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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10659744B2
Distance information generating apparatus, imaging apparatus, and distance information generating method
Publication/Patent Number: US10659744B2 Publication Date: 2020-05-19 Application Number: 16/009,317 Filing Date: 2018-06-15 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: H04N9/64 Abstract: The distance information generating apparatus includes a generating unit configured to generate the distance information, based on the parallax between the first image signal and the second image signal; an acquiring unit configured to acquire chromatic aberration information indicative of chromatic aberration of an image-forming optical system used in photographing of the first image signal and the second image signal; and a correction unit configured to correct the distance information generated in the generating unit, based on a contrast evaluation value generated for each of the plurality of pieces of color information from the third image signal, and the chromatic aberration information.
2 US10582180B2
Depth imaging correction apparatus, imaging apparatus, and depth image correction method
Publication/Patent Number: US10582180B2 Publication Date: 2020-03-03 Application Number: 15/416,236 Filing Date: 2017-01-26 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: G06T7/00 Abstract: Provided is a depth image correction apparatus to correct depth information in a depth image, which acquires a depth image and correction information, and corrects the depth values of the depth image based on the correction information and generates a corrected depth image. The apparatus acquires, as the correction information, first confidence indicating reliability in the depth values, and second confidence indicating reliability in position in an in-plane direction vertical to the depth direction. The apparatus performs first correction processing of generating a first corrected depth image by correcting the depth image based on the first confidence and similarity of the depth values, and second correction processing of generating the corrected depth image by correcting the first corrected depth image based on the second confidence.
3 EP3418773B1
DISTANCE INFORMATION GENERATING APPARATUS, IMAGING APPARATUS, AND DISTANCE INFORMATION GENERATING METHOD
Publication/Patent Number: EP3418773B1 Publication Date: 2020-04-08 Application Number: 18178239.2 Filing Date: 2018-06-18 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01S17/32
4 US2020278202A1
RANGING APPARATUS AND MOVING OBJECT CAPABLE OF HIGH-ACCURACY RANGING
Publication/Patent Number: US2020278202A1 Publication Date: 2020-09-03 Application Number: 16/876,270 Filing Date: 2020-05-18 Inventor: Takagi, Akinari   Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01C3/08 Abstract: A ranging apparatus capable of suppressing reduction of ranging accuracy at a long distance end of a distance measurement range, thereby making it possible to perform high-accuracy ranging over a wide distance range. An image pickup device receives light fluxes from a fixed focus optical system. A distance information acquisition unit acquires distance information of an object based on image signals from the image pickup device. This section acquires the distance information based on parallax between a first image based on a light flux having passed a first region of an exit pupil, and a second image based on a light flux having passed a second region of the exit pupil. The optical system is configured such that parallax of an object existing at a predetermined distance is smaller than parallax of an object existing at a shorter distance than the predetermined distance.
5 US10690495B2
Ranging apparatus and moving object capable of high-accuracy ranging
Publication/Patent Number: US10690495B2 Publication Date: 2020-06-23 Application Number: 15/450,321 Filing Date: 2017-03-06 Inventor: Takagi, Akinari   Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: G01C3/08 Abstract: A ranging apparatus capable of suppressing reduction of ranging accuracy at a long distance end of a distance measurement range, thereby making it possible to perform high-accuracy ranging over a wide distance range. An image pickup device receives light fluxes from a fixed focus optical system. A distance information acquisition unit acquires distance information of an object based on image signals from the image pickup device. This section acquires the distance information based on parallax between a first image based on a light flux having passed a first region of an exit pupil, and a second image based on a light flux having passed a second region of the exit pupil. The optical system is configured such that parallax of an object existing at a predetermined distance is smaller than parallax of an object existing at a shorter distance than the predetermined distance.
