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公开(公告)号：US20230368487A1
公开(公告)日：2023-11-16
申请号：US18360958
申请日：2023-07-28
Inventor： YOSHIFUMI KARIATSUMARI , YUMIKO KATO , ATSUSHI ISHIKAWA
IPC: G06V10/25 , G06T5/20 , G06T9/00 , G06V10/764 , G06V20/68
CPC classification number: G06V10/25 , G06T5/20 , G06T9/00 , G06V10/764 , G06V20/68 , G06V2201/07 , G06T2207/10036
Abstract: A method for detecting a foreign object on or in an object, the method being executed by a computer, includes acquiring image data of the object including information regarding four or more bands, extracting, for individual regions of the object, partial image data corresponding to at least one band among the four or more bands from the image data, performing, for each region, a detection operation for detecting, based on the partial image data, a foreign object on or in the object, and outputting data representing a detection result. The at least one band is selected in accordance with each of the regions.
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公开(公告)号：US20230362462A1
公开(公告)日：2023-11-09
申请号：US18357113
申请日：2023-07-22
Inventor： TAKAYUKI KIYOHARA , MOTOKI YAKO , ATSUSHI ISHIKAWA
CPC classification number: H04N23/10 , G06T7/80 , G01J3/2823 , G06T2200/24 , G01J2003/2826
Abstract: An imaging system is an imaging system using a compressed sensing technology, and includes a filter array including types of filters different from one another in transmission spectrum, an image sensor that generates image data based on light that passes through the filter array, a processing circuit that generates hyperspectral image data including images corresponding to four or more bands included in a target wavelength region on the basis of the image data and a reconstruction table decided on the basis of a spatial distribution of the transmission spectra of the types of filters, and a light source that emits reference light used for calibration for correcting the reconstruction table and having a wavelength of at least one of the four or more bands, and the processing circuit corrects the reconstruction table on the basis of reference image data which the image sensor generates by detecting the reference light.
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13.发明公开公开(公告)号：US20230238413A1
公开(公告)日：2023-07-27
申请号：US18194669
申请日：2023-04-03
Inventor： YOSHIKAZU YAMAOKA , MOTOKI YAKO , ATSUSHI ISHIKAWA , CHIKAI HOSOKAWA , TAKU HIRASAWA
IPC: H01L27/146 , G01J3/28 , G02B5/20 , H04N25/13
CPC classification number: H01L27/14625 , G01J3/2823 , G02B5/201 , H01L27/14618 , H01L27/1462 , H01L27/14627 , H01L27/14645 , H01L27/14685 , H04N25/135 , G01J2003/2826 , G02B1/11
Abstract: A light detecting device is provided with: a filter array including filters arranged two-dimensionally, each of the filters having a light-incident surface and a light-emitting surface, the filters including multiple types of filters having mutually different transmission spectra; and an image sensor having a light-detecting surface facing the light-emitting surface, the image sensor being provided with light-detecting elements arranged two-dimensionally on the light-detecting surface, wherein the distance between the light-emitting surface and the light-detecting surface is different for each of the filters.
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公开(公告)号：US20230069927A1
公开(公告)日：2023-03-09
申请号：US18048458
申请日：2022-10-21
Inventor： MOTOKI YAKO , ATSUSHI ISHIKAWA , KAZUYA HISADA
Abstract: A filter array includes filters disposed in a two-dimensional plane and having different transmission spectra. The filters include a first filter with a transmission spectrum having a first peak group including first and second peaks adjacent to each other, and at least one second filter with a transmission spectrum having a second peak group including third and fourth peaks adjacent to each other. Of peaks included in the second peak group, the third peak has a wavelength closest to a wavelength at the first peak. A first interval between the wavelength at the first peak and a wavelength at the second peak is different from a second interval between the wavelength at the third peak and a wavelength at the fourth peak. ΔFSR/σ≥0.25, where ΔFSR denotes an absolute value of a difference between the first and second intervals and σ denotes a half-width of the first peak.
