Mei Fang Chen

US Patent:

20120184845, Jul 19, 2012

Filed:

Nov 11, 2011

Appl. No.:

13/294601

Inventors:

Hiroshi Ishikawa - Allison Park PA, US
Gadi Wollstein - Pittsburgh PA, US
Joel S. Schuman - Pittsburgh PA, US
Yu-Ying Liu - Atlanta GA, US
James M. Rehg - Atlanta GA, US
Mei Chen - Pittsburgh PA, US

Assignee:

University of Pittsburgh - Of the Commonwealth System of Higher Education - Pittsburgh PA

International Classification:

A61B 3/14
G06K 9/00

US Classification:

600425, 351206, 382131

Abstract:

Systems and methods of analyzing an optical coherence tomography image of a retina are discussed. A 2-dimensional slice of the image can be aligned to produce an approximately horizontal image of the retina and an edge map based at least in part on the aligned slice. Also, at least one global representation can be determined based on a (multi-scale) spatial division, such as multi-scale spatial pyramid, on the slice and/or edge map. Creating the local features is based on the specified cell structure of the global representation. The local features can be constructed based on local binary pattern (LBP)-based features. Additionally, a slice can be categorized into one or more categories via one or more classifiers (e.g., support vector machines). Each category can be associated with at least one ocular pathology, and classifying can be based on the constructed global descriptors, which can include the LBP-based local descriptors.