公开(公告)号：US10929963B2

公开(公告)日：2021-02-23

申请号：US16409179

申请日：2019-05-10

Applicant: Optos PLC

Inventor： Alan Duncan Fleming ,  Gonzalo Muyo ,  Michael Verhoek

IPC: G06T7/73 ,  G06T5/00 ,  A61B3/10 ,  A61B3/12 ,  A61B5/00 ,  G06T3/00 ,  G06T7/00

Abstract: An apparatus for rendering optical coherence tomography, OCT, retinal image data, acquired by an OCT scanner scanning a retina of an eye over a range of scan locations, wherein each scan location is associated with a respective coordinate in a first coordinate system, and each pixel of the rendered OCT retinal image data is associated with a respective coordinate in a second coordinate system different from the first coordinate system. The apparatus comprises a communication module arranged to receive the OCT retinal image data, and a coordinate-determining module arranged to determine values of coordinates in the second coordinate system of pixels in the received OCT retinal image using a transformation from coordinates in the first to second coordinate system. The apparatus further comprises an interpolation module arranged to interpolate between values of pixels at the determined values to calculate values of the pixels of the rendered OCT retinal image data.

公开(公告)号：US10357150B2

公开(公告)日：2019-07-23

申请号：US15484935

申请日：2017-04-11

Applicant: OPTOS PLC

Inventor： Jano Van Hemert ,  Michael Verhoek

IPC: G06K9/00 ,  A61B3/00 ,  A61B3/14 ,  G06T7/64 ,  A61B3/10 ,  A61B3/12 ,  G06T7/00

Abstract: A method of determining a geometrical measurement of a retina of an eye, comprising obtaining a two dimensional representation of at least a portion of the retina of the eye (34), deriving a geometrical remapping which converts the two dimensional representation of the retinal portion to a three dimensional representation of the retinal portion (36), using one or more coordinates of the two dimensional representation of the retinal portion to define the geometrical measurement to be taken of the retina on the two dimensional representation (38), using the geometrical remapping to convert the or each coordinate of the two dimensional representation of the retinal portion to an equivalent coordinate of the three dimensional representation of the retinal portion (40), and using the or each equivalent coordinate of the three dimensional representation of the retinal portion to determine the geometrical measurement of the retina of the eye (42).

公开(公告)号：US20170215722A1

公开(公告)日：2017-08-03

申请号：US15484935

申请日：2017-04-11

Applicant: OPTOS PLC

Inventor： Jano Van Hemert ,  Michael Verhoek

IPC: A61B3/00 ,  G06T7/64 ,  A61B3/10 ,  G06T7/00 ,  A61B3/14 ,  A61B3/12

CPC classification number: A61B3/0025 ,  A61B3/1005 ,  A61B3/1025 ,  A61B3/12 ,  A61B3/14 ,  G06T7/0012 ,  G06T7/64 ,  G06T2207/30041

Abstract: A method of determining a geometrical measurement of a retina of an eye, comprising obtaining a two dimensional representation of at least a portion of the retina of the eye (34), deriving a geometrical remapping which converts the two dimensional representation of the retinal portion to a three dimensional representation of the retinal portion (36), using one or more coordinates of the two dimensional representation of the retinal portion to define the geometrical measurement to be taken of the retina on the two dimensional representation (38), using the geometrical remapping to convert the or each coordinate of the two dimensional representation of the retinal portion to an equivalent coordinate of the three dimensional representation of the retinal portion (40), and using the or each equivalent coordinate of the three dimensional representation of the retinal portion to determine the geometrical measurement of the retina of the eye (42).