Biometric Technology Continues to Push Boundaries
In October 2009, the BTF received four prototypes and one final report from FY08 Broad Agency Announcements (BAAs). After being demonstrated at Camp Dawson for representatives from BTF’s Concepts & Technologies and Metrics & Evaluations branches, the prototypes
were returned to Clarksburg, WV for further evaluation. A synopsis of each completed project may be found below.
AOptix: Advanced Hand-held Iris Imager
AOptix Technologies proposed the development of the Advanced Hand-held Iris Imager, marking the first step toward the next generation of hand-held biometric identification devices for use in the field. This submission was based on the science of adaptive optics, as well as the technology behind Aoptix’s already developed 2-meter standoff iris recognition system.
AOptix engineer demonstrating the functionality of the Advanced
Hand-held Iris Imager prototype.
Featuring unparalleled ease-of-use and image quality, the device gathered images illuminated in the 950nM range using automated acquisition of the face in a 15cm x 15cm x 15cm capture volume. The imager located eyes and pupils with a feedback screen and captured iris images within 2 seconds of iris capture initiation using a separate button. The images collected were superior in quality to images collected without the use of shaded collectors or controlled conditions. The 950nM saturation, combined with adaptive optics, produces images that are generally devoid of the glint, spectra, and reflections normally seen in uncontrolled image and daylight field collection.
In addition, BTF has not encountered any other system capable of generating images of such high quality in a 20-35cm standoff system. Collecting images from this distance removes the enroller from the “grasp” range of the subject, allowing definitive advantages over the very close range required for devices in use today.
The AOptix system performed above the threshold expected. The size of the device was excellent, the interface was intuitive and easy to use, and the price was reasonable. The BTF has encouraged AOptix to improve the imager by further reducing its size and power consumption and to apply for additional BAAs to ensure continued integration and product development.
Syntronics: Miniature, Non-contact, Rolled-equivalent Fingerprint Collection Device
Syntronics Rugged Field Portable
Fingerprint Workstation prototype.
Syntronics currently manufactures a sophisticated fingerprint workstation capable of detection and enhancement of latent fingerprints, the LatentMasterTM Fingerprint Workstation (LMFW). While the system was initially designed as a laboratory instrument, Syntronics has implemented further advances in technology to reduce cost and improve the workstation’s ruggedness.
The LMFW is capable of detecting and imaging latent fingerprints using light sources in the UV, visible, and infra-red (IR) spectrums. The application software also features a number of predefined image enhancement filters and auto documents for image enhancement, always retaining the original
image. The improved Syntronics LMFW provides a small, portable, and robust latent fingerprint collection and processing capability.
Sarnoff: High-throughput Rapidly Deployable Iris Biometric Capture
The Sarnoff Corporation developed the Portable Iris Checkpoint System (PICS) to enable biometric identification at remote checkpoints. All of the equipment required for identification fits into two duffel bags and a hardcase, facilitating easy transport. The PICS employs a video-based iris
biometric capture, using a custom-built video camera in conjunction with synchronized near infra-red (NIR) illumination to obtain iris images suitable for high reliability matching against an iris database. The system was designed so that up to 30 people can pass through within 1 minute and be identified against a database of pre-enrolled iris images.
Noblis: Multispectral Iris Fusion for Enhancement and Interoperability
Sarnoff engineer demonstrating the functionality of the High-throughput Rapidly Deployable Iris Biometric Capture prototype.
Noblis has conducted research suggesting that iris matching performance is not invariant to iris color and that performance can be improved by imaging outside of the typical near infra-red (NIR) spectrum. The focus of this BAA was to build upon that research by demonstrating that iris texture increases with illumination frequency for lighter-colored sections and decreases for darker sections. Using registered visible light and NIR iris images captured
using a single-lens multispectral camera, Noblis illustrated how the transmission, absorbance, and refl ection of light are impacted by the physiological properties of the iris, for different portions of the electromagnetic (EM) spectrum.
Based on this concept, Noblis introduced a new iris code: the Multispectral Enhanced Iris Code (MEC). MEC uses pixel-level fusion algorithms to exploit texture variations appearing between portions of the EM spectrum. This improves matching performance and reduces failure-to-enroll (FTE) rates. Finally, Noblis presented a model for approximating an NIR iris image using features derived from the color and structure of a visible light iris image.
Cross Match: Finger, Face, and Iris Biometric FusionTech Demonstration
Noblis Multispectral Iris Acquisition prototype.
A report and demonstration of the Cross Match Secure Electronic Enrollment Kit (SEEK) served as the BAA’s subject effort. SEEK implements biometric fusion using finger, face, and iris biometric modalities in a portable, hand-held multimodal data collection device. The device supports the
multimodal Cross Match Enterprise Match Server (EMS), which uses a biometric fusion engine based on summation of log-likelihood ratios (LLRs) generated by multiple biometric modalities, views, or samples.
A key objective of this effort was to extend the capabilities of template extraction software and EMS to enable multimodal quality-based fusion. The end result appeared to successfully meet this goal.
For more information about these projects, please contact Mr. Travis McCartney of BTF’s Concepts & Technologies Branch, at 304-326-3164.