6 US10659766B2
Confidence generation apparatus, confidence generation method, and imaging apparatus
Publication/Patent Number: US10659766B2 Publication Date: 2020-05-19 Application Number: 15/296,525 Filing Date: 2016-10-18 Inventor: Nobayashi kazuya   Sasaki, Takashi   Assignee: Canon Kabushiki Kaisha   IPC: H04N13/271 Abstract: Provided is a confidence generation apparatus including: an acquisition unit configured to acquire a depth image signal which includes depth information representing a depth to an object in each of a plurality of pixels; and a generation unit configured to generate global confidence which represents confidence in a global region of the depth image signal. The generation unit includes: a first generation processing unit configured to generate local confidence which represents the confidence in the depth information in each of the plurality of pixels; a region division processing unit configured to divide the depth image signal into a plurality of regions based on the depth information; and a second generation processing unit configured to generate the global confidence in each of the plurality of regions based on the local confidence.
7 US2019128669A1
DISTANCE MEASUREMENT DEVICE, DISTANCE MEASUREMENT SYSTEM, IMAGING APPARATUS, MOVING BODY, METHOD OF CONTROLLING DISTANCE MEASUREMENT DEVICE, METHOD OF CONTROLLING DISTANCE MEASUREMENT SYSTEM, AND RECORDING MEDIUM
Publication/Patent Number: US2019128669A1 Publication Date: 2019-05-02 Application Number: 16/163,784 Filing Date: 2018-10-18 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01C3/08 Abstract: A distance measurement device includes a first acquisition unit configured to acquire distance information on the basis of a plurality of images captured at different viewpoints, a second acquisition configured to acquire correction information of the distance information on the basis of a plurality of images captured at a timing different from the plurality of images used by the first acquisition unit, and a correction unit configured to correct the distance information on the basis of the correction information.
8 US10339665B2
Positional shift amount calculation apparatus and imaging apparatus
Publication/Patent Number: US10339665B2 Publication Date: 2019-07-02 Application Number: 15/508,625 Filing Date: 2015-09-03 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: G06K9/00 Abstract: A positional shift amount calculation apparatus that calculates a positional shift amount, which is a relative positional shift amount between a first image, based on a luminous flux that has passed through a first imaging optical system, and a second image. A calculation unit calculates a positional shift amount based on data within a predetermined area out of first image data representing first and second image data. A setting unit sets a relative size of the area to the first and second image data. The calculation unit calculates a first positional shift amount using the first and second image data in the area having a first size that is preset. The setting unit sets a second size of the area based on the size of the first positional shift amount and an optical characteristic of the first imaging optical system. The calculation unit then calculates a second positional shift amount.
9 US2019204073A1
DISTANCE INFORMATION PROCESSING APPARATUS, IMAGING APPARATUS, DISTANCE INFORMATION PROCESSING METHOD AND PROGRAM
Publication/Patent Number: US2019204073A1 Publication Date: 2019-07-04 Application Number: 16/294,128 Filing Date: 2019-03-06 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01B11/14 Abstract: A distance information processing apparatus includes: a distance calculator configured to calculate object distances, which are distances to an object in ae depth direction, for a plurality of pixel positions on the basis of a first image signal and a second image signal, so as to calculate a distance image signal constituted by a plurality of object distances; a first confidence calculator configured to calculate a first confidence representing certainty of an object distance value in the distance image signal; and a range calculator configured to calculate a distance range, which is a range of an object distance, on the basis of the distance image signal and the first confidence.
10 US10267623B2
Distance information processing apparatus, imaging apparatus, distance information processing method and program
Publication/Patent Number: US10267623B2 Publication Date: 2019-04-23 Application Number: 15/063,864 Filing Date: 2016-03-08 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: G01B11/14 Abstract: A distance information processing apparatus includes: a distance calculator configured to calculate object distances, which are distances to an object in ae depth direction, for a plurality of pixel positions on the basis of a first image signal and a second image signal, so as to calculate a distance image signal constituted by a plurality of object distances; a first confidence calculator configured to calculate a first confidence representing certainty of an object distance value in the distance image signal; and a range calculator configured to calculate a distance range, which is a range of an object distance, on the basis of the distance image signal and the first confidence.
