Patents by Inventor Hidetoshi Tsubaki

Hidetoshi Tsubaki 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).

  • Publication number: 20160044245
    Abstract: An image processing apparatus comprises a detection unit configured to detect a main subject from an image captured by an image sensor that captures a subject image, a position detection unit configured to detect a position, on a screen, of the main subject, and a correction unit configured to correct, based on the position of the main subject detected by the detection unit, at least one of a blur and a distortion of an image of a subject other than the main subject, the blur and the distortion occurring due to correction of a blur of an image of the main subject performed by an optical image stabilization unit configured to optically correct a blur, on the screen, of the image of the main subject.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 11, 2016
    Inventor: Hidetoshi Tsubaki
  • Patent number: 9258484
    Abstract: An image pickup apparatus performs image shake correction by driving a correction member which is movable for image shake correction. An image sensing device receives light focused by an imaging optical system and then photoelectrically converts the optical image into an image signal so as to output the image signal. An attitude sensor unit detects the attitude of the image pickup apparatus, and a drive control unit performs drive control of the correction member and position detection. A geometric deformation amount calculating unit decomposes distortion of an image into a first distortion component which varies due to the driving of the correction member and a second distortion component which does not vary due to the driving of the correction member so as to calculate correction values for the first and second distortion components. An image processing unit corrects the first and second distortion components by image processing based on the calculated correction values.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: February 9, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20150326785
    Abstract: A first anti-shake unit included in an image processing apparatus executes an anti-shake process for image data relating to a captured image and records image data after the anti-shake process on a recording unit. Also, a second anti-shake unit executes a re-anti-shake process while performing a control process of removing influence of the anti-shake process executed by the first anti-shake unit on the image data after the anti-shake process recorded on the recording unit based on auxiliary information regarding the anti-shake process output by the first anti-shake unit.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 12, 2015
    Inventor: Hidetoshi Tsubaki
  • Patent number: 9148578
    Abstract: The number of images to be composited used to generate a dynamic range-extended image, and exposure conditions for respective images to be composited are determined. A proper exposure condition is determined for a subject corresponding to a moving object region, and one of the exposure conditions of the images to be composited is changed to the proper exposure condition. An image capture apparatus specifies a moving object region for a plurality of images to be composited, which are captured under the exposure conditions of the images to be composited including the proper exposure condition. A dynamic range-extended image is generated using pixels of the image to be composited, which is captured under the proper exposure condition, as those of the moving object region, which is specified for the plurality of images to be composited.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: September 29, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hidetoshi Tsubaki
  • Patent number: 9124807
    Abstract: There is provided an imaging apparatus capable of reducing a margin region required for rolling shutter distortion correction processing. The imaging apparatus includes an imaging unit employing a rolling shutter method, and a correction unit configured to perform correction processing for reducing a rolling shutter distortion on image data captured by the imaging unit. The correction unit adjusts readout positions of other lines relative to a readout position of a reference line in the image data, and sets the reference line so as to reduce a deviation amount between the readout position of the reference line and the readout positions of the other lines.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: September 1, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetoshi Tsubaki
  • Patent number: 9088718
    Abstract: An imaging apparatus includes a first image shake correcting unit for correcting image shake and moves a correction lens in a direction perpendicular to the optical axis using detection information obtained by an attitude detection sensor. In a second image shake correcting unit, a translational motion detecting unit acquires information about an image captured by an imaging element from a pre-processing unit so as to detect the motion of the image in the translational direction. An in-plane rotational motion detecting unit detects the motion of the image in the rotational direction about the optical axis. A geometric deforming unit acquires detection information from the translational motion detecting unit and the in-plane rotational motion detecting unit so as to correct the image shake of the corrected image, which occurs when the image is subject to rotational correction based on the detection information obtained from the in-plane rotational motion detecting unit.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20150138380
    Abstract: An image pickup apparatus capable of detecting a motion vector and selecting a vector search method which enables effects to be always obtained in various usages of a camera, taking into account load balancing with the performance. One input image is set as a reference image, and the other input image is set as a search target image. Using a template having a predetermined size on the reference image, a motion vector is detected from the search target image. A determination index associated with frequency of occurrence of parallax conflict is calculated. When the determination index is not larger than a threshold value, a first detection method using a single layer is selected, whereas when the determination index is larger than the threshold value, a second detection method using a plurality of layers is selected.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventor: Hidetoshi TSUBAKI
