Patents by Inventor Nobushige Wakamatsu

Nobushige Wakamatsu 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: 9692962
    Abstract: A control device configured to track a subject by controlling a correcting lens so that the subject is moved to a target position of a photographed image. The control device performs feedback control so that a difference between a position of the subject and a target position of the subject in the photographed image becomes small. The control device detects a photographing condition and changes a degree of tracking of the subject by changing a control gain in the feedback control based on the detected photographing condition.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: June 27, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Publication number: 20170163894
    Abstract: A control device includes: a correction control unit configured to acquire a blur detection signal detected by a blur detection unit to calculate a correction amount of an image blur and control an image blur correction unit configured to correct the image blur; a subject detection unit configured to detect a position of a subject in a photographed image and acquire position information of the subject in the photographed image; a tracking control unit configured to perform tracking control of the subject based on the position information of the subject acquired by the subject detection unit to; and a setting unit configured to set a control state of the tracking control unit. The setting unit sets the control state of the tracking control unit by selecting the set control state from a plurality of control states including a first state in which a tracking subject selectable mode is not set and a second state in which the mode is set and a tracking subject is not selected.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 8, 2017
    Inventor: Nobushige Wakamatsu
  • Publication number: 20170163879
    Abstract: A subject tracking apparatus is configured to track a subject in continuously obtained photographic images. In the photographic image, a position of the subject in the photographic image and reliability that represents subject probability are obtained. The position of the subject to a target position in the photographic image is moved a tracking state of the subject is changed on a basis of the reliability.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 8, 2017
    Inventors: Ryosuke Tsuji, Nobushige Wakamatsu
  • Publication number: 20170155841
    Abstract: In an image-shake correction apparatus, if distortion is generated such that a screen peripheral portion of an image pickup screen of an image pickup element is reduced as compared with a screen center portion of the image pickup screen and if distortion is generated such that the screen center portion is reduced as compared with the screen peripheral portion, image-shake correction effect in the screen center portion is higher than image-shake correction effect in the screen peripheral portion.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Inventor: Nobushige Wakamatsu
  • Publication number: 20170134649
    Abstract: An imaging device includes a subject detecting unit configured to detect a subject image from a captured image captured by an imaging element; a motion vector acquiring unit configured to acquire a motion vector of the subject image detected by the subject detecting unit, by comparing image signals in different frames acquired by the imaging element; a comparison unit configured to acquire a comparison result, by comparing a position of the subject image detected by the subject detecting unit with a predetermined position; and a moving unit configured to reduce movement of the position of the subject image in the imaging range, by moving the subject image on the basis of the motion vector and the comparison result.
    Type: Application
    Filed: October 20, 2016
    Publication date: May 11, 2017
    Inventor: Nobushige Wakamatsu
  • Patent number: 9609218
    Abstract: In an image-shake correction apparatus, if distortion is generated such that a screen peripheral portion of an image pickup screen of an image pickup element is reduced as compared with a screen center portion of the image pickup screen and if distortion is generated such that the screen center portion is reduced as compared with the screen peripheral portion, image-shake correction effect in the screen center portion is higher than image-shake correction effect in the screen peripheral portion.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: March 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Publication number: 20170078577
    Abstract: A tilt correction apparatus includes a manipulation unit configured to designate a level of an effect of first tilt correction of an imaging apparatus having an optical axis as a rotary axis and a level of an effect of second tilt correction of the imaging apparatus having an axis orthogonal to the optical axis as a rotary axis, an electronic correction unit configured to execute at least one of the first tilt correction and the second tilt correction by moving an image clipping range set within an imaging screen, and a calculation unit configured to vary a ratio of a first tilt-correctable range and a ratio of a second tilt-correctable range from the electronic correction unit according to the level of the effect of the first tilt correction and the level of the effect of the second tilt correction.
    Type: Application
    Filed: September 13, 2016
    Publication date: March 16, 2017
    Inventor: Nobushige Wakamatsu
  • Patent number: 9513492
    Abstract: An shake correction apparatus includes a correcting unit configured to optically correct an image shake based on an output of a shake detecting unit; a moving member configured to hold the correcting unit; and a control unit configured to perform initialization driving of the correcting unit by driving the moving member during a start-up of the shake correction apparatus. The control unit converts at least one of a driving amplitude and a driving speed of the initialization driving of the moving member in response to the start-up mode of the shake correction apparatus.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: December 6, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Publication number: 20160316123
    Abstract: A control device configured to track a subject by controlling a correcting lens so that the subject is moved to a target position of a photographed image. The control device performs feedback control so that a difference between a position of the subject and a target position of the subject in the photographed image becomes small. The control device detects a photographing condition and changes a degree of tracking of the subject by changing a control gain in the feedback control based on the detected photographing condition.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 27, 2016
    Inventor: Nobushige Wakamatsu
  • Publication number: 20160316137
    Abstract: A control device configured to track a subject by controlling a correcting lens so that the subject is moved to a target position of a photographed image. The control device performs feedback control so that a difference between a position of the subject and a target position of the subject in the photographed image becomes small. The control device detects a photographing condition and changes a degree of tracking of the subject by changing a control gain in the feedback control based on the detected photographing condition.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 27, 2016
    Inventor: Nobushige Wakamatsu
  • Publication number: 20160255273
    Abstract: A control apparatus includes a first angle calculating unit configured to calculate a first angle based on an acceleration detected by an acceleration detector, an analyzing unit configured to analyze a vibration state based on at least one of the acceleration and an angular velocity detected by an angular velocity detector, a second angle calculating unit configured to calculate a second angle based on the angular velocity, the first angle, and the vibration state, and a correcting unit configured to perform tilt correction based on the second angle.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 1, 2016
    Inventor: Nobushige Wakamatsu
  • Patent number: 9374531
    Abstract: An image shake correcting apparatus includes a calculating unit that calculates an image shake correction amount by acquiring a shake detection signal output from a shake detecting unit. A shake correcting unit corrects an image shake in accordance with the calculated image shake correction amount. An offset removing unit removes an offset component from the shake detection signal. A reference value calculating unit calculates an offset reference value from the shake detection signal. The calculating unit causes the offset removing unit to remove an offset component from the shake detection signal to thereby calculate the image shake correction amount from a start of an operation of the shake detecting unit until the reference value calculating unit calculates the offset reference value, and the calculating unit calculates the image shake correction amount from a signal obtained by subtracting the offset reference value from the shake detection signal.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: June 21, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Nobushige Wakamatsu
  • Publication number: 20150358545
    Abstract: In an image-shake correction apparatus, if distortion is generated such that a screen peripheral portion of an image pickup screen of an image pickup element is reduced as compared with a screen center portion of the image pickup screen and if distortion is generated such that the screen center portion is reduced as compared with the screen peripheral portion, image-shake correction effect in the screen center portion is higher than image-shake correction effect in the screen peripheral portion.
