公开(公告)号：US20250029419A1

公开(公告)日：2025-01-23

申请号：US18711910

申请日：2022-03-25

Applicant: NEC Corporation

Inventor： John Kenji David CLARK ,  Shigeru NAKAMURA

IPC: G06V40/13 ,  A61B5/00 ,  A61B5/1172 ,  G06T7/73 ,  G06V40/19 ,  G06V40/50 ,  G06V40/60

Abstract: An optical coherence tomography image generation apparatus includes: an acquisition unit that acquires a stereoscopic 3D image of a target; a determination unit that determines a plurality of scan areas on the target, on the basis of the stereoscopic 3D image; and a control unit that relatively moves an irradiation position of light for capturing an optical coherence tomography image of the target with respect to the target, and that controls scanning by the light of each of the plurality of scan areas.

公开(公告)号：US20250014392A1

公开(公告)日：2025-01-09

申请号：US18712289

申请日：2022-03-31

Applicant: NEC Corporation

Inventor： Shigeru NAKAMURA ,  John Kenji David CLARK

IPC: G06V40/60 ,  G01S17/08 ,  G06V40/13

Abstract: An information processing apparatus includes: a detection unit that detects a target-to-target distance between an imaging target and a light irradiation unit that irradiates light for scanning the imaging target; and a scan control unit that starts irradiation with the light by the light irradiation unit in a case where the target-to-target distance is a desired distance.

公开(公告)号：US20240167807A1

公开(公告)日：2024-05-23

申请号：US17989687

申请日：2022-11-18

Applicant: NEC CORPORATION

Inventor： John Kenji David CLARK ,  Shigeru NAKAMURA

IPC: G01B9/02091 ,  G01B9/02001

CPC classification number: G01B9/02091 ,  G01B9/02007

Abstract: A swept-source optical coherence tomography (SS-OCT) apparatus includes a wavelength-tunable light source, and a first optical coupler configured to split an output of the wavelength-tunable light source into a reference light beam and a sample light beam. The SS-OCT apparatus includes a sample illumination section configured to illuminate a sample using the sample beam, and receive a backscattered sample light beam. The SS-OCT apparatus includes a second optical coupler configured to receive the reference light beam and the backscattered sample light beam, and output an optical interference signal. The SS-OCT apparatus includes a detector configured to convert the optical interference signal to an electrical interference signal. The SS-OCT apparatus includes a controller configured to receive the electrical interference signal, generate a sparse representation based on the received electrical signal using compressed sensing, and generate a depth profile of the sample based on the sparse representation.

公开(公告)号：US20240035803A1

公开(公告)日：2024-02-01

申请号：US17876453

申请日：2022-07-28

Applicant: NEC CORPORATION

Inventor： John Kenji David CLARK ,  Shigeru NAKAMURA

IPC: G01B9/02091 ,  G01B9/02001

CPC classification number: G01B9/02091 ,  G01B9/02007

Abstract: A swept-source optical coherence tomography (SS-OCT) apparatus includes a plurality of wavelength-tunable light sources. The SS-OCT apparatus includes a first optical coupler configured to receive an output from each of the plurality of wavelength-tunable light sources. The optical coupler is configured to split the received output from the plurality of wavelength-tunable light sources into a reference optical path and a sample optical path. The sample optical path is configured to illuminate a sample. The SS-OCT apparatus includes a second optical coupler configured to receive return optical signals from the reference optical path and the sample optical path, and to output an optical interference signal. The SS-OCT apparatus includes a detector configured to detect the optical interference signal; and a controller configured to receive an electrical signal based on the detected optical interference signal. The controller is configured to generate a depth profile of the sample using compressed sensing.