CBEFF

Common Biometric Encoding File Format

Overview

• https://www.ibia.org/cbeff/iso/bdb-format-identifiers

• https://www.ibia.org/cbeff/iso

• https://www.nist.gov/itl/iad/image-group/resources/incits-standardized-biometric-data

• https://www.nist.gov/itl/iad/image-group/resources/biometric-special-databases-and-software

• https://docs.mosip.io/platform/modules/id-authentication/id-authentication-functionality

• https://github.com/mosip/documentation/blob/f23cd13dc2600be34ce743caf573eb5a7b2f240e/docs/Secure-Biometric-Interface-Specification.md

The exact format of a BDB can be proprietary, unpublished. Here is excerpt:

CBEFF-Tilton-2009-short.pdf

https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914210

https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914210

https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914210

----oOo----

Those boxes in dark gray are not needed. But those in light gray are are.

griffin-face-std-m1.pdf

Face_Image_Data_Standard_Ver1.0.pdf

Face_Image_Data_Standard_Ver1.0.pdf

The first 14 bytes is fixed:

• 46 41 43 00 (format identifier)

• 30 31 30 00 (version no.)

• 00 01 48 EF (length of record)

• 00 01 (number of face images)

0000000 46 41 43 00 30 31 30 00 00 01 48 ef 00 01 00 01  >FAC.010...H.....<
0000020 48 e1 00 00 00 00 00 00 00 00 00 00 00 00 00 00  >H...............<
0000040 00 00 01 01 02 80 01 e0 01 05 00 00 00 00 00 00  >................<
0000060 00 0c 6a 50 20 20 0d 0a 87 0a 00 00 00 14 66 74  >..jP  ........ft<
0000100 79 70 6a 70 32 20 00 00 00 00 6a 70 32 20 00 00  >ypjp2 ....jp2 ..<
0000120 00 47 6a 70 32 68 00 00 00 16 69 68 64 72 00 00  >.Gjp2h....ihdr..<
0000140 01 e0 00 00 02 80 00 03 07 07 00 00 00 00 00 0f  >................<
0000160 63 6f 6c 72 01 00 00 00 00 00 10 00 00 00 1a 72  >colr...........r<
0000200 65 73 20 00 00 00 12 72 65 73 63 99 ca 00 01 99  >es ....resc.....<
0000220 ca 00 01 00 00 00 00 00 00 6a 70 32 63 ff 4f ff  >.........jp2c.O.<

The next 20 bytes is also fixed.

Face_Image_Data_Standard_Ver1.0.pdf

• 00 01 48 E1 (facial record data length)

• 00 00 (number of feature points)

• 00 (gender)

• 00 (eye color)

• 00 (hair color)

• 00 00 00 (property mask)

• 00 00 (expression)

• 00 00 00 (pose angle)

• 00 00 00 (pose angle uncertainty)

Face_Image_Data_Standard_Ver1.0.pdf

Face_Image_Data_Standard_Ver1.0.pdf

Image Information 12 bytes:

• 01 (face image type)

• 01 (image data type)

• 02 80 (width)

• 01 E0 (height)

• 01 05 (image color space)

• 00 (source type)

• 00 00 (device type)

• 00 00 (quality)

BiometricDataInterchangeFormatsPart5FaceImageData.pdf

Additional Details

More details can be found in Face_Image_Data_Standard_Ver1.0.pdf. For example, details such as eye color:

Face_Image_Data_Standard_Ver1.0.pdf

BiometricDataInterchangeFormatsPart5FaceImageData.pdf

Summary

Correction: image color space is 1 byte only

OID

OID 1.1.19785.0.257.0.8 face-image reference info

Decode

"data" : "base64urlencode(header).base64urlencode(payload).base64urlencode(signature)