公开(公告)号：US12079958B2

公开(公告)日：2024-09-03

申请号：US17602622

申请日：2020-04-15

Applicant: NIDEK CO. LTD.

Inventor： Andrea Peroni ,  Andrea De Giusti ,  Michele Pascolini ,  Mattia Minozzi ,  Simone Pajaro

IPC: G06T7/13 ,  G06T5/50 ,  G06T5/70 ,  G06T5/90 ,  G06T7/30

CPC classification number: G06T5/50 ,  G06T5/70 ,  G06T5/90 ,  G06T7/13 ,  G06T7/30 ,  G06T2207/20028 ,  G06T2207/30041

Abstract: The method is used for creating an all-in-focus image of a portion of an iridocorneal angle of an eye starting from a plurality of images (610), these images being shallow field-depth images of that portion taken with different focus planes but with a same image frame; the method comprises the steps of: A) pre-processing (620) said plurality of images so to obtain a plurality of single-channel images if the images of said plurality are color images, B) calculating (630) an initial focus map starting from said plurality of single-channel images, C) creating (640) an initial estimated all-in-focus image starting from said initial focus map and said plurality of single-channel images, D) calculating (650) an initial edge map starting from said initial focus map and said plurality of single-channel images, E) iterating (660) a regularization process until a stop regularization condition is met, wherein the regularization process comprises removing one or more edge points of the initial edge map by considering a reference model of an iridocorneal angle of an eye, F) creating (670) said all-in-focus image starting from said plurality of images and a focus map last calculated in step E; the reference model expresses at least one geometrical parameter of a surface of an iridocorneal angle of an eye.