| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /******************************************************************************* | ||
| 2 | |||
| 3 | License: | ||
| 4 | This software and/or related materials was developed at the National Institute | ||
| 5 | of Standards and Technology (NIST) by employees of the Federal Government | ||
| 6 | in the course of their official duties. Pursuant to title 17 Section 105 | ||
| 7 | of the United States Code, this software is not subject to copyright | ||
| 8 | protection and is in the public domain. | ||
| 9 | |||
| 10 | This software and/or related materials have been determined to be not subject | ||
| 11 | to the EAR (see Part 734.3 of the EAR for exact details) because it is | ||
| 12 | a publicly available technology and software, and is freely distributed | ||
| 13 | to any interested party with no licensing requirements. Therefore, it is | ||
| 14 | permissible to distribute this software as a free download from the internet. | ||
| 15 | |||
| 16 | Disclaimer: | ||
| 17 | This software and/or related materials was developed to promote biometric | ||
| 18 | standards and biometric technology testing for the Federal Government | ||
| 19 | in accordance with the USA PATRIOT Act and the Enhanced Border Security | ||
| 20 | and Visa Entry Reform Act. Specific hardware and software products identified | ||
| 21 | in this software were used in order to perform the software development. | ||
| 22 | In no case does such identification imply recommendation or endorsement | ||
| 23 | by the National Institute of Standards and Technology, nor does it imply that | ||
| 24 | the products and equipment identified are necessarily the best available | ||
| 25 | for the purpose. | ||
| 26 | |||
| 27 | This software and/or related materials are provided "AS-IS" without warranty | ||
| 28 | of any kind including NO WARRANTY OF PERFORMANCE, MERCHANTABILITY, | ||
| 29 | NO WARRANTY OF NON-INFRINGEMENT OF ANY 3RD PARTY INTELLECTUAL PROPERTY | ||
| 30 | or FITNESS FOR A PARTICULAR PURPOSE or for any purpose whatsoever, for the | ||
| 31 | licensed product, however used. In no event shall NIST be liable for any | ||
| 32 | damages and/or costs, including but not limited to incidental or consequential | ||
| 33 | damages of any kind, including economic damage or injury to property and lost | ||
| 34 | profits, regardless of whether NIST shall be advised, have reason to know, | ||
| 35 | or in fact shall know of the possibility. | ||
| 36 | |||
| 37 | By using this software, you agree to bear all risk relating to quality, | ||
| 38 | use and performance of the software and/or related materials. You agree | ||
| 39 | to hold the Government harmless from any claim arising from your use | ||
| 40 | of the software. | ||
| 41 | |||
| 42 | *******************************************************************************/ | ||
| 43 | |||
| 44 | /*********************************************************************** | ||
| 45 | LIBRARY: FING - NIST Fingerprint Systems Utilities | ||
| 46 | |||
| 47 | FILE: BZ_DRVRS.C | ||
| 48 | ALGORITHM: Allan S. Bozorth (FBI) | ||
| 49 | MODIFICATIONS: Michael D. Garris (NIST) | ||
| 50 | Stan Janet (NIST) | ||
| 51 | DATE: 09/21/2004 | ||
| 52 | |||
| 53 | Contains driver routines responsible for kicking off matches | ||
| 54 | using the Bozorth3 fingerprint matching algorithm. | ||
| 55 | |||
| 56 | *********************************************************************** | ||
| 57 | |||
| 58 | ROUTINES: | ||
| 59 | #cat: bozorth_probe_init - creates the pairwise minutia comparison | ||
| 60 | #cat: table for the probe fingerprint | ||
| 61 | #cat: bozorth_gallery_init - creates the pairwise minutia comparison | ||
| 62 | #cat: table for the gallery fingerprint | ||
| 63 | #cat: bozorth_to_gallery - supports the matching scenario where the | ||
| 64 | #cat: same probe fingerprint is matches repeatedly | ||
| 65 | #cat: to multiple gallery fingerprints as in | ||
