Matches 151 - 200 out of 250 < 1 2 3 4 5 >
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6173068 Method and apparatus for recognizing and classifying individuals based on minutiae  
A method and apparatus for annotation of medical imagery to facilitate patient identification, diagnosis, and treatment is characterized by an imaging device for producing a first signal...
6134340 Fingerprint feature correlator  
A device, and a method for its operation, for verifying a person's identity by comparing in a correlator (18) selected features of a reference fingerprint image, generated in a sensor (10) from the...
6122395 Fingerprint dictionary image renewing method  
A dictionary image renewing method in a fingerprint identification device registers images into a dictionary memory as multiple dictionaries. The method includes extracting images from a plurality...
6118890 System and method for broad classification of biometric patterns  
A computer implemented method may be used in classifying and identifying finger prints. Dab prints are analyzed according to intersections with fiducial lines. A two-dimensional Hidden Markov Model...
6118891 Fingerprint/palmprint image processing apparatus  
A local information extracting portion 11 extracts a plurality of ridge line candidate images for each of local regions into which an image has been divided. A first ridge line candidate image...
6100811 Fingerprint actuation of customized vehicle features  
Apparatus, and a corresponding method for its use, for gaining access to and operating a vehicle, such as a car (10), by means of at least one fingerprint sensor (16) installed inside the vehicle...
6094499 Pattern collation apparatus  
A pattern collation apparatus is designed to identify a registration pattern and a collation pattern as identical patterns or not even with a rotation offset between the registration pattern and...
6091839 Fingerprint characteristic extraction apparatus as well as fingerprint classification apparatus and fingerprint verification apparatus for use with fingerprint characteristic extraction apparatus  
The invention provides a fingerprint characteristic extraction apparatus wherein classification and preselection processing with an augmented degree of accuracy can be achieved without...
6075455 Biometric time and attendance system with epidermal topographical updating capability  
A biometric time and attendance device for scanning an epidermal portion of a human body, generating an epidermal topographical pattern and transmitting the epidermal topographical pattern to a...
6072895 System and method using minutiae pruning for fingerprint image processing  
A computer based image processing system uses an extraction process to extract one or more features from a target fingerprint image. The feature extraction process identifies one or more of the...
6067368 Fingerprint sensor having filtering and power conserving features and related methods  
A fingerprint sensor includes an array of fingerprint sensing elements and associated active circuits and an impedance matrix filter connected to the active circuits for filtering the signals. The...
6064753 System and method for distortion control in live-scan inkless fingerprint images  
A computer system and method determines the force and/or torque applied during the image acquisition stage of a biometric characteristic. Images with very high or very low pressure or high shear...
6052475 Fingerprint detector using ridge resistance sensing array  
A fingerprint detector that uses a skin resistance sensing array for producing a sample trajectory signal when a fingertip is moved across the sensing array surface. The sample trajectory signal...
6049621 Determining a point correspondence between two points in two respective (fingerprint) images  
The invention is a system and method for determining a correspondence between a point selected from a set of points extracted from one image and an another point selected from the second set of...
6047079 Method of and an apparatus for pre-selecting fingerprint cards  
To provide an apparatus for pre-selecting fingerprint cards having certain similarity to an S-card to be identified, at a high-speed, among a plurality of F-cards, an apparatus of the invention...
6041133 Method and apparatus for fingerprint matching using transformation parameter clustering based on local feature correspondences  
The method and apparatus of the present invention provide for automatic recognition of fingerprint images. In an acquisition mode, subsets of the feature points for a given fingerprint image are...
6018586 Apparatus for extracting skin pattern features and a skin pattern image processor using subregion filtering  
A skin pattern image is filtered by convolution calculation on a real plane or product calculation on a Fourier transformed plane with each of two-dimensional filters prepared according to kinds of...
6005963 System and method for determining if a fingerprint image contains an image portion representing a partial fingerprint impression  
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....
6002787 Fingerprint analyzing and encoding system  
A system for converting an image-enhanced digitized raster fingerprint image to vector lines in order to generate a unique identification value for the fingerprint. The raster image pixels are...
6002785 Tenprint card selector with fingerprint pattern level processing used to select candidates for sub-pattern level processing  
A tenprint selector comprises a fingerprint pattern level feature difference calculating unit which receives and compares a set of candidates for pattern level feature types of fingerprint images...
5995642 Method for automatic fingerprint classification  
A method for automatic fingerprint classification is dependent on the number of core points and the ridge flow direction around the core points. The speed of the classification process is improved...
5995014 Biometric interface device for upgrading existing access control units  
A method and an apparatus for upgrading an existing personal control system. The upgrade is achieved by replacing the personnel data input unit of an existing personal control system with a...
5987156 Apparatus for correcting fixed column noise in images acquired by a fingerprint sensor  
A facility is provided for correcting fixed column noise that may appear in a fingerprint image acquired from a capacitive fingerprint sensor. In particular, corrective gain and offset values are...
5982914 Identification of individuals from association of finger pores and macrofeatures  
A method of identifying an individual from examination of their natural physical characteristics is shown. The method comprises obtaining from an individual during a registration process, a...
