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1. WO1996038946 - METHOD OF ENCODING SEQUENCES CONSISTING OF FIGURE-CODED DATA UNITS

Publication Number WO/1996/038946
Publication Date 05.12.1996
International Application No. PCT/DE1996/000951
International Filing Date 30.05.1996
Chapter 2 Demand Filed 21.11.1996
IPC
G09C 5/00 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
5Ciphering or deciphering apparatus or methods not provided for in other groups of this subclass, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
H04K 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
KSECRET COMMUNICATION; JAMMING OF COMMUNICATION
1Secret communication
H04N 1/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver
CPC
G09C 5/00
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
5Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
H04L 2209/60
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
60Digital content management, e.g. content distribution
H04L 9/001
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
001using chaotic signals
H04N 1/32203
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver ; or between image input and image output device
32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
32144embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
32203Spatial or amplitude domain methods
H04N 1/32229
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver ; or between image input and image output device
32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
32144embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
32203Spatial or amplitude domain methods
32229with selective or adaptive application of the additional information, e.g. in selected regions of the image
H04N 1/32245
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver ; or between image input and image output device
32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
32144embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
32203Spatial or amplitude domain methods
32229with selective or adaptive application of the additional information, e.g. in selected regions of the image
32245Random or pseudorandom selection of pixels
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • BOCIONEK, Siegfried [DE]/[DE] (UsOnly)
  • KARLS, Ingolf [DE]/[DE] (UsOnly)
  • SCHÜTT, Dieter [DE]/[DE] (UsOnly)
  • LATOCHA, Wanda [DE]/[DE] (UsOnly)
Inventors
  • BOCIONEK, Siegfried
  • KARLS, Ingolf
  • SCHÜTT, Dieter
  • LATOCHA, Wanda
Priority Data
195 20 232.501.06.1995DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR VERSCHLÜSSELUNG VON FOLGEN, DIE AUS ZAHLENKODIERTEN INFORMATIONSEINHEITEN BESTEHEN
(EN) METHOD OF ENCODING SEQUENCES CONSISTING OF FIGURE-CODED DATA UNITS
(FR) PROCEDE DE CODAGE DE SEQUENCES COMPOSEES D'UNITES DE DONNEES A CODAGE NUMERIQUE
Abstract
(DE)
Mit der Erfindung wird ein Verfahren angegeben, mit welchem zahlenkodierte Informationseinheiten, beispielsweise Texte in ASCII-Format, in Bildern versteckt werden können. Hierzu werden mit Hilfe einer Chaosfunktion Bilder erzeugt und die Grauwerte jener Pixelwerte des Bildes verändert, die den ASCII-Werten der einzelnen Buchstaben entsprechen.
(EN)
The invention concerns a method by means of which figure-coded data units, for example texts in ASCII format, can be concealed in images. To this end, images are generated by means of a chaos function and the grey-scale values of those pixel values of the image which correspond to the ASCII values of the individual characters are modified.
(FR)
L'invention concerne un procédé qui permet de dissimuler des unités de données à codage numérique, par exemple des textes en format ASCII, dans des images. A cet effet, une fonction de chaos permet de produire des images et de modifier les valeurs de gris des valeurs de pixel de l'image qui correspondent aux valeurs ASCII des caractères individuels.
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