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公开(公告)号：US20220368865A1
公开(公告)日：2022-11-17
申请号：US17814963
申请日：2022-07-26
Inventor： MOTOKI YAKO , ATSUSHI ISHIKAWA , KAZUYA HISADA
Abstract: An imaging apparatus includes an image sensor, a filter array disposed on an optical path from a target object to the image sensor and including two-dimensionally-arranged optical filters, and a processing circuit that generates at least four pieces of spectral image data based on an image acquired by the image sensor. The optical filters include various types of optical filters with different spectral transmittance. Each of the at least four pieces of spectral image data indicates an image corresponding to one of at least four wavelength bands. The filter array includes at least one characteristic section. The processing circuit detects a relative position between the filter array and the image sensor based on the at least one characteristic section in the image acquired by the image sensor, and compensates for deviation between the relative position and a preliminarily-set relative position when the processing circuit detects the deviation.
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Patent Agency Ranking
公开(公告)号：US20220239870A1
公开(公告)日：2022-07-28
申请号：US17718428
申请日：2022-04-12
Inventor： YASUHISA INADA , ATSUSHI ISHIKAWA , MOTOKI YAKO
Abstract: A filter array according to one aspect of the present disclosure is provided with filters arranged two-dimensionally. The filters include multiple types of first filters having mutually different transmission spectra, of which each transmission spectrum includes first peaks, and multiple types of second filters having mutually different transmission spectra, of which each transmission spectrum includes one or more second peaks. The number of the first peaks in the transmission spectrum of each of the multiple types of first filters is greater than the number of the one or more second peaks in the transmission spectrum of each of the multiple types of second filters, and the multiple types of first filters and the multiple types of second filters are disposed in a mixed arrangement.
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公开(公告)号：US20210318171A1
公开(公告)日：2021-10-14
申请号：US17354948
申请日：2021-06-22
Inventor： YASUHISA INADA , ATSUSHI ISHIKAWA
Abstract: An optical filter includes a filter array including filters two-dimensionally arrayed and a band-pass filter. The filters includes first and second filters. A transmission spectrum of each of the first and second filters has local maximum values of transmittance at three or more wavelengths included in a first wavelength region. The band-pass filter passes light in a second wavelength region including two or more wavelengths of the three or more wavelengths and not including one or more wavelengths of the three or more wavelengths. The filter array and the band-pass filter are disposed so that (a) the band-pass filter is located on an optical path of light that passes through the first and second filters or (b) the first and second filters are located on an optical path of light that passes through the band-pass filter.
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公开(公告)号：US20240314409A1
公开(公告)日：2024-09-19
申请号：US18675123
申请日：2024-05-27
Inventor： MOTOKI YAKO , ATSUSHI ISHIKAWA
Abstract: A device used in a system for generating spectral images corresponding to four or more wavelength bands includes optical filters different in spectral transmittance and an image sensor that detects light through the optical filters, in which when the wavelength bands are given numbers in an ascending or descending order of a central wavelength, the image sensor outputs i-th mask data by detecting only light corresponding to an i-th wavelength band and outputs j-th mask data by detecting only light corresponding to a j-th wavelength band among the wavelength bands, a correlation coefficient between the i-th and j-th mask data is greater than or equal to 0.8 in a combination where |i−j| is 1, and is equal to or less than 0.8 in at least one combination where |i−j| is greater than or equal to 2 and less than or equal to N−1.
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公开(公告)号：US20230414166A1
公开(公告)日：2023-12-28
申请号：US18464221
申请日：2023-09-10
Inventor： KEIKO YUGAWA , YUMIKO KATO , MOTOKI YAKO , ATSUSHI ISHIKAWA
CPC classification number: A61B5/444 , A61B5/7435 , A61B5/0077 , G06T7/0012 , G06T2207/30088
Abstract: A method for evaluating a user's skin condition, the method being performed by a computer, includes acquiring image data concerning part of the user's body and including information for four or more bands, determining an evaluation region in the part of the user's body in an image representing the part of the user's body in accordance with an input from the user, and generating, based on the image data, and outputting evaluation data representing an evaluation result of skin condition in the evaluation region.
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公开(公告)号：US20230079297A1
公开(公告)日：2023-03-16
申请号：US18058043
申请日：2022-11-22
Inventor： MOTOKI YAKO , ATSUSHI ISHIKAWA
Abstract: A signal processing method is performed by a computer. The signal processing method includes: obtaining first compressed image data including hyperspectral information and indicating a two-dimensional image in which the hyperspectral information is compressed, the hyperspectral information being luminance information on each of at least four wavelength bands included in a target wavelength range; extracting partial image data from the first compressed image data; and generating first two-dimensional image data corresponding to a first wavelength band and second two-dimensional image data corresponding to a second wavelength band from the partial image data.
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