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公开(公告)号：US20210174127A1
公开(公告)日：2021-06-10
申请号：US16770908
申请日：2018-10-12
Applicant: SONY CORPORATION
Inventor： HAJIME MIHARA , SHUN KAIZU , TEPPEI KURITA , YUHI KONDO , YASUTAKA HIRASAWA
Abstract: A polarized image acquisition section 11a acquires a polarized image of a target object having one or more polarization directions. A polarization parameter acquisition section 12-1 calculates the average brightness α of a polarization model on the basis of a non-polarized image subjected to sensitivity correction. Further, the polarization parameter acquisition section 12-1 calculates the amplitude β of the polarization model on the basis of the calculated average brightness α, pre-stored information regarding the zenith angle θ of the normal line of the target object, a refractive index r, and reflectance property information indicative of whether a subject is diffuse reflection or specular reflection. A polarization model detection section 13-1 is able to detect the polarization properties of the target object through the use of an image polarized in one or more polarization directions, by calculating the phase ϕ of the polarization model on the basis of a polarized image of the target object having one or more polarization directions, the average brightness α, and the amplitude β of the polarization model.
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公开(公告)号：US20190273856A1
公开(公告)日：2019-09-05
申请号：US16340604
申请日：2017-10-26
Applicant: SONY CORPORATION
Inventor： YASUTAKA HIRASAWA , YUHI KONDO , HIDEKI OYAIZU , SHUN KAIZU , TEPPEI KURITA , TUO ZHUANG , YING LU , HAJIME MIHARA
Abstract: An image processing device and a method that enable removal of reflection component light from images captured from various directions are provided. The image processing device includes: an image input unit that acquires at least three types of images formed with polarization images of different polarizing directions or non-polarization images; an angle input unit that outputs reflection angles that are the angles between the image capturing directions of the acquired images and the plane direction corresponding to the normal direction of the reflecting surface, to an intensity transmittance and intensity reflectance calculation unit; a calculation unit that calculates the respective intensity transmittances and the respective intensity reflectances of S waves and P waves, using the reflection angles; and a reflection component separation unit that removes the reflected light component from the images acquired by the image input unit, using the respective intensity transmittances and the respective intensity reflectances of the S waves and P waves. These processes enable removal of reflected light components from captured images having various reflection angles.
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公开(公告)号：US20210281786A1
公开(公告)日：2021-09-09
申请号：US16324937
申请日：2017-06-13
Applicant: SONY CORPORATION
Inventor： TEPPEI KURITA , SHUN KAIZU , YUHI KONDO , YASUTAKA HIRASAWA
Abstract: A polarization imaging section 20 includes polarized pixels in each of a plurality of polarization directions. The polarization imaging section 20 includes a polarizer. The polarization imaging section 20 outputs image signals of a polarized image to a defect detecting section 35 of an image processing section 30. In a case where a difference between a pixel value of a target polarized pixel generated by the polarization imaging section and a pixel value of the target polarized pixel estimated from polarization characteristics corresponding to pixel values of peripheral pixels in a polarization direction different from a polarization direction of the target polarized pixel is greater than a predetermined allowable range, the defect detecting section 35 determines that the target polarized pixel is a defective pixel. Therefore, it is possible to detect a defect of a pixel in the polarization imaging section that generates the polarized image.
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Patent Agency Ranking
公开(公告)号：US20210201450A1
公开(公告)日：2021-07-01
申请号：US17048762
申请日：2019-01-31
Applicant: SONY CORPORATION
Inventor： TEPPEI KURITA , SHUN KAIZU , YASUTAKA HIRASAWA , YUHI KONDO
Abstract: A polarization imaging unit 20 generates, as polarization information, a polarization image including pixels in a plurality of polarization directions. An interpolation processing unit 31 of an information processor 30 performs interpolation processing using the polarization image obtained from the polarization imaging unit 20, and generates a polarization image for each polarization method. A polarization degree calculation unit 32 calculates, for example, a polarization degree for each pixel as object surface information on the basis of the polarization image for each polarization method. A noise amount calculation unit 33 calculates a noise amount for each pixel on the basis of the polarization image for each polarization method and the like. A polarization degree correction unit 34 serves as an information correction unit, and corrects, according to the noise amount calculated by the noise amount calculation unit 33, the polarization degree that is object surface information calculated by the polarization degree calculation unit 32. The object surface information that is robust to noise can be obtained.
