Patents by Inventor Tomomi Uesugi
Tomomi Uesugi 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: 11943535Abstract: An image stabilization control device capable of correcting a parallel blur or the like with high accuracy, the image stabilization control device including: a rotation radius calculation unit configured to calculate a rotation radius of an angle blur based on outputs of an angle blur signal acquired from an angle blur detection unit and a parallel blur signal acquired from a parallel blur detection unit; a rotation radius prediction unit configured to predict a change in the rotation radius based on an output of the rotation radius calculation unit and output a rotation radius prediction signal; and a blur correction control unit configured to control correction of the parallel blur based on the rotation radius prediction signal of the rotation radius prediction unit and the angle blur signal acquired from the angle blur detection unit.Type: GrantFiled: August 5, 2022Date of Patent: March 26, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Tomomi Uesugi, Koichi Washisu
-
Publication number: 20240073524Abstract: An image stabilization apparatus comprises a motion vector detector that detects a motion vector from images repeatedly output from an image sensor; a first calculator that calculates a first image stabilization coefficient based on the motion vector; a second calculator that calculates a second image stabilization coefficient based on acceleration of shake of an image capturing apparatus; a determination unit that selects either of the first or the second image stabilization coefficient based on information about accuracy of detection of the motion vector; and a translational shake calculator that calculates an amount of translational shake using the first or the second image stabilization coefficient selected by the determination unit. In a case where the information indicates that the accuracy is low, the determination unit selects the second image stabilization coefficient, and select the first image stabilization coefficient otherwise.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Inventor: Tomomi Uesugi
-
Patent number: 11871112Abstract: An image stabilization apparatus comprises a motion vector detector that detects a motion vector from images repeatedly output from an image sensor; a first calculator that calculates a first image stabilization coefficient based on the motion vector; a second calculator that calculates a second image stabilization coefficient based on acceleration of shake of an image capturing apparatus; a determination unit that selects either of the first or the second image stabilization coefficient based on information about accuracy of detection of the motion vector; and a translational shake calculator that calculates an amount of translational shake using the first or the second image stabilization coefficient selected by the determination unit. In a case where the information indicates that the accuracy is low, the determination unit selects the second image stabilization coefficient, and select the first image stabilization coefficient otherwise.Type: GrantFiled: January 31, 2022Date of Patent: January 9, 2024Assignee: CANON KABUSHIKI KAISHAInventor: Tomomi Uesugi
-
Patent number: 11770611Abstract: An image pickup apparatus is provided with an image blur correction apparatus that corrects image blur of a captured image by using a shake detection signal that has been detected by a shake detection unit. A controller for image blur correction generates a first signal obtained by multiplying an output signal of the shake detection unit by a first correction ratio gain. A second signal is generated by multiplying the sum of the output signal of the shake detection unit that has passed through a low-pass filter and the output signal of the shake detection unit that has passed through a high-pass filter by a second correction ratio gain. A target generating unit generates a target value signal for image blur correction based on the sum of the first and second signals and drives the shake correction unit.Type: GrantFiled: April 20, 2021Date of Patent: September 26, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Tomomi Uesugi, Mai Nakabayashi
-
Publication number: 20230224581Abstract: An evaluation method for an image stabilization effect of an imaging apparatus comprising: acquiring a first image obtained by imaging an object in a state in which the imaging apparatus is vibrated; acquiring a second image obtained by imaging the object in a state in which the imaging apparatus is stationary; and calculating an evaluation value indicating an image stabilization effect in a peripheral region of the imaging apparatus, based on a difference in blur amounts between the first image and the second image in the peripheral region deviated from the center of an optical axis.Type: ApplicationFiled: December 20, 2022Publication date: July 13, 2023Inventors: Ryuichiro YASUDA, Junichi SAITO, Mitsuhiro SAITO, Shimpei ITAGAKI, Go NAITO, Kyosuke SATO, Tomomi UESUGI, Naoki NOMURA
-
Publication number: 20230068428Abstract: An image stabilization control apparatus comprises: a first calculation unit that calculates a first shake reduction target value for reducing translational shake in a first direction using a first signal indicating translational shake in the first direction and a second signal indicating rotational shake about an axis in a second direction; a second calculation unit that calculates a second shake reduction target value for reducing the translational shake in the first direction using the first signal and a third signal indicating rotational shake about an axis in a third direction; and a selection unit that selects one of a plurality of shake reduction target values, including at least the first and second shake reduction target values, for reducing the translational shake in the first direction based on the second and third signals.Type: ApplicationFiled: August 15, 2022Publication date: March 2, 2023Inventors: Tomomi Uesugi, Koichi Washisu
-
Publication number: 20230055150Abstract: An image stabilization control device capable of correcting a parallel blur or the like with high accuracy is provided. A image stabilization control device includes: a rotation radius calculation unit configured to calculate a rotation radius of an angle blur based on outputs of an angle blur signal acquired from an angle blur detection unit and a parallel blur signal acquired from a parallel blur detection unit; a rotation radius prediction unit configured to predict a change in the rotation radius based on an output of the rotation radius calculation unit and output a rotation radius prediction signal; and a blur correction control unit configured to control correction of the parallel blur based on the rotation radius prediction signal of the rotation radius prediction unit and the angle blur signal acquired from the angle blur detection unit.Type: ApplicationFiled: August 5, 2022Publication date: February 23, 2023Inventors: Tomomi Uesugi, Koichi Washisu
