Learning Discriminative Representations for Fine-Grained Diabetic Retinopathy Grading

• URL: http://arxiv.org/abs/2011.02120v1
• Date: Wed, 4 Nov 2020 04:16:55 GMT
• Title: Learning Discriminative Representations for Fine-Grained Diabetic Retinopathy Grading
• Authors: Li Tian, Liyan Ma, Zhijie Wen, Shaorong Xie, Yupeng Xu
• Abstract summary: Diabetic retinopathy is one of the leading causes of blindness. To determine the disease severity levels, ophthalmologists need to focus on the discriminative parts of the fundus images.
• Score: 6.129288755571804
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Diabetic retinopathy (DR) is one of the leading causes of blindness. However, no specific symptoms of early DR lead to a delayed diagnosis, which results in disease progression in patients. To determine the disease severity levels, ophthalmologists need to focus on the discriminative parts of the fundus images. In recent years, deep learning has achieved great success in medical image analysis. However, most works directly employ algorithms based on convolutional neural networks (CNNs), which ignore the fact that the difference among classes is subtle and gradual. Hence, we consider automatic image grading of DR as a fine-grained classification task, and construct a bilinear model to identify the pathologically discriminative areas. In order to leverage the ordinal information among classes, we use an ordinal regression method to obtain the soft labels. In addition, other than only using a categorical loss to train our network, we also introduce the metric loss to learn a more discriminative feature space. Experimental results demonstrate the superior performance of the proposed method on two public IDRiD and DeepDR datasets.

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