Patent · US Active

Method and system for local adaptive detection of microaneurysms in digital fundus images

US8098907B2 · kind B2 · utility

8Cited by

7References

22Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Xiao Yan · Sunnyvale, US
Ke-Chiang Huang · East Lansing, US
Hans Schull · Weisendorf, DE

Key dates

Filing date	Jun 20, 2006
Grant date	Jan 17, 2012
Priority date	—
Expiry date	Aug 9, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30041
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A local adaptive method is proposed for automatic detection of microaneurysms in a digital ocular fundus image. Multiple subregions of the image are automatically analyzed and adapted to local intensity variation and properties. A priori region and location information about structural features such as vessels, optic disk and hard exudates are incorporated to further improve the detection accuracy. The method effectively improves the specificity of microaneurysms detection, without sacrificing sensitivity. The method may be used in automatic level-one grading of diabetic retinopathy screening.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.