US Patent No: 7,072,487
Number of patents in Portfolio can not be more than 2000
Watermark detection using adaptive color projections
Stats
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Jul 4, 2006
Issued date -
Jan 26, 2001
filing date -
09/771,340
serial no -
In Force
status
Importance
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Abstract
Matching the color axis of the watermark detector to the color direction used by the watermark embedder: A preferred projection axis is determined for each pixel. The preferred projection axis for each pixel is determined by examining the color values of the surrounding pixels in a selected area. Once the preferred projection axis for each pixel is determined the color values of that pixel are projected onto this axis to generate a set of values for each pixel. The watermark grid or data signal can then be detected from these values using known techniques.
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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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| 6,122,403 Computer system linked by using information in data objects | 576 | 1996 | |
| 6,636,615 Methods and systems using multiple watermarks | 140 | 1999 | |
| 6,590,996 Color adaptive watermarking | 168 | 2000 | |
| 6,332,031 Multiple watermarking techniques for documents and other data | 138 | 2000 | |
| 6,721,440 Low visibility watermarks using an out-of-phase color | 105 | 2001 | |
| 6,718,046 Low visibility watermark using time decay fluorescence | 88 | 2001 | |
| 6,728,390 Methods and systems using multiple watermarks | 74 | 2001 | |
| 6,744,906 Methods and systems using multiple watermarks | 63 | 2001 | |
| 6,700,995 Applying digital watermarks using dot gain correction | 76 | 2002 | |
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| 5,772,250 Copy restrictive color-reversal documents | 42 | 1997 | |
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| 5,530,751 Embedded hidden identification codes in digital objects | 238 | 1994 | |
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| 2002/0153,661 Method of using a hidden image game piece | 30 | 2002 | |
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| 6,563,935 Method of extracting digital watermark information and method of judging bit value of digital watermark information | 33 | 1999 | |
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| 4,985,854 Method for rapid generation of photo-realistic imagery | 34 | 1989 | |
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| 5,809,139 Watermarking method and apparatus for compressed digital video | 363 | 1996 | |
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| 5,721,788 Method and system for digital image signatures | 551 | 1992 | |
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| 4,807,031 Interactive video method and apparatus | 538 | 1987 | |
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| 6,104,812 Anti-counterfeiting method and apparatus using digital screening | 142 | 1998 | |
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| 5,930,369 Secure spread spectrum watermarking for multimedia data | 429 | 1997 | |
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| 5,915,027 Digital watermarking | 424 | 1996 | |
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| 5,862,218 Method and apparatus for in-camera image marking and authentication | 178 | 1996 | |
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| 5,051,835 Digital processing of theatrical film | 32 | 1989 | |
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| 5,617,119 Protection of an electronically stored image in a first color space by the alteration of a digital component in a second color space | 220 | 1995 | |
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| 6,272,634 Digital watermarking to resolve multiple claims of ownership | 170 | 1997 | |
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| 6,505,779 Security document with security marking formed of transparent windows | 30 | 2001 | |
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| 2001/0037,455 Authentication using a digital watermark | 74 | 2001 | |
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| 5,689,623 Spread spectrum digital screening | 67 | 1995 | |
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| 5,893,101 Protection of an electronically stored image in a first color space by the alteration of digital component in a second color space | 100 | 1997 | |
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| 6,466,209 Method for transparent marking of digital images for storage, retrieval and processing within a computer database | 21 | 1995 | |
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| 5,875,249 Invisible image watermark for image verification | 243 | 1997 | |
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| 5,933,798 Detecting a watermark embedded in an information signal | 198 | 1997 | |
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| 5,687,236 Steganographic method and device | 417 | 1996 | |
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| 2002/0018,879 Hidden image game piece | 36 | 2001 | |
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| 5,664,018 Watermarking process resilient to collusion attacks | 378 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 4, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 4, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |