Patents by Inventor Tatsuro Koizumi
Tatsuro Koizumi 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).
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Patent number: 11138702Abstract: The information processing apparatus has an image correction unit. The image correction unit has a correction parameter determination unit configured to determine a correction parameter for correcting an image capturing characteristic of image data corresponding to a target viewpoint among a plurality of pieces of image data acquired by capturing an object from a plurality of viewpoints based on an image capturing characteristic of image data of another viewpoint different from the target viewpoint and a pixel value correction unit configured to correct a pixel value of the image data corresponding to the target viewpoint based on the correction parameter. Moreover, the information processing apparatus further has an image composition unit configured to generate composed image data based on the image data whose pixel value has been corrected.Type: GrantFiled: December 4, 2019Date of Patent: October 5, 2021Assignee: Canon Kabushiki KaishaInventor: Tatsuro Koizumi
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Patent number: 11017588Abstract: A system comprises an obtainment unit that obtains virtual viewpoint information relating to a position and direction of a virtual viewpoint; a designation unit that designates a focus object from a plurality of objects detected based on at least one of the plurality of images captured by the plurality of cameras; a decision unit that decides an object to make transparent from among the plurality of objects based on a position and direction of a virtual viewpoint that the virtual viewpoint information obtained by the obtainment unit indicates, and a position of the focus object designated by the designation unit; and a generation unit that generates, based on the plurality of captured images obtained by the plurality of cameras, a virtual viewpoint image in which the object decided by the decision unit is made to be transparent.Type: GrantFiled: March 10, 2020Date of Patent: May 25, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Kazuhiro Yoshimura, Kaori Taya, Shugo Higuchi, Tatsuro Koizumi
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Patent number: 10728513Abstract: An image processing apparatus includes: an image obtaining unit configured to obtain images of an image capturing target area from a plurality of directions; an information obtaining unit configured to obtain viewpoint information; a determination unit configured to determine a pixel value of a particular area in a virtual viewpoint image according to a virtual viewpoint at a first time indicated by the viewpoint information, based on a pixel value of an obtained image based on image capturing by a first image capturing apparatus at a second time, and a pixel value of an obtained image based on image capturing by a second image capturing apparatus at the first time, wherein the particular area is not captured by the first image capturing apparatus at the first time; and a generation unit configured to generate a virtual viewpoint image in accordance with the determination of the pixel value.Type: GrantFiled: September 17, 2018Date of Patent: July 28, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Tatsuro Koizumi
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Patent number: 10706568Abstract: Coordinates on a two-dimensional image that respectively correspond to points on a three-dimensional space that configures an object included in a field of view based on a viewpoint are specified. A depth map is generated based on a result of assignment processing that assigns distance information of a first point corresponding to first coordinates to a first area including the first coordinates and assigns distance information of a second point corresponding to second coordinates to a second area including the second coordinates, the first and second coordinates belonging to coordinates on the two-dimensional image. A distance from the viewpoint to the first point is longer than a distance from the viewpoint to the second point, and the first area is smaller than the second area. The points configuring the object include the first and second points.Type: GrantFiled: May 6, 2019Date of Patent: July 7, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Yoshinari Higaki, Tatsuro Koizumi, Tomohiro Nishiyama
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Publication number: 20200211271Abstract: A system comprises an obtainment unit that obtains virtual viewpoint information relating to a position and direction of a virtual viewpoint; a designation unit that designates a focus object from a plurality of objects detected based on at least one of the plurality of images captured by the plurality of cameras; a decision unit that decides an object to make transparent from among the plurality of objects based on a position and direction of a virtual viewpoint that the virtual viewpoint information obtained by the obtainment unit indicates, and a position of the focus object designated by the designation unit; and a generation unit that generates, based on the plurality of captured images obtained by the plurality of cameras, a virtual viewpoint image in which the object decided by the decision unit is made to be transparent.Type: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Inventors: Kazuhiro YOSHIMURA, Kaori TAYA, Shugo HIGUCHI, Tatsuro KOIZUMI
