US Patent No: 6,272,245
Number of patents in Portfolio can not be more than 2000
Apparatus and method for pattern recognition
Stats
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Aug 7, 2001
Issued date -
Jan 23, 1998
filing date -
09/012,901
serial no -
In Force
status
Importance
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Abstract
Features characterizing at least two significant portions or regions of the printed pattern on a model document are extracted from a scanned-in image of the model document. Statistical characteristics of each significant region are calculated from the extracted features and saved in a memory. In addition, geometrical relationships, e.g. distances and angles, between the regions are also saved in a memory. The geometrical relationships are represented by the coordinates of the regions in a predetermined coordinate system, e.g. the x-y coordinate system corresponding to the scan area on the platen of a scanner. When a new or trial document is scanned and examined through a search window, features are extracted from the search window blocks and compared to the statistical characteristics of the model document previously stored in memory. If there is a match, the coordinates of the search window having the matching features in the trial document are recorded in a candidate list. After the entire trial document has been processed, the geometric relationships between the window blocks on the candidate list are compared with the geometrical relationships of the matching significant region blocks of the model document and if the relationships correspond the trial document is considered a match.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,604,596 Copying apparatus having determination unit for special original and for controlling copying and marking based on determination | 46 | 1994 | |
| 5,647,010 Image forming apparatus with security feature which prevents copying of specific types of documents | 58 | 1994 | |
| 5,781,653 Image processing apparatus for determining copying-inhibited document | 24 | 1995 | |
| 5,751,854 Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system | 91 | 1996 | |
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| 5,216,724 Apparatus for image reading or processing | 198 | 1992 | |
| 5,621,810 Image reading or processing with ability to prevent copying of certain originals | 37 | 1994 | |
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| 5,440,409 Image forming apparatus with an unapproved copy preventing means | 13 | 1994 | |
| 5,481,378 Image forming apparatus with an unapproved copy preventing means | 26 | 1995 | |
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| 5,845,008 Image processing device and method for identifying an input image, and copier scanner and printer including same | 46 | 1995 | |
| 5,793,901 Device and method to detect dislocation of object image data | 44 | 1995 | |
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| 5,515,451 Image processing system for selectively reproducing documents | 68 | 1993 | |
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| 5,483,602 Method and apparatus for detecting printed images on documents by testing for the presence in the images of structural elements having defined regularities which are recognizable by the eye and common to a variety of documents | 24 | 1993 | |
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| 5,592,573 Method and apparatus for determining mis-registration | 18 | 1994 | |
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| 4,823,393 Bill discriminating device | 166 | 1987 | |
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| 5,226,095 Method of detecting the position of an object pattern in an image | 38 | 1992 | |
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| 5,379,093 Image processing machine capable of inhibiting copying of valuable papers | 28 | 1993 | |
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| 4,386,432 Currency note identification system | 157 | 1980 | |
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| 5,533,144 Anti-counterfeit pattern detector and method | 41 | 1994 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 7, 2013 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |