LapFormer: surgical tool detection in laparoscopic surgical video using transformer architecture

One of the most essential steps in the surgical workflow analysis is recognition of surgical tool presence. We propose a method to detect the presence of surgical tools in laparoscopic surgery videos, called LapFormer. The novelty of LapFormer is to use a Transformer architecture, which is a feed-fo...

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Published in:Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization Vol. 9; no. 3; pp. 302 - 307
Main Author: Kondo, Satoshi
Format: Journal Article
Language:English
Japanese
Published: Taylor & Francis 04.05.2021
Informa UK Limited
Subjects:
Laparoscopy
surgical workflow analysis
transformer
ISSN:2168-1163, 2168-1171
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Abstract One of the most essential steps in the surgical workflow analysis is recognition of surgical tool presence. We propose a method to detect the presence of surgical tools in laparoscopic surgery videos, called LapFormer. The novelty of LapFormer is to use a Transformer architecture, which is a feed-forward neural network architecture with attention mechanism, growing in popularity for natural language processing, for analysing inter-frame correlation in videos instead of using recurrent neural network families. To the best of our knowledge, no methods using a Transformer architecture for analysing laparoscopic surgery videos have been proposed. We evaluate our method on a dataset called Cholec80, which contains 80 videos of cholecystectomy surgeries. We confirm that our proposed method outperforms the conventional methods such as single-frame analysis with convolutional neural networks or multiple frame analysis with recurrent neural networks by 20.3 and 17.3 points in macro-F1 score, respectively. We also conduct an ablation study on how hyper-parameters for Transformer block in our proposed method affect the performance of the detection.
AbstractList One of the most essential steps in the surgical workflow analysis is recognition of surgical tool presence. We propose a method to detect the presence of surgical tools in laparoscopic surgery videos, called LapFormer. The novelty of LapFormer is to use a Transformer architecture, which is a feed-forward neural network architecture with attention mechanism, growing in popularity for natural language processing, for analysing inter-frame correlation in videos instead of using recurrent neural network families. To the best of our knowledge, no methods using a Transformer architecture for analysing laparoscopic surgery videos have been proposed. We evaluate our method on a dataset called Cholec80, which contains 80 videos of cholecystectomy surgeries. We confirm that our proposed method outperforms the conventional methods such as single-frame analysis with convolutional neural networks or multiple frame analysis with recurrent neural networks by 20.3 and 17.3 points in macro-F1 score, respectively. We also conduct an ablation study on how hyper-parameters for Transformer block in our proposed method affect the performance of the detection.
Author Kondo, Satoshi
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Snippet One of the most essential steps in the surgical workflow analysis is recognition of surgical tool presence. We propose a method to detect the presence of...
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SubjectTerms Laparoscopy
surgical workflow analysis
transformer
Title LapFormer: surgical tool detection in laparoscopic surgical video using transformer architecture
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