Patents by Inventor Isao Echizen
Isao Echizen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240046424Abstract: An image processing device includes a processor that executes a procedure. The procedure includes: generating a manipulated image by executing first manipulation processing on an input image so as to anonymize information contained in the input image; generating a reconstructed image by performing reconstruction processing on the manipulated image to reconstruct the information; and, based on a comparison between the input image and the reconstructed image, determining whether or not to execute second manipulation processing on the input image or on the manipulated image to anonymize the information, wherein the second manipulation processing is different from the first manipulation processing.Type: ApplicationFiled: May 31, 2023Publication date: February 8, 2024Applicants: Fujitsu Limited, Inter-University Research Institute Corporation Research Organization of Information and SystemsInventors: Jun TAKAHASHI, Mingxie Zheng, Toshiyuki Yoshitake, Masayoshi Shimizu, Isao Echizen
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Publication number: 20240046704Abstract: A determination apparatus calculates, based on a first data group which includes data indicating behaviors of people, reference behavior data indicating a reference behavior among the people about each of a plurality of types of behaviors, acquires, from the first data group, first behavior data indicating a behavior of a first person about each behavior type, calculates difference between the first behavior data and the reference behavior data about each behavior type, determines, from the plurality of types, at least one first type whose difference is at least a first threshold, registers second behavior data indicating a behavior of the first person about each first type in a second data group, extracts third behavior data indicating a behavior of a second person from an input image, and determines whether the second person is identical with the first person based on comparison between the third and second behavior data.Type: ApplicationFiled: June 9, 2023Publication date: February 8, 2024Applicants: Fujitsu Limited, Inter-University Research Institute Corporation Research Organization of Information and SystemsInventors: Mingxie Zheng, Jun Takahashi, Toshiyuki Yoshitake, Masayoshi Shimizu, Isao Echizen
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Publication number: 20120320106Abstract: Provided is a video image display device that emits light so as to degrade image quality of illegally camcorded video images, thereby making it impossible to use the illegally camcorded image contents. A video image display system includes a projector that generates a display image based on digital video image signals; and a screen on which the image generated by the projector is projected and displayed. On a backside of the screen, there is provided an infrared ray emitting unit that emits infrared light from a video image display surface during a period while video images are being displayed on the screen. A light amount of the infrared light varies with time. It varies at a time interval equal to or less than a time constant of auto-iris control of a content recording device.Type: ApplicationFiled: February 24, 2011Publication date: December 20, 2012Applicants: RESEARCH ORGANIZATION OF INFORMATION AND SYSTEMS, SHARP KABUSHIKI KAISHAInventors: Seiichi Gohshi, Isao Echizen
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Publication number: 20120314085Abstract: Provided is a technique for easily detecting a person who attempts illegal camcording, by using device(s) that removes non-visible light as an anti-camcording interference image from a video image containing the non-visible light. A video image display system includes: a screen that displays a video image; an infrared ray emitting unit that projects infrared rays together with the video image toward an observer; and an infrared ray camera that detects infrared rays reflected by a video camera owned by the observer. The infrared ray camera particularly detects reflection light from an infrared ray cut filter attached to the video camera of the observer.Type: ApplicationFiled: February 25, 2011Publication date: December 13, 2012Applicants: RESEARCH ORGANIZATION OF INFORMATION AND SYSTEMS, SHARP KABUSHIKI KAISHAInventors: Seiichi Gohshi, Isao Echizen
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Publication number: 20120315018Abstract: Light other than visible light is emitted from a video image display section such as a screen, together with display images, so as to degrade image quality of illegally camcorded video images, thereby making it impossible to use the illegally camcorded image contents. A video image display system includes a projector that generates a display image; and a screen on which the image generated by the projector is projected and displayed. On a backside of the screen, there is provided an infrared ray emitting unit that emits infrared light from a video image display surface during a period while video images are being displayed on the screen.Type: ApplicationFiled: February 25, 2011Publication date: December 13, 2012Applicants: RESEARCH ORGANIZATION OF INFORMATION AND SYSTEMS, SHARP KABUSHIKI KAISHAInventors: Seiichi Gohshi, Isao Echizen
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Patent number: 8285998Abstract: Regularity information such as time codes embedded preliminarily through an electronic watermark is detected from a predetermined number of pieces of continuous frame data of video content through the electronic watermark. In the case where the electronic watermark is not detected from the predetermined number of pieces of continuous frame data, a non-detection count is calculated, and falsification of the predetermined number of pieces of frame data is determined on the basis of the detected regularity information and the non-detection count. Accordingly, falsification such as deletion, addition, and replacement of video content is detected with high accuracy using the electronic watermark.Type: GrantFiled: September 28, 2007Date of Patent: October 9, 2012Assignee: Hitachi Government & Public Corporation System Engineering, Ltd.Inventors: Isao Echizen, Takaaki Yamada, Nobuharu Miura, Michiro Maeta, Takashi Mizuno