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Publication number: 20200193575Abstract: The information processing apparatus has an image correction unit. The image correction unit has a correction parameter determination unit configured to determine a correction parameter for correcting an image capturing characteristic of image data corresponding to a target viewpoint among a plurality of pieces of image data acquired by capturing an object from a plurality of viewpoints based on an image capturing characteristic of image data of another viewpoint different from the target viewpoint and a pixel value correction unit configured to correct a pixel value of the image data corresponding to the target viewpoint based on the correction parameter. Moreover, the information processing apparatus further has an image composition unit configured to generate composed image data based on the image data whose pixel value has been corrected.Type: ApplicationFiled: December 4, 2019Publication date: June 18, 2020Inventor: Tatsuro Koizumi
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Patent number: 10628993Abstract: A system comprises an obtainment unit that obtains virtual viewpoint information relating to a position and direction of a virtual viewpoint; a designation unit that designates a focus object from a plurality of objects detected based on at least one of the plurality of images captured by the plurality of cameras; a decision unit that decides an object to make transparent from among the plurality of objects based on a position and direction of a virtual viewpoint that the virtual viewpoint information obtained by the obtainment unit indicates, and a position of the focus object designated by the designation unit; and a generation unit that generates, based on the plurality of captured images obtained by the plurality of cameras, a virtual viewpoint image in which the object decided by the decision unit is made to be transparent.Type: GrantFiled: September 22, 2017Date of Patent: April 21, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Kazuhiro Yoshimura, Kaori Taya, Shugo Higuchi, Tatsuro Koizumi
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Patent number: 10559095Abstract: There is provided with an image processing apparatus. A determination unit determines color information of an object present in an object image from a virtual viewpoint. The color information of the object is determined by combining color information of the object in a captured image obtained by one or more image capturing apparatus selected based on position and orientation information of the virtual viewpoint, position and orientation information of the image capturing apparatuses, and position information of the object, by using a weight corresponding to an image capturing direction of the one or more image capturing apparatus and a position of the object in a field of view of the one or more image capturing apparatus.Type: GrantFiled: August 25, 2017Date of Patent: February 11, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Kazuhiro Yoshimura, Tatsuro Koizumi
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Patent number: 10460461Abstract: The invention comprises a depth-image generator which, based on shape information representing a shape of an object in the captured images of the cameras, generates depth images corresponding to the captured images obtained from a plurality of cameras; a detector which, based on a generated depth image, detects a boundary region of the object in a corresponding captured image; a pixel map generator which, based on the boundary region in the captured image detected by the detector, generates a pixel map representing a contributing ratio for generating the virtual-viewpoint image for each pixel position of the captured image; and an output-image generator which generates the virtual-viewpoint image based on the captured images obtained from the plurality of cameras, and the pixel map corresponding to the captured images.Type: GrantFiled: August 11, 2017Date of Patent: October 29, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Shugo Higuchi, Tatsuro Koizumi
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Publication number: 20190259169Abstract: Coordinates on a two-dimensional image that respectively correspond to points on a three-dimensional space that configures an object included in a field of view based on a viewpoint are specified. A depth map is generated based on a result of assignment processing that assigns distance information of a first point corresponding to first coordinates to a first area including the first coordinates and assigns distance information of a second point corresponding to second coordinates to a second area including the second coordinates, the first and second coordinates belonging to coordinates on the two-dimensional image. A distance from the viewpoint to the first point is longer than a distance from the viewpoint to the second point, and the first area is smaller than the second area. The points configuring the object include the first and second points.Type: ApplicationFiled: May 6, 2019Publication date: August 22, 2019Inventors: Yoshinari HIGAKI, Tatsuro KOIZUMI, Tomohiro NISHIYAMA
