Patents by Inventor Koichi Magai
Koichi Magai 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: 20100074530Abstract: An image processing method performs reduction processing on an input image to acquire a reduced image, extracts a feature point from a group of images including the input image and one or more of the reduced images, determines as a matched feature point the feature point extracted from a matching position in each of two or more images in the group of images, calculates a local feature quantity of the matched feature point determined by the determination unit, and registers the calculated local feature quantity as a local feature quantity of the input image.Type: ApplicationFiled: September 24, 2009Publication date: March 25, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Magai, Hirotaka Shiiyama, Hidetomo Sohma, Masahiro Matsushita
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Publication number: 20100054593Abstract: An image processing apparatus executes smoothing processing (reduction conversion) of an input image to acquire a smoothed image (reduced image), acquires a normalization parameter for normalization from the smoothed image, and normalizes pixel values of the input image based on the normalization parameter.Type: ApplicationFiled: September 2, 2009Publication date: March 4, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Matsushita, Hirotaka Shiiyama, Hidetomo Sohma, Koichi Magai
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Publication number: 20090316228Abstract: A page image is acquired. Area information that includes information on existence or absence of a text area and a picture area is extracted from the acquired page image. The page image is divided into a plurality of blocks. An image feature amount of each of the divided blocks is calculated. Whether the page image includes a picture area is determined on the basis of the extracted area information and the calculated image feature amounts of the blocks.Type: ApplicationFiled: June 16, 2009Publication date: December 24, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Matsushita, Hirotaka Shiiyama, Hidetomo Sohma, Koichi Magai
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Publication number: 20090285442Abstract: A digital watermark embedding device and a digital watermark detecting device are obtained, which can realize stable digital watermark detection using fewer, and embed and detect a larger amount of digital watermark information with an identical number of pixels used for digital watermark embedding in a conventional technology.Type: ApplicationFiled: September 27, 2006Publication date: November 19, 2009Applicant: Mitsubishi Electric CorporationInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
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Publication number: 20090202103Abstract: The digital watermark embedding apparatus includes: a storing unit (15) for storing in advance at least one embedding function, at least one image converting program, and at least one image processing program that are required for a digital watermark embedding process, and storing in advance combination process information in which a process ID is assigned to each combination of those processing functions; an embedding process selecting unit (12) for selecting, as particular combination process information, one of a plurality of pieces of the combination process information; and an embedding unit (14) for obtaining from the storing unit (15) the embedding function, the image converting program, and the image processing program which are included in the selected particular combination process information, embedding particular embedding information into multimedia data, and generating determination information including the process ID corresponding to the particular combination process information.Type: ApplicationFiled: December 1, 2006Publication date: August 13, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Ryousuke Fujii, Tokumichi Murakami, Koutarou Asai, Mitsuyoshi Suzuki, Hiroshi Itou, Koichi Magai
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Publication number: 20090195814Abstract: Embodiments of the invention relate to an information processing system that is triggered by a detection of a medium removing action, detects a user's action of leaving a sheet discharge tray from which the user has removed the medium, and counts the number of carrying-away users. The information processing system counts as the number of outputting users the number of users who have issued an instruction to output a medium. Based on the number of users who removed and left and the number of outputting users, the information processing system sends a notification prompting to check a carried-away medium or a medium that the user is about to carry away from the sheet discharge tray.Type: ApplicationFiled: December 4, 2008Publication date: August 6, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Hiroshi Tojo, Masahiro Matsushita, Koichi Magai, Kotaro Yano
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Publication number: 20090136084Abstract: Provided is a digital watermark detecting device for improving the accuracy of reliability judgment of detected information thereby to prevent misdetection.Type: ApplicationFiled: September 27, 2006Publication date: May 28, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
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Publication number: 20090087101Abstract: An image processing apparatus includes an extraction unit configured to extract a feature amount from information recorded on a recording medium, an acquisition unit configured to acquire an identification image identifying an operator of the recording apparatus, a storage unit configured to store the feature amount and the identification image, wherein the identification image is associated with the feature amount, a search unit configured to compare a feature amount extracted from a predetermined medium by the extraction unit with the feature amount stored in the storage unit, wherein, based on a result of the comparison, the identification image associated with the stored feature amount is associated with the predetermined medium, and an output unit configured to output the identification image associated with the predetermined medium.Type: ApplicationFiled: September 30, 2008Publication date: April 2, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Matsushita, Hirotaka Shiiyama, Hiroshi Tojo, Koichi Magai, Kotaro Yano
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Patent number: 7479996Abstract: To obtain a noise eliminating device which is capable of efficiently separating a noise component from an image component to attenuate only the noise component.Type: GrantFiled: September 2, 2005Date of Patent: January 20, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki
