MIDL 2023 · PMLR Vol. 227

ViT-AE++

Improving Vision Transformer Autoencoder for Self-supervised Medical Image Representations

Chinmay Prabhakar · Hongwei Li · Jiancheng Yang · Suprosanna Shit · Benedikt Wiestler · Bjoern Menze

Presented at MIDL 2023; indexed in the PMLR 227 proceedings listing.

ViT-AE++ Figure 1 (original paper architecture).
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ViT-AE++ Figure 1 (original paper architecture).

Overview

Why this work matters

Masked vision transformer autoencoders learn image representations without manual annotation. ViT-AE++ improves this approach for 2D and 3D medical images by complementing pixel reconstruction with structure-aware auxiliary objectives and representation alignment across two masked views.

Approach

How the method works

01

Masked views

Create randomly masked views of a 2D image or 3D volume and encode the visible patches.

02

Structure-aware recovery

Reconstruct the input with pixel-level and auxiliary perceptual and edge-aware losses.

03

Contrastive alignment

Use representations from two masked views to encourage informative, consistent features.

Research directions

Contributions and applications

Annotation-free pretraining

Learn useful image features before task-specific annotation or fine-tuning.

2D and 3D imaging

Extend the masked-autoencoding strategy to volumetric medical images.

Reconstruction + representation

Jointly improve structural reconstruction and agreement between masked-view embeddings.

Resources

Paper and implementation

Read the published paper for the full methodology, experimental evaluation, and original figures. The public GitHub repository includes the research code.

Reference

Citation

@InProceedings{pmlr-v227-prabhakar24b,
  title = {{ViT-AE++}: Improving Vision Transformer Autoencoder for Self-supervised Medical Image Representations},
  author = {Prabhakar, Chinmay and Li, Hongwei and Yang, Jiancheng and Shit, Suprosanna and Wiestler, Benedikt and Menze, Bjoern},
  booktitle = {Medical Imaging with Deep Learning},
  pages = {666--679},
  year = {2024},
  volume = {227},
  series = {Proceedings of Machine Learning Research},
  publisher = {PMLR},
  url = {https://proceedings.mlr.press/v227/prabhakar24b.html}
}

Use the citation details from the publisher if the publication record is updated.

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