公开(公告)号：US11445109B2

公开(公告)日：2022-09-13

申请号：US16715583

申请日：2019-12-16

Applicant: OLYMPUS CORPORATION

Inventor： Eiji Furukawa ,  Shunichi Koga

IPC: H04N5/232 ,  G06T3/40 ,  G06T7/20

Abstract: An image processing device comprises: one or more processors comprising hardware, the one or more processors being configured to: generate a high-resolution combined image by aligning a plurality of time-series images with each other in a high-resolution image space having a resolution higher than the plurality of time-series images based on an amount of displacement between the plurality of time-series images, and combining the plurality of time-series images; generate a low-resolution combined image by aligning the plurality of time-series images with each other in a low-resolution image space having a resolution equal to or lower than the resolution of the plurality of time-series images based on the amount of displacement, combining the plurality of time-series images through weighted addition; calculate a feature quantity pertaining to a pixel-value change direction at each region in the generated low-resolution combined image; and correct the high-resolution combined image based on the calculated feature quantity.

公开(公告)号：US10825145B2

公开(公告)日：2020-11-03

申请号：US16162483

申请日：2018-10-17

Applicant: OLYMPUS CORPORATION

Inventor： Daisuke Suzuki ,  Eiji Furukawa

IPC: G06T5/00 ,  G06T5/50 ,  H04N5/21 ,  H04N19/513 ,  G06T1/20 ,  G06T5/20

Abstract: An image processing device includes: a frame memory that saves a cyclic image of an immediately preceding frame as a reference image; and a processor comprising hardware. The processor is configured to: decompose an input image into a plurality of resolution images; set, as a base image, an image having a lower resolution than the input image among the plurality of resolution images and that detects a motion vector between the base image and the reference image; subject the reference image to motion compensation on the basis of the motion vector to generate a motion-compensated image; combine the base image with the motion-compensated image to generate a noise-reduced base image that serves as a new cyclic image; and combine the noise-reduced base image with the resolution image or resolution images other than the base image among the plurality of resolution images.

公开(公告)号：US10477236B2

公开(公告)日：2019-11-12

申请号：US15809947

申请日：2017-11-10

Applicant: OLYMPUS CORPORATION

Inventor： Eiji Furukawa

IPC: H04N19/53 ,  H04N19/43 ,  G06T7/207 ,  G06T7/11 ,  G06T1/00 ,  G06T5/50 ,  G06T7/254

Abstract: An image acquisition device includes: an image acquisition unit that acquires images of a subject in time series; a hierarchical motion-detection unit that can detect a motion vector between the images acquired by the image acquisition unit, by using images at two or more levels having different resolutions; a pixel-value-change detecting unit that divides the images acquired by the image acquisition unit into a plurality of partial regions and that detects a temporal change of the pixel value at a detection pixel set in each of the partial regions; and a hierarchical-motion-detection setting unit that sets a larger number of levels used in the hierarchical motion-detection unit, for any of the partial regions that includes the detection pixel at which the temporal change detected by the pixel-value-change detecting unit is larger.