Enhancement to Existing 

December 5, 2005

Rob Mungovan Dale HapemPaul Griffin Tom Hopper Bill Long Mike McCab

fingerprint.nist.gov/stan
Compression Method

Codes, & Uses

METHOD BIN

CODE

ASCII 

CODE

Binary FP& Sign (UNC)

0

-

-

- Image Pa

Types: 5

Binary FP& Sign (CMP)

1 --- ANSI/EIA

>Lossles

Gray & ColorImg (CMP)

--- JPEGL Lossless 

Types: 1

Gray & ColorImg (UNC)

0

NONE

Types: 3 Types: 1
Compression Method

Codes, & Uses(cont

METHOD BIN ASCII NOTES*Gray Finger/PalmPrints (CMP)

1

WSQ20

Lossy *** Types: 1

Gray & ColorImages (CMP)

2

JPEGB

Lossy JPTypes: 1Types: 1

Gray & ColorImages (CMP)

--- JP2 Lossy JP

Types 10

Gray & ColorImages (UNC)

--- JP2L Lossless 

Types 10
Finger Minutiae 

Harmonization with 

Purpose: Facilitate the conversion of 

information between applications usin

Optional use of M1 block of fields (venMinutiae placement to be in agreemen

INCITS 378-2004 – tighter position tha

Cartesian coordinate system usedOrigin at upper left corner of imageMinutiae position expressed in pixels Angle reported in 2 degree incrementsAngle differs by 180 degrees from AN
Block of Minutiae Fiel

Required for M1 Harmoni

 Fields 9.001-9.004 required (Format = “ Field 9.121 - CBEFF Information

z Format Owner Assigned by IBIA “27z Format Type “513” (0x0201) minutiaz Owner of encoding equipment 

 Field 9.122 – Capture Equipment ID / A

Compliance

 Field 9.123 – Size of scanned image (x  Field 9.124 – Scan resolution (x and y) Field 9.125 – Finger View (“0” through “
Block of Minutiae Fiel

(cont)

 Field 9.126 – Finger Position  Field 9.127 – Finger Quality (“0” throug Field 9.128 – Number of minutia Field 9.129 – Finger minutiae data

z X Coordinatez Y Coordinatez Theta (0-179)z Minutiae Type (Other, ending, bifurcz Minutiae Quality (1 to 100)

 Multiple occurrences separated by <RS
Finger Image 

Harmonization with 

CBEFF requirements addressed late Field 14.123 – Size of scanned image ( Field 14.124 – Scan resolution (x and y Field 14.125 – Finger View (“0” through 
Fingerprint Image 

Quality Score

 Fingerprint matcher performance is dire

by the quality of images used

 Poor quality fingerprint images cause th

identification performance to be reduced

 Knowledge of fingerprint quality prior to 

be used to improve matcher performanc

 Require recapture of samples with insuf Poor quality samples can be processed 

different algorithms or thresholds
Image Quality Metr

Field 14.022

Mandatory ASCII field defined by the F Consists of two information items sep

<US> separator character

z Finger numberz Predictive quality score

Subfield repeats for individual fingers o

separated by the <RS> character

14.022:10US

5RS

9US

4RS

8US

3RS

7US

2GS
Image Quality Scor

Field 14.024

Field similar to EFTS 7.1 Field 14.02Field consists of five information item

z Finger numberz Predictive quality score (-1 to 100)z Vendor identification (ASCII)z Vendor assigned code for algorithmz Version and revision of algorithm

Provision for additional quality score14.024:2US100USNISTUS64530US001

2US80USABCDUS5432US02
Image Quality Scor

Slap Example

Provision for segmented slap image 

algorithms

14.024:2US100USNISTUS64530US001.12

3US100US NISTUS64530US001.1

4US80USNISTUS64530US001.123

5US60USNISTUS65430US001.1232US090USABCDUS5432US02.0043US80USABCDUS5432US02.004R..................................
Segment & Assign N

(X

L

Y

T)

(X

R

Y

B)

NFIQ=2

Finger 9
Finger Segment Posi

Field 14.021

 Purpose: Defines offsets to the locations o

boxes of the individual fingers within the p

 Offsets are relative to the origin, (0,0), whi

upper left corner of the image. 

 A finger segment is defined by five informa

z Finger numberz X coordinates (LEFT, RIGHT) and z Y coordinates (TOP, BOTTOM), of its bz Information items separated by <US> cz Subfields for fingers separated by <RS
Segmented Finger Qu

Field 14.023 

Indication of the quality of the segme

process

Used with Field 14.021Field consists of five information item

z Finger numberz Predictive quality score (-1 to 100)z Vendor identification (ASCII)z Vendor assigned code for algorithmz Version and revision of algorithm

Provision for additional segmentatio
Segmented Finger Exa

Fields 14.021 & 14.0

14.021:10US

3US352US725US1265RS

9US375US750US175US765RS8US800US1150US

5US581RS

7US1200US1598US274US801GS

14.023:10US80USNISTUS6430US001.123

9US80US NISTUS6430US001.123

8US80USNISTUS6430US001.123R

7US100USNISTUS6530US001.123
Table Updates

Table 6 – Finger position code & ma

z Image area column removed in favo

dimensions

z Maximum size for the plain right and 

fingers increased

z Additional code 15 for the combinati

left thumbs

Table 19 – Additional Entries
Finger Position Cod

Maximum Size - Tab

Width 

(mm) (in) 

Unknown

0 40.6 1.6 

Right thumb

1 40.6 1.6 

Right index finger

2 40.6 1.6 

Right middle finger

3 40.6 1.6 

Right ring finger

4 40.6 1.6 

Right little finger

5 40.6 1.6 

Left thumb

6 40.6 1.6 

Left index finger

7 40.6 1.6 

Left middle finger

8 40.6 1.6 

Finger Position Finger 

Code
Table 6

(cont)

Width 

(mm) (in) 

Left ring finger 9 40.6 1.6 

Left little finger 10 40.6 1.6 Plain right thumb 11 25.4 1.0 

Plain left thumb 12 25.4 1.0 

Plain right four fingers

13 81.3 3.2 

Plain left four fingers 14 81.3 3.2 Left and Right thumbs

15 81.3 3.2 

Finger Position Finger 

Code
ADDITIONAL PALM CO

(Table 19)

Palm Position Palm 

Code

Width 

(in)

Right Interdigital 31 5.5 

Right Thenar 32 3.0 

Right Hyperthenar 33 3.0 

Left Interdigital 34 5.5 

Left Thenar 35 3.0 

Left Hyperthenar 36 3.0 
SOURCE AGENCY FIEL

Interpol requirements:10.003:CC/agency{G

S} where 

CC is 2 alpha-numeric charactersAgency is up to 32 characters

Proposal: Increase size of source 

/ORI to a maximum of 43 characterecords Types 10 and above

Field 1.007 (DAI) & 1.008 (ORI) use
Attended Operatio

Fields 10.030, 14.030 - 1

Records if the capture of fingerprints

facial image, and iris was in an attenunattended mode.

This field consists of two information 

separated by the <US> character. 

First item contains “Unattended” if th

in an unattended kiosk environment “Attended” if an operator is in attend

Second item contains “NA” if unatten

operator identification if in an attend
IRIS Proposal
Iris Logical Record

Add Type-17 Iris Record

z Can exchange data contained in 

(INCITS 379-2004) Iris Image InteFormat

–Rectilinear and Polar

z Can exchange iris image data usi

Type-16 like format with addition 

–Identity of which eye–Make/Model/Serial Number