Patents by Inventor Takashi Kitaguchi

Takashi Kitaguchi 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: 7889153
    Abstract: A projection surface on which a predetermined projection image is projected is provided; a writing surface on which an image can be drawn directly in a superimposing manner with a projection image displayed on the projection surface is provided; and a photography part photographing an image drawn on the writing surface by means of an image-pickup part comprising two-dimensionally-disposed pixels is provided.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: February 15, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Tomofumi Kitazawa, Saburo Sasaki
  • Patent number: 7428007
    Abstract: An image pickup apparatus for picking up an image of a target object in divisions as a plurality of partial images which overlap by a predetermined quantity, is provided with a field angle setting unit configured to set a field angle with which the target object is to be picked up, a display unit for displaying an image, and an image generating unit for generating the partial images to be displayed on the display unit by dividing an image of the target object which is picked up with the field angle.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: September 23, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Norihiko Murata, Shin Aoki
  • Patent number: 7324134
    Abstract: An apparatus for detecting a deviation of a camera as a result of a shaking. The apparatus includes a shaking detector which detects a deviation of the camera from shaking based upon an output of at least two pairs of acceleration sensors which are located on different axes of the camera coordinates. A calculator calculates tilt angles of each of the axes from outputs of the pairs of the acceleration sensors.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: January 29, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Patent number: 7313289
    Abstract: In image processing method and apparatus of the present invention, image distortions caused by oblique imaging are corrected. A feature point of one of a plurality of partially overlapping images corresponding to a common location of an original image, shared by the plurality of partially overlapping images, is determined. A matched point of one of the other partially overlapping images corresponding to the feature point is determined so that a direction of the object plane is calculated based on the feature point and the matched point. One of the plurality of partially overlapping images is selected as a standard image whose image distortions are to be corrected. A distortion-corrected image is generated on a projection plane by projecting the standard image onto the projection plane based on the direction of the object plane such that image distortions in the standard image are eliminated.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: December 25, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Norihiko Murata, Takashi Kitaguchi, Shin Aoki
  • Patent number: 7310154
    Abstract: An image capturing apparatus for capturing an image of an object. The image capturing apparatus includes a correspondence detector which detects a correspondence of characteristic points of an object based upon captured images of the object. A motion detector detects a motion of the image capturing device. The motion detector includes magnetic sensors. Further, a shape calculator calculates a shape of the object based upon the captured image data, captured attitude information, a translation component, and the correspondence of the characteristic points. The motion detector may further include acceleration sensors and angle speed sensors. A disturbance detector may further be provided to detect a disturbance in acceleration signals output by the acceleration sensors and a disturbance in magnetic signals output by the magnetic sensors.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: December 18, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Norihiko Murata
  • Patent number: 7268803
    Abstract: In image processing method and apparatus of the present invention, an image distortion caused by an oblique image pickup is corrected. A plurality of images of an object on an object plane are input, the plurality of images including at least a pair of partially overlapping first and second images that are taken at two viewpoints, the first and second images sharing a common location on the object plane. A feature point of the first image corresponding to the common location and a matched point of the second image corresponding to the feature point of the first image are determined. A direction of the object plane is calculated based on the feature point and the matched point. A distortion-corrected image on a projection plane, which is parallel to the object plane, is generated by projecting one of the first and second images onto the projection plane based on the direction of the object plane through a perspective projection.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: September 11, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Norihiko Murata, Takashi Kitaguchi, Shin Aoki
  • Patent number: 7176890
    Abstract: A projection surface on which a predetermined projection image is projected is provided; a writing surface on which an image can be drawn directly in a superimposing manner with a projection image displayed on the projection surface is provided; and a photography part photographing an image drawn on the writing surface by means of an image-pickup part comprising two-dimensionally-disposed pixels is provided.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: February 13, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Tomofumi Kitazawa, Saburo Sasaki
  • Publication number: 20070008303
    Abstract: A projection surface on which a predetermined projection image is projected is provided; a writing surface on which an image can be drawn directly in a superimposing manner with a projection image displayed on the projection surface is provided; and a photography part photographing an image drawn on the writing surface by means of an image-pickup part comprising two-dimensionally-disposed pixels is provided.
    Type: Application
    Filed: September 14, 2006
    Publication date: January 11, 2007
    Inventors: Takashi Kitaguchi, Tomofumi Kitazawa, Saburo Sasaki
  • Patent number: 7145596
    Abstract: The image input apparatus comprises the image pickup unit which optically scans a subject and successively acquires partial images of the subject. The relative change detection unit detects an amount of relative change in position or speed of the image pickup unit between a time when a previous partial image was taken and a time when a current partial image is being taken. The an overlapping amount calculating unit calculates an amount of overlap between the previous partial image and the current partial image based upon the amount of relative change in position or speed detected by the relative change detection unit. The image recording determination unit determines whether or not the current partial image is to be recorded based upon the amount of overlap calculated by the overlapping amount calculating unit.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: December 5, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Norihiko Murata, Shin Aoki, Saburoh Sasaki
  • Patent number: 7001024
    Abstract: The present invention provides an image input apparatus into which a three-dimensional image as well as a two-dimensional image can be easily input. This image input apparatus includes an image pick-up unit, a projector unit, and a mover unit. The projector unit projects a predetermined projection light pattern onto an image object, and the image pick-up unit picks up the projection image containing distortions of the projection light pattern. The relative position between the projector unit and the image pick-up unit is fixed. The mover unit moves the image pick-up unit relatively with the projector unit, so that the image pick-up unit can pick up a plurality of projection images at different image pick-up locations.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: February 21, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Yasuhiro Sato, Tomofumi Kitazawa, Shin Aoki, Takefumi Hasegawa
  • Patent number: 6992700
    Abstract: An apparatus for detecting a deviation of a camera as a result of the camera shaking, for example resulting from a hand of the camera operator shaking. The apparatus includes a shaking detector which detects a deviation of the camera from shaking based upon an output of angular velocity sensors which are located on different axes of the camera coordinates. A calculator calculates tilt angles of each of the coordinate axes from outputs of the angular velocity sensors. The rotation regulator rotates an image pickup device around an optical axis of the camera or an axis in parallel with the optical axis.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: January 31, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Publication number: 20050243197
    Abstract: An image pickup apparatus for picking up an image of a target object in divisions as a plurality of partial images which overlap by a predetermined quantity, is provided with a field angle setting unit configured to set a field angle with which the target object is to be picked up, a display unit for displaying an image, and an image generating unit for generating the partial images to be displayed on the display unit by dividing an image of the target object which is picked up with the field angle.