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公开(公告)号：US20210152749A1
公开(公告)日：2021-05-20
申请号：US17046456
申请日：2019-01-31
Applicant: SONY CORPORATION
Inventor： TEPPEI KURITA , SHUN KAIZU
Abstract: The polarization imaging unit 20 acquires a polarization image of a subject, and outputs the polarization image to the image processing unit 30. An interpolation processing unit 31 of the image processing apparatus 30 performs interpolation processing by using the polarization image acquired by the polarization imaging unit 20 to generate an image signal for each polarization component and each color component. A component image generation unit 32 calculates a specular reflection component and a diffuse reflection component for each pixel and for each color component, and generates, as component images, a specular reflection image representing the specular reflection components and a diffuse reflection image representing the diffuse reflection components. A target image generation unit 33 sets gain for each pixel of the component images by using a learned model on the basis of the component images. Furthermore, the target image generation unit 33 performs level adjustment of the component images for each pixel with the set gain, and generates a target image such as a high-texture image from the level-adjusted component images.
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6.发明申请公开(公告)号：US20210217191A1
公开(公告)日：2021-07-15
申请号：US16769159
申请日：2018-10-12
Applicant: SONY CORPORATION
Inventor： SHUN KAIZU , YASUTAKA HIRASAWA , TEPPEI KURITA
IPC: G06T7/593
Abstract: A local match processing section 361 of a parallax detecting section 36 generates a cost volume indicating a cost indicating, for each pixel and each parallax, the similarity between images acquired by imaging sections 21 and 22 that are different in viewpoint positions. A cost volume processing section 363 performs cost adjustment processing on a cost volume on the basis of a polarization image acquired by the imaging section 21, by using normal line information generated for each pixel by a normal line information generating section 31. A minimum value search processing section 365 detects, from the cost volume having undergone the cost adjustment processing, a parallax at which the similarity becomes maximum, by using the parallax-based costs of a parallax detection target pixel. A depth calculating section 37 generates depth information indicating depths of respective pixels on the basis of parallaxes detected, for the respective pixels, by the parallax detecting section 36. This enables detection of a parallax with high precision almost without the influences of an object shape, an image capturing condition, and the like.
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7.发明申请公开(公告)号：US20200350353A1
公开(公告)日：2020-11-05
申请号：US16763543
申请日：2018-09-18
Applicant: SONY CORPORATION
Inventor： TEPPEI KURITA , YING LU , YUHI KONDO , YASUTAKA HIRASAWA
IPC: H01L27/146 , H04N5/369
Abstract: An unpolarized component image generating section 32-1 generates unpolarized component image signals of specific and non-specific colors. A polarized component image generating section 33-1 generates polarized component image signals of the specific and non-specific colors. A specific color polarization property detecting section 34-1 detects polarization properties of the specific color using pixel signals of polarized or unpolarized pixels of the specific color having at least three polarization directions and pixel signals of polarized pixels having two polarization directions. An unpolarized color polarization property detecting section 35 detects polarization properties of the non-specific color on the basis of the polarization properties of the specific color detected by the specific color polarization property detecting section 34-1, the pixel signals of the unpolarized pixels of the non-specific color, and the pixel signals of the polarized pixels of the non-specific color having fewer polarization directions than the polarized pixels of the specific color. The polarization properties are thus detected for each color without recourse to the assumption that the degree of polarization is the same for each color.
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公开(公告)号：US20170155844A1
公开(公告)日：2017-06-01
申请号：US15320782
申请日：2015-06-23
Applicant: SONY CORPORATION
Inventor： DAISUKE ISO , HIDESHI YAMADA , TEPPEI KURITA
IPC: H04N5/232 , H04N5/347 , H04N5/3745 , H04N5/345
CPC classification number: H04N5/23274 , G03B7/00 , G03B17/00 , G03B2207/005 , G03B2217/005 , H04N5/23254 , H04N5/23258 , H04N5/23264 , H04N5/2353 , H04N5/345 , H04N5/347 , H04N5/3535 , H04N5/3745
Abstract: The present disclosure relates to an imaging apparatus, an imaging method and a program, and a reproduction apparatus according to which an image sensor is divided into a plurality of areas and exposure control may be performed for each area according to the amount of camera shake. An imaging apparatus which is an aspect of the present disclosure includes an image sensor unit for generating pixel data of a pixel constituting a frame by photoelectric conversion, a calculation unit for calculating an amount of camera shake in each of areas obtained by dividing the frame, and a control unit for controlling exposure time of the image sensor for each of the areas according to the amount of camera shake calculated for each of the areas. The present disclosure is applicable to an electronic device such as a camera including an area ADC type image sensor, for example.
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