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 Title: |
US6301368:
System and method for data hiding in compressed fingerprint images
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bolle, Rudolf Maarten; Bedford Hills, NY
Connell, Jonathan Hudson; Cortlandt-Manor, NY
Ratha, Nalini Kanta; White Plains, NY
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| Assignee: |
International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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| Published / Filed: |
2001-10-09
/ 1999-01-29
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| Application Number: |
US1999000240446
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| IPC Code: |
Advanced:
G06T 1/00;
H04N 1/32;
Core:
more...
IPC-7:
G06K 9/00;
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| ECLA Code: |
G06T1/00W2; H04N1/32C19B2; T04N201/32C4D; T04N201/32C6B; T04N201/32C10; T04N201/32C12C; T04N201/32C19B2D; T04N201/32C19B2S; T04N201/32C19B4C;
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| U.S. Class: |
Current:
382/100;
Original:
382/100;
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| Field of Search: |
382/100,232,246,251,276,282,284
713/176,179
705/064,67
455/411
380/258
348/568
707/101
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| Priority Number: |
| 1999-01-29 |
US1999000240446 |
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| Abstract: |
A method to hide small messages in a wavelet compressed fingerprint image is presented. The method is characterized by random placement of the message bits in the compressed and quantized indices. The compressed image can be decompressed by any certified decompressor without any visible difference. However, the decoder aware of the decompression can only retrieve the hidden message in the image and additionally decompress the image without any error in pixel values.
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| Attorney, Agent or Firm: |
Percello, Louis J. ;
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| Primary / Asst. Examiners: |
Johns, Andrew W.; Nakhjavan, Shervin
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 18 claims |
We claim:
1. A computer system for hiding an information sequence in a compressed image comprising:
- an image compressor that spatially compresses an image to create a spatially compressed image with a plurality of frequency components, each with a respective spatial frequency and a respective amplitude;
- a candidate selector that selects a selected set of a plurality of the frequency components, the selected set having the frequency components with high spatial frequencies and large amplitudes;
- a data site selector that uses a random process to randomly select from the selected set to create a site set; and
- a site modifier that partitions the information sequence into one or more portions and uses one or more of the portions to modify one of the amplitudes of one of the frequency components in the site set.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 18 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other References: |
WSQ Gray-scale Fingerprint Image Compression Specification, IAFIS-IC-0110v2.
N. Ratha, et al, "Adaptive Flow Orientation-Based Feature Extraction in Fingerprint Images", Pattern Recognition, vol. 28, No. 11, pp. 1657, 1995.
(16 pages)
Cited by 22 patents
[ISI abstract]
W. Bender et al, "Techniques for data hiding", IBM Systems Journal, vol. 35, Nos. 3 and 4, 1996.
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