    Type: Application
    Filed: June 8, 2015
    Publication date: December 10, 2015
    Inventor: Nobushige Wakamatsu
  • Publication number: 20150160469
    Abstract: An shake correction apparatus includes a correcting unit configured to optically correct an image shake based on an output of a shake detecting unit; a moving member configured to hold the correcting unit; and a control unit configured to perform initialization driving of the correcting unit by driving the moving member during a start-up of the shake correction apparatus. The control unit converts at least one of a driving amplitude and a driving speed of the initialization driving of the moving member in response to the start-up mode of the shake correction apparatus.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 11, 2015
    Inventor: Nobushige Wakamatsu
  • Patent number: 9055224
    Abstract: An image capturing apparatus detects the angular rotational shake and translational shake generated in the apparatus using an angular velocity sensor and an accelerometer. An angular rotational shake correction coefficient calculation unit calculates a first correction coefficient using a zoom lens position and a focus lens position. A translational shake correction coefficient calculation unit calculates a second correction coefficient using the imaging magnification of an imaging optical system.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: June 9, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Nobushige Wakamatsu
  • Patent number: 9031396
    Abstract: The CPU acquires the output of an angular velocity sensor and performs image shake correction. An angle 1 calculating unit integrates a signal from which an offset component is removed to calculate an angle 1. An angular velocity subtraction amount calculating unit calculates an angular velocity subtraction amount based on a signal obtained by subtracting a first offset from the output of the angular velocity sensor and a signal obtained by subtracting a second offset from the output of the angle 2 calculating unit. An angle 2 calculating unit integrates a signal obtained by subtracting the angular velocity subtraction amount from the output of the angular velocity sensor to calculate an angle 2. The CPU performs image shake correction based on the angle 1 prior to operation of a release SW, whereas the CPU performs image shake correction based on the angle 2 after operation of the release SW.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 12, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Patent number: 8971696
    Abstract: A rotational shake compensation calculation unit in an image capturing apparatus calculates rotational shake produced by apparatus rotation about an axis orthogonal to an optical axis of an imaging optical system, thereby calculating a compensation amount for image shake. A translational shake compensation calculation unit calculates a compensation amount for image shake resulting from translational shake produced in a travel direction of the apparatus along a direction orthogonal to an optical axis of the optical system. An estimating device estimates translational shake using a vibration model. A translational shake compensation amount calculation unit calculates a translation shake compensation amount based on the estimation amount and varies the translation shake compensation amount in response to the compensation range of the shake compensation unit of the focal distance of the optical system.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Patent number: 8965191
    Abstract: A shake compensation apparatus includes a shake compensation unit configured to compensate the shake by moving non-parallel to an optical axis; a driving unit configured to drive the shake compensation unit based on a drive indication signal; a position detection unit configured to detect the position of the shake compensation unit to output a position detection signal; and a compensation amount calculation unit configured to detect translational shake component in the shake of the apparatus from the movement of the shake compensation unit such that the drive indication signal and the position detection signal serve as input, and calculate the compensation amount of the shake compensation unit from the shake amount of the apparatus including the translational shake component to output it as a drive indication signal.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Patent number: 8965188
    Abstract: A shake correction apparatus comprises a shake detection unit which detects a shake of an image capture apparatus, a calculation unit which calculates a shake correction amount for correcting an image blur based on an output from the shake detection unit, a shake correction unit which corrects the image blur based on the shake correction amount, a shake level determination unit which determines a shake level of the image capture apparatus based on an output from the shake detection unit, an offset determination unit which determines an offset value based on the shake correction amount and the shake level, and a subtraction unit which subtracts the offset value from the output from the shake detection unit.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobushige Wakamatsu
  • Publication number: 20150042828
    Abstract: An imaging apparatus is provided with an angular velocity meter for detecting angular shake and an acceleration meter for detecting translational shake. A CPU calculates an image shake correction amount based on a shake detection signal. A shake correction unit corrects image shake by driving a correcting member according to a calculated image shake correction amount. An imaging magnification calculation unit calculates an imaging magnification of an imaging lens, and outputs it to a signal switching unit. The signal switching unit switches between an output of an integration filter and an output of an HPF according to a size of the imaging magnification. The CPU performs image shake correction by changing following properties of a low-frequency range of a correcting filter, and by calculating an image shake correction amount.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 12, 2015
    Inventor: Nobushige Wakamatsu