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公开(公告)号：US09851530B2
公开(公告)日：2017-12-26
申请号：US15272617
申请日：2016-09-22
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Michio Cho
CPC classification number: G02B9/64 , G02B13/04 , G02B13/22 , G02B27/0025
Abstract: An imaging lens includes, in order from the object side, a first lens group fixed during focusing, a positive second lens group moved toward the object side during focusing from a distant to a close object, and a third lens group fixed during focusing and including one positive lens. The second group includes, in order from the object side, a first cemented lens including a biconvex lens and a negative lens having a smaller absolute value of curvature radius of the object-side surface than of the image-side surface, and a second cemented lens having a positive refractive power and including a negative lens having a smaller absolute value of curvature radius of the image-side surface than of the object-side surface and a positive lens having a smaller absolute value of curvature radius of the object-side surface than of the image-side surface. The imaging lens satisfies specific condition expressions.
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22.发明授权公开(公告)号：US09800774B2
公开(公告)日：2017-10-24
申请号：US14987246
申请日：2016-01-04
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Kenkichi Hayashi , Masahiko Sugimoto , Kosuke Irie
CPC classification number: H04N5/23212 , G06T5/003 , G06T5/20 , G06T2207/10004 , G06T2207/10016 , G06T2207/10024 , G06T2207/10148 , G06T2207/20024
Abstract: A first restoration processing section 110 and a second restoration processing section 120 perform restoration processing on images (luminance data Y), which are successively captured by an image capture section, using a first filter 102, which is a restoration filter generated corresponding to a point spread function of an optical system, and a second filter 104 of which a restoration strength is weaker than that of the first filter 102. Depending on a result of determination which is input from an in-focus determination section 150 and indicates whether or not the image at the current time point is in a target in-focus state, a selection section 122 selects and outputs either luminance data YA which is processed using the first filter 102 or luminance data YB which is processed using the second filter 104.
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公开(公告)号：US09710895B2
公开(公告)日：2017-07-18
申请号：US14989336
申请日：2016-01-06
Applicant: FUJIFILM Corporation
Inventor： Kenkichi Hayashi , Masahiko Sugimoto , Yousuke Naruse , Kosuke Irie
CPC classification number: G06T5/003 , G06K9/4661 , G06K9/6215 , G06T2207/20024 , G06T2207/20192 , G06T2207/20201 , H04N5/2353
Abstract: Source image data is subjected to a logarithmic process (gamma correction process) (S11), and the luminance distribution of source image data is acquired (S12). Then, it is determined whether or not the luminance distribution of source image data corresponds to “a high luminance scene (highlight scene) biased toward a high luminance side” based on a characteristic of a luminance value equal to or greater than a first threshold value in the luminance distribution of source image data (S13). According to the determination result (Y/N of S13), a restoration process based on a point spread function of an optical system is controlled (S14, S15). A restoration filter which is used in the restoration process has a filter coefficient corresponding to image data before the logarithmic process.
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24.发明授权Image-processing device, image-capturing device, image-processing method, and recording medium 有权图像处理装置，图像捕获装置，图像处理方法和记录介质公开(公告)号：US09357107B2
公开(公告)日：2016-05-31
申请号：US14672877
申请日：2015-03-30
Applicant: FUJIFILM Corporation
Inventor： Masahiko Sugimoto , Kenkichi Hayashi , Yousuke Naruse
IPC: G06K9/40 , H04N5/217 , H04N19/117 , H04N19/136 , H04N19/86 , G06T3/40 , G06T5/00 , G06T5/10 , G06T5/20 , H04N1/60 , H04N5/357
CPC classification number: H04N5/217 , G06T3/4023 , G06T5/002 , G06T5/009 , G06T5/10 , G06T5/20 , G06T2207/20024 , G06T2207/20182 , G06T2207/20192 , H04N1/4092 , H04N1/6027 , H04N5/3572 , H04N19/117 , H04N19/136 , H04N19/86
Abstract: According to an aspect of the present invention, for which of the original image data before the gradation correction and the original image data after the gradation correction the restoration process is performed is determined depending on whether or not the image information meets the condition under which the ringing appears in the recovery image data due to the restoration process. When the gradation correction is performed after the restoration process, there is a probability that the side effect (the ringing or the like) of the restoration process is emphasized by the gradation correction. Therefore, in the case where the image information meets the condition under which the ringing appears, it is possible to prevent such a side effect (the ringing or the like) of the restoration process from being emphasized by the gradation correction, by performing the restoration process for the original image data after the gradation correction.
Abstract translation: 根据本发明的一个方面，对灰度校正前的原始图像数据和灰度校正后的原始图像数据中的哪一个进行恢复处理，根据图像信息是否满足以下条件来确定： 由于恢复过程，恢复图像数据中出现振铃。 当在恢复处理之后执行灰度校正时，存在通过灰度校正强调恢复处理的副作用（振铃等）的概率。 因此，在图像信息满足出现振铃的条件的情况下，可以防止恢复处理的这种副作用（振铃等）被灰度校正强调，通过执行恢复 对灰度校正后的原始图像数据进行处理。
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25.发明授权公开(公告)号：US10817995B2
公开(公告)日：2020-10-27
申请号：US16281109
申请日：2019-02-21
Applicant: FUJIFILM Corporation
Inventor： Takashi Kunugise , Yousuke Naruse , Kenkichi Hayashi
Abstract: Provided are an image processing device, an image processing system, an image processing method, and an imaging optical system group capable of suppressing an increase in costs and appropriately restoring an image. In the imaging optical system, in a case where a first MTF curve M1 indicating an MTF value in a first azimuth direction with respect to an amount of defocus from a focal position is compared with a second MTF curve M2 indicating an MTF value in a second azimuth direction with respect to the amount of defocus from the focal position, a ratio of a peak value P1 of the first MTF curve M1 to a peak value P2 of the second MTF curve M2 is equal to or greater than 2, and a ratio of a half-value width HW2 of the second MTF curve M2 to a half-value width HW1 of the first MTF curve M1 is equal to or greater than 1.25. The restoration filter is a common filter corresponding to a representative value of transfer functions in a plurality of same type imaging optical systems.
