1,681 research outputs found
Progressive Class-Wise Attention (PCA) Approach for Diagnosing Skin Lesions
Skin cancer holds the highest incidence rate among all cancers globally. The
importance of early detection cannot be overstated, as late-stage cases can be
lethal. Classifying skin lesions, however, presents several challenges due to
the many variations they can exhibit, such as differences in colour, shape, and
size, significant variation within the same class, and notable similarities
between different classes. This paper introduces a novel class-wise attention
technique that equally regards each class while unearthing more specific
details about skin lesions. This attention mechanism is progressively used to
amalgamate discriminative feature details from multiple scales. The introduced
technique demonstrated impressive performance, surpassing more than 15
cutting-edge methods including the winners of HAM1000 and ISIC 2019
leaderboards. It achieved an impressive accuracy rate of 97.40% on the HAM10000
dataset and 94.9% on the ISIC 2019 dataset
Effective melanoma recognition using deep convolutional neural network with covariance discriminant loss.
Melanoma recognition is challenging due to data imbalance and high intra-class variations and large inter-class similarity. Aiming at the issues, we propose a melanoma recognition method using deep convolutional neural network with covariance discriminant loss in dermoscopy images. Deep convolutional neural network is trained under the joint supervision of cross entropy loss and covariance discriminant loss, rectifying the model outputs and the extracted features simultaneously. Specifically, we design an embedding loss, namely covariance discriminant loss, which takes the first and second distance into account simultaneously for providing more constraints. By constraining the distance between hard samples and minority class center, the deep features of melanoma and non-melanoma can be separated effectively. To mine the hard samples, we also design the corresponding algorithm. Further, we analyze the relationship between the proposed loss and other losses. On the International Symposium on Biomedical Imaging (ISBI) 2018 Skin Lesion Analysis dataset, the two schemes in the proposed method can yield a sensitivity of 0.942 and 0.917, respectively. The comprehensive results have demonstrated the efficacy of the designed embedding loss and the proposed methodology
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