Download e-book for kindle: Advances in biometrics by N. K. Ratha, Venu Govindaraju

By N. K. Ratha, Venu Govindaraju

ISBN-10: 1846289203

ISBN-13: 9781846289200


Biometrics expertise maintains to stride ahead with its wider popularity and its actual desire in a number of new defense features of contemporary society. From easily going online to a computer to crossing the border of a rustic, biometrics is being known as upon to fulfill the growing to be demanding situations of id management.

With contributions from academia and via prime foreign specialists within the box, this specified e-book offers a entire remedy of biometrics and provides assurance of the full gamut of themes within the box, together with information acquisition, pattern-matching algorithms, and concerns that impression on the approach point, similar to criteria, defense, networks, and databases. it's been prepared less than 3 sections: sensors, advances in biometric matching algorithms, and issues that care for matters on the structures level.

Key good points:

• contains new algorithmic advances, together with physiological biometrics (face from video, iris at a distance) and behavioral (handwriting, voice) and a strikingly novel modality in headprint biometrics

• comprises new modalities for learn, similar to infrared and multispectral imaging

• offers numerous chapters at the a lot ignored sector in terms of the sensors themselves for some of the biometric modalities

• Emphasizes the advances and state of the art applied sciences throughout

• Discusses structures point either from a human-factors perspective and the viewpoint of networking, databases, privateness and anti-spoofing

• accommodates chapters dedicated to touchless photograph trap, ultrasonic imaging and swipe methods

Written for researchers and complex scholars, this a lot wanted concise quantity is a perfect instrument to take advantage of as a prepared reference and captures the very most up-to-date in state of the art learn, delivering readers with a broader and deeper realizing of the topic.

Dr Nalini okay. Ratha is a learn employees Member on the IBM Thomas J. Watson learn middle, long island. He co-edited the winning Automatic Fingerprint acceptance Systems and in addition co-authored A advisor to Biometrics choice and method Design

Professor Venu Govindaraju is Director on the middle for Unified Biometrics and Sensors (CUBS), collage at Buffalo, kingdom collage of recent York.

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Sample text

In order to achieve significant improvements on the manner in which fingerprint images are currently acquired, SLI is used by the University of Kentucky as a means of extracting the 3D shape of the fingerprint ridges using multiple, commodity digital cameras to acquire the fingerprint scan of all five fingers simultaneously without physical contact between the sensor and the finger. The scan process takes only 200 ms. In order to obtain a 2D rolled-equivalent fingerprint from a 3D scan, certain postprocess steps are required after the acquisition.

Testing performed to date has shown strong advantages of the MSI technology over conventional imaging methods under a variety of circumstances. The source of the MSI advantage is threefold. First, there are multiple anatomical features below the surface of the skin that have the same pattern as the surface fingerprint and can be imaged by MSI. This means that additional subsurface sources of signal are present for an MSI sensor to gather and compensate for poor quality or missing surface features.

The volunteers were the same 118 people described earlier as having made multiple visits over a three-week period. Spoof samples comprised all spoof types described in the open literature as well as some additional sample types. A total of 49 types of spoofs were collected. Latex, silicone, Play-Doh, clay, rubber, glue, resin, gelatin, and tape were used in various colors, concentrations, and thicknesses. Multiple prosthetic fingers were also used. Each of the transparent and semitransparent spoof samples were tested in conjunction with each of the volunteers’ index fingers.

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Advances in biometrics by N. K. Ratha, Venu Govindaraju

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