Patents by Inventor Koichi Washisu

Koichi Washisu 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: 20220094851
    Abstract: An image processing apparatus comprises a first alignment unit that aligns a plurality of images that have been continuously shot, a second alignment unit that aligns the plurality of images with higher accuracy than the first alignment unit, a processing time taken to perform the alignment being longer than a processing time taken by the first alignment unit, a selection unit that selects an alignment unit from the first alignment unit and the second alignment unit to be used for aligning the plurality of images according to shooting conditions of the plurality of images, and a synthesis unit that synthesizes the plurality of images that have undergone alignment by the alignment unit selected by the selection unit.
    Type: Application
    Filed: September 20, 2021
    Publication date: March 24, 2022
    Inventors: Ryuichiro Yasuda, Yu Narita, Koichi Washisu
  • Patent number: 11277561
    Abstract: An image stabilization apparatus comprises: a first extraction unit that extracts first signals of a plurality of different frequency components from each of a plurality of motion vectors obtained from an image signal output from an image sensor; a second extraction unit that extracts second signals of the plurality of different frequency components from a detection signal of a detected shake of an apparatus; an acquisition unit that acquires correlation values between the first signals of the plurality of motion vectors and the second signal for each of the frequency components; a selection unit that selects at least one of the plurality of motion vectors based on the correlation values each for each of the frequency components; and an image stabilization unit that performs image stabilization using the motion vector selected by the selection unit.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: March 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomomi Uesugi, Koichi Washisu
  • Publication number: 20220076390
    Abstract: An image processing apparatus that can obtain a high-definition image by reducing an alignment mistake of a plurality of images. The image processing apparatus includes an alignment unit that performs sequential alignment that aligns adjacent images and reference alignment that aligns images other than a reference image to the reference image, and a control unit that controls the alignment unit to align a plurality of images that include a same object and are continuously picked up by an image pickup unit in time series by combining the sequential alignment and the reference alignment.
    Type: Application
    Filed: September 6, 2021
    Publication date: March 10, 2022
    Inventors: Tomomi Uesugi, Koichi Washisu, Mitsuhiro Saito
  • Patent number: 11265470
    Abstract: A control apparatus includes a calculating filter configured to perform a calculation process based on a signal from a shake detector used for an image stabilization, and a correcting filter to which an output signal from the calculating filter is input. The correcting filter includes a boost filter configured to change a gain based on a first frequency and a second frequency, and a notch filter having a center frequency between the first frequency and the second frequency.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 1, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Takeuchi, Koichi Washisu
  • Publication number: 20210218895
    Abstract: Provided is an imaging device that performs a pixel shift for moving an imaging element a predetermined shift amount for each exposure to acquire a plurality of images and synthesizes the plurality of images to generate a high-resolution image, the imaging device including: a signal processing unit that sets an image blur correction target value on the basis of a shake of the imaging device detected by a vibration detection unit; and an image blur correction unit that corrects an image blur in accordance with the image blur correction target value, wherein the signal processing unit fixes the image blur correction target value to a predetermined value when the pixel shift is performed.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 15, 2021
    Inventors: Go Naito, Koichi Washisu
  • Patent number: 11050937
    Abstract: An image stabilizing apparatus includes at least one processor or circuit configured to execute a plurality of tasks including a first calculation task configured to make a calculation using an output signal from a shake detector configured to detect a shake, a second calculation task configured to estimate an estimated value corresponding to an offset variation value included in the output signal from the shake detector by using a signal processed by a low-pass filter having a high-frequency attenuation characteristic steeper than a high-frequency attenuation characteristic of the first calculation task, and a correction task configured to drive a corrector configured to correct an image blur caused by the shake using a calculation result of the first calculation task and the estimated value.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 29, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Go Naito, Koichi Washisu, Kenji Takeuchi
  • Patent number: 10992867
    Abstract: An image capturing apparatus includes an image capturing device, a period detection circuit configured to detect a period of a focus variation, a first detection device configured to detect a first translation component, a second detection device configured to detect a rotation component, a first extraction unit configured to extract a component of a predetermined frequency band from the first translation component, a second extraction unit configured to extract the component of the predetermined frequency band from the rotation component, a obtaining unit configured to compare a signal extracted by the first extraction unit with a signal extracted by the second extraction unit to obtain a rotation radius, and a translation obtaining unit configured to obtain a second translation component using the signal from the second detection device and the rotation radius.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: April 27, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomomi Uesugi, Koichi Washisu
