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公开(公告)号：US09699386B2
公开(公告)日：2017-07-04
申请号：US14887884
申请日：2015-10-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
CPC classification number: H04N5/2354 , G06K9/00221 , G06K9/2027 , G06K9/4661 , G06T5/008 , G06T2200/04 , G06T2207/10028 , G06T2207/20012 , G06T2207/30201 , H04N5/2256 , H04N5/23219 , H04N9/045
Abstract: An image processing apparatus comprising: an obtaining unit configured to obtain a first image of an object shot with flashing of an illumination device and distance information of distances to a plurality of positions of the object; a determination unit configured to determine a position of a virtual light source that emits virtual light; and a processing unit configured to obtain shape information of the object based on the distance information, and generate an image in which the object is illuminated by the virtual light source by processing the first image based on the obtained shape information of the object, the distance information, and the position of the virtual light source with respect to the object.
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公开(公告)号：US09338419B2
公开(公告)日：2016-05-10
申请号：US14629976
申请日：2015-02-24
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
Abstract: An image processing apparatus is provided that allows accurate white balance gains to be obtained by accurately estimating the illuminant colors of various objects in an image. The white balance gains are obtained based on values of white pixels that have been extracted from an input image and have colors included in an extraction range, and the white balance gains are obtained based on specular reflection components included in the input image, are mixed in accordance with a mix ratio. The mix ratio is determined in accordance with, for example, a degree of reliability of extraction of the white pixels.
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公开(公告)号：US08988549B2
公开(公告)日：2015-03-24
申请号：US13922525
申请日：2013-06-20
Applicant: Canon Kabushiki Kaisha
Inventor： Kotaro Kitajima
IPC: H04N9/73
Abstract: An image processing apparatus is provided that allows accurate white balance gains to be obtained by accurately estimating the illuminant colors of various objects in an image. The white balance gains are obtained based on values of white pixels that have been extracted from an input image and have colors included in an extraction range, and the white balance gains are obtained based on specular reflection components included in the input image, are mixed in accordance with a mix ratio. The mix ratio is determined in accordance with, for example, a degree of reliability of extraction of the white pixels.
Abstract translation: 提供一种图像处理装置，其通过精确估计图像中的各种物体的光源颜色来获得准确的白平衡增益。 基于从输入图像提取并且包括在提取范围中的颜色并且基于输入图像中包括的镜面反射分量获得的白平衡增益的白色像素的值被获得白平衡增益， 按照混合比例。 混合比根据例如提取白色像素的可靠度而确定。
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公开(公告)号：US20130342724A1
公开(公告)日：2013-12-26
申请号：US13922525
申请日：2013-06-20
Applicant: Canon Kabushiki Kaisha
Inventor： Kotaro Kitajima
IPC: H04N9/73
Abstract: An image processing apparatus is provided that allows accurate white balance gains to be obtained by accurately estimating the illuminant colors of various objects in an image. The white balance gains are obtained based on values of white pixels that have been extracted from an input image and have colors included in an extraction range, and the white balance gains are obtained based on specular reflection components included in the input image, are mixed in accordance with a mix ratio. The mix ratio is determined in accordance with, for example, a degree of reliability of extraction of the white pixels.
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公开(公告)号：US11503219B2
公开(公告)日：2022-11-15
申请号：US16879260
申请日：2020-05-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
IPC: H04N5/235 , G06V10/42 , G06V10/44 , G06V10/56 , G06V10/60 , G06V40/16 , G06K9/62 , H04N5/262 , G06V10/46
Abstract: With respect to a subject included in an image, the illuminating condition by an ambient light source in an environment where the image was captured is estimated, and based on the estimation result, the effect of a virtual light source that was non-existent at the time of image capture is computed. More specifically, the effect of the virtual light source is computed using an illumination direction of the virtual light source and the reflective characteristics of the subject illuminated by the virtual light source, which have been determined based on the estimation result, and an image derived from addition of the effect of the virtual light source is output.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20220292878A1
公开(公告)日：2022-09-15
申请号：US17687432
申请日：2022-03-04
Applicant: CANON KABUSHIKI KAISHA
Inventor： Qiao Wang , Deyu Wang , Kotaro Kitajima , Naoko Watazawa , Tsewei Chen , Wei Tao , Dongchao Wen
Abstract: The present disclosure discloses an apparatus and a method for detecting a facial pose, an image processing system, and a storage medium. The apparatus comprises: an obtaining unit to obtain at least three keypoints of at least one face from an input image based on a pre-generated neural network, wherein coordinates of the keypoints obtained via a layer in the neural network for obtaining coordinates are three-dimensional coordinates; and a determining unit to determine, for the at least one face, a pose of the face based on the obtained keypoints, wherein the determined facial pose includes at least an angle. According to the present disclosure, the accuracy of the three-dimensional coordinates of the facial keypoints can be improved, thus the detection precision of a facial pose can be improved.
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27.发明授权公开(公告)号：US11115637B2
公开(公告)日：2021-09-07
申请号：US16716070
申请日：2019-12-16
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
Abstract: There is provided an image processing apparatus comprising. An identification unit identifies a target color that a pixel of a shot image corresponding to an object having a specific color is to have as a result of white balance processing performed on the shot image. A determination unit determines a target region of a virtual light source in the shot image. An image processing unit performs image processing for adding an effect of virtual light irradiation by the virtual light source to the target region. A control unit controls a color of the virtual light source such that a color close to the target color approaches the target color in the target region.
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公开(公告)号：US10694111B2
公开(公告)日：2020-06-23
申请号：US16203914
申请日：2018-11-29
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
Abstract: With respect to a subject included in an image, the illuminating condition by an ambient light source in an environment where the image was captured is estimated, and based on the estimation result, the effect of a virtual light source that was non-existent at the time of image capture is computed. More specifically, the effect of the virtual light source is computed using an illumination direction of the virtual light source and the reflective characteristics of the subject illuminated by the virtual light source, which have been determined based on the estimation result, and an image derived from addition of the effect of the virtual light source is output.
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公开(公告)号：US20200051212A1
公开(公告)日：2020-02-13
申请号：US16527169
申请日：2019-07-31
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
Abstract: There is provided an image processing apparatus. A setting unit sets a correction region in an object of an image. An acquisition unit acquires normal information relating to the correction region. A determination unit determines, based on the normal information, a parameter of a virtual light source that performs virtual light irradiation on the object. A correction unit corrects the image such that light irradiation by the virtual light source is applied.
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公开(公告)号：US10063826B2
公开(公告)日：2018-08-28
申请号：US15124529
申请日：2015-06-08
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kotaro Kitajima
CPC classification number: H04N9/77 , G03B7/08 , G03B7/28 , G06T5/002 , G06T5/008 , G06T2207/10024 , H04N9/07 , H04N9/735
Abstract: Disclosed is an image processing apparatus and a control method thereof that can correct the brightness of a pixel in an image. Reflection characteristics of environment light when the image is captured are estimated by applying smoothing to the image. The brightness of the pixel is corrected by computing a correction value for correcting the brightness of the pixel based on the reflection characteristics of the environment light and adding the correction value to the pixel. The brightness can be corrected while suppressing an amplification of noise and a loss of details of a subject.
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