Kadkhodamohammadi, A; Luengo, I; Barbarisi, S; Taleb, H; Flouty, E; Stoyanov, D; (2019) Feature Aggregation Decoder for Segmenting Laparoscopic Scenes. In: Zhou, L and Sarikaya, D and Kia, SM and Speidel, S and Malpani, A and Hashimoto, D and Habes, M and Lofstedt, T and Ritter, K and Wang, H, (eds.) OR 2.0 Context-Aware Operating Theaters and Machine Learning in Clinical Neuroimaging. (pp. pp. 3-11). Springer: Cham, Switzerland.

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Abstract

Laparoscopic scene segmentation is one of the key building blocks required for developing advanced computer assisted interventions and robotic automation. Scene segmentation approaches often rely on encoder-decoder architectures that encode a representation of the input to be decoded to semantic pixel labels. In this paper, we propose to use the deep Xception model for the encoder and a simple yet effective decoder that relies on a feature aggregation module. Our feature aggregation module constructs a mapping function that reuses and transfers encoder features and combines information across all feature scales to build a richer representation that keeps both high-level context and low-level boundary information. We argue that this aggregation module enables us to simplify the decoder and reduce the number of parameters in the decoder. We have evaluated our approach on two datasets and our experimental results show that our model outperforms state-of-the-art models on the same experimental setup and significantly improves the previous results, 98.44% vs 89.00% , on the EndoVis’15 dataset.

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