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Patent number: 10339640Abstract: An image processing apparatus includes an acquisition unit, first and second correction units, first and second calculation units, and a determination unit. The acquisition unit acquires image data pieces obtained by temporally successively capturing images of an object. The first correction unit acquires first correction data by performing fluctuation correction on processing target image data using temporally neighboring image data pieces among the acquired image data pieces. The first calculation unit calculates, as first displacement data, an amount of displacement between reference and the processing target image data or the first correction data. The determination unit determines a moving object region. The second calculation unit calculates second displacement data by interpolating the first displacement data in the determined moving object region based on the first displacement data or the first correction data.Type: GrantFiled: August 4, 2017Date of Patent: July 2, 2019Assignee: Canon Kabushiki KaishaInventor: Tatsuro Koizumi
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Patent number: 10332268Abstract: Coordinates on a two-dimensional image that respectively correspond to points on a three-dimensional space that configures an object included in a field of view based on a viewpoint are specified. A depth map is generated based on a result of assignment processing that assigns distance information of a first point corresponding to first coordinates to a first area including the first coordinates and assigns distance information of a second point corresponding to second coordinates to a second area including the second coordinates, the first and second coordinates belonging to coordinates on the two-dimensional image. A distance from the viewpoint to the first point is longer than a distance from the viewpoint to the second point, and the first area is smaller than the second area. The points configuring the object include the first and second points.Type: GrantFiled: August 11, 2017Date of Patent: June 25, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Yoshinari Higaki, Tatsuro Koizumi, Tomohiro Nishiyama
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Patent number: 10325378Abstract: An image processing apparatus includes: an acquisition unit configured to acquire pieces of silhouette image data of an object viewed from multiple different viewpoints; a generation unit configured to generate, from the pieces of silhouette image data, pieces of low-resolution data representing images with a resolution lower than the pieces of silhouette image data; and an estimation unit configured to, by performing, for a plurality of line segments in space containing the object, processing in which, after a line segment in the space is projected onto a piece of low-resolution data to calculate a first intersection of the line segment with the object, the line segment is projected onto a piece of silhouette image data to calculate a second intersection of the line segment with the object, calculate intervals over which the plurality of line segments intersect the object and estimate a shape of the object.Type: GrantFiled: September 27, 2017Date of Patent: June 18, 2019Assignee: Canon Kabushiki KaishaInventor: Tatsuro Koizumi
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Publication number: 20190098278Abstract: An image processing apparatus includes: an image obtaining unit configured to obtain images of an image capturing target area from a plurality of directions; an information obtaining unit configured to obtain viewpoint information; a determination unit configured to determine a pixel value of a particular area in a virtual viewpoint image according to a virtual viewpoint at a first time indicated by the viewpoint information, based on a pixel value of an obtained image based on image capturing by a first image capturing apparatus at a second time, and a pixel value of an obtained image based on image capturing by a second image capturing apparatus at the first time, wherein the particular area is not captured by the first image capturing apparatus at the first time; and a generation unit configured to generate a virtual viewpoint image in accordance with the determination of the pixel value.Type: ApplicationFiled: September 17, 2018Publication date: March 28, 2019Inventor: Tatsuro Koizumi
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Patent number: 10225537Abstract: The image processing apparatus according to an embodiment of the present invention corrects a color blur of a refocus image due to light field data. The image processing apparatus includes a generation unit configured to generate a refocus image for each channel at a virtual refocus position based on light field data including a plurality of channels whose wavelengths are different and optical characteristics for each channel of an optical system used to obtain the light field data. Further, the image processing apparatus includes a derivation unit configured to derive spatial frequency characteristics for each channel from the optical characteristics for each channel and the virtual refocus position and a correction unit configured to correct the refocus image for each channel so as to make sharpness uniform based on the spatial frequency characteristics for each channel.Type: GrantFiled: August 10, 2017Date of Patent: March 5, 2019Assignee: CANON KABUSHIKI KAISHAInventor: Tatsuro Koizumi
