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Semi-supervised Medical Imaging Segmentation with Soft Pseudo-label Fusion by Xiaoqiang Li; Yuanchen Wu; Songmin Dai is a Computer Science article available to read on EtoBox.

What is Semi-supervised Medical Imaging Segmentation with Soft Pseudo-label Fusion about?

Segmentation is an essential task in modern medical imaging analysis. Since the scarcity of labeled pixel-level annotations often limits its wide applications, recent studies have proposed Semi-supervised Learning (SSL) frameworks to tackle this issue. Among them, the paradigm of pseudo-labeling, derived from SSL of natural images, has been popularly transferred on various medical datasets. Despite its promising results, we observe that many medical images' regions are ambiguous, where pixels are challenging to be categorized as a specific class compared to natural images. Constructing hard pseudolabels for these regions is consequently unintuitive and prone to be of low quality. To this end, we develop a novel SSL framework with the proposed Soft Pseudo-label Fusion strategy (called "SPFSeg"). It can produce refined soft pseudo-labels, harboring the association knowledge between regions of interest (ROIs) and backgrounds while preserving the "lowdensity" assumption of vanilla pseudo-labeling. These soft pseudo-labels can further establish potent supervision signals for unlabeled images, helping the segmentation model learn better feature representations. Through extensive experime

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Author

Xiaoqiang Li; Yuanchen Wu; Songmin Dai

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Computer Science (Physical Sciences)