-
公开(公告)号：US09645074B2
公开(公告)日：2017-05-09
申请号：US14604858
申请日：2015-01-26
Inventor： Katsuhiro Kanamori
CPC classification number: G01N21/21 , G01N2021/1765 , G01N2021/216 , G02B21/365
Abstract: An image processing apparatus includes an illumination unit in which illumination axes of first and second illumination light substantially coincide with an imaging axis and which illuminates an object with the first and second illumination light alternately, the first and second illumination light being respectively polarized in a first direction and a second direction that crosses the first direction; a splitter that divides returning light into at least two returning light components; and first and second polarization imaging devices that receive the returning light components. The first polarization imaging device obtains first and second polarization images polarized in the first direction while the object is being illuminated with the first and second illumination light, respectively. The second polarization imaging device obtains third and fourth polarization images polarized in the second direction while the object is being illuminated with the first and second illumination light, respectively.
-
公开(公告)号：US11017225B2
公开(公告)日：2021-05-25
申请号：US16275855
申请日：2019-02-14
Inventor： Katsuhiro Kanamori
Abstract: An image synthesizing apparatus includes an illuminating device that outputs linearly polarized light having a first polarization direction and linearly polarized light having a second polarization direction, a camera that captures an image in a third polarization direction including a plurality of pixels and an image in a fourth polarization direction including a plurality of pixels, and a control circuit that synthesizes, on a pixel-by-pixel basis, the image in the third polarization direction and the image in the fourth polarization direction into an authentication image for iris authentication. The first, the second, the third and the fourth polarization directions are different from one another. The camera acquires the image in the third polarization direction using the linearly polarized light in the first polarization direction and acquires the image in the fourth polarization direction using the linearly polarized light in the second polarization direction.
-
公开(公告)号：US10824859B2
公开(公告)日：2020-11-03
申请号：US16284197
申请日：2019-02-25
Inventor： Katsuhiro Kanamori
Abstract: An authentication apparatus includes: an illumination device outputting light having a first polarization direction; a camera taking a first eyeball image, a second eyeball image, and a third eyeball image, of the user, which have a second polarization direction, a third polarization direction, a fourth polarization direction, respectively; and a control circuit. The control circuit (a) acquires cornea authentication information and iris authentication information, (b) generates an amplitude image, a phase image, and an average image, using the first eyeball image, the second eyeball image, and the third eyeball image, (c) authenticates a user ID corresponding to the average image, by referring to the iris authentication information, (d) authenticates a user ID corresponding to the amplitude image and the phase image, by referring to the cornea authentication information, and (e) determines a user ID corresponding to the user, using authentication results of the user ID in (c) and (d).
-
公开(公告)号：US10097744B2
公开(公告)日：2018-10-09
申请号：US15795481
申请日：2017-10-27
Inventor： Katsuhiro Kanamori , Jun Ozawa
Abstract: An image forming apparatus includes an illumination device, a beam splitter, an imaging device, and an image forming circuit. The illumination device includes first emitters emitting first light polarized at 30°, second emitters emitting second light polarized at 90°, and third emitters emitting third light polarized at 150°, and illuminates a subject with the first, second, and/or third light. The beam splitter splits returning light and outputs a first component polarized at 0°, a second component polarized at 60°, and a third component polarized at 120°. The imaging device has an imaging surface that includes a first region receiving the first component, a second region receiving the second component, and a third region receiving the third component. The image forming circuit generates an image of the subject based on first, second, and third groups of images acquired when the subject is illuminated with the first, second, and third light.
-
Patent Agency Ranking
公开(公告)号：US10088409B2
公开(公告)日：2018-10-02
申请号：US15792804
申请日：2017-10-25
Inventor： Katsuhiro Kanamori , Jun Ozawa
Abstract: Images are formed from first and second polarized images acquired through illumination of the subject with first illumination light beams, and third and fourth polarized images acquired through illumination of the subject with second illumination light beams. Images of a subject are formed from translated first, second, third, and fourth polarized images, acquired from first and second luminous point images. The first bright spots appear on the first polarized image when the first illumination light beams are mirror-reflected off the subject. The second bright spots appear on the fourth polarized image when the second illumination light beams are mirror-reflected off the subject. The image forming circuit forms images of the subject by calculating a difference between a first average image, obtained by averaging the translated first and fourth polarized images, and a second average image, obtained by averaging the translated second and third polarized images.
