5 March 2018 Superpixel guided active contour segmentation of retinal layers in OCT volumes
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Proceedings Volume 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources; 1059106 (2018) https://doi.org/10.1117/12.2282326
Event: Second Canterbury Conference on Optical Coherence Tomography, 2017, Canterbury, United Kingdom
Abstract
Retinal OCT image segmentation is a precursor to subsequent medical diagnosis by a clinician or machine learning algorithm. In the last decade, many algorithms have been proposed to detect retinal layer boundaries and simplify the image representation. Inspired by the recent success of superpixel methods for pre-processing natural images, we present a novel framework for segmentation of retinal layers in OCT volume data. In our framework, the region of interest (e.g. the fovea) is located using an adaptive-curve method. The cell layer boundaries are then robustly detected firstly using 1D superpixels, applied to A-scans, and then fitting active contours in B-scan images. Thereafter the 3D cell layer surfaces are efficiently segmented from the volume data. The framework was tested on healthy eye data and we show that it is capable of segmenting up to 12 layers. The experimental results imply the effectiveness of proposed method and indicate its robustness to low image resolution and intrinsic speckle noise.
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Fangliang Bai, Fangliang Bai, Stuart J. Gibson, Stuart J. Gibson, Manuel J. Marques, Manuel J. Marques, Adrian Podoleanu , Adrian Podoleanu , } "Superpixel guided active contour segmentation of retinal layers in OCT volumes", Proc. SPIE 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources, 1059106 (5 March 2018); doi: 10.1117/12.2282326; https://doi.org/10.1117/12.2282326
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