公开(公告)号：US20180047140A1

公开(公告)日：2018-02-15

申请号：US15783471

申请日：2017-10-13

Applicant: FUJIFILM Corporation

Inventor： Takashi KUNUGISE ,  Yousuke NARUSE

IPC: G06T5/00 ,  G03B17/14 ,  G06T5/10 ,  G02B13/18

CPC classification number: G06T5/003 ,  G02B13/18 ,  G02B15/16 ,  G03B17/14 ,  G03B2205/0046 ,  G06T5/00 ,  G06T5/10 ,  H04N1/401 ,  H04N1/409 ,  H04N5/232 ,  H04N5/23209 ,  H04N5/3572

Abstract: An optical system has the entire angle of view at a wide-angle end of not smaller than 90 degrees. A spatial frequency at which an MTF of the optical system acquired using an evaluation wavelength in a region of an image formation plane in which the distance from the center of the image formation plane is not less than 80% and less than 95% of half of the length of a diagonal line of an imaging surface of an imaging element image is not more than 30% is higher at the wide-angle end than at a telephoto end. When F≧√(Fw×Ft) is satisfied (where F indicates the focal length of the optical system when the target image is captured, Fw indicates the focal length at the wide-angle end, and Ft indicates the focal length at the telephoto end), a sharpening processing unit performs a restoration process based on an optical transfer function of the optical system as a sharpening process.

公开(公告)号：US20170294005A1

公开(公告)日：2017-10-12

申请号：US15632689

申请日：2017-06-26

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Kenkichi HAYASHI ,  Masahiko SUGIMOTO

IPC: G06T5/20 ,  H04N5/357 ,  H04N9/64 ,  G06T5/00

CPC classification number: G06T5/20 ,  G06T5/003 ,  G06T2207/10024 ,  G06T2207/20024 ,  H04N1/58 ,  H04N5/217 ,  H04N5/357 ,  H04N9/045 ,  H04N9/646

Abstract: A restoration filter generation device which generates a restoration filter for performing a restoration process on luminance system image data, the restoration process being based on a point-image distribution in an optical system, the luminance system image data being image data relevant to luminance and being generated based on image data for each color of multiple colors, the restoration filter generation device including an MTF acquisition device which acquires a modulation transfer function MTF for the optical system; and a restoration filter generation device which generates the restoration filter based on the modulation transfer function MTF, the restoration filter suppressing an MTF value of image data for each color of the multiple colors to 1.0 or less at least in a region of a particular spatial frequency or less, the image data for each color of the multiple colors corresponding to the luminance system image data after the restoration process.

公开(公告)号：US20170294003A1

公开(公告)日：2017-10-12

申请号：US15632641

申请日：2017-06-26

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Kenkichi HAYASHI ,  Masahiko SUGIMOTO

IPC: G06T5/20 ,  H04N5/357 ,  H04N9/64 ,  G06T5/00

CPC classification number: G06T5/20 ,  G06T5/003 ,  G06T2207/10024 ,  G06T2207/20024 ,  H04N1/58 ,  H04N5/217 ,  H04N5/357 ,  H04N9/045 ,  H04N9/646

Abstract: A restoration filter generation device which generates a restoration filter for performing a restoration process on luminance system image data, the restoration process being based on a point-image distribution in an optical system, the luminance system image data being image data relevant to luminance and being generated based on image data for each color of multiple colors, the restoration filter generation device including an MTF acquisition device which acquires a modulation transfer function MTF for the optical system; and a restoration filter generation device which generates the restoration filter based on the modulation transfer function MTF, the restoration filter suppressing an MTF value of image data for each color of the multiple colors to 1.0 or less at least in a region of a particular spatial frequency or less, the image data for each color of the multiple colors corresponding to the luminance system image data after the restoration process.

