
US Patent No: 6,002,787
Number of patents in Portfolio can not be more than 2000
Fingerprint analyzing and encoding system
Stats
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Dec 14, 1999
Issued date -
Dec 6, 1995
filing date -
08/568,404
serial no -
In Force
status
Importance
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Abstract
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 converted to vector lines along the fingerprint ridges and the vector lines are classified and converted according to type. The line types are then analyzed and a list of identification features corresponding to the vector line types is generated. The identification features between the vector line types are compared and the image is classified according to fingerprint class. A unique identification value is then generated by numerically encoding the classified identification features.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,210,899 Fingerprint-based access control and identification apparatus | 141 | 1977 | |
| 4,185,270 Fingerprint identification method and apparatus | 54 | 1978 | |
| 4,581,760 Fingerprint verification method | 82 | 1983 | |
| 4,618,988 Matcher | 48 | 1984 | |
| 4,685,145 Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scale | 29 | 1984 | |
| 4,723,298 Image compression technique | 26 | 1985 | |
| 4,696,046 Matcher | 42 | 1986 | |
| 4,787,742 Direct finger reading | 29 | 1987 | |
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| 4,646,352 Method and device for matching fingerprints with precise minutia pairs selected from coarse pairs | 50 | 1983 | |
| 4,827,527 Pre-processing system for pre-processing an image signal succession prior to identification | 48 | 1985 | |
| 5,040,224 Fingerprint processing system capable of detecting a core of a fingerprint image by statistically processing parameters | 48 | 1989 | |
| 4,947,442 Method and apparatus for matching fingerprints | 48 | 1989 | |
| 4,944,021 Identification system employing verification of fingerprints | 78 | 1989 | |
| 4,956,870 Pattern selecting device capable of selecting favorable candidate patterns | 34 | 1989 | |
| 5,337,369 Equipment for fingerprint pattern classification | 26 | 1993 | |
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| 4,225,850 Non-fingerprint region indicator | 64 | 1978 | |
| 4,876,726 Method and apparatus for contextual data enhancement | 62 | 1986 | |
| 5,187,747 Method and apparatus for contextual data enhancement | 66 | 1989 | |
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| 4,811,414 Methods for digitally noise averaging and illumination equalizing fingerprint images | 88 | 1987 | |
| 5,222,152 Portable fingerprint scanning apparatus for identification verification | 145 | 1991 | |
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| 5,089,324 Press section dewatering fabric | 29 | 1990 | |
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| 4,607,384 Fingerprint classification arrangement | 43 | 1984 | |
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| 2002/0143,320 Tracking medical products with integrated circuits | 2 | 2002 | |
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| 4,933,976 System for generating rolled fingerprint images | 92 | 1988 | |
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| 4,525,859 Pattern recognition system | 75 | 1982 | |
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| 5,050,222 Polygon-based technique for the automatic classification of text and graphics components from digitized paper-based forms | 68 | 1990 | |
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| 4,414,684 Method and apparatus for performing a comparison of given patterns, in particular fingerprints | 95 | 1980 | |
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| 4,752,966 Fingerprint identification system | 56 | 1986 | |
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| 5,109,428 Minutia data extraction in fingerprint identification | 104 | 1989 | |
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| 4,891,503 Distributed authorization system | 168 | 1988 | |
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| 4,837,843 Hybrid optical and electronic associative memory | 51 | 1987 | |
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| 5,067,162 Method and apparatus for verifying identity using image correlation | 222 | 1986 | |
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| 4,260,979 Apparatus for sensing non-coded images | 46 | 1979 | |
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| 5,105,467 Method of fingerprint verification | 62 | 1990 | |
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| 4,698,751 Systolic array for solving cyclic loop dependent algorithms | 39 | 1984 | |
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| 5,144,680 Individual identification recognition system | 101 | 1990 | |
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| 4,790,564 Automatic fingerprint identification system including processes and apparatus for matching fingerprints | 54 | 1987 | |
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| 4,993,068 Unforgeable personal identification system | 708 | 1989 | |
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| 5,040,223 Fingerprint verification method employing plural correlation judgement levels and sequential judgement stages | 66 | 1989 | |
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| 5,101,436 Hybrid image editor | 43 | 1990 | |
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| 5,095,194 Holographic credit card with automatical authentication and verification | 215 | 1989 | |
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| 5,239,590 Fingerprint verification method | 39 | 1991 | |
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| 4,995,086 Arrangement and procedure for determining the authorization of individuals by verifying their fingerprints | 161 | 1988 | |
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| 4,449,189 Personal access control system using speech and face recognition | 97 | 1981 | |
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| 4,208,651 Fingerprint identification by ridge angle and minutiae recognition | 45 | 1978 | |
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| 4,777,651 Method of pixel to vector conversion in an automatic picture coding system | 63 | 1984 | |
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| 5,050,220 Optical fingerprint correlator | 64 | 1990 | |
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| 4,454,610 Methods and apparatus for the automatic classification of patterns | 60 | 1982 | |
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| 4,896,363 Apparatus and method for matching image characteristics such as fingerprint minutiae | 77 | 1989 | |
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| 5,222,153 Apparatus for matching a fingerprint using a tacky finger platen | 45 | 1991 | |
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| 4,805,223 Skin-pattern recognition method and device | 59 | 1986 | |
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| 5,175,593 Fingerprint photographing system | 19 | 1991 | |
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| 4,253,086 Process and apparatus for positive identification of customers | 95 | 1979 | |
| 4,338,025 Identification card, sensor, and system | 24 | 1980 | |
| 4,641,350 Fingerprint identification system | 63 | 1984 | |
| 4,636,622 Card user identification system | 55 | 1985 | |
| 4,747,147 Fingerprint recognition and retrieval system | 118 | 1986 | |
| 4,817,183 Fingerprint recognition and retrieval system | 92 | 1987 | |
| 4,947,443 Method and apparatus for verifying identity | 40 | 1988 | |
| 5,053,608 Personal identification system | 84 | 1990 | |
| 5,054,090 Fingerprint correlation system with parallel FIFO processor | 90 | 1990 | |