-
公开(公告)号：US09307159B2
公开(公告)日：2016-04-05
申请号：US14616998
申请日：2015-02-09
Inventor： Katsuhiro Kanamori
CPC classification number: H04N5/2354 , B60S1/0844 , G01N21/21 , G01N2021/177 , G02B27/286 , G02F1/0136
Abstract: A polarization image processing apparatus includes an illumination unit, a splitter, first and second polarization imaging devices, and a processing unit. The illumination unit illuminates a first surface of a transparent or translucent object with first illumination light polarized in a first direction and second illumination light polarized in a second direction, which crosses the first direction, alternately. Illumination axes of the first illumination light and second illumination light substantially coincide with an imaging axis of the polarization image processing apparatus. The splitter divides returning light into at least two light components. The first and second polarization imaging devices receive the light components. The processing unit detects a condition of a second surface of the object on the basis of first and second polarization images obtained by the first polarization imaging device and third and fourth polarization images obtained by the second polarization imaging device.
Abstract translation: 偏振图像处理装置包括照明单元，分离器，第一和第二偏振成像装置以及处理单元。 照明单元以第一方向偏振的第一照明光和与第一方向交叉的第二方向偏振的第二照明光照亮透明或半透明物体的第一表面。 第一照明光和第二照明光的照明轴基本上与偏振图像处理装置的成像轴一致。 分离器将返回的光分成至少两个光分量。 第一和第二偏振成像装置接收光分量。 处理单元基于由第一偏振成像装置获得的第一和第二极化图像以及由第二偏振成像装置获得的第三和第四极化图像来检测物体的第二表面的状态。
-
公开(公告)号：US09808147B2
公开(公告)日：2017-11-07
申请号：US14542771
申请日：2014-11-17
Inventor： Katsuhiro Kanamori
IPC: A62B1/04 , H04N9/47 , A61B1/06 , G02B23/26 , H04N5/225 , A61B1/00 , H04N5/235 , H04N9/04 , H01L27/146 , A61B1/04 , G02B5/20 , G02B5/30 , G02B23/24 , G02B27/28
CPC classification number: A61B1/0646 , A61B1/00009 , A61B1/04 , G02B5/201 , G02B5/3083 , G02B23/2407 , G02B23/2461 , G02B23/2484 , G02B23/26 , G02B27/285 , H01L27/14627 , H01L27/14629 , H04N5/2254 , H04N5/2256 , H04N5/2354 , H04N9/045
Abstract: An image processing apparatus according to the present disclosure includes an illuminating section which sequentially irradiates an object with first and second illuminating light beams polarized in first and second directions. First and second polarization images are generated based on signals representing light transmitted through polarizers having the polarization transmission axis in respective directions that are parallel to, and intersect with, the first direction while the object is being irradiated with the first illuminating light beam, and third and fourth polarization images are generated based on signals representing light transmitted through polarizers having the polarization transmission axis in respective directions that are parallel to, and intersect with, the second direction while the object is being irradiated with the second illuminating light beam. A depressed object surface region is detected based on the first and second polarization images and/or the third and fourth polarization images.
-
公开(公告)号：US09601532B2
公开(公告)日：2017-03-21
申请号：US14676753
申请日：2015-04-01
Inventor： Katsuhiro Kanamori , Toshinobu Matsuno , Teruhiro Shiono
IPC: H01L27/146 , G02B26/00 , G02B5/30
CPC classification number: H01L27/14621 , G02B5/3058 , G02B26/001 , H01L27/14625 , H01L27/14627 , H01L27/14643
Abstract: The present disclosure is an optical filter which includes: a Fabry-Perot resonator equipped with a laminated structure including one sheet of first metal layer, one sheet of second metal layer, and a dielectric layer; and one sheet of plate-shaped wire grid polarizer. The second metal layer is parallel to the first metal layer, the dielectric layer is interposed between the first metal layer and the second metal layer, the one sheet of plate-shaped wire grid polarizer is embedded in the dielectric layer, the one sheet of plate-shaped wire grid polarizer comprises three or more metal wire layers, the metal wire layers are parallel to one another, and the one sheet of plate-shaped wire grid polarizer is parallel to the first metal layer. In the optical filter according to the present invention, the effective extinction ratio of the wire grid polarizer is increased.
-
公开(公告)号：US10307057B2
公开(公告)日：2019-06-04
申请号：US15885910
申请日：2018-02-01
Inventor： Katsuhiro Kanamori
Abstract: An eye imaging apparatus includes a lighting device including a fundus illuminator and a cornea illuminator; a half mirror; an imaging device including a camera having a first objective lens; and a first polarizer. The first polarizer is disposed between the half mirror and the camera. The fundus illuminator irradiates the half mirror with first light polarized in a direction orthogonal to a transmission axis of the first polarizer. The half mirror receives the first light and outputs resulting light to an eye. A travel direction of the resulting light is in alignment with an optical axis of the first objective lens. The cornea illuminator emits light at a timing different from an emission timing of the first light, and the eye is irradiated with second light based on the light emitted by the cornea illuminator from a direction different from a direction parallel with the optical axis.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.02 seconds)
