公开(公告)号：US20210073951A1

公开(公告)日：2021-03-11

申请号：US16642331

申请日：2017-09-01

Applicant: Shimadzu Corporation

Inventor： Ryo TAKEDA

IPC: G06T5/00 ,  G06T5/20 ,  A61B6/00

Abstract: An image processing device (100) includes a noise reducer (22) including a pixel ratio acquirer (23) configured to acquire a pixel value ratio (a) between a scattered-ray reduced image (52) after reduction of a scattered-ray component and a radiation image (51) before the reduction of the scattered-ray component, the noise reducer being configured to reduce a noise component from the scattered-ray reduced image based on the pixel value ratio.

公开(公告)号：US20190266709A1

公开(公告)日：2019-08-29

申请号：US16335000

申请日：2016-09-21

Applicant: SHIMADZU CORPORATION

Inventor： Ryo TAKEDA

IPC: G06T5/00 ,  H04N1/393 ,  H04N1/409

Abstract: An image processing apparatus (100) includes a synthetic image acquirer (24) for acquiring a plurality of smoothed images different from each other, in which noise components have been smoothed on an image to be processed, and that is operable to perform weighted synthesis of the smoothed images based on pixel value differences between a pixel value of a pixel of the image to be processed and pixel values of pixels of the acquired smoothed images, in which a positive and a negative have been taken into consideration.

公开(公告)号：US20180270401A1

公开(公告)日：2018-09-20

申请号：US15543680

申请日：2015-01-15

Applicant: SHIMADZU CORPORATION

Inventor： HISANORI MORITA ,  Ryo TAKEDA

IPC: H04N5/21 ,  G06T5/00 ,  G06T5/50 ,  G06K9/40

CPC classification number: H04N5/21 ,  G06K9/40 ,  G06T5/002 ,  G06T5/50

Abstract: With the present invention, it is possible to provide an image processing apparatus capable of reliably removing noise, even for a live image having a poor S/N ratio. The present invention has a configuration to search for where, on a frame F0, a target block BT is reflected. When superimposing the frame F0 and a frame F1, the target block BT, which is a fragment of the frame F0, and a plurality of blocks to be superimposed, which is a fragment of the frame F1 are set, and if, from fusion blocks BF generated by superimposing the target block BT on each of the blocks to be superimposed BR, a selection block BS is selected wherein superimposed subject images most reinforce one another, it is possible to reliably suppress duplication of the subject images.

公开(公告)号：US20220207723A1

公开(公告)日：2022-06-30

申请号：US17523613

申请日：2021-11-10

Applicant: SHIMADZU CORPORATION

Inventor： Ryo TAKEDA

IPC: G06T7/00 ,  G06N3/08

Abstract: This X-ray image processing apparatus includes: an image acquisition unit; a frequency resolution processing unit configured to perform frequency resolution processing for resolving an X-ray image into a high-frequency component image and a low-frequency component image; a high-resolution image generation unit configured to generate a high-resolution high-frequency component image from the high-frequency component image by a trained learning model, the high-resolution high-frequency component image being an image higher in resolution than the high-frequency component image; and an image synthesis unit configured to synthesize an image based on the low-frequency component image and an image based on the high-resolution high-frequency component image to generate a high-resolution X-ray image.

公开(公告)号：US20210232090A1

公开(公告)日：2021-07-29

申请号：US17156591

申请日：2021-01-24

Applicant: Shimadzu Corporation

Inventor： Yusuke TAGAWA ,  Ryo TAKEDA

IPC: G03H1/00 ,  G06T7/50 ,  G03H1/04

Abstract: The accuracy of estimation of a focal distance in digital holography is enhanced. In an image reproduction method, a two-dimensional power spectrum is generated from an interference fringe image generated from object light and reference light, the two-dimensional power spectrum having an intensity specified by a first frequency in a first direction and a second frequency in a second direction. A one-dimensional power spectrum is generated by, for each frequency component specified by the first frequency and the second frequency in the two-dimensional power spectrum, associating the frequency component with a feature quantity, the feature quantity being calculated by aggregating a plurality of intensities corresponding to the frequency component. A focal distance between an object and a detector is estimated using a trained distance estimation model, the trained distance estimation model receiving, as input, a plurality of feature quantities included in the one-dimensional power spectrum.

公开(公告)号：US20170091908A1

公开(公告)日：2017-03-30

申请号：US15312408

申请日：2015-05-18

Applicant: SHIMADZU CORPORATION

Inventor： Ryo TAKEDA ,  Hisanori MORITA

IPC: G06T5/00

CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T7/337 ,  G06T2207/10004 ,  G06T2207/10121 ,  G06T2207/20182 ,  H04N5/23229

Abstract: According to the aspect of the present invention, an image processing device capable of absolutely removing noises in each frame forming a live image can be provided. Specifically, according to the aspect of the present invention, a target block T can be set in the original image It and it is searched out where such target block T is imaged in the superimposition target image Ot−1. According to the aspect of the present invention, a tracking of the subject image is executed per block, so that reliability thereof can be extraordinarily improved compared to the conventional method searching the destination every individual pixel.

公开(公告)号：US20230270397A1

公开(公告)日：2023-08-31

申请号：US18112951

申请日：2023-02-22

Applicant: Shimadzu Corporation

Inventor： Hiroshi OKUMURA ,  Junya YAMAMOTO ,  Ryo TAKEDA

IPC: A61B6/00 ,  A61B6/04

CPC classification number: A61B6/505 ,  A61B6/0407 ,  A61B6/461

Abstract: An X-ray imaging apparatus includes an X-ray irradiation unit, an X-ray detection unit, and a correction information acquisition unit configured to identify an outer edge of each of a plurality of predetermined portions of one imaging target of the subject in an X-ray image and acquire position correction information for correcting a relative position of the X-ray irradiation unit with respect to the imaging target of the subject based on a positional relation between the identified outer edges of the plurality of the predetermined portions. The position correction information includes a relative moving direction and a movement amount for correcting the relative position of the X-ray irradiation unit with respect to the imaging target of the subject to a position where the X-ray image in which the positional relation between the outer edges of the plurality of predetermined portions is imaged can be captured.