Patents by Inventor Satoshi Naito

Satoshi Naito 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).

  • Patent number: 8300939
    Abstract: Every time clustering processing for a predetermined number of pixels is complete, a small cluster having the number of allocated pixels, which is equal to or smaller than a pixel count threshold, is discriminated. The small cluster, which is discriminated to have the number of allocated pixels equal to or smaller than the pixel count threshold, is merged to a cluster having the nearest representative feature vector. With this arrangement, the number of clusters which are to undergo distance calculations of feature vectors is reduced. According to this arrangement, region segmentation of an image can be executed faster by the clustering processing.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: October 30, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Patent number: 8290255
    Abstract: A clustering unit first calculates a distance between a feature vector of a processing object pixel and a representative feature vector of a cluster to which a pixel with a high probability of belonging to the same cluster as the processing object pixel such as a nearby pixel of the processing object pixel belongs. When the calculated distance is less than or equal to a first threshold, the processing object pixel is allocated to a cluster to which the nearby pixel or a background image belongs.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: October 16, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Patent number: 8208743
    Abstract: An apparatus and method enables effectively executing decoding processing in units of blocks based on encoded image data that has been variable-length encoded in units of blocks and furthermore has marker code inserted therein. An identification unit generates information indicating the position of an emulation prevention byte and deletes the emulation prevention byte. A code length calculation unit outputs a code length of the encoded image data from which the identification data has been deleted. A code length accumulation unit determines, based on the identification data position information, whether identification data was included in the encoded image data that has been decoded, and accumulates the code lengths of encoded data and outputs the accumulated code length in units of blocks. Based on this, storage address information for encoded data in blocks in the encoded image data is registered in a decoding table which is used for performing in units of blocks.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Patent number: 8175407
    Abstract: A clustering unit calculates, for clusters in a descending order of the number of pixels belonging thereto, a distance from a feature vector of a processing object pixel and a representative feature vector of an object cluster, and compares the distance with a first threshold. The processing object pixel is stored in a memory or the like as a pixel belonging to an object cluster when the distance is determined to be less than or equal to the first threshold.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: May 8, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Okawa, Satoshi Naito
  • Publication number: 20110317927
    Abstract: A clustering processing apparatus comprises: N clustering units that group samples included in the data block into clusters, each clustering unit sequentially taking each sample as a target, grouping the target sample into one of the clusters within the data block, storing cluster information including identification on each cluster into which the samples are grouped within the data block, and storing sample assignment information indicating the cluster to which the target sample belongs; a cluster information transferring unit that selects cluster information on a cluster to be integrated from the cluster information when a predetermined condition is met, and transfers the selected cluster information to a third storage unit; and an updating unit that integrates clusters selected based on the cluster information stored in the third storage unit into an integrated cluster, and updates the sample assignment information based on information of the integrated clusters.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 29, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Satoshi Naito
  • Patent number: 7999853
    Abstract: Disclosed is a moving image reproducing apparatus including a reproduction control unit. The moving image reproducing apparatus sequentially transfers at least part of moving image data elements stored in an incorporated memory to an external storage device, stating from a moving image data element to be reproduced last by the reproduction control unit.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: August 16, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Naito, Toshihiko Fukasawa, Mamoru Sato, Yukio Chiba
  • Publication number: 20110019928
    Abstract: Every time clustering processing for a predetermined number of pixels is complete, a small cluster having the number of allocated pixels, which is equal to or smaller than a pixel count threshold, is discriminated. The small cluster, which is discriminated to have the number of allocated pixels equal to or smaller than the pixel count threshold, is merged to a cluster having the nearest representative feature vector. With this arrangement, the number of clusters which are to undergo distance calculations of feature vectors is reduced. According to this arrangement, region segmentation of an image can be executed faster by the clustering processing.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 27, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Satoshi Naito
  • Publication number: 20100202686
    Abstract: A clustering unit calculates, for clusters in a descending order of the number of pixels belonging thereto, a distance from a feature vector of a processing object pixel and a representative feature vector of an object cluster, and compares the distance with a first threshold. The processing object pixel is stored in a memory or the like as a pixel belonging to an object cluster when the distance is judged to be less than or equal to the first threshold.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 12, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koji Okawa, Satoshi Naito
  • Publication number: 20100202685
    Abstract: A clustering unit first calculates a distance between a feature vector of a processing object pixel and a representative feature vector of a cluster to which a pixel with a high probability of belonging to the same cluster as the processing object pixel such as a nearby pixel of the processing object pixel belongs. When the calculated distance is less than or equal to a first threshold, the processing object pixel is allocated to a cluster to which the nearby pixel or a background image belongs.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 12, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Satoshi Naito
  • Publication number: 20090257667
    Abstract: The invention enables effectively executing decoding processing in units of blocks based on encoded image data that has been variable-length encoded in units of blocks and furthermore has marker code inserted therein. An identification unit generates information indicating the position of an emulation prevention byte and deletes the emulation prevention byte. A code length calculation unit outputs a code length of the encoded image data from which the identification data has been deleted. A code length accumulation unit determines, based on the identification data position information, whether identification data was included in the encoded image data that has been decoded, and accumulates the code lengths of encoded data and outputs the accumulated code length in units of blocks. Based on this, storage address information for encoded data in blocks in the encoded image data is registered in a decoding table which is used for performing in units of blocks.
    Type: Application
    Filed: March 24, 2009
    Publication date: October 15, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Satoshi Naito
  • Publication number: 20090096893
    Abstract: Disclosed is a moving image reproducing apparatus including a reproduction control unit. The moving image reproducing apparatus sequentially transfers at least part of moving image data elements stored in an incorporated memory to an external storage device, stating from a moving image data element to be reproduced last by the reproduction control unit.