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Publication number: 20120086862Abstract: A video display system of the present invention includes (i) a projector that generates a display image in accordance with a digital video signal and (ii) a screen on which an image generated by the projector is projected and displayed. Provided behind the screen is an infrared-emitting unit that emits infrared light through a video display surface during a period of time in which a picture is being displayed on the screen. This allows invisible light to be emitted through a video display section such as a screen together with a displayed image, thereby degrading the image quality of a re-shot picture and rendering use of re-shot image content impossible.Type: ApplicationFiled: July 1, 2010Publication date: April 12, 2012Applicants: RESEARCH ORGANIZATION OF INFORMATION AND SYSTEMS, SHARP KABUSHIKI KAISHAInventors: Seiichi Gohshi, Isao Echizen
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Publication number: 20100146282Abstract: Regularity information such as time codes embedded preliminarily through an electronic watermark is detected from a predetermined number of pieces of continuous frame data of video content through the electronic watermark. In the case where the electronic watermark is not detected from the predetermined number of pieces of continuous frame data, a non-detection count is calculated, and falsification of the predetermined number of pieces of frame data is determined on the basis of the detected regularity information and the non-detection count. Accordingly, falsification such as deletion, addition, and replacement of video content is detected with high accuracy using the electronic watermark.Type: ApplicationFiled: September 28, 2007Publication date: June 10, 2010Inventors: Isao Echizen, Takaaki Yamada, Nobuharu Miura, Michiro Maeta, Takashi Mizuno
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Patent number: 7577843Abstract: At least one kind of control signal concerning control of contents, added to specific locations inside contents data, is detected as first control information, and at the same time, at least one kind of control information concerning control of contents, embedded inside the contents data by a digital watermark, is detected as second control information. Consistency between the first control information as detected, and the second control information as detected is determined and on the basis of results of the determination, the control of the contents is executed. Thus, it is possible to reduce a possibility of the contents being improperly copied, thereby enabling the control with assurance of still higher safety.Type: GrantFiled: June 8, 2004Date of Patent: August 18, 2009Assignee: Hitachi, Ltd.Inventors: Isao Echizen, Takao Arai, Hiroyuki Kimura, Takaaki Yamada, Yasuhiro Fujii
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Patent number: 7499565Abstract: A technology of digital watermarking for binary images (including documents) is provided, which is capable of adjusting the amount of information to be embedded while avoiding the deterioration of image quality as far as possible. The watermark information is inserted by giving the standard for judgment of modification and the order of preference for modification according to the characteristic properties of the human visual sense for binary images and performing modification on pixels sequentially in the descending order of preference.Type: GrantFiled: May 10, 2004Date of Patent: March 3, 2009Assignee: Hitachi, Ltd.Inventors: Yasuhiro Fujii, Kazunori Nakano, Isao Echizen, Hiroshi Yoshiura
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Patent number: 7478432Abstract: A contents control method for controlling a process on the receiving side which is applied to contents transmitted from the transmitting side to the receiving side, includes a step of adding, when a predetermined block of the transmitted contents is an area where control information for controlling the process substance on the receiving side which is applied to the contents is added, the control information to the block. The method also includes a step of receiving a process designation concerning the transmitted contents, and a step of applying, when user information stored in a receiving side apparatus which receives the transmitted contents, or information concerning the receiving side apparatus satisfies conditions corresponding to the received process designation in the control information added to the block of the contents, a process corresponding to the process designation to the received block.Type: GrantFiled: February 6, 2002Date of Patent: January 13, 2009Assignee: Hitachi, Ltd.Inventors: Isao Echizen, Hiroshi Yoshiura, Kunihiko Miyazaki, Kousuke Anzai, Jun'ichi Taguchi, Kazunori Nakano, Katsuyuki Okeya
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Patent number: 7310428Abstract: The present invention can detect watermark information from motion picture of various scanning methods and various picture sizes without causing increase of a memory capacity. A watermark information detection apparatus 1 converts encoded watermarked motion picture 4 into standard motion picture 5 having the smallest data size among the assumed kinds of motion picture. Further, the watermark information detection apparatus 1 scales a standard coordination system that is utilized for specifying embedding locations of a watermark pattern. Then, with respect to each field of the standard motion picture 5, watermark information is detected from predetermined locations specified in the scaled standard coordinate system by the watermark pattern.Type: GrantFiled: April 11, 2003Date of Patent: December 18, 2007Assignee: Hitachi, Ltd.Inventors: Kousuke Anzai, Isao Echizen, Hiroshi Yoshiura
