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1. (WO1997039410) DATA EMBEDDING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/039410 International Application No.: PCT/US1997/005481
Publication Date: 23.10.1997 International Filing Date: 02.04.1997
IPC:
G06T 1/00 (2006.01) ,H04N 1/32 (2006.01) ,H04N 7/08 (2006.01) ,H04N 7/26 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1
General purpose image data processing
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32
Circuits or arrangements for control or supervision between transmitter and receiver
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
08
Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
24
Systems for the transmission of television signals using pulse code modulation
26
using bandwidth reduction
Applicants:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA [US/US]; Business & Patent Law Mail Stop D412 Los Alamos, NM 87545, US
SANDFORD, Maxwell, T., II. [US/US]; US
HANDEL, Theodore, G. [US/US]; US
Inventors:
SANDFORD, Maxwell, T., II.; US
HANDEL, Theodore, G.; US
Agent:
WYRICK, Milton, D. ; Los Alamos National Laboratory Mail Stop D412 Los Alamos, NM 87545, US
Priority Data:
08/626,83602.04.1996US
Title (EN) DATA EMBEDDING
(FR) INTEGRATION DE DONNEES
Abstract:
(EN) A method of embedding auxiliary information into a set of host data, such as a photograph, television signal, facsimile transmission, or identification card. All such host data contain intrinsic noise, allowing pixels in the host data which are nearly identical and which have values differing by less than the noise value to be manipulated and replaced with auxiliary data. As the embedding method does not change the elemental values of the host data, the auxiliary data do not noticeably affect the appearance or interpretation of the host data. By a substantially reverse process, the embedded auxiliary data can be retrieved easily by an authorized user.
(FR) L'invention concerne un procédé d'intégration d'informations auxiliaires dans un ensemble de données hôtes telles qu'une photographie, un signal de télévision, une transmission par télécopie ou une carte d'identification. Toutes ces données hôtes renferment un bruit intrinsèque, ce qui permet de manipuler et de remplacer par des données auxiliaires les pixels dans les données hôtes qui sont presque identiques et qui ont des valeurs de bruit qui diffèrent d'une valeur inférieure à la valeur de bruit. Comme le procédé d'intégration ne modifie pas les valeurs élémentaires des données hôtes, les données auxiliaires n'affectent pas de manière notoire l'apparence ou l'interprétation des données hôtes. Selon un processus sensiblement inverse, les données auxiliaires intégrées peuvent être facilement extraites par un utilisateur autorisé.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (GH, KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US5819289AU1997024352