ANSI/NIST Finger

Standard Updat

BC 2005

September 20, 2005

Michael McCabe 

mccabe@nist.gov

fingerprint.nist.gov/stand

www.itl.nist.gov/iad/vip
What is it?

S ANSI/NIST-ITL 1-2000 Standard Data Fo

Interchange of Fingerprint, Facial, & ScTattoo (SMT) Information

S Standard describing the Fingerprint Da

Format Used by Law Enforcement agen

O FBIO DHSO State & local Police Agencies

S De facto ISO Standard

O Canada, UK, GermanyO Eurodac, Interpol 

S Format similar to commercial M1 stand
Structure of Standa

S Sixteen record types - ASCII, binary, 

combination

S Used for exchanging information des

O Transaction itselfO Descriptive, demographic, and rap sh

information

O Finger and palm print image and min

information

O Facial imageO Scar mark and tattoo image and desc

information

O User defined type record.
History of ANSI/NIS

Fingerprint Standa

S ANSI/NBS-ICST 1-1986 MinutiaeS ANSI/NIST-CSL 1-1993 Image-B

gray levWSQ/15

S ANSI/NIST-ITL 1a-1997 Facial & S ANSI/NIST-ITL 1-2000 Tagged-

higher rpalms & 

S ANSI/NIST-ITL 1-200X

?
Revision of 1-2000 Stan

S Open workshop held April 26-28, 2005 S ANSI requirement for a 5-year review S Overview of major implementations S New initiatives from the FBI/CJIS S Talks on PIV and Quality indicators prS Review of current ANSI/NIST-ITL 1-20S Identify aspects of the standard for upS Introduce new features for possible in
ANSI/NIST - INCITS/

Comparison

S Both address finger image, finger mi

face data (M1 provision for Iris data)

S M1: encodes data using a format co

fixed binary fields - not easily expand

S ANSI/NIST: tagged fields containing 

and binary data - expandable format

S ANSI/NIST: vendor-specific minutiae S M1: Contains additional information 

finger image, minutiae, and face form

S M1: requires use of CBEFF 
ANSI/NIST - INCITS/

Harmonization

S WHY? Provide systems the optio

processing and converting informatiANSI/NIST and M1 data formats.

S Reserve an additional block of vendo

fields for M1-type fingerprint minutia

S Define finger and palm image fields t

image capture parameters, optional pidentification, and image quality info

S Define a new record type for iris imaS Define additional face information fie

contain visible facial features. 
CBEFF Consideratio

S CBEFF structure requires a header r

precede the data block

S Would change the structure of the A

format - not well received 

Alternatives

S For existing record types define five 

fields to satisfy the minimum requireCBEFF header record

S For biometric data types not address

ANSI/NIST define a new record type trequired ANSI/NIST and CBEFF infor
XML Representatio

S Four different approaches proposed

Favored Approach

S Develop a representation of the existS Map as closely as possible the existi

and numeric tags to XML tags

S Tag names to be descriptive of the e

content

S Use the language of the text of the cu

standard
XML Sample

S Create a tag name for the entire pack

<ITL_Identification_Transmission_Pa

S Create tag names for each logical rec

<Tenprint_Fingerprint_Impressions>

S Create tag names to replace all nume

(for 1.004) <TypeOfTransaction>

S Recommend Base64 Encoding for em

binary data.
Latent Fingerprint Iss

S Develop an approach to encode first- 

level details which may include:

O pores ridge edge shapO ridge widths dotsO ridge relationships ridge flow

S Require a minimum scanning resolut

ppi for the capture of latent images 

S Develop codes and descriptions for m

prints

S Update Finger Impression Type table 
Face Image Proposa

S Allow color JPEG 2000 for compress

improve image quality

S Add provision for quality score and a

identification information

S Define fields for 3D pose angle (yaw, S Include a facial image capture profile 

addresses compression limits, capturequirements, and other best practicor requirements.
Miscellaneous Issue

S Consider UTF-8 in place of 7-bit ASC

defined fields to simplify internationa

S Formally specify codes for WSQ, JPES Develop a GPS field for a mapping of S Develop a Submission Tracking Field 

traversing of vendors and jurisdictio

S Adjust length and width dimensions 

accommodate enlarged platen sizes images on newer live-scan devices
Conclusions of 1st Wor

S No authorized voting body establisheS Modification and new features were p

more definition of each item was nee

S A consensus of all present was that 

should be updated and revised

S Further refinement of updates and en

was needed before inclusion in the s

S Form 8 ad hoc groups to formalize uS Develop & circulate summary of the S A second workshop should be conve
Development of th

Revision to the Stand

S Schedule a 2nd workshop (December S Develop a Canvass List S Convene 2nd workshop (December 5S Present findings of each ad hoc grouS Vote on each proposal for inclusion iS Develop draft update: ANSI/NIST 1-20S Circulate for commentS Edit draftS Circulate for vote (30 day minimum)S Submit to ANSI if approved ; else upd
Standards Approv

Considerations

S Consensus on a proposed standard 

that includes representatives from maffected and interested parties; 

S Broad-based public review on draft sS Consideration and response to comm

voting members of the consensus bo

S Incorporation of approved changes i

standard; and 

S Right to appeal by any participant th

that due process principles were not respected during the standards deveaccordance with the ANSI-accredited 
More Information

Fingerprint.nist.gov/stan

O Current and future drafts of standO Presentations made & summary o

workshop (NISTIR 7242)

O Method used to develop revisionO How to participate and become a O Results of ad hoc groupsO Information and registration for 2n