  • Publication number: 20210067698
    Abstract: An image stabilizing apparatus includes at least one processor or circuit configured to execute a plurality of tasks including a first calculation task configured to make a calculation using an output signal from a shake detector configured to detect a shake, a second calculation task configured to estimate an estimated value corresponding to an offset variation value included in the output signal from the shake detector by using a signal processed by a low-pass filter having a high-frequency attenuation characteristic steeper than a high-frequency attenuation characteristic of the first calculation task, and a correction task configured to drive a corrector configured to correct an image blur caused by the shake using a calculation result of the first calculation task and the estimated value.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Inventors: Go Naito, Koichi Washisu, Kenji Takeuchi
  • Publication number: 20210067697
    Abstract: A control apparatus includes a calculating filter configured to perform a calculation process based on a signal from a shake detector used for an image stabilization, and a correcting filter to which an output signal from the calculating filter is input. The correcting filter includes a boost filter configured to change a gain based on a first frequency and a second frequency, and a notch filter having a center frequency between the first frequency and the second frequency.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Inventors: Kenji Takeuchi, Koichi Washisu
  • Publication number: 20200389594
    Abstract: An image stabilization apparatus comprises: a first extraction unit that extracts first signals of a plurality of different frequency components from each of a plurality of motion vectors obtained from an image signal output from an image sensor; a second extraction unit that extracts second signals of the plurality of different frequency components from a detection signal of a detected shake of an apparatus; an acquisition unit that acquires correlation values between the first signals of the plurality of motion vectors and the second signal for each of the frequency components; a selection unit that selects at least one of the plurality of motion vectors based on the correlation values each for each of the frequency components; and an image stabilization unit that performs image stabilization using the motion vector selected by the selection unit.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 10, 2020
    Inventors: Tomomi Uesugi, Koichi Washisu
  • Publication number: 20200275028
    Abstract: An image capturing apparatus includes an image capturing device, a period detection circuit configured to detect a period of a focus variation, a first detection device configured to detect a first translation component, a second detection device configured to detect a rotation component, a first extraction unit configured to extract a component of a predetermined frequency band from the first translation component, a second extraction unit configured to extract the component of the predetermined frequency band from the rotation component, a obtaining unit configured to compare a signal extracted by the first extraction unit with a signal extracted by the second extraction unit to obtain a rotation radius, and a translation obtaining unit configured to obtain a second translation component using the signal from the second detection device and the rotation radius.
    Type: Application
    Filed: February 14, 2020
    Publication date: August 27, 2020
    Inventors: Tomomi Uesugi, Koichi Washisu
  • Patent number: 10757349
    Abstract: According to the present invention, an imaging device and a reproducing device that allow for high quality reproduction of images generated by using two image signals having different lengths of accumulation periods output form a single imaging element are provided. A solid state imaging device of the invention includes a pixel array including a pixel having first and second photoelectric conversion units; a scanning unit that drives the pixel such that an accumulation period of an intermediate time of the first photoelectric conversion unit matches an intermediate time of an accumulation period of the second photoelectric conversion unit; a readout unit that reads out a first image signal from the first photoelectric conversion unit and reads out a second image signal from the second photoelectric conversion unit; and a generating unit that generates images by using the first and second image signals whose accumulation periods have the matched intermediate time.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: August 25, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Fumihiro Kajimura, Yasuo Suda, Koichi Washisu, Akihiko Nagano, Ryo Yamasaki, Masafumi Kimura, Makoto Oikawa, Go Naito
  • Patent number: 10424343
    Abstract: An imaging device includes an imaging element that acquires a first image based on signal charge generated during a first accumulation time, and a second image based on signal charge generated during a second accumulation time relatively longer than the first accumulation time and synchronized with the first image during a synchronization period including the first accumulation time, and a moving image file generating unit that generates a moving image file including a first moving image based on the first image, a second moving image based on the second image, and synchronization information for synchronizing the first moving image and the second moving image frame by frame.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masafumi Kimura, Yasuo Suda, Koichi Washisu, Akihiko Nagano, Ryo Yamasaki, Makoto Oikawa, Fumihiro Kajimura, Go Naito
  • Patent number: 10348966
    Abstract: A control apparatus includes a signal readout unit 15 which reads out a frame image obtained from an image pickup device while the frame image is divided into a plurality of different regions, an image information calculating unit 16 which calculates image information based on an image signal of each of the plurality of different regions obtained from the signal readout unit, and an adjusting unit 17 which determines a target adjustment value of an image pickup unit including an image pickup optical system and the image pickup device based on the image information during capturing the frame image.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 9, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Washisu, Masafumi Kimura, Fumihiro Kajimura