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Patent number: 10074189Abstract: An image processing apparatus includes an acquisition unit, a first calculation unit, a combination unit, a second calculation unit, and a correction unit. The acquisition unit acquires a plurality of pieces of image data captured sequentially in time series. The first calculation unit calculates a first displacement between one piece of image data among the plurality of pieces of image data and a piece of image data adjacent in time series to the one piece of image data. The combination unit combines a plurality of first displacements to obtain a second displacement between the one piece of image data and a piece of image data neighboring the one piece of image data in time series. The second calculation unit calculates a correction amount for the one piece of image data based on the second displacement. The one piece of image data is corrected based on the calculated correction amount.Type: GrantFiled: January 9, 2017Date of Patent: September 11, 2018Assignee: Canon Kabushiki KaishaInventor: Tatsuro Koizumi
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Publication number: 20180096520Abstract: A system comprises an obtainment unit that obtains virtual viewpoint information relating to a position and direction of a virtual viewpoint; a designation unit that designates a focus object from a plurality of objects detected based on at least one of the plurality of images captured by the plurality of cameras; a decision unit that decides an object to make transparent from among the plurality of objects based on a position and direction of a virtual viewpoint that the virtual viewpoint information obtained by the obtainment unit indicates, and a position of the focus object designated by the designation unit; and a generation unit that generates, based on the plurality of captured images obtained by the plurality of cameras, a virtual viewpoint image in which the object decided by the decision unit is made to be transparent.Type: ApplicationFiled: September 22, 2017Publication date: April 5, 2018Inventors: Kazuhiro YOSHIMURA, Kaori TAYA, Shugo HIGUCHI, Tatsuro KOIZUMI
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Publication number: 20180098047Abstract: There is provided with an imaging system. The imaging system has a plurality of image capturing apparatuses. The plurality of image capturing apparatuses are configured to obtain captured images to generate a free-viewpoint image. The plurality of image capturing apparatuses include a first group of one or more image capturing apparatuses facing a first gaze point and a second group of one or more image capturing apparatuses facing a second gaze point different from the first gaze point.Type: ApplicationFiled: September 15, 2017Publication date: April 5, 2018Inventors: Kina ITAKURA, Tatsuro KOIZUMI, Kaori TAYA, Shugo HIGUCHI
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Publication number: 20180089849Abstract: An image processing apparatus includes: an acquisition unit configured to acquire pieces of silhouette image data of an object viewed from multiple different viewpoints; a generation unit configured to generate, from the pieces of silhouette image data, pieces of low-resolution data representing images with a resolution lower than the pieces of silhouette image data; and an estimation unit configured to, by performing, for a plurality of line segments in space containing the object, processing in which, after a line segment in the space is projected onto a piece of low-resolution data to calculate a first intersection of the line segment with the object, the line segment is projected onto a piece of silhouette image data to calculate a second intersection of the line segment with the object, calculate intervals over which the plurality of line segments intersect the object and estimate a shape of the object.Type: ApplicationFiled: September 27, 2017Publication date: March 29, 2018Inventor: Tatsuro Koizumi
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Publication number: 20180061069Abstract: Coordinates on a two-dimensional image that respectively correspond to points on a three-dimensional space that configures an object included in a field of view based on a viewpoint are specified. A depth map is generated based on a result of assignment processing that assigns distance information of a first point corresponding to first coordinates to a first area including the first coordinates and assigns distance information of a second point corresponding to second coordinates to a second area including the second coordinates, the first and second coordinates belonging to coordinates on the two-dimensional image. A distance from the viewpoint to the first point is longer than a distance from the viewpoint to the second point, and the first area is smaller than the second area. The points configuring the object include the first and second points.Type: ApplicationFiled: August 11, 2017Publication date: March 1, 2018Inventors: Yoshinari Higaki, Tatsuro Koizumi, Tomohiro Nishiyama