1
Rudolf Maarten Bolle, Sharon Louise Nunes, Sharathchandra Pankanti, Nalini Kanta Ratha, Barton Allen Smith, Thomas Guthrie Zimmerman: Method for biometric-based authentication in wireless communication for access control. International Business Machines Corporation, Randy W Lacasse, Ramraj Soundararajan, Lacasse & Associates, November 16, 2004: US06819219 (341 worldwide citation)

Smart cards systems that are utilized in biometric authentication are slow in processing and have the cards themselves have the added disadvantage of being misplaced or lost. Moreover, storing biometric data (on a database) over a network poses security issues that in extreme instances can be compro ...


2
Anil K Jain, Lin Hong, Rudolf Maarten Bolle, Sharathchandra Umapathirao Pankanti: System and method for determining block direction in fingerprint images. International Business Machines Corporation, Louis J Percello, Perman & Green, September 11, 2001: US06289112 (327 worldwide citation)

A reliable estimate of image pixel (fingerprint ridge) orientations, and block orientations for a given block is determined by finding an optimal block size in an area of an image, e.g., a fingerprint image. An initial block size is chosen. Then a block direction is determined, e.g., by analyzing in ...


3
Rudolf Maarten Bolle, Arun Hampapur: System and method for measuring similarity between a set of known temporal media segments and a one or more temporal media streams. International Business Machines, Louis J Percello, Law Office of Charles W Peterson Jr, January 6, 2004: US06675174 (199 worldwide citation)

This invention is a scaleable system to perform exact matching or similarity matching between a large store of reference temporal media sequences and a query target temporal media sequence. The system is not limited to finding exact matching media segments but also can find media segments that are s ...


4
Rakesh Mohan, Jonathan Hudson Connell, Rudolf Maarten Bolle: Produce size recognition system. International Business Machines Corporation, Louis J Percello Esq, Whitham Curtis & Whitham, December 21, 1999: US06005959 (137 worldwide citation)

The present system and apparatus uses image processing to recognize object size within a scene. The system includes novel image processing apparatus and methods to segment one or more object images from a background image of the scene. A processed image (that can be used to characterize size feature ...


5
Anil K Jain, Lin Hong, Rudolf Maarten Bolle, Sharathchandra Umapathirao Pankanti: System and method for matching (fingerprint) images an aligned string-based representation. International Business Machines Corporation, Louis J Percello, Perman & Green, February 6, 2001: US06185318 (106 worldwide citation)

The invention is a system and method for matching a two dimensional pattern of lines, e.g. a fingerprint, by creating a one dimensional representation of one or more points (e.g., minutiae) on the lines in the patterns to be matched. The one dimensional representations are created by finding a corre ...


6
Rudolf Maarten Bolle, Sharathchandra Umapatirao Pankanti, Yi Sheng Yao: System and method for determining if a fingerprint image contains an image portion representing a partial fingerprint impression. International Business Machines Corporation, Louis J Perman & Green Percello, December 21, 1999: US06005963 (100 worldwide citation)

A fingerprint image is divided into blocks of pixels. The blocks are determined to be within the foreground or background of the image. Each of the foreground blocks are assigned a block direction. If an image consists of the complete impression of the fingerprint, there should exist at least one pa ...


7
Rudolf Maarten Bolle, Jonathan H Connell, Nalini K Ratha: System and method for distorting a biometric for transactions with enhanced security and privacy. International Business Machines Corporation, Louis J Percello Esq, December 28, 2004: US06836554 (93 worldwide citation)

Authentication methods are very important in several applications. Existing methods of authentication based on possessions or knowledge have several problems that can be overcome by using biometrics. Unfortunately biometrics-based authentication is unrevocable today and has many privacy concerns in ...


8
Rakesh Mohan, Jonathan Hudson Connell, Rudolf Maarten Bolle: Produce size recognition system. International Business Machines, LouisJ Percello, McGuireWoods, October 30, 2001: US06310964 (85 worldwide citation)

The present system and apparatus uses image processing to recognize object size within a scene. The system includes novel image processing apparatus and methods to segment one or more object images from a background image of the scene. A processed image (that can be used to characterize size feature ...


9
Rudolf Maarten Bolle, Jonathan Hudson Connell, Nalini K Ratha: System and method for liveness authentication using an augmented challenge/response scheme. International Business Machines Corporation, Louis J Percello Esq, February 1, 2005: US06851051 (84 worldwide citation)

An integrated signal sensor with processing power to augment a challenge from server and compute the response is proposed to guarantee that the sensed signal is live and not stored. The sensor-processor computes the response to the augmented challenge based on the signal charactersitics of the sense ...


10
Anil K Jain, Lin Hong, Rudolf Maarten Bolle, Sharathchandra Umapathirao Pankanti: System and method for identifying foreground and background portions of digitized images. International Business Machines Corporation, Louis J Percello, Perman & Green, July 17, 2001: US06263091 (78 worldwide citation)

Disclosed in a system and method for segmenting foreground pixel from background pixels in a digital image, specifically a fingerprint image. First the image is divided into blocks of optimal size. Then, for a given block, an overall gradient magnitude and a projected gradient magnitude is determine ...