| 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 | /*********************************************************************** | ||
| 46 | LIBRARY: LFS - NIST Latent Fingerprint System | ||
| 47 | |||
| 48 | FILE: XYTREPS.C | ||
| 49 | AUTHOR: Michael D. Garris | ||
| 50 | DATE: 09/16/2004 | ||
| 51 | UPDATED: 01/11/2012 | ||
| 52 | |||
| 53 | Contains routines useful in converting minutiae in LFS "native" | ||
| 54 | representation into other representations, such as | ||
| 55 | M1 (ANSI INCITS 378-2004) & NIST internal representations. | ||
| 56 | |||
| 57 | *********************************************************************** | ||
| 58 | ROUTINES: | ||
| 59 | lfs2nist_minutia_XTY() | ||
| 60 | lfs2m1_minutia_XTY() | ||
| 61 | lfs2nist_format() | ||
| 62 | |||
| 63 | ***********************************************************************/ | ||
| 64 | |||
| 65 | #include <lfs.h> | ||
| 66 | #include <defs.h> | ||
| 67 | |||
| 68 | /************************************************************************* | ||
| 69 | ************************************************************************** | ||
| 70 | #cat: lfs2nist_minutia_XYT - Converts XYT minutiae attributes in LFS native | ||
| 71 | #cat: representation to NIST internal representation | ||
| 72 | |||
| 73 | Input: | ||
| 74 | minutia - LFS minutia structure containing attributes to be converted | ||
| 75 | Output: | ||
| 76 | ox - NIST internal based x-pixel coordinate | ||
| 77 | oy - NIST internal based y-pixel coordinate | ||
| 78 | ot - NIST internal based minutia direction/orientation | ||
| 79 | **************************************************************************/ | ||
| 80 | 2923 | void lfs2nist_minutia_XYT(int *ox, int *oy, int *ot, | |
| 81 | const MINUTIA *minutia, const int iw, const int ih) | ||
| 82 | { | ||
| 83 | 2923 | int x, y, t; | |
| 84 | 2923 | float degrees_per_unit; | |
| 85 | |||
| 86 | /* XYT's according to NIST internal rep: */ | ||
| 87 | /* 1. pixel coordinates with origin bottom-left */ | ||
| 88 | /* 2. orientation in degrees on range [0..360] */ | ||
| 89 | /* with 0 pointing east and increasing counter */ | ||
| 90 | /* clockwise (same as M1) */ | ||
| 91 | /* 3. direction pointing out and away from the */ | ||
| 92 | /* ridge ending or bifurcation valley */ | ||
| 93 | /* (opposite direction from M1) */ | ||
| 94 | |||
| 95 | 2923 | x = minutia->x; | |
| 96 | 2923 | y = ih - minutia->y; | |
| 97 | |||
| 98 | 2923 | degrees_per_unit = 180 / (float)NUM_DIRECTIONS; | |
| 99 | |||
| 100 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2923 times.
|
2923 | t = (270 - sround(minutia->direction * degrees_per_unit)) % 360; |
| 101 |
2/2✓ Branch 0 taken 678 times.
✓ Branch 1 taken 2245 times.
|
2923 | if(t < 0){ |
| 102 | 678 | t += 360; | |
| 103 | } | ||
| 104 | |||
| 105 | 2923 | *ox = x; | |
| 106 | 2923 | *oy = y; | |
| 107 | 2923 | *ot = t; | |
| 108 | 2923 | } | |
| 109 | |||
| 110 | /************************************************************************* | ||
| 111 | ************************************************************************** | ||
| 112 | #cat: lfs2m1_minutia_XYT - Converts XYT minutiae attributes in LFS native | ||
| 113 | #cat: representation to M1 (ANSI INCITS 378-2004) representation | ||
| 114 | |||
| 115 | Input: | ||
| 116 | minutia - LFS minutia structure containing attributes to be converted | ||
| 117 | Output: | ||
| 118 | ox - M1 based x-pixel coordinate | ||
| 119 | oy - M1 based y-pixel coordinate | ||
| 120 | ot - M1 based minutia direction/orientation | ||
| 121 | **************************************************************************/ | ||
| 122 | |||
| 123 | /************************************************************************* | ||
| 124 | ************************************************************************** | ||
| 125 | #cat: lfs2nist_format - Takes a minutiae data structure and converts | ||
| 126 | #cat: the XYT minutiae attributes in LFS native | ||
| 127 | #cat: representation to NIST internal representation | ||
| 128 | Input: | ||
| 129 | iminutiae - minutiae data structure | ||
| 130 | iw - width (in pixels) of the grayscale image | ||
| 131 | ih - height (in pixels) of the grayscale image | ||
| 132 | Output: | ||
| 133 | iminutiae - overwrite each minutia element in the minutiae data | ||
| 134 | sturcture convernt to nist internal minutiae format | ||
| 135 | **************************************************************************/ | ||
| 136 | |||
| 137 |