| 66 | #cat: identification mode | ||
| 67 | #cat: bozorth_main - supports the matching scenario where a | ||
| 68 | #cat: single probe fingerprint is to be matched | ||
| 69 | #cat: to a single gallery fingerprint as in | ||
| 70 | #cat: verificaiton mode | ||
| 71 | |||
| 72 | ***********************************************************************/ | ||
| 73 | |||
| 74 | #include <stdio.h> | ||
| 75 | #include <stdlib.h> | ||
| 76 | #include <string.h> | ||
| 77 | #include <bozorth.h> | ||
| 78 | |||
| 79 | /**************************************************************************/ | ||
| 80 | |||
| 81 | 9 | int bozorth_probe_init( struct xyt_struct * pstruct ) | |
| 82 | { | ||
| 83 | 9 | int sim; /* number of pointwise comparisons for Subject's record*/ | |
| 84 | 9 | int msim; /* Pruned length of Subject's comparison pointer list */ | |
| 85 | |||
| 86 | |||
| 87 | |||
| 88 | /* Take Subject's points and compute pointwise comparison statistics table and sorted row-pointer list. */ | ||
| 89 | /* This builds a "Web" of relative edge statistics between points. */ | ||
| 90 | 9 | bz_comp( | |
| 91 | pstruct->nrows, | ||
| 92 | 9 | pstruct->xcol, | |
| 93 | 9 | pstruct->ycol, | |
| 94 | 9 | pstruct->thetacol, | |
| 95 | &sim, | ||
| 96 | scols, | ||
| 97 | scolpt ); | ||
| 98 | |||
| 99 | 9 | msim = sim; /* Init search to end of Subject's pointwise comparison table (last edge in Web) */ | |
| 100 | |||
| 101 | |||
| 102 | |||
| 103 | 9 | bz_find( &msim, scolpt ); | |
| 104 | |||
| 105 | |||
| 106 | |||
| 107 |
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9 | if ( msim < FDD ) /* Makes sure there are a reasonable number of edges (at least 500, if possible) to analyze in the Web */ |
| 108 | ✗ | msim = ( sim > FDD ) ? FDD : sim; | |
| 109 | |||
| 110 | |||
| 111 | |||
| 112 | |||
| 113 | |||
| 114 | 9 | return msim; | |
| 115 | } | ||
| 116 | |||
| 117 | /**************************************************************************/ | ||
| 118 | |||
| 119 | 26 | int bozorth_gallery_init( struct xyt_struct * gstruct ) | |
| 120 | { | ||
| 121 | 26 | int fim; /* number of pointwise comparisons for On-File record*/ | |
| 122 | 26 | int mfim; /* Pruned length of On-File Record's pointer list */ | |
| 123 | |||
| 124 | |||
| 125 | /* Take On-File Record's points and compute pointwise comparison statistics table and sorted row-pointer list. */ | ||
| 126 | /* This builds a "Web" of relative edge statistics between points. */ | ||
| 127 | 26 | bz_comp( | |
| 128 | gstruct->nrows, | ||
| 129 | 26 | gstruct->xcol, | |
| 130 | 26 | gstruct->ycol, | |
| 131 | 26 | gstruct->thetacol, | |
| 132 | &fim, | ||
| 133 | fcols, | ||
| 134 | fcolpt ); | ||
| 135 | |||
| 136 | 26 | mfim = fim; /* Init search to end of On-File Record's pointwise comparison table (last edge in Web) */ | |
| 137 | |||
| 138 | |||
| 139 | |||
| 140 | 26 | bz_find( &mfim, fcolpt ); | |
| 141 | |||
| 142 | |||
| 143 | |||
| 144 |
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26 | if ( mfim < FDD ) /* Makes sure there are a reasonable number of edges (at least 500, if possible) to analyze in the Web */ |
| 145 | ✗ | mfim = ( fim > FDD ) ? FDD : fim; | |
| 146 | |||
| 147 | |||
| 148 | |||
| 149 | |||
| 150 | |||
| 151 | 26 | return mfim; | |
| 152 | } | ||
| 153 | |||
| 154 | /**************************************************************************/ | ||
| 155 | |||
| 156 | 26 | int bozorth_to_gallery( | |
| 157 | int probe_len, | ||
| 158 | struct xyt_struct * pstruct, | ||
| 159 | struct xyt_struct * gstruct | ||
| 160 | ) | ||
| 161 | { | ||
| 162 | 26 | int np; | |
| 163 | 26 | int gallery_len; | |
| 164 | |||
| 165 | 26 | gallery_len = bozorth_gallery_init( gstruct ); | |
| 166 | 26 | np = bz_match( probe_len, gallery_len ); | |
| 167 | 26 | return bz_match_score( np, pstruct, gstruct ); | |
| 168 | } | ||
| 169 | |||
| 170 | /**************************************************************************/ | ||
| 171 | |||
| 172 |