11 US10263027B2
Solid-state imaging device and imaging apparatus
Publication/Patent Number: US10263027B2 Publication Date: 2019-04-16 Application Number: 15/402,020 Filing Date: 2017-01-09 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: H01L27/146 Abstract: A solid-state imaging device includes a plurality of pixels, wherein one or more of the plurality of pixels have a pupil dividing portion and a light receiving portion, the light receiving portion includes a plurality of photoelectric conversion regions, an element isolation region is provided between adjacent ones of the plurality of photoelectric conversion regions, and wherein a scatterer is provided within the pupil dividing portion and above the element isolation region, and the scatterer is formed from a material of a refractive index smaller than a refractive index of a material of the pupil dividing portion peripheral to the scatterer.
12 US10306132B2
Distance calculation apparatus, imaging apparatus and distance calculation method that include confidence calculation of distance information
Publication/Patent Number: US10306132B2 Publication Date: 2019-05-28 Application Number: 15/144,853 Filing Date: 2016-05-03 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: H04N5/232 Abstract: A distance calculation apparatus calculates distance information based on a first image, which is generated based on luminous flux that passed through a first pupil region, and a second image, which is generated based on luminous flux that passed through a second pupil region. The distance calculation apparatus includes a distance calculation unit to calculate the distance information by comparing a local region of the first image and a local region of the second image and a confidence calculation unit to calculate confidence of the distance information based on a contrast evaluation value, which is a value indicating a magnitude of a contrast change amount in the local region of the first image, in the local region of the second image, or in a local region of a composite image of the first image and the second image.
13 US10477100B2
Distance calculation apparatus, imaging apparatus, and distance calculation method that include confidence calculation of distance information
Publication/Patent Number: US10477100B2 Publication Date: 2019-11-12 Application Number: 16/395,420 Filing Date: 2019-04-26 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: H04N5/232 Abstract: A distance calculation apparatus calculates distance information based on a first image, which is generated based on luminous flux that passed through a first pupil region, and a second image, which is generated based on luminous flux that passed through a second pupil region. The distance calculation apparatus includes a distance calculation unit to calculate the distance information by comparing a local region of the first image and a local region of the second image and a confidence calculation unit to calculate confidence of the distance information based on a contrast evaluation value, which is a value indicating a magnitude of a contrast change amount in the local region of the first image, in the local region of the second image, or in a local region of a composite image of the first image and the second image.
14 US2019253610A1
DISTANCE CALCULATION APPARATUS, IMAGING APPARATUS, AND DISTANCE CALCULATION METHOD THAT INCLUDE CONFIDENCE CALCULATION OF DISTANCE INFORMATION
Publication/Patent Number: US2019253610A1 Publication Date: 2019-08-15 Application Number: 16/395,420 Filing Date: 2019-04-26 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01C3/32 Abstract: A distance calculation apparatus calculates distance information based on a first image, which is generated based on luminous flux that passed through a first pupil region, and a second image, which is generated based on luminous flux that passed through a second pupil region. The distance calculation apparatus includes a distance calculation unit to calculate the distance information by comparing a local region of the first image and a local region of the second image and a confidence calculation unit to calculate confidence of the distance information based on a contrast evaluation value, which is a value indicating a magnitude of a contrast change amount in the local region of the first image, in the local region of the second image, or in a local region of a composite image of the first image and the second image.
15 US2019301852A1
DISTANCE MEASURING DEVICE, IMAGING APPARATUS, MOVING DEVICE, ROBOT DEVICE, AND RECORDING MEDIUM
Publication/Patent Number: US2019301852A1 Publication Date: 2019-10-03 Application Number: 16/353,573 Filing Date: 2019-03-14 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01B11/02 Abstract: A distance measuring device includes an imaging optical system having an optical filter and an imaging element in which a plurality of pixel portions is arranged. The optical filter is divided into three regions, the first region has a first spectral transmittance characteristic, and the second region and the third region a second spectral transmittance characteristic in which light having a longer wavelength compared to the first spectral transmittance characteristic is transmitted. The first pixel portion that configures the imaging element includes a first photoelectric conversion unit and receives light that has passing through the first region. The second pixel portion that configures the imaging element includes second and third photoelectric conversion units, and receives light that has passed through each of the second region and the third region. A distance information acquiring unit acquires distance information corresponding to parallax of image data based on each of the output signals from the second and third photoelectric conversion units.
