公开(公告)号：US20210100450A1

公开(公告)日：2021-04-08

申请号：US16594985

申请日：2019-10-07

Applicant: Optos Plc

Inventor： Sriram Vikraman Sithalakshmi Amma ,  Praveen Ashok ,  Daniel Hurst

IPC: A61B3/18 ,  A61B3/10 ,  A61B3/12 ,  A61B3/00

Abstract: An ophthalmic scanning system includes a first imaging modality, a second imaging modality different from the first imaging modality, and a control system that maps the first imaging modality to the second imaging modality by compensating for at least one of an optical-mechanical and an electro-mechanical projection difference between the first and second imaging modalities. The control system provides a scan location for the second imaging modality based on a scan location of the first imaging modality.

公开(公告)号：US11426072B2

公开(公告)日：2022-08-30

申请号：US16594985

申请日：2019-10-07

Applicant: Optos Plc

Inventor： Sriram Vikraman Sithalakshmi Amma ,  Praveen Ashok ,  Daniel Hurst

IPC: A61B3/18 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12

Abstract: An ophthalmic scanning system includes a first imaging modality, a second imaging modality different from the first imaging modality, and a control system that maps the first imaging modality to the second imaging modality by compensating for at least one of an optical-mechanical and an electro-mechanical projection difference between the first and second imaging modalities. The control system provides a scan location for the second imaging modality based on a scan location of the first imaging modality.

公开(公告)号：US20210100448A1

公开(公告)日：2021-04-08

申请号：US17036184

申请日：2020-09-29

Applicant: Optos Plc

Inventor： Daniel Hurst

IPC: A61B3/12 ,  A61B3/14 ,  G06T5/00 ,  G06T5/50

Abstract: An imaging system for generating an image of a region of an eye, comprising: an ocular imaging device controlled by a control module to acquire, from a first viewpoint, a first ocular image of the region having an image artefact caused by obstruction from imaging of a part of the region by an object, and a second ocular image from a predetermined second viewpoint, which shows at least a portion of the part of the region that was obstructed from imaging during acquisition of the first ocular image; and an image data processing module for combining the first and second ocular images to generate an enhanced ocular image having an image artefact caused by obstruction from imaging by the object which is smaller in relation to the image artefact in the first or second ocular image, or no such image artefact.

公开(公告)号：US20200320754A1

公开(公告)日：2020-10-08

申请号：US16375152

申请日：2019-04-04

Applicant: Optos Plc

Inventor： Praveen Ashock ,  Daniel Hurst ,  Alan Anderson

IPC: G06T11/00 ,  G06T5/00 ,  G06T3/40

Abstract: A method of generating a look-up table, LUT, for constructing a dewarped B-scan image from A-scans of a cropped part of a sequence of acquired OCT A-scans, the LUT associating each of a plurality of pixel arrays that are to form the dewarped B-scan image with a respective A-scan in the cropped part. The method comprises: using an indication of a spatial distribution of scan locations of A-scans to determine a dewarp function for selecting, from among acquired A-scans, A-scans having uniformly spaced scan locations; using the function and cropping information, in accordance with which the cropped part is cropped from the acquired sequence, to select, for each array, a respective A-scan from the sequence such that A-scans are selected from the cropped part and have uniformly spaced scan locations; and storing, for each array, a respective pixel array identifier in association with a respective identifier of the selected A-scan.

公开(公告)号：US11974810B2

公开(公告)日：2024-05-07

申请号：US17036184

申请日：2020-09-29

Applicant: Optos Plc

Inventor： Daniel Hurst

IPC: A61B3/10 ,  A61B3/02 ,  A61B3/12 ,  A61B3/14 ,  G06T5/00 ,  G06T5/50

CPC classification number: A61B3/12 ,  A61B3/14 ,  G06T5/002 ,  G06T5/50 ,  G06T2207/20221 ,  G06T2207/30041

Abstract: An imaging system for generating an image of a region of an eye, comprising: an ocular imaging device controlled by a control module to acquire, from a first viewpoint, a first ocular image of the region having an image artefact caused by obstruction from imaging of a part of the region by an object, and a second ocular image from a predetermined second viewpoint, which shows at least a portion of the part of the region that was obstructed from imaging during acquisition of the first ocular image; and an image data processing module for combining the first and second ocular images to generate an enhanced ocular image having an image artefact caused by obstruction from imaging by the object which is smaller in relation to the image artefact in the first or second ocular image, or no such image artefact.