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公开(公告)号：HK1022066A1
公开(公告)日：2000-07-21
申请号：HK00100524
申请日：2000-01-28
Applicant: IBM
Inventor： MORIMOTO NORISHIGE , MAEDA JUNJI
Abstract: An objective of the present invention is to provide a method for embedding additional information into a video movie without substantially having an influence on the compression efficiency of the video movie and also without substantially causing degradation of the picture quality. ÄCONSTITUTIONÜ Specify at least one embedding region in the frame of the video movie for embedding information, and determine a type of interframe prediction of the embedding region in correspondence with information to be embedded by referring to an embedding rule where a content of data to be embedded is caused to correspond to the type of interframe prediction of the embedding region. It is desirable that the frame in which the embedding region exists is a bidirectionally predictive-coded frame.
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公开(公告)号：GB2343818A
公开(公告)日：2000-05-17
申请号：GB9922676
申请日：1999-09-27
Applicant: IBM
Inventor： KOBAYASHI SEIJI , CHEN DEAN D , OHSHIMA YOSHIAKI , SHIMIZU SHUICHI , MORIMOTO NORISHIGE
IPC: G09C5/00 , G10K15/02 , G10L11/00 , G10L19/00 , G10L21/04 , G11B15/05 , G11B19/04 , G11B20/00 , G11B20/10 , G11B27/036 , H04H20/00 , H04H20/31 , H04N1/32 , H04H1/00
Abstract: Additional information (eg copyright information) is embedded into audio data such that the sonic modification caused by the embedding is not perceptible to humans, whilst the additional information can be precisely recovered after audio processing. For embedding the audio data is transformed into frequency components 120 , and for each frequency component the modification level of the audio data into which the additional information 180 can be embedded is determined 130 . A mask is generated 160/170 and used for embedding the additional information in the determined modification level 140 . The modified frequency components of the audio data are then converted back into audio data using an inverse transformation 190 . In a detector (Fig. 2) the audio data is transformed into frequency components 220 and the start point of the additional information is determined 250 . A detection mask is thence produced 270/280 and used to detect the additional information 260 from the determined start point in the transformed audio data.
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43.发明专利
公开(公告)号：CA2222346A1
公开(公告)日：1998-05-28
申请号：CA2222346
申请日：1997-11-27
Applicant: IBM
Inventor： NUMAO MASAYUKI , SHIMIZU SHUICHI , MORIMOTO NORISHIGE
IPC: H04N5/225 , G06T1/00 , H04N1/32 , H04N1/387 , H04N7/167 , H04N7/18 , H04N21/4405 , H04N21/4623 , H04N21/83 , H04L9/32 , H04N5/335
Abstract: The invention provides a digital camera which embeds authentication informat ion for detecting the identity of a photographed image into the image. By supplying the authentication information integrally with image data, the verifier is enabl ed to verify the image data without saving the authentication information. By converting the light inputted through an optical system 21 to an electric signal, a CCD 22 outputs an anal og signal of an image. A signal processor 23 generates a digital signal of the image is r esponse to the analog signal. A digital camera has: a region dividing unit 24 for dividing the image into a first image region and a second image region in response to the digital si gnal; authentication information generator 29 for generating authentication inform ation from data in the first image region; encryptor 30 for encrypting the authentication in formation; hiding means 25 for embedding the encrypted authentication information into the sec ond image region by operating the data in the second image region; and region combinin g means 26 for combining the first image region in the image with the second image regi on in which the authentication information is embedded.
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公开(公告)号：CA2220816A1
公开(公告)日：1998-05-27
申请号：CA2220816
申请日：1997-11-12
Applicant: IBM
Inventor： TEZUKA SHU , NINOMIYA SYOITI , MORIMOTO NORISHIGE
IPC: G06F12/14 , G06F21/24 , G06T1/00 , G09C5/00 , H04N1/32 , H04N1/387 , H04N7/08 , H04N7/081 , H04K1/02 , H04N5/913
Abstract: To hide message information into media information in frequency space. With this , it is the objective of the present invention to provide a data hiding method which has hig h resistance to removal or change of message information embedded into media information and which continues to effectively maintain hidden message information even when signal pr ocessing is performed by employing a frequency filter. In order to hide message information (m) into media information (M), the frequency transform of the message information (m) an d the media information (M) are performed, and frequency spectra f1 and f2 are obtaine d. Next, from the frequency spectrum f2 of the message information (m), a region containi ng feature frequency components representative of the features of the message information ( m) in real space is extracted as the base region B. Then, n copies of the base region B are generated, and in frequency space, the n copies are dispersedly arranged. Also, by making t he frequency components other than that equal to zero, a frequency spectrum f3 is generated a s intermediate information. Finally, the frequency spectrum f3 and the frequency s pectrum f, are added, and by performing the inverse frequency transform of the result, the message information (m) can be hidden into the media information (M).