16 US10514248B2
Distance detecting apparatus
Publication/Patent Number: US10514248B2 Publication Date: 2019-12-24 Application Number: 14/417,924 Filing Date: 2013-07-17 Inventor: Nobayashi kazuya   Ikemoto, Kiyokatsu   Assignee: CANON KABUSHIKI KAISHA   IPC: G01B11/12 Abstract: A distance detecting apparatus includes an imaging unit that generates a first image signal and a second image signal and an arithmetic processing unit. The distance detecting apparatus detects the distance to a subject on the basis of an amount of defocus indicating the distance between an imaging plane of the imaging unit and an image forming plane of light fluxes. The arithmetic processing unit executes a first step of calculating an amount of temporary defocus on the basis of the first image signal and the second image signal, a second step of calculating a conversion factor used to convert an amount of image displacement between a first image and a second image into the amount of defocus on the basis of the amount of temporary defocus, and a third step of calculating the amount of defocus by using the conversion factor.
17 EP3418773A1
DISTANCE INFORMATION GENERATING APPARATUS, IMAGING APPARATUS, AND DISTANCE INFORMATION GENERATING METHOD
Publication/Patent Number: EP3418773A1 Publication Date: 2018-12-26 Application Number: 18178239.2 Filing Date: 2018-06-18 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: G01S17/32 Abstract: The distance information generating apparatus includes a generating unit configured to generate the distance information, based on the parallax between the first image signal and the second image signal; an acquiring unit configured to acquire chromatic aberration information indicative of chromatic aberration of an image-forming optical system used in photographing of the first image signal and the second image signal; and a correction unit configured to correct the distance information generated in the generating unit, based on a contrast evaluation value generated for each of the plurality of pieces of color information from the third image signal, and the chromatic aberration information.
18 US2018367772A1
DISTANCE INFORMATION GENERATING APPARATUS, IMAGING APPARATUS, AND DISTANCE INFORMATION GENERATING METHOD
Publication/Patent Number: US2018367772A1 Publication Date: 2018-12-20 Application Number: 16/009,317 Filing Date: 2018-06-15 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: H04N9/64 Abstract: The distance information generating apparatus includes a generating unit configured to generate the distance information, based on the parallax between the first image signal and the second image signal; an acquiring unit configured to acquire chromatic aberration information indicative of chromatic aberration of an image-forming optical system used in photographing of the first image signal and the second image signal; and a correction unit configured to correct the distance information generated in the generating unit, based on a contrast evaluation value generated for each of the plurality of pieces of color information from the third image signal, and the chromatic aberration information
19 US9590004B2
Solid-state imaging device and imaging apparatus
Publication/Patent Number: US9590004B2 Publication Date: 2017-03-07 Application Number: 14/353,939 Filing Date: 2012-11-29 Inventor: Nobayashi kazuya   Assignee: CANON KABUSHIKI KAISHA   IPC: H01L27/146 Abstract: A solid-state imaging device includes a plurality of pixels, wherein one or more of the plurality of pixels have a pupil dividing portion and a light receiving portion, the light receiving portion includes a plurality of photoelectric conversion regions, an element isolation region is provided between adjacent ones of the plurality of photoelectric conversion regions, and wherein a scatterer is provided within the pupil dividing portion and above the element isolation region, and the scatterer is formed from a material of a refractive index smaller than a refractive index of a material of the pupil dividing portion peripheral to the scatterer.
20 DE112012005434B4
Festkörperabbildungsvorrichtung und Abbildungsgerät
Title (English): Fixed image device and printing equipment
Publication/Patent Number: DE112012005434B4 Publication Date: 2017-03-23 Application Number: 112012005434 Filing Date: 2012-11-29 Inventor: Nobayashi kazuya   Assignee: Canon Kabushiki Kaisha   IPC: G02B3/00 Abstract: Festkörperabbildungsvorrichtung mit einer Vielzahl von Bildelementen (100)