    Type: Application
    Filed: October 6, 2008
    Publication date: April 16, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Naito, Toshihiko Fukasawa, Mamoru Sato, Yukio Chiba
  • Patent number: 7215818
    Abstract: An image compression coding apparatus which can obtain coded data with minimum coding distortion within an allowable compression ratio range while minimizing a deterioration in the performance of a system, and a control method for the apparatus.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: May 8, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Patent number: 7161509
    Abstract: There are provided a variable-length code decoding apparatus and method which can perform high-speed decoding processing without decreasing an image size and frame rate. A variable-length code decoding apparatus of this invention decodes a variable-length code containing a prefix and a suffix. This apparatus includes a prefix decoding unit which decodes the prefix of an input variable-length code and outputs a symbol and prefix length corresponding to the prefix, a suffix shifter unit which supplies the suffix on the basis of the prefix length output from the prefix decoding unit, and a symbol decoding unit which decodes a symbol corresponding to a variable-length code on the basis of the symbol corresponding to the prefix which is output from the prefix decoding unit, the suffix supplied by the suffix shifter unit, and a suffix length acquired in advance.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: January 9, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Patent number: 7106909
    Abstract: An encoder (103) encodes image data using a first parameter Q1, and a re-encoder (107) re-encodes the encoded result of the encoder (103) using a second parameter Q2. When the encoded data size obtained by the encoder (103) exceeds a predetermined size, Q1 is replaced by Q2, and encoded data streams previously encoded by the re-encoder (107) are saved in a buffer (108) as those encoded by the encoder (103) after the parameter is changed. Upon executing a re-encoding process, the re-encoder (107) re-encodes encoded data streams previously encoded by the re-encoder (107) using a parameter that can assure a higher compression ratio than Q2.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: September 12, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Satoh, Yukio Chiba, Satoshi Naito
  • Publication number: 20060109150
    Abstract: There are provided a variable-length code decoding apparatus and method which can perform high-speed decoding processing without decreasing an image size and frame rate. A variable-length code decoding apparatus of this invention decodes a variable-length code containing a prefix and a suffix. This apparatus includes a prefix decoding unit which decodes the prefix of an input variable-length code and outputs a symbol and prefix length corresponding to the prefix, a suffix shifter unit which supplies the suffix on the basis of the prefix length output from the prefix decoding unit, and a symbol decoding unit which decodes a symbol corresponding to a variable-length code on the basis of the symbol corresponding to the prefix which is output from the prefix decoding unit, the suffix supplied by the suffix shifter unit, and a suffix length acquired in advance.
    Type: Application
    Filed: November 21, 2005
    Publication date: May 25, 2006
    Inventor: Satoshi Naito
  • Publication number: 20030169934
    Abstract: There are provided an image compression coding apparatus which can obtain a coded data with minimum coding distortion within an allowable compression ratio range while minimizing a deterioration in the performance of a system, and a control method for the apparatus. A block formation unit (11) divides image data into blocks each having a predetermined size. A compression coding unit (14) compression-codes the image data on a block basis at a plurality of compression ratios. A data amount accumulation unit (15) calculates the cumulative data amounts of coded data generated at the respective compression ratios. A total coded data amount upper limit is set in an upper limit setting unit (12). A control unit (17) aborts compression coding processing for image data at a compression ratio at which the cumulative data amount exceeds the upper limit.
    Type: Application
    Filed: March 6, 2003
    Publication date: September 11, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventor: Satoshi Naito
  • Publication number: 20030118240
    Abstract: An encoder (103) encodes image data using a first parameter Q1, and a re-encoder (107) re-encodes the encoded result of the encoder (103) using a second parameter Q2. When the encoded data size obtained by the encoder (103) exceeds a predetermined size, Q1 is replaced by Q2, and encoded data streams previously encoded by the re-encoder (107) are saved in a buffer (108) as those encoded by the encoder (103) after the parameter is changed. Upon executing a re-encoding process, the re-encoder (107) re-encodes encoded data streams previously encoded by the re-encoder (107) using a parameter that can assure a higher compression ratio than Q2.
    Type: Application
    Filed: November 19, 2002
    Publication date: June 26, 2003
    Inventors: Makoto Satoh, Yukio Chiba, Satoshi Naito
  • Patent number: 4014183
    Abstract: An absorption refrigerator of natural circulation type comprising a first generator connected to the lower end of a gas-liquid lift and a second generator connected to the upper end of the gas-liquid lift. A solution of an absorbing medium, which may be an aqueous solution of a salt of lithium, is heated in the first generator to be lifted through the gas-liquid lift into the second generator, and the lithium salt solution is then concentrated to a predetermined concentration in the second generator.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: March 29, 1977
    Assignee: Yazaki Sogyo Kabushiki Kaisha
    Inventors: Toshihiro Ishibashi, Satoshi Naito
  • Patent number: 3978683
    Abstract: An absorption refrigerator of natural circulation type employing water as a refrigerant and lithium salt as an absorbing medium, in which a U-tube is disposed in a conduit portion between a condenser and an evaporator and is connected at one end thereof to a separator in addition to the condenser and at the other end thereof to a refrigerant reservoir. A cooling conduit extends into this refrigerant reservoir to maintain substantially constant the internal pressure of the reservoir so that the amount of the refrigerant stored in the reservoir can be controlled depending on the pressure difference between the separator side of the U-tube and the reservoir side of the U-tube. Therefore, the concentration of the lithium salt solution circulating through the refrigeration system can be controlled depending on the temperature of a heating medium supplied to a generator.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: September 7, 1976
    Assignee: Yazaki Sogyo Kabushiki Kaisha
    Inventor: Satoshi Naito