公开(公告)号：US20170163915A1

公开(公告)日：2017-06-08

申请号：US15435950

申请日：2017-02-17

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Kenkichi HAYASHI

IPC: H04N5/357 ,  H04N5/232

CPC classification number: H04N5/3572 ,  G06T5/001 ,  G06T5/20 ,  H04N5/217 ,  H04N5/23209 ,  H04N5/23229 ,  H04N5/23293 ,  H04N17/002

Abstract: There are provided an image processing apparatus, an image processing method, and a program capable of realizing a desired image filtering process specified based on an optical characteristic of an individual optical system with high accuracy using a simple computation process. Further, there are provided a filter acquisition apparatus, a filter acquisition method, program, and a recording medium capable of acquiring a filter which is suitably usable in an image filtering process. A filtering process unit 41 (image processing apparatus 35) 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.

公开(公告)号：US20170004606A1

公开(公告)日：2017-01-05

申请号：US15265301

申请日：2016-09-14

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Masahiko SUGIMOTO ,  Kenkichi HAYASHI

IPC: G06T5/00 ,  H04N9/64 ,  H04N5/357 ,  G06T5/10

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.

Abstract translation: 公开了一种图像处理装置，成像装置，图像处理方法和图像处理程序，其能够在由于光学系统的点扩散功能恢复劣化图像时有效地执行相位恢复并抑制伪像的发生 由于频率恢复处理。 图像处理装置包括：相位恢复处理单元，其通过使用光学系统捕获对象图像来拍摄从成像元件获取的图像数据，使用基于光学系统的点扩散功能的相位恢复滤波器进行相位恢复处理;灰度 对经过相位恢复处理的图像数据进行非线性灰度校正的校正处理单元，以及频率恢复处理单元，其使用基于点扩散函数的频率恢复滤波器对进行了灰度校正的图像数据进行频率恢复处理 光学系统。

公开(公告)号：US20160027157A1

公开(公告)日：2016-01-28

申请号：US14850479

申请日：2015-09-10

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Kenkichi HAYASHI ,  Masahiko SUGIMOTO

IPC: G06T5/00 ,  G06T5/20

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.

Abstract translation: 根据本发明的一个实施例的恢复滤波器生成装置包括：信息获取单元，其获取表示取决于光学系统的光学传递函数的颜色的差异的信息; 以及恢复滤波器生成单元，其生成恢复滤波器，所述恢复滤波器根据由所述信息获取单元获取的信息根据所述光学传递函数的颜色的差而削弱恢复强度，并且使得所述恢复滤波器的恢复强度 假设不存在取决于光学传递函数的颜色的差异，则恢复滤波器比理想滤波器的恢复强度弱。 结果，过度矫正减少了。

公开(公告)号：US20150317776A1

公开(公告)日：2015-11-05

申请号：US14800873

申请日：2015-07-16

Applicant: FUJIFILM Corporation

Inventor： Masahiko SUGIMOTO ,  Kenkichi HAYASHI ,  Yousuke NARUSE

IPC: G06T5/00 ,  H04N5/232

CPC classification number: G06T5/003 ,  G06T5/20 ,  G06T2207/10004 ,  H04N5/23229 ,  H04N5/357 ,  H04N9/045

Abstract: An image processing device according to an embodiment of the present invention obtains recovery image data by performing restoration processing using a restoration filter based on a point spread function of an optical system, on original image data obtained from an imaging element by imaging using the optical system. The restoration filter used in this restoration processing (a combination filter and realization filter Fr) is generated by combining multiple base filters Fb. Base filter Fb may be arbitrarily selected from filters that are confirmed beforehand to be effective to prevent image quality degradation.

Abstract translation: 根据本发明的实施例的图像处理装置通过使用基于光学系统的点扩散功能的恢复滤波器对通过使用光学系统进行成像的从成像元件获得的原始图像数据进行恢复处理来获得恢复图像数据 。 在该恢复处理中使用的恢复滤波器（组合滤波器和实现滤波器Fr）通过组合多个基本滤波器Fb而产生。 基本滤波器Fb可以从预先确认的有效防止图像质量劣化的滤波器中任意选择。

公开(公告)号：US20170090151A1

公开(公告)日：2017-03-30

申请号：US15272617

申请日：2016-09-22

Applicant: FUJIFILM Corporation

Inventor： Yousuke NARUSE ,  Michio CHO

IPC: G02B9/64 ,  G02B27/00

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.

