公开(公告)号：US20150363930A1

公开(公告)日：2015-12-17

申请号：US14762793

申请日：2014-01-22

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Yanwu XU ,  Jiang LIU ,  Jun CHENG ,  Fengshou YIN ,  Wing Kee Damon WONG

IPC: G06T7/00 ,  G06K9/46 ,  G06K9/52 ,  G06K9/62

CPC classification number: G06T7/0014 ,  G06K9/46 ,  G06K9/52 ,  G06K9/6215 ,  G06K2009/4666 ,  G06T7/11 ,  G06T2207/30041

Abstract: A method is presented to obtain, from a retinal image, data characterizing the optic cup, such as data indicating the location and/or size of the optic cup in relation to the optic disc. A disc region of the retinal image of an eye, is expressed as a weighted sum of a plurality of pre-existing “reference” retinal images in a library, with the weights being chosen to minimize a cost function. The data characterizing the cup of the eye is obtained from cup data associated with the pre-existing disc images and the corresponding weights. The cost function includes (i) a construction error term indicating a difference between the disc region of the retinal image and a weighted sum of the reference retinal images, and (ii) a cost term, which may be generated using a weighted sum over the reference retinal images of a difference between the reference retinal images and the disc region of the retinal image.

Abstract translation: 呈现一种从视网膜图像获得表征视觉杯的数据的方法，诸如指示视觉杯相对于视盘的位置和/或尺寸的数据。 眼睛的视网膜图像的光盘区域被表示为图书馆中多个预先存在的“参考”视网膜图像的加权和，其中权重被选择以最小化成本函数。 表征眼睛杯的数据从与先前存在的光盘图像相关联的杯数据和相应的权重获得。 成本函数包括（i）指示视网膜图像的光盘区域与参考视网膜图像的加权和之间的差异的构造误差项，以及（ii）成本项，其可以使用加权和 参考视网膜图像与视网膜图像的光盘区域之间的差异的视网膜图像。

公开(公告)号：US20180181833A1

公开(公告)日：2018-06-28

申请号：US15506708

申请日：2015-08-25

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Fengshou YIN ,  Wing Kee Damon WONG ,  Jiang LIU ,  Beng Hai LEE ,  Zhuo ZHANG ,  Kavitha GOPALAKRISHNAN ,  Ying QUAN ,  Al Ping YOW

IPC: G06K9/46 ,  G06K9/00 ,  G06K9/03 ,  G06T7/00 ,  A61B3/00 ,  A61B3/12 ,  A61B3/14

CPC classification number: G06K9/4676 ,  A61B3/0025 ,  A61B3/12 ,  A61B3/14 ,  A61B2576/02 ,  G06K9/0061 ,  G06K9/036 ,  G06K9/6269 ,  G06K2009/00932 ,  G06K2209/05 ,  G06T7/0012 ,  G06T7/0014 ,  G06T2207/20081 ,  G06T2207/30041 ,  G06T2207/30168

Abstract: A method of assessing the quality of an retinal image (such as a fundus image) includes selecting at least one region of interest within a retinal image corresponding to a particular structure of the eye (e.g. the optic disc or the macula), and a quality score is calculated in respect of the, or each, region-of-interest. Each region of interest is typically one associated with pathology, as the optic disc and the macula are. Optionally, a quality score may be calculated also in respect of the eye as a whole (i.e. over the entire image, if the entire image corresponds to the retina).