KS X ISO IEC 19794-3-2008 Information technology－Biometric data interchange formats－Part 3：Finger pattern spectral data《信息技术 生物测量数据交换格式 第3部分 指纹图像光谱数据》.pdf

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2、kats.go.kr). 10 5 , . KS X ISO/IEC 19794 3:2008 i 1 1 2 1 3 .1 4 .1 5 .4 6 .5 6.1 .5 6.2 5 6.3 .6 6.4 6 6.5 6 6.6 .6 7 .6 7.1 .6 7.2 0) 6 7.3 1) .6 7.4 2) .7 7.5 .13 8 .14 8.1 14 8.2 .19 9 .31 A( ) 3 .33 A.1 1.33 A.2 2.34 A.3 35 B( ) 37 B.1 1.37 B.2 2.38 C( ) 40 KS X ISO/IEC 19794 3:2008 ii e- . KS

3、X ISO/IEC 19794 3 . A( ) 3 B( ) C( ) KS X ISO/IEC 19794 “ ” . 1 : 2 : (KS X ISO/IEC 19794 2) 4 : (KS X ISO/IEC 19794 4) 5 : (KS X ISO/IEC 19794 5) 6 : (KS X ISO/IEC 19794 6) 8 : (KS X ISO/IEC 19794 8) 9 : (KS X ISO/IEC 19794 9) . 7 : 10 : 11 : KS X ISO/IEC 19794 3:2008 iii 2006 1 ISO/IEC 19794 3, In

4、formation technology Biometric data interchange formats Part 3： Finger pattern spectral data . , . . . ( ) , , ( ) . , . . . , , ( ) “ ” . , . , . , , . , . . 3 . . . Bioscrypt Inc. 505 Cochrane Drive Markham, Ontario, Canada L3R 8E3 KS X ISO IEC 19794 3:2008 3： Information technology Biometric data

5、 interchange formats Part 3： Finger pattern spectral data 1 . 2 7. , 8. . 3 . . ( ) . KS X ISO/IEC 7816 11, ID IC 11： KS X ISO/IEC 19784 1, 1： BioAPI KS X ISO/IEC 19785 1, 1： ANSI/NIST ITL 1： 2000, Standard Data Format for the Interchange of Fingerprint, Facial, & Scar mark & Tattoo(SMT) Information

6、 ANSI/IEEE Std 754 1985, IEEE Standard for Binary Floating-Point Arithmetic 4 . 4.1 (biometric data) , , , , , . KS X ISO/IEC 19794 3:2008 2 4.2 (biometric feature) , 1 . 2 . 4.3 (biometric sample) 4.4 (acquired biometric sample) 1 , 2 . 4.5 (intermediate biometric sample) , . , , . , . 4.6 (biometr

7、ic system) . . . . (identification) (verification) . 4.7 (bit-depth) 4.8 (cell) (multi-scale cells) . KS X ISO/IEC 19794 3:2008 3 4.9 (cell structure) , , , , . . 4.10 (cell quality group) 4.11 (comparison) , 4.12 (core) 4.13 (crop) 4.14 (delta) . 4.15 (dimension) 4.16 (down-sample) (re-sampling) (a

8、liasing) . 4.17 (enrollment) 4.18 (finger pattern) , (cropping) (down-sampling) , . KS X ISO/IEC 19794 3:2008 4 4.19 (finger pattern spectral data) 4.20 (minimal spatial wavelength) , (Nyquist) . . . . 4.21 (pad) ( 0 ) . 4.22 (re-sampling) . 4.23 (resolution) , (cm) . 1 pixel per cm(ppcm)2.54 pixels

9、 per inch(ppi) 4.24 (typeline) , 5 . 2D 2 CBEFF DFT (Discrete Fourier Transform) ppcm ppi . a, b, c,., S, T , , , ,., , a, b) a( ) b( ) a, b a( ) b( ) a a KS X ISO/IEC 19794 3:2008 5 a a ROUND(a) a . a , ROUND(a) a . a(b, c) a b c . |a(b, c)| b c DFT a(b, c) b c DFT 6 6.1 , 1byte byte . Big-Endian .

10、 , . (most significant byte) , (least significant byte) . , . , . ANSI/IEEE Std 754-1985 , 4 (32 ) . 6.2 . x y . , x , y . . (0,0) . , 1 x . x y . , . 8.1.5 x( ) , 8.1.6 y( ) , x , y . 1 KS X ISO/IEC 19794 3:2008 6 6.3 8 256 . 0 , 255 . “ ” 0 , “ ” 255 . 6.4 , . . 6.5 0,360) , . 0 x , x . . 6.6 (deg

11、ree) . 7 7.1 , . 1) , (cropping) ： 2) (cellular partitioning)： 0) ST . 3) (spectral component selection) : 7.2 0) . ( , ) . . , . 7.3 1) , , . . ( 2 x y ). , . KS X ISO/IEC 19794 3:2008 7 2 , 7.4 . 7.4 2) . , , (Gabor filtering) 3 . 7.4.1 3 2D . Cell(,)(s, t)=cos(PD2f ), PD scos() tsin(), f 1/, s, t

12、 x y . 2D , , , , . 3 . 3 . ： 0,180) . , . x , 0 . . ： ( , . 2 . f 0, ) , 1/f. (Nyquist) , 2 . KS X ISO/IEC 19794 3:2008 8 ： 0,360) . d x , (d/)360 . 3 . 3 , . , , l, m, n . , , . 1 l 2 m KS X ISO/IEC 19794 3:2008 9 3 n 2l+m+n 3 2l+m+n . 3 . 1) -1, 1 . 2) ( ). 3) . 4) 3 . , ST , . 4 A B , D |A1,1 B1

13、,1| |A1,2 B1,2| |AS,T BS,T| 4 ST ( , ) . , 3 3 . 3 . KS X ISO/IEC 19794 3:2008 10 1) 3 . 2) 3 . 3) 3 . 3 1, 2 , . , 3 3 . 3 , 2 . 3 2 . 7.4.2 2 . 2D DFT , ST h(s,t) . +=TltsksjSsTtetslk21010),(h),(H k 0,.,S 1 l 0,.,T 1 h(s,t) , H(k,l) . h(s,t) 2D DFT H(k,l) . +=TltsksjSkTlelkSTts21010),(H1),(h s 0,.

14、,S 1 t 0,.,T 1 x y fx fy . , NQx (x )/2 , NQy (y )/2 , x y NQx NQy . ( )NQ,NQyyxxTlfskf = (k 0,.S 1 l 0,., T 1 ) 2D DFT , k,l |H(k,l)| , k,l H(k,l) . ： 0,255ST), 255 ： 0,360) 4, 5 p q . KS X ISO/IEC 19794 3:2008 11 4 p 5 q 2D DFT (Hermitian) . , H(k,l) H(S k, T l) . 2D DFT H(k,l) . ST 2D DFT . TS+12

15、1S , TS+12S , S ( , S +121SKS X ISO/IEC 19794 3:2008 12 ) DFT +12S . , . , , . 2D DFT . 500 dpi , 1418 . . ( 2 ), DFT . , , . 2 DFT (ringing) , . 2 . DFT . 7.4.3 2D . 2D . )(22),(1122121),(tsfjtsfeetsG+= s1 s cos t sin t1 s sin t cos . f , x . (x,y) . x y , . ST h(s,t) . h(s,t) . =1010),(),(h),(),(SxTyftsytxsGtsZ s,t=|Z(s,t)| , s,t Z(s,t) .