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Patent Agency Ranking
公开(公告)号：US10748256B2
公开(公告)日：2020-08-18
申请号：US16110164
申请日：2018-08-23
Applicant: FUJIFILM Corporation
Inventor： Kenkichi Hayashi , Yousuke Naruse , Yasunobu Kishine
Abstract: Provided are an image processing device, an imaging device, and an image processing method which are capable of obtaining a captured image with desired image quality. An image processing unit functioning as an image processing device includes a point image restoration processing unit that performs point image restoration processing using a restoration filter based on a point spread function of a lens unit on image data obtained from an imaging element through imaging of a subject using an imaging unit having a lens unit including a lens and the imaging element, and a determination unit that determines whether or not to perform the point image restoration processing using the point image restoration processing unit based on spherical aberration of the lens changed by an imaging condition. The point image restoration processing unit performs the point image restoration processing only in a case where the determination unit determines to perform the point image restoration processing.
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公开(公告)号：US10049438B2
公开(公告)日：2018-08-14
申请号：US15462379
申请日：2017-03-17
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Kenkichi Hayashi
IPC: G06T5/20
Abstract: Further, there are provided a filter acquisition apparatus, a filter acquisition method, a program, and a recording medium, capable of acquiring a filter which is suitably usable in such a filtering process. An image processing apparatus 35 includes a filtering process unit 41 that performs an image filtering process that has a plurality of times of filtering processes. The filtering process unit 41 applies a filter to processing target data to acquire filter application process data, applies a gain to the filter application process data to acquire gain application process data, in each filtering process. In each filtering process, the gain applied to the filter application process data is acquired based on a target frequency characteristic of the image filtering process.
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28.发明授权公开(公告)号：US09892495B2
公开(公告)日：2018-02-13
申请号：US15265301
申请日：2016-09-14
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Masahiko Sugimoto , Kenkichi Hayashi
CPC classification number: G06T5/008 , G06T5/10 , G06T2207/10024 , G06T2207/20024 , H04N1/4092 , H04N5/3572 , H04N9/045 , H04N9/646
Abstract: Disclosed are an image processing device, an imaging device, an image processing method, and an image processing program capable of, when recovering a deteriorated image due to a point spread function of an optical system, effectively performing phase recovery and suppressing the occurrence of artifact due to frequency recovery processing. The image processing device includes a phase recovery processing unit which subjects image data acquired from an imaging element by capturing an object image using an optical system to phase recovery processing using a phase recovery filter based on a point spread function of the optical system, a gradation correction processing unit which subjects image data subjected to the phase recovery processing to nonlinear gradation correction, and a frequency recovery processing unit which subjects image data subjected to the gradation correction to frequency recovery processing using a frequency recovery filter based on the point spread function of the optical system.
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公开(公告)号：US09892492B2
公开(公告)日：2018-02-13
申请号：US15135737
申请日：2016-04-22
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Kenkichi Hayashi
CPC classification number: G06T5/003 , G06T5/10 , G06T2207/10004 , G06T2207/20192 , H04N1/4092 , H04N5/23206 , H04N5/23245 , H04N5/3572
Abstract: A restoration processing section 38 performs restoration processing using a restoration filter based on a point spread function for image data. An outline enhancement processing section 39 performs sharpening processing using a sharpening filter for image data. A sharpness restoration control section 37 acquires a total sharpness restoration rate based on the restoration rate (restoration strength magnification U) of the image data based on the restoration processing and the sharpening rate (sharpening strength magnification V) of the image data based on the sharpening processing, acquires one of the restoration rate and the sharpening rate, and calculates the other one of the restoration rate and the sharpening rate based on the total sharpness restoration rate.
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公开(公告)号：US09865039B2
公开(公告)日：2018-01-09
申请号：US14850479
申请日：2015-09-10
Applicant: FUJIFILM Corporation
Inventor： Yousuke Naruse , Kenkichi Hayashi , Masahiko Sugimoto
CPC classification number: G06T5/003 , G06T5/20 , G06T2207/10024 , G06T2207/20012 , G06T2207/20024 , G06T2207/20056 , G06T2207/20076 , H04N5/2254 , H04N9/045
Abstract: A restoration filter generation device according to one embodiment of the present invention includes: an information acquisition unit that acquires information showing a difference that depends on a color of an optical transfer function of an optical system; and a restoration filter generation unit that generates a restoration filter, which weakens restoration strength according to the difference that depends on the color of the optical transfer function on the basis of the information acquired by the information acquisition unit, and makes the restoration strength of the restoration filter weaker than the restoration strength of an ideal filter decided assuming that the difference that depends on the color of the optical transfer function does not exist. As a result, the overcorrection is reduced.
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