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Patent number: 7293294Abstract: A method for using digital contents is provided. In the method, a request is made to a provider apparatus for a certificate containing a first provider ID embedded therein by a certification authority, and the certificate is received from the provider apparatus. A decision is made by using the certificate as to whether or not the provider is authorized by the certification authority. A request is made to the provider apparatus for a digital content having a second provider ID embedded therein by a contents guarantee authority when the provider is authorized by the certification authority, and the digital content is received from the provider. The first provider ID is read from the certificate, the digital content is correlated with the second provider ID, and the digital content is stored in a storage medium. The second provider ID is detected from the digital content in response to a request to use the digital content.Type: GrantFiled: July 15, 2003Date of Patent: November 6, 2007Assignee: Hitachi, Ltd.Inventors: Hiromi Ukai, Shigeki Hirasawa, Kousuke Anzai, Isao Echizen, Hiroshi Yoshiura, Masataka Okayama, Shuichi Tago
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Patent number: 7113613Abstract: A digital watermark information detection method for detecting information inserted as a digital watermark from contents has a step of converting the contents into a predetermined specified format and a step of trying to detect information from the converted contents. When a plurality of specified formats are defined in advance and detection of the information from the converted contents fails, the contents is converted into another specified format and the information detection is retried.Type: GrantFiled: February 20, 2002Date of Patent: September 26, 2006Assignee: Hitachi, Ltd.Inventors: Isao Echizen, Hiroshi Yoshiura, Hiroyuki Kimura, Akio Fukushima, Kousuke Anzai
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Patent number: 7065226Abstract: A method of embedding digital watermark information b1–bn (2?n) in image data. The image data is divided into a plurality of areas S each consisting of M×N (1?M, N) pixels. A plurality of areas G each consisting of P×Q (1?P, Q) of the areas S are defined. Each of the areas S constituting each area G is allocated to some one of: areas T1–Tn in which said digital watermark information b1–bn is respectively embedded and areas H1–Hm (1?m) in which information is not embedded. One or more areas T and one or more areas H are located in a predetermined arrangement in each area G. And, the plurality of areas G are located in a predetermined rule.Type: GrantFiled: May 31, 2000Date of Patent: June 20, 2006Assignee: Hitachi, Ltd.Inventors: Kousuke Anzai, Isao Echizen, Hiroshi Yoshiura, Shinobu Eikawa
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Patent number: 7047412Abstract: To lighten the processing load of embedding a digital watermark in content data, a preliminary process (embedding strength map generating process) run by a preprocessing section and the main process (digital watermark embedding process) run by a man processing section are run mutually independently. Specifically, the preliminary process of the preprocessing section is run each time new content data is stored to the content data database, and the main process of the main processing section is run when a content delivery request is received from a receiving terminal (client).Type: GrantFiled: March 6, 2001Date of Patent: May 16, 2006Assignee: Hitachi, Ltd.Inventors: Isao Echizen, Hiroshi Yoshiura, Ryoichi Sasaki, Shinichiro Harano, Shinobu Eikawa
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Patent number: 7047407Abstract: A network system capable of preventing the leakage of a confidential file by an inadvertent act of a transmitting party and capable of meeting the requirement for an arbitrary file format is disclosed. A label indicating a security level (“confidential” or “unclassified”) is attached to the file in a client terminal, which transmits the labeled file outside. A transmission management program on a gateway server checks the label of the file, and in the case where the security level is “unclassified”, transmits the file to an external network. Also, a label management program manages the labeled file in the client terminal.Type: GrantFiled: February 14, 2002Date of Patent: May 16, 2006Assignee: Hitachi, Ltd.Inventors: Shinji Itoh, Kunihiko Miyazaki, Isao Echizen
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Publication number: 20060015735Abstract: In embedding an electronic watermark in a plurality of frames making up video data, the filtering processing is executed by omitting a portion of the frames in terms of time or space. By using a result of the filtering processing, the electronic watermarking processing is executed on a portion that has undergone the filtering processing.Type: ApplicationFiled: June 15, 2005Publication date: January 19, 2006Inventors: Kei Kudo, Mizuho Narimatsu, Isao Echizen
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Patent number: 6970575Abstract: A digital watermark information is extracted from geometrically deformed image without using a calibrating digital watermark. Pixel data at positions predetermined in an X-Y coordinate used when embedding the watermark is extracted from image data in which the digital watermark has been embedded for given pixel data and compared with a reference value to determine whether the watermark has been embedded in the pixel data concerned or not. This processing is repeated until it is confirmed that the information is embedded in the pixel data concerned, while applying geometric deformation to the image data.Type: GrantFiled: September 22, 2003Date of Patent: November 29, 2005Assignee: Hitachi, Ltd.Inventors: Isao Echizen, Hiroshi Yoshiura, Yutaka Kurosu, Kousuke Anzai
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Publication number: 20050120218Abstract: At least one kind of control signal concerning control of contents, added to specific locations inside contents data, is detected as first control information, and at the same time, at least one kind of control information concerning control of contents, embedded inside the contents data by a digital watermark, is detected as second control information. Consistency between the first control information as detected, and the second control information as detected is determined and on the basis of results of the determination, the control of the contents is executed. Thus, it is possible to reduce a possibility of the contents being improperly copied, thereby enabling the control with assurance of still higher safety.Type: ApplicationFiled: June 8, 2004Publication date: June 2, 2005Inventors: Isao Echizen, Takao Arai, Hiroyuki Kimura, Takaaki Yamada, Yasuhiro Fujii