BSS Add-on Features
The BSS add-on allows to integrate facial image format standards
support into VeriLook-based biometric systems. These standards are
supported:
- BioAPI 2.0 (ISO/IEC 1978-1:2006) (Framework and
Biometric Service Providers for face identification engines)
- ISO/IEC 19794-5:2005 (Face image Data)
- ANSI/INCITS 385-2004 (Face Recognition Format
for Data Interchange)
BSS add-on also allows to integrate JPEG 2000 with
Lossy and Lossless Face Profiles support into applications based on
VeriLook SDK.
NTFI library
Neurotechnology Token Face Image (NTFI) library is included in the
add-on.
The NTFI library is intended to provide token* face
images compatible with the Face Image Format as in ISO/IEC 19794
standard. This face image format enables range of applications on
variety of devices, including devices that have limited resources
required for data storage, and improves recognition accuracy by
specifying data format, scene constraints (lighting, pose),
photographic properties (positioning, camera focus) and digital image
attributes (image resolution, image size).
The NTFI library has the following features:
- Token face image creation from an image containing human face
using eye coordinates which may be either hand marked or detected
automatically using Neurotechnology VeriLook face detection algorithm.
- Face is detected and eye coordinates are acquired using
state-of-the-art Neurotechnology VeriLook face detection and
recognition algorithm.
- Geometrical normalization of face image according to proportions
and photographic properties in ISO/IEC 19794 standard.
- Intelligent image padding algorithm for cut of parts of token
face image as in ISO/IEC 19794 standard.
- Test the created token face image for following quality criteria
suggested in ISO/IEC 19794 standard:
- Background uniformity – the background in the token face
image should be uniform, not cluttered.
- Sharpness – the token face image should not be blurred.
- Too light or too dark images – the token face image should
not be too dark or too light.
- Exposure range of an image – the token face image should have
a reasonable exposure range to represent as much details of the subject
in the image as possible.
- Evaluate token face image quality based on suggestions of ISO/IEC
19794 standard (Using the quality criteria above).
*Token
in this context is used as "symbolic image, good enough image for
machine recognition". Token Image as in ISO/IEC19794-5: "A Face Image
Type that specifies frontal images with a specific geometric size and
eye positioning based on the width and height of the image. This image
type is suitable for minimizing the storage requirements for computer
face recognition tasks such as verification while still offering vendor
independence and human verification (versus human examination which
requires more detail) capabilities."
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