  • Patent number: 10326938
    Abstract: The image stabilization control apparatus that performs, using a shake detection signal acquired through a shake detector configured to detect a shake and a motion vector detection signal indicating a motion vector detected in a video signal produced through an image sensor, image stabilization control for reducing image blur due to the shake. The apparatus includes a predictor that produces, using the motion vector detection signal, a predicted error signal that indicates a predicted value of an error signal included in the shake detection signal, a signal producer that subtracts the predicted error signal from the shake detection signal to produce a first image stabilization signal, and a controller that performs the image stabilization control using the first image stabilization signal.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 18, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Fumihiro Kajimura, Koichi Washisu
  • Patent number: 10313600
    Abstract: Provided is an imaging device including an imaging element having a first photoelectric conversion unit and a second photoelectric conversion unit, in which a light-receiving efficiency of the second photoelectric conversion unit is lower than a light-receiving efficiency of the first photoelectric conversion unit; an optics that guides a light flux from an object to the imaging element; and a control unit that selects a combination of the first photoelectric conversion unit and the second photoelectric conversion unit used for a motion image capturing and a static image capturing in accordance with a brightness of the object.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: June 4, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masafumi Kimura, Koichi Washisu, Yasuo Suda, Akihiko Nagano, Fumihiro Kajimura, Go Naito, Ryo Yamasaki, Makoto Oikawa
  • Patent number: 10298844
    Abstract: An image processing apparatus detects predetermined information from an image signal and output a detection signal indicating the detected information, stores the detection signals for a plurality of periods, calculates a first prediction value based on a predetermined number of detection signals, from a newer one to older ones excluding a latest detection signal, stored in the storage unit, calculates a coefficient based on a difference between the first prediction value and a value of the latest detection signal, calculates a second prediction value based on the coefficient and the predetermined number of detection signals, from the latest one to older ones, and generates, based on the second prediction value, a control signal for controlling a predetermined constituent member.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: May 21, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masafumi Kimura, Koichi Washisu
  • Patent number: 10283538
    Abstract: An imaging device includes a plurality of pixels, each of which including a first pixel element including a first photoelectric conversion unit, and a second pixel element including a second photoelectric conversion unit lower in sensitivity than the first photoelectric conversion unit, a readout circuit configured to read out a first image signal based on signal charge generated in the first pixel element during a first accumulation period, and a second image signal based on signal charge generated in the second pixel element during a second accumulation period longer than the first accumulation period, the second image signal being synchronized with the first image signal, and a control unit configured to control the readout circuit so that a first readout period for reading out the first image signal is performed during the second accumulation period.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: May 7, 2019
    Assignee: CANON KABSHIKI KAISHA
    Inventors: Fumihiro Kajimura, Yasuo Suda, Koichi Washisu, Akihiko Nagano, Ryo Yamasaki, Masafumi Kimura, Makoto Oikawa, Go Naito
  • Patent number: 10257437
    Abstract: An imaging apparatus that performs positioning of a plurality of images that has been continuously captured by an image sensor includes at least one memory, and at least one processor coupled to the at least one memory. The at least one processor functions as a detection unit configured to detect a difference in position between the images captured by the image sensor, a drive unit configured to drive a shake correction unit that optically corrects image blur of each image based on the difference in position detected by the detection unit, and a coordinate transformation unit configured to perform positioning of the images in which the image blur has been corrected by the shake correction unit, based on the difference in position detected by the detection unit.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: April 9, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumihiro Kajimura, Koichi Washisu
  • Publication number: 20190082127
    Abstract: According to the present invention, an imaging device and a reproducing device that allow for high quality reproduction of images generated by using two image signals having different lengths of accumulation periods output form a single imaging element are provided. A solid state imaging device of the invention includes a pixel array including a pixel having first and second photoelectric conversion units; a scanning unit that drives the pixel such that an accumulation period of an intermediate time of the first photoelectric conversion unit matches an intermediate time of an accumulation period of the second photoelectric conversion unit; a readout unit that reads out a first image signal from the first photoelectric conversion unit and reads out a second image signal from the second photoelectric conversion unit; and a generating unit that generates images by using the first and second image signals whose accumulation periods have the matched intermediate time.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Inventors: Fumihiro Kajimura, Yasuo Suda, Koichi Washisu, Akihiko Nagano, Ryo Yamasaki, Masafumi Kimura, Makoto Oikawa, Go Naito