Canon Kabushiki Kaisha

Ryuichiro Yasuda

Yu Narita

Go Naito

Koichi Washisu

Toru Matsumoto

Kosuke Kiyamura

Tamaki Negishi

Fumihiro Kajimura

Mitsuhiro Saito

Tomomi Uesugi

Kyosuke Sato

Shimpei Itagaki

Hirotaka Shindo

Tomomi Mogami

Naoki Nomura

An evaluating apparatus is configured to evaluate image stabilizing performance of an imaging unit around an optical axis. The evaluating apparatus includes an object disposed to face the imaging unit, the object having a first feature point at a position different from the optical axis of the imaging unit, an excitation unit configured to excite the imaging unit, and an evaluating unit configured to evaluate an image of the object captured by the imaging unit that is being excited by the excitation unit.

Evaluating apparatus, evaluating method, manufacturing method of imaging unit, and storage medium

An image blur correction apparatus comprises an object detection unit configured to output a position of the part of the object, a selection unit configured to select a part of an object from among parts of one or more objects, and an object blur correction amount calculation unit configured to calculate an object blur correction amount, wherein the object blur correction amount calculation unit, when a part of an object selected by the selection unit is switched from a first part to a second part, calculates the object blur correction amount based on a difference between a position of the selected part of the object and the target position, a position of the second part in an image, and a position of the first part in an image acquired before switching.

Image blur correction apparatus, control method therefor, imaging apparatus, and storage medium

An image evaluation apparatus comprises an image capturing device configured to include a blur correction function, a vibration control unit configured to vibrate the image capturing device based on an input waveform, a vibration detection unit that detects the vibration of the image capturing unit, a memory storing instructions, and a processor executing the instructions causing the image evaluation apparatus to compare the input waveform with the waveform of the vibration detection result that was detected by the vibration detection unit, and perform a captured image evaluation that is an evaluation of the blur correction function based on a captured image result of a subject by the image capturing device, wherein the processor performs captured image evaluation in a case in which it has been determined that the difference of the waveform of the vibration detection result with respect to the input waveform is within a predetermined range.

Evaluation apparatus, evaluation method, and storage medium

An image stabilization control apparatus comprising: a first receiving unit that receives a translational shake signal that indicates a translational shake in a first direction; a second receiving unit that receives a first rotational shake signal that indicates a rotational shake about a first axis that intersects with the direction of gravity and the first direction; a first calculation unit that finds a first fluctuation range of a gravitational component in the first direction based on the first rotational shake signal; a second calculation unit that finds an amount of shake in the first direction based on the translational shake signal and the first fluctuation range; and a third calculation unit that finds a target value for reducing a shake in the first direction based on the amount of shake found by the second calculation unit.

Image stabilization control apparatus and method

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.

Evaluation method for image stabilization effect of imaging apparatus, evaluation device, and program storage medium

An image stabilization control apparatus comprises: a first detection unit that detects a subject or subjects in an input image using a learned model and outputs subject information of the detected subject or subjects; a tracking unit that tracks one subject detected by the first detection unit in a plurality of images input consecutively; a reliability calculation unit that calculates reliability of the tracking by the tracking unit based on the subject information; and a first correction amount calculation unit that calculates a first correction amount to be used for image stabilization by adjusting a provisional correction amount which is based on a difference between a position of the subject being tracked by the tracking unit and a predetermined target position in an image, according to the reliability.

Image stabilization control apparatus and method, image capturing apparatus, image capturing system, and storage medium

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.

Image processing apparatus, image capturing apparatus, image shooting control apparatus, control method thereof, and storage medium

A correction control apparatus outputs a blur correction amount associated with an image blur with respect to a group of captured images. The apparatus obtains status information indicating an image capture status of the group of images, obtains a result of detection of a motion blur with respect to the group of images, derives the blur correction amount based on the obtained result, outputs the blur correction amount and controls a method of derivation of the blur correction amount. The apparatus includes a filter that extracts components of a first frequency band from the result, and derives the blur correction amount based on the components of the first frequency band associated with the motion blur extracted by the filter, and causes the first frequency band extracted by the filter to vary in accordance with the obtained status information.