-
Patent number: 11436707Abstract: An image stabilization control apparatus includes an extraction unit configured to extract signals in a plurality of frequency bands from a signal output from a first shake detection sensor detecting a translation component of shake, and extract signals in the plurality of frequency bands from a signal output from a second shake detection sensor detect detecting a rotation component of shake; a first calculation unit configured to calculate a rotational radius of shake for each of the plurality of frequency bands, using the signal from the first shake detection sensor and the signal from the second shake detection sensor; and a second calculation unit configured to calculate a parallel shake amount for each of the plurality of frequency bands, using the signal output from the second shake detection sensor and the rotational radius.Type: GrantFiled: March 3, 2020Date of Patent: September 6, 2022Assignee: Canon Kabushiki KaishaInventor: Tomomi Uesugi
-
Publication number: 20220256084Abstract: An image stabilization apparatus comprises a motion vector detector that detects a motion vector from images repeatedly output from an image sensor; a first calculator that calculates a first image stabilization coefficient based on the motion vector; a second calculator that calculates a second image stabilization coefficient based on acceleration of shake of an image capturing apparatus; a determination unit that selects either of the first or the second image stabilization coefficient based on information about accuracy of detection of the motion vector; and a translational shake calculator that calculates an amount of translational shake using the first or the second image stabilization coefficient selected by the determination unit. In a case where the information indicates that the accuracy is low, the determination unit selects the second image stabilization coefficient, and select the first image stabilization coefficient otherwise.Type: ApplicationFiled: January 31, 2022Publication date: August 11, 2022Inventor: Tomomi Uesugi
-
Patent number: 11277561Abstract: 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: GrantFiled: June 3, 2020Date of Patent: March 15, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Tomomi Uesugi, Koichi Washisu
-
Publication number: 20220076390Abstract: 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: ApplicationFiled: September 6, 2021Publication date: March 10, 2022Inventors: Tomomi Uesugi, Koichi Washisu, Mitsuhiro Saito
-
Patent number: 11233942Abstract: An image capturing apparatus comprises a first shake detection unit configured to detect a translation component of a shake in a first axial direction; a second shake detection unit configured to detect a rotational component of a shake about a second axis; a third shake detection unit configured to detect a rotational component of a shake about a third axis; a first acquisition unit configured to acquire a first shake correction amount from an output signals of the first and second shake detection units, and acquire a second shake correction amount from an output signals of the first and third shake detection units; and a second acquisition unit configured to calculate a translational shake amount in the first axial direction using the first shake correction amount and the second shake correction amount.Type: GrantFiled: March 24, 2020Date of Patent: January 25, 2022Assignee: CANON KABUSHIKI KAISHAInventor: Tomomi Uesugi
-
Publication number: 20210337127Abstract: An image pickup apparatus is provided with an image blur correction apparatus that corrects image blur of a captured image by using a shake detection signal that has been detected by a shake detection unit. A controller for image blur correction generates a first signal obtained by multiplying an output signal of the shake detection unit by a first correction ratio gain. A second signal is generated by multiplying the sum of the output signal of the shake detection unit that has passed through a low-pass filter and the output signal of the shake detection unit that has passed through a high-pass filter by a second correction ratio gain. A target generating unit generates a target value signal for image blur correction based on the sum of the first and second signals and drives the shake correction unit.Type: ApplicationFiled: April 20, 2021Publication date: October 28, 2021Inventors: Tomomi Uesugi, Mai Nakabayashi
-
Patent number: 10992867Abstract: 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: GrantFiled: February 14, 2020Date of Patent: April 27, 2021Assignee: Canon Kabushiki KaishaInventors: Tomomi Uesugi, Koichi Washisu
-
Publication number: 20200389594Abstract: 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: ApplicationFiled: June 3, 2020Publication date: December 10, 2020Inventors: Tomomi Uesugi, Koichi Washisu
-
Publication number: 20200314339Abstract: An image capturing apparatus comprises a first shake detection unit configured to detect a translation component of a shake in a first axial direction; a second shake detection unit configured to detect a rotational component of a shake about a second axis; a third shake detection unit configured to detect a rotational component of a shake about a third axis; a first acquisition unit configured to acquire a first shake correction amount from an output signals of the first and second shake detection units, and acquire a second shake correction amount from an output signals of the first and third shake detection units; and a second acquisition unit configured to calculate a translational shake amount in the first axial direction using the first shake correction amount and the second shake correction amount.Type: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Inventor: Tomomi Uesugi
-
Publication number: 20200294205Abstract: An image stabilization control apparatus includes an extraction unit configured to extract signals in a plurality of frequency bands from a signal output from a first shake detection sensor detecting a translation component of shake, and extract signals in the plurality of frequency bands from a signal output from a second shake detection sensor detect detecting a rotation component of shake; a first calculation unit configured to calculate a rotational radius of shake for each of the plurality of frequency bands, using the signal from the first shake detection sensor and the signal from the second shake detection sensor; and a second calculation unit configured to calculate a parallel shake amount for each of the plurality of frequency bands, using the signal output from the second shake detection sensor and the rotational radius.Type: ApplicationFiled: March 3, 2020Publication date: September 17, 2020Inventor: Tomomi Uesugi
-
Publication number: 20200275028Abstract: 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: ApplicationFiled: February 14, 2020Publication date: August 27, 2020Inventors: Tomomi Uesugi, Koichi Washisu