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公开(公告)号：ES2297848T3
公开(公告)日：2008-05-01
申请号：ES97902687
申请日：1997-02-13
Applicant: IBM
Inventor： MORIMOTO NORISHIGE , MAEDA JUNJI
Abstract: UN OBJETO DE LA PRESENTE INVENCION ES EL DE PROPORCIONAR UN PROCEDIMIENTO PARA EMPOTRAR INFORMACION ADICIONAL EN UNA PELICULA DE VIDEO SIN QUE TENGA PRACTICAMENTE INFLUENCIA ALGUNA EN LA EFICIENCIA DE COMPRESION DE LA PELICULA DE VIDEO Y AL MISMO TIEMPO SIN PROVOCAR UNA DEGRADACION SUSTANCIAL DE LA CALIDAD DE LA IMAGEN. SE ESPECIFICA AL MENOS UNA REGION DE EMPOTRAMIENTO EN EL ENCUADRE DE LA PELICULA DE VIDEO PARA EMPOTRAR INFORMACION Y SE DETERMINA UN TIPO DE PREDICCION INTER - ENCUADRES DE LA REGION DE EMPOTRAMIENTO, EN CORRESPONDENCIA CON LA INFORMACION QUE DEBE EMPOTRARSE, HACIENDO REFERENCIA A UNA REGLA DE EMPOTRAMIENTO POR LA CUAL EL CONTENIDO DE DATOS QUE DEBEN EMPOTRARSE SE HACE QUE CORRESPONDA AL TIEMPO DE PREDICCION INTER - ENCUADRES DE LA REGION DE EMPOTRAMIENTO. ES CONVENIENTE QUE EL ENCUADRE EN EL QUE SE ENCUENTRA LA REGION DE EMPOTRAMIENTO SEA UN ENCUADRE CODIFICADO - PREDICTIVO BIDIRECCIONALMENTE.
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Patent Agency Ranking
公开(公告)号：DE69733992T2
公开(公告)日：2006-06-08
申请号：DE69733992
申请日：1997-12-10
Applicant: IBM
Inventor： SHIMIZU SHUICHI , KOIDE AKIO , MORIMOTO NORISHIGE , KOBAYASHI SEIJI
Abstract: A data hiding method for embedding message data into media data comprising the steps of obtaining a secondary key by inputting a key having a predetermined value to a specified function; determining hiding positions in which the message data will be embedded according to the obtained secondary key, and selecting one of plural hiding functions according to the secondary key so that the selected hiding function is used for each of the determined hiding positions; and embedding the message data into each of the determined hiding positions according to the selected hiding function corresponding to the hiding position.
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公开(公告)号：PL191368B1
公开(公告)日：2006-05-31
申请号：PL33279897
申请日：1997-08-12
Applicant: IBM
Inventor： MIWA KUNIHIKO , KOBAYASHI HIROYA , MORIMOTO NORISHIGE
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48.发明专利
公开(公告)号：MY120433A
公开(公告)日：2005-10-31
申请号：MYPI9705017
申请日：1997-10-24
Applicant: IBM
Inventor： SHIMIZU SHUICHI , NUMAO MASAYUKI , MORIMOTO NORISHIGE
IPC: H04N5/225 , G06T1/00 , H04N1/32 , H04N1/387 , H04N7/167 , H04N7/18 , H04N21/4405 , H04N21/4623 , H04N21/83
Abstract: A DIGITAL CAMERA HAS MEANS TO AUTHENTICATION INFORMATION INTO A PHOTOGRAPHED IMAGE FOR DETECTING THE IDENTITY OF THE IMAGE. THE AUTHENTICATION INFORMATION SUPPLIED INTEGRALLY WITH THE IMAGE DATA, SO THAT, THE VERIFIER CAN VERIFY THE IMAGE DATA WITHOUT SAVING THE AUTHENTICATION INFORMATION. THIS IS ACHIEVED BY HAVING A REGION DIVIDING UNIT (24) FOR DIVIDING THE IMAGE INTO A FIRST IMAGE REGION AND A SECOND IMAGE REGION IN RESPONSE TO THE DIGITAL SIGNAL, AUTHENTICATION INFORMATION GENERATING MEANS (29) FOR GENERATING AUTHENTICATION INFORMATION FROM DATA IN THE FIRST IMAGE REGION, ENCRYPTING MEANS (30) FOR ENCRYPTING THE AUTHENTICATION INFORMATION, HIDING MEANS (25) FOR EMBEDDING THE ENCRYPTED AUTHENTICATION INFORMATION INTO THE SECOND IMAGE REGION BY OPERATING THE DATA IN THE SECOND IMAGE REGION, AND REGION COMBINING MEANS (26) FOR COMBINING THE FIRST IMAGE REGION IN THE IMAGE WITH THE SECOND IMAGE REGION IN WHICH THE AUTHENTICATION INFORMATION IS EMBEDDED. (FIG. 2)
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公开(公告)号：GB2343818B
公开(公告)日：2004-01-21
申请号：GB9922676
申请日：1999-09-27
Applicant: IBM
Inventor： KOBAYASHI SEIJI , CHEN DEAN D , OHSHIMA YOSHIAKI , SHIMIZU SHUICHI , MORIMOTO NORISHIGE
IPC: G09C5/00 , G10K15/02 , G10L11/00 , G10L19/00 , G10L21/04 , G11B15/05 , G11B19/04 , G11B20/00 , G11B20/10 , G11B27/036 , H04H20/00 , H04H20/31 , H04N1/32 , H04H1/00
Abstract: A method and a system is provided for embedding and detecting additional information, such as copyright information, in audio data, so that a modification in the sonic quality due to the embedding is imperceptible to human beings, and does not drastically deteriorate the sonic quality.
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公开(公告)号：RU2181930C2
公开(公告)日：2002-04-27
申请号：RU99109985
申请日：1997-02-13
Applicant: IBM
Inventor： MORIMOTO NORISHIGE , MAEDA JUNDZHI
Abstract: transmission of transparent-data video pictures. SUBSTANCE: method involves building transparent data into motion-transmitting video picture incorporating set of frames by building additional data in mentioned motion-transmitting video picture using encoding method with interframe prediction. This method involves allocation of at least one additional-data build-in area in frame, defining of type of interframe prediction for mentioned build-in area including data to be built in obeying rule for building in such data that specifies consistency between content of data built in and type of interframe prediction for mentioned build-in area; motion-transmitting video picture is encoded using for the purpose interframe prediction of definite type. EFFECT: provision for avoiding worsening of picture quality and for hampering removal of additional information. 22 cl, 9 dwg, 2 tbl
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