);
fclose(im);
if (err) return TIF_LOAD_ERROR;
/* Load fingerprint template file */
te = fopen(templatefile,"rb");
if (!te) return CANNOT_OPEN_TEMPLATE_FILE;
fread(&mean_model,4,1,te);
fclose(te);
/* Matching */
mean = 0;
for (i=0;i<IMAGE_X*IMAGE_Y;i++)
mean += IMAGE[i];
mean/= (IMAGE_X*IMAGE_Y);
similarity = 1.0F - (float)(fabs(mean-mean_model) / 255);
MatchingPerformed=TRUE;
//MatchingPerformed=FALSE;
/* Send the results to outputfile */
ou=fopen(outputfile,"at");
if (ou==NULL) return CANNOT_OPEN_OUTPUT_FILE;
if (fprintf(ou,"%s %s %s %8.6f\n",imagefile,templatefile,MatchingPerformed?"OK":"FAIL",MatchingPerformed?similarity:0.0F)<=0)
return CANNOT_UPDATE_OUTPUT_FILE;
fclose(ou);
return SUCCESS;
}
/* ----------------------- */
/* Auxiliary routines
/* ----------------------- */
BYTE buffer[512];
DWORD in_dword(DWORD i)
{ DWORD v=0;
v=v|(buffer[i]);
v=v|(buffer[i+1]<<8);
v=v|(buffer[i+2]<<16);
v=v|(buffer[i+3]<<24);
return v;
}
WORD in_word(DWORD i)
{ WORD v=0;
v=v|(buffer[i]);
v=v|(buffer[i+1]<<8);
return v;
}
// Load a 256 gray-scale uncompressed TIF image into the global array IMAGE
int Load_gray256tif(FILE* fp, BOOL Upright)
{ DWORD ifd_offset;
WORD directory_entry_count;
WORD offset;
DWORD strip_offset,data_offset;
BOOL strip_based=FALSE;
BYTE* pimage;
int i;
if (fread(buffer,8,1,fp)!=1) return 1;
if (in_word(0)!=0x4949) return 2;
if (in_word(2)!=0x002a) return 3;
ifd_offset=in_dword(4);
if (fseek(fp,ifd_offset,SEEK_SET)) return 1;
if (fread(buffer,2,1,fp)!=1) return 1;
directory_entry_count=in_word(0);
if (fread(buffer,directory_entry_count*12,1,fp)!=1) return 1;
offset=0;
while (directory_entry_count >0)
{ switch (in_word(offset))
{ case 0x00fe: if (in_word(offset+8)!=0) return 4; break;
case 0x0100: IMAGE_X = in_word(offset+8); break;
case 0x0101: IMAGE_Y = in_word(offset+8); break;
case 0x0102: if (in_word(offset+8)!=8) return 5; break;
case 0x0103: if (in_word(offset+8)!=1) return 6; break;
case 0x0106: if (in_word(offset+8)!=1) return 7; break;
case 0x0111: strip_offset = in_word(offset+8); break;
case 0x0115: if (in_word(offset+8)!=1) return 8; break;
case 0x0116: if (in_word(offset+8)!= IMAGE_Y) strip_based=TRUE; break;
case 0x011c: if (in_word(offset+8)!=1) return 11; break;
}
offset+=12;
directory_entry_count-=1;
}
if (strip_based)
{ if (fseek(fp,strip_offset,SEEK_SET)) return 1;
if (fread(buffer,4,1,fp)!=1) return 1;
data_offset = in_dword(0);
}
else data_offset=strip_offset;
if (fseek(fp,data_offset,SEEK_SET)) return 1;
if (Upright)
{ pimage=IMAGE;
for (i=0;i<IMAGE_Y;i++)
{ if (fread(pimage,IMAGE_X,1,fp)!=1) return 1;
pimage+=IMAGE_X;
}
}
else
{ pimage=IMAGE+IMAGE_X*(IMAGE_Y-1);
for (i=0;i<IMAGE_Y;i++)
{ if (fread(pimage,IMAGE_X,1,fp)!=1) return 1;
pimage-=IMAGE_X;
}
}
return 0;
}
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