Conference Proceeding

An automated framework of inner segment/outer segment defect detection for retinal SD-OCT images

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Abstract

The integrity of inner segment/outer segment (IS/OS) has high correlation with lower visual acuity in patients suffering from blunt trauma. An automated 3D IS/OS defect detection method based on the SD-OCT images was proposed. First, 11 surfaces were automatically segmented using the multiscale 3D graph-search approach. Second, the sub-volumes between surface 7 and 8 containing IS/OS region around the fovea (diameter of mm) were extracted and flattened based on the segmented retinal pigment epithelium layer. Third, 5 kinds of texture based features were extracted for each voxel. A KNN classifier was trained and each voxel was classified as disrupted or nondisrupted and the responding defect volume was calculated. The proposed method was trained and tested on 9 eyes from 9 trauma subjects using the leave-one-out cross validation method. The preliminary results demonstrated the feasibility and efficiency of the proposed method.

How to Cite:

Zhu, W., Shi, F., Xiang, D., Gao, E., Wang, L., Chen, H. & Chen, X., (2014) “An automated framework of inner segment/outer segment defect detection for retinal SD-OCT images”, Proceedings of the Ophthalmic Medical Image Analysis International Workshop 1(2014), 49-56. doi: https://doi.org/10.17077/omia.1008

Rights: Copyright © 2014, Weifang Zhu, Fei Shi, Dehui Xiang, Enting Gao, Liyun Wang, Haoyun Chen, and Xinjian Chen.