    Type: Application
    Filed: July 8, 2005
    Publication date: November 3, 2005
    Inventors: Takashi Kitaguchi, Norihiko Murata, Shin Aoki
  • Patent number: 6947076
    Abstract: An image pickup apparatus for picking up an image of a target object in divisions as a plurality of partial images which overlap by a predetermined quantity, is provided with a display unit for displaying an image, and a partial image generating unit for generating the partial images to be displayed on the display unit by dividing a full image of the target image which is picked up in advance into predetermined sizes using information related to an overlap of the partial images.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: September 20, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kitaguchi, Norihiko Murata, Shin Aoki
  • Patent number: 6940542
    Abstract: Detection information for shake is detected by a shake detection unit, predictive shake information is calculated based on the shake detection information, a start position (center) of a correcting operation on an imaging surface of a shake correction unit is determined, and driving of the shake correction unit at the correcting-operation start position is controlled. Accordingly, it is possible to make effective use of a movable range of the shake correction unit for actual hand shake or the like. Thus, a high degree of correction effect can be obtained, so that imaging failures due to hand shake or the like can be remarkably reduced.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: September 6, 2005
    Assignee: Ricoh Company, LTD
    Inventors: Tomofumi Kitazawa, Takashi Kitaguchi, Hiromasa Shimizu, Masayoshi Katoh, Yasuhiro Sato, Saburoh Sasaki, Akihiro Etoh
  • Patent number: 6930708
    Abstract: A detecting system for detecting a deviation of a camera from shaking has at least two shaking detectors and one correcting device. The first shaking detector detects a camera shaking corresponding to one axis of a camera coordinate system. The second shaking detector detects a camera shaking corresponding to another axis of the camera coordinate system. The correcting device only adjusts a device corresponding to the first shaking detector in an optical system when a maximum or minimum value is detected on the output signal from the second shaking detector.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: August 16, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Publication number: 20050168587
    Abstract: A detecting system for detecting a deviation of a camera from shaking has at least two shaking detectors and one correcting device. The first shaking detector detects a camera shaking corresponding to one axis of a camera coordinate system. The second shaking detector detects a camera shaking corresponding to another axis of the camera coordinate system. The correcting device only adjusts a device corresponding to the first shaking detector in an optical system when a maximum or minimum value is detected on the output signal from the second shaking detector.
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Publication number: 20050001906
    Abstract: An apparatus for detecting a deviation of a camera as a result of a shaking. The apparatus includes a shaking detector which detects a deviation of the camera from shaking based upon an output of at least two pairs of acceleration sensors which are located on different axes of the camera coordinates. A calculator calculates tilt angles of each of the axes from outputs of the pairs of the acceleration sensors.
    Type: Application
    Filed: August 3, 2004
    Publication date: January 6, 2005
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Patent number: 6781622
    Abstract: An apparatus for detecting a deviation of a camera as a result of a shaking. The apparatus includes a shaking detector which detects a deviation of the camera from shaking based upon an output of at least two pairs of acceleration sensors which are located on different axes of the camera coordinates. A calculator calculates tilt angles of each of the axes from outputs of the pairs of the acceleration sensors.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: August 24, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Sato, Takashi Kitaguchi
  • Publication number: 20040119836
    Abstract: An apparatus and a method for correction of a deviation of an imaging sensor of a digital camera in which an image of an object or a scene is formed on an image plane of the imaging sensor to output an image signal, are disclosed. A quantity of rotation of the digital camera causing a deviation of the imaging sensor from a reference position to occur, is detected. A change of a positional angle of the imaging sensor is calculated based on the detected rotation quantity. A target vector is calculated based on the calculated positional angle change, the target vector describing a magnitude and a direction of an inverse movement of the imaging sensor needed to reach the reference position and cancel the deviation. Movement of the imaging sensor is controlled based on the calculated target vector, so that the imaging sensor is moved back to the reference position thus correcting the deviation.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 24, 2004
    Inventors: Takashi Kitaguchi, Yasuhiro Sato, Norihiko Murata
  • Patent number: 6700604
    Abstract: An image capturing apparatus for capturing an image of an object. The image capturing apparatus includes a correspondence detector which detects a correspondence of characteristic points of an object based upon captured images of the object. A motion detector detects a motion of the image capturing device. The motion detector includes magnetic sensors. Further, a shape calculator calculates a shape of the object based upon the captured image data, captured attitude information, a translation component, and the correspondence of the characteristic points. The motion detector may further include acceleration sensors and angle speed sensors. A disturbance detector may further be provided to detect a disturbance in acceleration signals output by the acceleration sensors and a disturbance in magnetic signals output by the magnetic sensors.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: March 2, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Norihiko Murata, Takashi Kitaguchi