  • Publication number: 20150085149
    Abstract: An amount of change between images is calculated based on a motion vector between images obtained by an image sensor and on shake information related to a shake in a rotational direction around at least an axis perpendicular to an optical axis of an imaging optical system. Then, based on a shake correction amount determined based on the shake information and the amount of change, an image obtained by the image sensor is geometrically deformed. The amount of change is a shake component of the image capture apparatus in a direction perpendicular to the optical axis, and is calculated after cancelling at least one of a change between images caused by the shake in the rotational direction included in the shake information and a change between images caused by an influence of a difference between exposure periods of the image sensor.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventor: Hidetoshi Tsubaki
  • Patent number: 8953053
    Abstract: An image processing apparatus of the present invention includes a shake detector 109 which detects a shake of an image pickup apparatus, a shake analyzer 112 which obtains features of a plurality of shake components whose kinds are different from each other, a parameter calculator 113 which calculates a filtering process parameter depending on the features for each of the shake components, and a processor 114 which performs a filtering process using the filtering process parameter calculated for each of the shake components to calculate a shake reduction amount and performs a shake reduction process based on the shake reduction amount with respect to the image.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuhiro Saito, Takahiro Takahashi, Hidetoshi Tsubaki
  • Publication number: 20150022678
    Abstract: An image capture apparatus has an image sensor and an optical anti-shake mechanism that reduces a shake of a captured image by driving an optical correction element in a different direction from an optical axis of an imaging optical system in accordance with a detected shake. Reference coordinates for geometric deformation processing applied to the captured image are determined based on an amount and direction of a movement of the optical correction element. The geometric deformation processing is applied to the captured image using these reference coordinates and an amount of geometric deformation based on the detected shake. Coordinates of the captured image corresponding to an intersection of the optical axis and the image sensor before the optical correction element is moved through the driving are determined as the reference coordinates.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 22, 2015
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20150009345
    Abstract: An image pickup apparatus performs image shake correction by driving a correction member which is movable for image shake correction. An image sensing device receives light focused by an imaging optical system and then photoelectrically converts the optical image into an image signal so as to output the image signal. An attitude sensor unit detects the attitude of the image pickup apparatus, and a drive control unit performs drive control of the correction member and position detection. A geometric deformation amount calculating unit decomposes distortion of an image into a first distortion component which varies due to the driving of the correction member and a second distortion component which does not vary due to the driving of the correction member so as to calculate correction values for the first and second distortion components. An image processing unit corrects the first and second distortion components by image processing based on the calculated correction values.
    Type: Application
    Filed: June 20, 2014
    Publication date: January 8, 2015
    Inventor: Hidetoshi Tsubaki
  • Patent number: 8922664
    Abstract: An image processing apparatus includes a geometric converter configured to perform a geometric conversion process to a first frame image among frame images that are sequentially generated through imaging, based on motion information obtained by using a motion detector sensor, a motion vector detector configured to detect a motion vector between a geometric conversion image obtained through the geometric conversion process and a second frame image that has not undergone the geometric conversion process, an image stabilization parameter calculator configured to calculate an image stabilization parameter for different motions by using the motion information and the motion vector, and a stabilized image generator configured to generate a stabilized image through a deformation process to the second frame image or a frame image generated subsequent to the second frame image by utilizing the image stabilization parameter.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Oshino, Hidetoshi Tsubaki, Mitsuhiro Saito
  • Patent number: 8866922
    Abstract: After a plurality of differently exposed images are obtained, and tone levels of the plurality of images are adjusted, image elements corresponding to changes of objects are detected based on pixel value differences between the plurality of images. Then, the numbers of blown-out highlight and shadow-detail loss image elements in the image elements corresponding to the changes of the objects are counted for the plurality of images. Then, an image in which the total of the numbers of image elements is smallest is selected. Furthermore, image elements corresponding to the changes of the objects in the selected image are used as those corresponding to image elements corresponding to the changes of the objects in an HDR image to be generated.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20140293004
