Multi-scale Hierarchical Vision Transformer with Cascaded Attention Decoding for Medical Image Segmentation

• URL: http://arxiv.org/abs/2303.16892v1
• Date: Wed, 29 Mar 2023 17:58:40 GMT
• Title: Multi-scale Hierarchical Vision Transformer with Cascaded Attention Decoding for Medical Image Segmentation
• Authors: Md Mostafijur Rahman and Radu Marculescu
• Abstract summary: We introduce a Multi-scale hiERarchical vIsion Transformer (MERIT) backbone network, which improves the generalizability of the model by computing SA at multiple scales. We also incorporate an attention-based decoder, namely Cascaded Attention Decoding (CASCADE), for further refinement of multi-stage features generated by MERIT.
• Score: 8.530680502975095
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Transformers have shown great success in medical image segmentation. However, transformers may exhibit a limited generalization ability due to the underlying single-scale self-attention (SA) mechanism. In this paper, we address this issue by introducing a Multi-scale hiERarchical vIsion Transformer (MERIT) backbone network, which improves the generalizability of the model by computing SA at multiple scales. We also incorporate an attention-based decoder, namely Cascaded Attention Decoding (CASCADE), for further refinement of multi-stage features generated by MERIT. Finally, we introduce an effective multi-stage feature mixing loss aggregation (MUTATION) method for better model training via implicit ensembling. Our experiments on two widely used medical image segmentation benchmarks (i.e., Synapse Multi-organ, ACDC) demonstrate the superior performance of MERIT over state-of-the-art methods. Our MERIT architecture and MUTATION loss aggregation can be used with downstream medical image and semantic segmentation tasks.

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