Biometric Data Specification

Introduction

Biometrics images for various modalities are represented and exchanged as per the below specifications.

Image formats

Fingerprint Capture

Refer ISO 19794-4:2011

Factor

Registration Devices

Authentication Devices

Minimum Resolution

> 500 native DPI. Bare minimum recommended. Higher densities are preferred

> 500 native DPI. Bare minimum recommended. Higher densities are preferred

FRR**

< 2% FRR in respective country

< 2% FRR in respective country

FAR**

0.01%

0.01%

DPI

500*

500

Image Specification

ISO 19794-4 B.1 AFIS Normative

ISO 19794-4 B.2 Personal Verification

ESD

>= 8kv

>= 8kv

EMC compliance

FCC class A or equivalent

FCC class A or equivalent

Operating Temperature**

0 - 50 C

-30 -to 50 C

Liveness detection***

As per IEEE 2790

As per IEEE 2790

Preview

> 3 FPS JPEG lossless frames with NFIQ 2 score superimposed

None

Image Format

JPEG 2000 lossless

JPEG 2000 lossless, WSQ (Compression upto 10:1)**

Quality Score

NFIQ 2

NFIQ 1

FTM

SBI 1.0 - Use host based security, SBI 2.0 - FTM supported security

SBI 2.0 - FTM supported security

  • * Sufficiency to be validated for registration.

  • ** MOSIP adopters can change this if needed.

  • *** MOSIP adopters to decide on the availability of this feature

IRIS Capture

Refer ISO 19796-6:2011 Part 6 Specifications.

Factor

Registration Devices

Authentication Devices

Rotation angle

Before compression, the Iris image will have to be preprocessed to calculate rotation angle. Refer section 6.3.1 of ISO 19794-6 for rotation angle calculation for rectilinear images.

Rotation Uncertainty

Refer ISO 19794-6

Minimum Diameter

As per ISO 19794-6:2011 medium and higher quality images are only acceptable,. Hence for this Standard, minimum acceptable Iris diameter will be 150 pixels

Same

Margin

Same as ISO

Color

The iris images shall be captured and stored in gray scale with pixel depth of 8 bits/pixel

Illumination

The eye should be illuminated using infrared or any other source that could produce high quality gray scale image

Image Format

JPEG 2000 lossless

JPEG 2000 lossless

Aspect Ratio

1:1

Image Quality

ISO/IEC 29794-6

ISO/IEC 29794-6

Operation Temperature*

-30 C to +50 C

-30 C to +50 C

EMC compliance

FCC Class A or equivalent

FCC Class A or equivalent

Preview

> 3 FPS Jpeg lossless frames with quality score superimposed

Not Applicable

Image Specification

ISO 19794-6

ISO 19794-6

ISO Format

K3

K7

FTM

SBI 1.0 - Use host based security, SBI 2.0 - FTM supported security

SBI 2.0 - FTM supported security

* MOSIP adopters to decide and finalize.

Face Capture

Refer ISO 19794-5:2011

Factor

Registration Devices

Authentication Devices

Minimum Resolution

1080 Pixels at 2.8 mm with 110 degree view

1080 Pixels at 2.8 mm

Skin Tone

All

All

Operation Temperature*

-30 C to +50 C

-30 C to +50 C

EMC compliance

FCC Class A or equivalent

FCC Class A or equivalent

Image Specification

ISO/IEC 19794-5

ISO/IEC 19794-5

Exception Image Specification

Full Frontal with FACE features, two palms next to the face, waist up photo. 6X4 mm

NA

Image quality

ICAO - Full frontal image, +/- 5 degrees rotation, 24 bit RGB, white background, 35 mm width, 45 mm height

Image format

JPEG 2000 lossless

JPEG 2000 lossless

FTM

SBI 1.0 - Use host based security, SBI 2.0 - FTM supported security

SBI 2.0 - FTM supported security

* MOSIP adopters to decide and finalize

We recommend that countries look at ergonomics, accessibility, ease of usage, and common availability of devices while choosing devices for use in registration and authentication scenarios.

XML Container

The biometric data is wrapped in CBEFF XML.