Correction control apparatus, image capturing apparatus, control method, and recording medium

An image capturing apparatus that is capable of accurately acquiring motion vectors according to a photographing environment and performing blur correction with high accuracy. The image capturing apparatus includes an image sensor, and a photometry unit that performs photometry of a photographing environment. A motion vector calculation section calculates motion vectors based on images acquired by the image sensor. A camera system controller calculates a reliability of the motion vectors. A photographing condition determination section determines photographing conditions for consecutively photographing a plurality of images by the image sensor, according to a photometry result and the calculated reliability.

Image capturing apparatus that performs blur correction and method of controlling same

An evaluation method of an image stabilization effect of an imaging device includes calculating an evaluation value of the image stabilization effect on the basis of shutter speed values in case of which each of a reference shake amount theoretically calculated on the basis of a shake waveform applied to the imaging device and a measured shake amount calculated using an image captured in a state in which the imaging device is vibrated becomes a specified shake amount, and setting the specified shake amount. The setting includes calculating an image deterioration amount of the imaging device caused by something other than a shake from the outside, and selecting a determination level that defines the specified shake amount from a plurality of determination levels having different shake amounts on the basis of the image deterioration amount.

Evaluation method and evaluation device of image stabilization effect of imaging device, and program storage medium

An image stabilization control apparatus includes a signal processing unit, a control unit, and an overflow preventing unit. The signal processing unit controls image stabilization based on a second image stabilization target value in aiming at an object in preparation for still image exposure, and controls the image stabilization based on a first image stabilization target value during still image exposure. The overflow preventing unit prevents a calculation overflow of the first image stabilization target value while the control unit controls the image stabilization based on the second image stabilization target value.

Image stabilization control apparatus, image pickup apparatus, lens apparatus, imaging system, control method, and storage medium with calculation overflow prevention

An image blur information acquisition apparatus includes a first acquisition unit configured to acquire a first shake detection result from a first shake detection unit configured to detect a shake amount of an image capturing apparatus based on a motion vector, a second acquisition unit configured to acquire a second shake detection result from a second shake detection sensor configured to detect a rotational angular velocity, and an estimation unit configured to estimate an amount of offset included in the second shake detection result, based on the first shake detection result and the second shake detection result, wherein the estimation unit is configured to set degree of change of estimation value by updating the offset amount based on a difference between the second shake detection result and the first shake detection result.

Image blur information acquisition apparatus and method, and storage medium

An image stabilization apparatus includes a first acquisition unit configured to acquire an output of a shake detection device, a motion vector detection unit configured to detect a motion vector, an estimation unit configured to calculate an estimate of an offset value of the shake detection device using an observed offset value and an a priori offset estimate, the observed offset value being obtained using a difference between the output of the shake detection device and the motion vector; and a calculation unit configured to calculate a correction amount for correcting image blur using the output of the shake detection device and the estimate of the offset value, wherein the estimation unit is configured to calculate the estimate of the offset value according to operation for driving a movable lens.

Image stabilization apparatus, method of controlling the same, image capturing apparatus, and storage medium

An image blur correction device includes a motion detection unit and detects a motion of panning, tilting, and camera shake. A motion determination unit determines a motion of an imaging apparatus based on an output of the motion detection unit. A high-pass filter (HPF) removes a low-frequency component from the output of the motion detection unit and a low-pass filter (LPF) removes a high-frequency component from an output of the HPF. A swing-back time period detection unit detects a period of time during which swing-back occurs based on the output of the LPF and the output of the motion determination unit. A gain control unit controls a gain to be multiplied by the output of the LPF based on the output of the detection unit and the output of the motion determination unit. A subtraction processing unit subtracts an output of the gain control unit from the output of the HPF.

Growing community of inventors

Tokyo, Japan

Ryuichiro Yasuda