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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Cephalometric Landmark Detection by Attentive Feature Pyramid Fusion and Regression-Voting
verfasst von : Runnan Chen, Yuexin Ma, Nenglun Chen, Daniel Lee, Wenping Wang
Erschienen in: Medical Image Computing and Computer Assisted Intervention – MICCAI 2019
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Abstract
Marking anatomical landmarks in cephalometric radiography is a critical operation in cephalometric analysis. Automatically and accurately locating these landmarks is a challenging issue because different landmarks require different levels of resolutions and semantics. Based on this observation, we propose a novel attentive feature pyramid fusion module (AFPF) to explicitly shape high-resolution and semantically enhanced fusion features to achieve significantly higher accuracy than existing deep learning-based methods. We also combine heat maps and offset maps to perform pixel-wise regression-voting to improve detection accuracy. By incorporating the AFPF and regression-voting, we develop an end-to-end deep learning framework that improves detection accuracy by 7%–11% for all the evaluation metrics over the state-of-the-art method. We present ablation studies to give more insights into different components of our method and demonstrate its generalization capability and stability for unseen data from diverse devices.