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SIG-Former: monocular surgical instruction generation with transformers.

Zhang, J., Nie, Y., Chang, J. and Zhang, J. J., 2022. SIG-Former: monocular surgical instruction generation with transformers. International Journal of Computer Assisted Radiology and Surgery. (In Press)

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DOI: 10.1007/s11548-022-02718-9

Abstract

PURPOSE: Automatic surgical instruction generation is a crucial part for intra-operative surgical assistance. However, understanding and translating surgical activities into human-like sentences are particularly challenging due to the complexity of surgical environment and the modal gap between images and natural languages. To this end, we introduce SIG-Former, a transformer-backboned generation network to predict surgical instructions from monocular RGB images. METHODS: Taking a surgical image as input, we first extract its visual attentive feature map with a fine-tuned ResNet-101 model, followed by transformer attention blocks to correspondingly model its visual representation, text embedding and visual-textual relational feature. To tackle the loss-metric inconsistency between training and inference in sequence generation, we additionally apply a self-critical reinforcement learning approach to directly optimize the CIDEr score after regular training. RESULTS: We validate our proposed method on DAISI dataset, which contains 290 clinical procedures from diverse medical subjects. Extensive experiments demonstrate that our method outperforms the baselines and achieves promising performance on both quantitative and qualitative evaluations. CONCLUSION: Our experiments demonstrate that SIG-Former is capable of mapping dependencies between visual feature and textual information. Besides, surgical instruction generation is still at its preliminary stage. Future works include collecting large clinical dataset, annotating more reference instructions and preparing pre-trained models on medical images.

Item Type:Article
ISSN:1861-6410
Additional Information:Funding Open Access funding enabled and organized by Projekt DEAL.
Uncontrolled Keywords:Image captioning; Reinforcement learning; Surgical instruction generation; Transformer
Group:Faculty of Media & Communication
ID Code:37330
Deposited By: Symplectic RT2
Deposited On:08 Aug 2022 14:59
Last Modified:08 Aug 2022 14:59

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