5982913 Method of verification using a subset of claimant's fingerprint  
The present invention is a method of fingerprint verification that includes the steps of capturing a complete fingerprint of a number of enrollees; capturing a portion of a claimant's fingerprint,...
5978495 Method and apparatus for accurate determination of the identity of human beings  
Methods and apparatus for the accurate determination of the identity of human beings by comparing a fingerprint image with previously recorder templates utilize an oil impregnated material to...
5974162 Device for forming and detecting fingerprint images with valley and ridge structure  
A method and ultra-compact system has been developed for illuminating and detecting the surface topography of an object such as the finger of an individual. The system is capable of producing...
5974163 Fingerprint classification system  
In order to classify fingerprint images with a high precision by integrating classification results and their merits of different classification means making use of their probability data, a...
5963656 System and method for determining the quality of fingerprint images  
A fingerprint image is divided into blocks of pixels. The blocks are marked as directional or non-directional. The blocks are also determined to be within the foreground or background of the image....
5960101 Expert matcher fingerprint system  
A system and method match a search print with one or more file prints stored in a database, wherein each of said prints including minutiae. The system and method receive a minutiae match report...
5933516 Fingerprint matching by estimation of a maximum clique  
A base pair of minutia is selected in the latent fingerprint under consideration and each tenprint or reference fingerprint. For each selected base pair, those sets of minutia pairs are selected...
5920641 Method for reconstructing linear structures present in raster form  
Linear structures are used to identify persons. In order to be able to combine a multiplicity of such linear structures in a database, their original images are analyzed and reconstructed using...
5915035 Method for extracting high-level features for fingerprint recognition  
A method to extract automatic high level features of a gray level ridge flow image including the automatic determination of the location of the high level features including the core and delta...
5901239 Skin pattern and fingerprint classification system  
A skin pattern classification system extracts ridge line data and valley line data from image data of a skin pattern. Minutiae are extracted from the ridge line data and the valley line data....
5897989 Method, apparatus and system for verification of infectious status of humans  
A method and apparatus for collecting medical data from a test subject while preserving anonymity for the test subject. The method includes steps of collecting a sample from the test subject and...
5887140 Computer network system and personal identification system adapted for use in the same  
When a request to access a file or the like is made, a characteristic measuring unit measures the physical characteristic of a user of a computer system. A data degenerating unit processes the...
5878158 Ridge-valley minutia associator for fingerprints  
A fingerprint image is processed from its original gray tone image to a binary (black and white) image. The "ridge" skeletal image is formed of the black portions of the binary image, being derived...
5876926 Method, apparatus and system for verification of human medical data  
A method and apparatus for collecting medical data from a test subject while optionally preserving anonymity for the test subject. The method includes steps of collecting a sample from the test...
5864296 Fingerprint detector using ridge resistance sensor  
A technique for detecting and verifying a fingerprint includes a skin resistance sensing array for translating the skin resistance of a fingertip into an electrical signal. The fingertip is moved...
5848176 Fingerprint fingertip orientation detection method and device  
The present invention has the object of accurately detecting fingerprint fingertip orientation by a process of calculating inner products of ridge directions in the peripheral areas of an inputted...
5825907 Neural network system for classifying fingerprints  
A system for automatically classification of human fingerprints. An unidentified fingerprint is processed to produce a direction map. The direction map is processed to generate a course direction...
5825924 Method and apparatus for image processing  
The present invention provides an image processing apparatus and method comprising a memory for storing address information of a binary registered image. An original test image is converted into a...
5796857 Apparatus for fingerprint verification using different verification method in accordance with quality grade data  
Feature points data and quality grade data of fingerprint images are stored in a data base with a respective register number of each fingerprint as an index for access. A verification method...
5737071 Method and apparatus for enhancing live-scan fingerprint reader images  
A method and apparatus for improving the optical boundary between a person's fingerprint ridges and the surface platen of a live-scan-imaging apparatus includes providing an absorbent pad...
5729334 Fraud-proof identification system  
A fraud-proof identification system is provided with a point-to-point in focus imaging system preferably a line tracking arrangement for imaging skin profiles particularly of the thumb-top which...
5717786 Apparatus for determining ridge direction patterns  
From an image memory of a fingerprint picture, gradient vectors of the picture are calculated. And from distribution of gradient vectors in a subregion, ridge direction of the subregion are...
5650842 Device and method for obtaining a plain image of multiple fingerprints  
A device for providing a plain image signal indicative of a plain image of surface characteristics of more than one finger on a hand includes an plain platen prism having a flat, rectangular shaped...
5631971 Vector based topological fingerprint matching  
A fingerprint recognition and retrieval system in which the positions of fingerprint minutiae points and an index number for each minutiae point are recorded in a storage medium. The local ridge...
5631972 Hyperladder fingerprint matcher  
A fingerprint matcher links together minutiae from a search print and minutiae from a file print in a chain to determine if the two prints match. Minutiae are extracted from the images of the...
5621516 Optical device for forming an image of an uneven surface  
An optical device for forming an image of an uneven surface, including a plane-parallel plate with a pair of parallel plane surfaces which is made of a transparent material having a refractive...
Matches 151 - 200 out of 250 < 1 2 3 4 5 >