公开(公告)号：US20160119603A1

公开(公告)日：2016-04-28

申请号：US14989611

申请日：2016-01-06

Applicant: FUJIFILM Corporation

Inventor： Kenkichi HAYASHI ,  Masahiko SUGIMOTO ,  Yousuke NARUSE ,  Kosuke IRIE

IPC: H04N9/64 ,  G06T7/20 ,  G06K9/44 ,  H04N5/225 ,  H04N5/232 ,  H04N5/357 ,  G06T5/00 ,  G06T5/30

CPC classification number: H04N9/646 ,  G06K9/44 ,  G06T5/003 ,  G06T5/30 ,  G06T7/20 ,  G06T2207/20024 ,  G06T2207/20182 ,  G06T2207/20201 ,  H04N5/208 ,  H04N5/217 ,  H04N5/2254 ,  H04N5/23209 ,  H04N5/23229 ,  H04N5/238 ,  H04N5/3572

Abstract: An imaging device 10 according to an aspect of the present invention includes: an image generation section 100 that generates a moving image; a filter acquisition section 105 that acquires a restoration filter corresponding to a transfer function for the point distribution of an optical system; an aperture value detection section 110 that detects an aperture value of the optical system; a restoration processing determination section 115 that determines whether or not the aperture value detected by the aperture value detection section 110 is equal to or greater than a small-aperture-blurring reference aperture value; and a restoration processing execution section 120 that executes the restoration processing on the moving image through the restoration filter, in case where the restoration processing determination section 115 determines that the aperture value detected by the aperture value detection section 110 is equal to or greater than the small-aperture-blurring reference aperture value.

Abstract translation: 根据本发明的一个方面的成像装置10包括：生成运动图像的图像生成部100; 获取与光学系统的点分布的传递函数对应的恢复滤波器的滤波器获取部105; 光圈值检测部110，其检测光学系统的光圈值; 确定由光圈值检测部分110检测的光圈值是否等于或大于小光圈模糊参考光圈值的恢复处理确定部分115; 以及恢复处理执行部120，其通过恢复滤波器执行对运动图像的恢复处理，在恢复处理确定部115确定由光圈值检测部110检测到的光圈值等于或大于 小光圈模糊参考光圈值。

公开(公告)号：US20160098819A1

公开(公告)日：2016-04-07

申请号：US14921020

申请日：2015-10-23

Applicant: FUJIFILM Corporation

Inventor： Masahiko SUGIMOTO ,  Kenkichi HAYASHI ,  Yousuke NARUSE

IPC: G06T5/00 ,  G06F17/30 ,  G06T5/10

CPC classification number: G06T5/001 ,  G06F17/3028 ,  G06T5/10 ,  H04N5/23206 ,  H04N5/23209 ,  H04N5/23229 ,  H04N5/23241 ,  H04N5/23245 ,  H04N9/045 ,  H04N17/002

Abstract: Disclosed is a technique capable of efficiently storing and retaining characteristic data (a restoration filter or the like) of an optical system used for a restoration process in a storage unit with limited storage capacity in consideration of the degree of image restoration. An image processing device includes a characteristic data storage unit 42 which is capable of storing characteristic data of a plurality of types of optical systems, and a restoration processing unit which subjects source image data to a restoration process using a restoration filter based on a point spread function of an optical system to acquire recovered image data. In case where storing new characteristic data in the characteristic data storage unit, characteristic data which is stored in the characteristic data storage unit 42 is controlled based on a restoration evaluation value which is allocated to characteristic data according to the type of optical system.

Abstract translation: 公开了一种技术，其能够考虑到图像恢复的程度，有效地存储和保留用于具有有限存储容量的存储单元中用于恢复处理的光学系统的特性数据（恢复过滤器等）。 图像处理装置包括能够存储多种类型的光学系统的特征数据的特征数据存储单元42以及使用基于点扩展的恢复滤波器对源图像数据进行恢复处理的恢复处理单元 光学系统的功能来获取恢复的图像数据。 在特征数据存储单元中存储新的特征数据的情况下，基于根据光学系统的类型分配给特征数据的恢复评估值来控制存储在特征数据存储单元42中的特征数据。