1. Articles from Yuhan Zhang

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    1. Automated segmentation of hyperreflective foci in spectral domain optical coherence tomography with diabetic retinopathy

      Automated segmentation of hyperreflective foci in spectral domain optical coherence tomography with diabetic retinopathy

      We propose an automated segmentation method to detect, segment, and quantify hyperreflective foci (HFs) in three-dimensional (3-D) spectral domain optical coherence tomography (SD-OCT). The algorithm is divided into three stages: preprocessing, layer segmentation, and HF segmentation. In this paper, a supervised classifier (random forest) was used to produce the set of boundary probabilities in which an optimal graph search method was then applied to identify and produce the layer segmentation using the Sobel edge algorithm. An automated grow-cut algorithm was applied to segment the HFs. The proposed algorithm was tested on 20 3-D SD-OCT volumes from 20 patients diagnosed with ...

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    1. (1 articles) Nanjing University of Science and Technology
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