    Abstract: An image processing apparatus comprises: an input unit configured to input an image signal obtained by photoelectrically converting, by an image sensor, an optical image incident via an optical system including optical image stabilization unit; an acquisition unit configured to acquire optical image stabilization control information obtained by the optical image stabilization unit; and a motion of camera prediction unit configured to predict a motion of camera based on information obtained by eliminating influence of optical image stabilization by the optical image stabilization unit from the image signal input from the input unit based on the optical image stabilization control information.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 2, 2014
    Applicant: CANON KA8USHIKI KAISHA
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20140267809
    Abstract: An imaging apparatus includes a first image shake correcting unit for correcting image shake and moves a correction lens in a direction perpendicular to the optical axis using detection information obtained by an attitude detection sensor. In a second image shake correcting unit, a translational motion detecting unit acquires information about an image captured by an imaging element from a pre-processing unit so as to detect the motion of the image in the translational direction. An in-plane rotational motion detecting unit detects the motion of the image in the rotational direction about the optical axis. A geometric deforming unit acquires detection information from the translational motion detecting unit and the in-plane rotational motion detecting unit so as to correct the image shake of the corrected image, which occurs when the image is subject to rotational correction based on the detection information obtained from the in-plane rotational motion detecting unit.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 18, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hidetoshi Tsubaki
  • Patent number: 8836769
    Abstract: A 3D image display apparatus is disclosed which includes a ray modulator which emits a directive ray in a time series manner based on parallax image information, a scanner which deflects the ray from the ray modulator and scans a predetermined plane two-dimensionally with the deflected ray, a light emitting point distributor which is arranged on a light emission side of the scanner to form a plurality of light emitting points, and a light emitting point multiplexer which is arranged on the light emission side of the light emitting point distributor to form a plurality of secondary light emitting points with rays from individual ones of the light emitting points, to enable stereopsis with a super multi-view region at a high resolution.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidetoshi Tsubaki, Toshiyuki Sudo, Tsutomu Osaka, Hiroshi Nishihara
  • Publication number: 20140218569
    Abstract: There is provided an imaging apparatus capable of reducing a margin region required for rolling shutter distortion correction processing. The imaging apparatus includes an imaging unit employing a rolling shutter method, and a correction unit configured to perform correction processing for reducing a rolling shutter distortion on image data captured by the imaging unit. The correction unit adjusts readout positions of other lines relative to a readout position of a reference line in the image data, and sets the reference line so as to reduce a deviation amount between the readout position of the reference line and the readout positions of the other lines.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Inventor: Hidetoshi Tsubaki
  • Publication number: 20140161357
    Abstract: An image processing apparatus which can increase processing speed, reduce memory access load, and enhance ease of control in image processing. Coordinate computations through different geometric deformations are performed on respective pixels of an input image, thus calculating post-geometric deformation coordinates and coordinate moving vectors. Geometric deformation parameters for geometric deformations are output to a plurality of coordinate computation units connected in series. The coordinate moving vectors are collectively combined together to generate combined coordinate moving vectors, based on which coordinates of pixels in an image to be output are converted into coordinates of the pixels of the input image. The coordinate computations are performed based on the coordinates of the pixels of the input image and the geometric deformation parameters.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 12, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidetoshi TSUBAKI, Ken TERASAWA
  • Patent number: 8593533
    Abstract: The present invention provides an image processing apparatus capable of obtaining good shake-corrected images in electronic image stablization irrespective of changes of image-taking conditions. An image processing apparatus comprises a shake correcting part that performs coordinate transformation processing based on shake information to an input image that is generated by use of an image-pickup device, and a method changing part that changes a coordinate transformation method for the coordinate transformation processing.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: November 26, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuhiro Saito, Takahiro Oshino, Hidetoshi Tsubaki
  • Patent number: 8508651
    Abstract: An image stabilizing apparatus includes a motion vector calculating part that calculates a motion vector between a plurality of images including a displacement caused by a motion of an image-pickup apparatus, a shake-correction parameter calculating part that receives the motion vector as input to calculate a shake correction amount, and an image transforming part that performs geometric transformation of the image in accordance with the shake correction amount. The shake-correction parameter calculating part performs variation amount calculation, variation amount correction and correction amount calculation based on the motion information between the plurality of images. The image stabilizing apparatus preserves a motion in video from an intended camera work and allows image stabilization for an unintended shake.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 13, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidetoshi Tsubaki, Mitsuhiro Saito, Takahiro Oshino