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Publication number: 20080304753Abstract: A image processing apparatus extracts a plurality of feature points, comprising a local feature amount, from an inputted image, and a region information that relates to the feature point, identifies at least one of the plurality of feature points, associates the feature point thus identified with a feature point with a high relational degree between the feature point thus identified and a region that is denoted by the region information of the feature point thus identified, and registers the feature point thus identified and associated as an index of the inputted image.Type: ApplicationFiled: May 6, 2008Publication date: December 11, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Hidetomo Sohma, Tomomi Takata, Koichi Magai, Hirotaka Shiiyama
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Publication number: 20080285855Abstract: A plurality of feature points are extracted from an inputted image, and a feature amount is computed with regard to the feature point thus extracted. A prescribed plurality of alterations, i.e., a rotation, an enlargement, or a reduction, are applied to the inputted image, a plurality of altered feature amounts are estimated with regard to the feature point, and an image is retrieved from among stored images that are stored upon a storage apparatus and that is most similar to the inputted image, in accordance with the plurality of the estimated altered feature amounts.Type: ApplicationFiled: April 18, 2008Publication date: November 20, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Hirotaka Shiiyama, Masahiro Matsushita, Hidetomo Sohma, Tomomi Takata, Koichi Magai
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Publication number: 20080285789Abstract: An information processing apparatus includes an additional information conversion means for converting a text of related information into additional information and outputting this additional information, and for outputting an amount of additional information for each point of interest, an embedding region allocating means for outputting region management information including the amount of additional information, for allocating an embedding region for the additional information in an original digital input image on the basis of image size information and the amount of additional information, and for outputting information on the embedding region as region information, and an information embedding means for embedding the region management information in a predetermined region in the original digital input image, and also embedding the additional information in the original digital input image on the basis of the region information to generate and output a watermarked image.Type: ApplicationFiled: July 15, 2004Publication date: November 20, 2008Applicant: Mitsubishi Electric CorporationInventors: Tomohiro Kimura, Mitsuyoshi Suzuki, Hiroshi Ito, Minoru Wada, Ryousuke Fujii, Koichi Magai
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Publication number: 20080247675Abstract: When retrieving an image from an archive of stored images that is similar to an inputted image, an image-processing apparatus (200) extracts more than one characteristic point from the inputted image (S504), computes a characteristic amount for the characteristic points thus extracted (S505), and evaluates the fluctuation in the characteristic amount when a prescribed alteration is applied to the inputted image (S506). The image-processing apparatus selects a characteristic point from among the characteristic points thus extracted from the inputted image, and retrieves (S508) a stored image that is similar to the inputted image, in accordance with the characteristic amount of the characteristic point thus selected.Type: ApplicationFiled: March 28, 2008Publication date: October 9, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Magai, Hirotaka Shiiyama, Hidetomo Sohma, Tomomi Takata
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Publication number: 20070122044Abstract: Provided are a program, a method, and an apparatus for decoding coded data, capable of completely restoring an original stream when decoded data is coded again by causing a computer to function as: means for receiving an input of a signal coded by lossy compression and orthogonally projecting an optional real number vector on one convex aggregate X in a first vector space in which the decoded signal is present; means for judging convergence of convex projection and obtaining a real number vector x belonging to the aggregate X to output the same as a decoded signal when the convergence of the convex projection is judged; and means for orthogonally projecting an optional vector of the first vector space on one convex aggregate Y in a second vector space different from the first vector space when the convergence of the convex projection is not judged, and then repeating orthogonal projection on the aggregate X and the aggregate Y with the coded signal set as an initial value.Type: ApplicationFiled: March 8, 2004Publication date: May 31, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Hiroshi Ito, Mitsuyoshi Suzuki, Minoru Wada, Ryousuke Fujii, Koichi Magai, Tomohiro Kimura
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Publication number: 20060236130Abstract: An encoded data modification device and the like are obtained which are capable of modifying a signal with a small delay. There is provided the encoded data modification device, including: an operational buffer that stores inputted encoded data formed of a plurality of encoded units; a decoder circuit that decodes the encoded data stored in the operational buffer; a modification circuit that modifies a first encoded unit of the decoded data and modifies following decoded encoded units according to the modification; an encoder circuit that re-encodes the modified data; an operational circuit that judges whether the modification is contained in the data in the buffer; and a write control circuit that rewrites the encoded data stored in the operational buffer to the data modified by the modification circuit and re-encoded by the encoder circuit when the operational circuit judges that the modification is contained in the data in the buffer.Type: ApplicationFiled: July 20, 2005Publication date: October 19, 2006Inventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki, Shigenori Takai
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Publication number: 20060232689Abstract: To obtain a noise eliminating device which is capable of efficiently separating a noise component from an image component to attenuate only the noise component.Type: ApplicationFiled: September 2, 2005Publication date: October 19, 2006Inventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki