InterNet: Unsupervised Cross-modal Homography Estimation Based on Interleaved Modality Transfer and Self-supervised Homography Prediction

• URL: http://arxiv.org/abs/2409.17993v2
• Date: Fri, 27 Sep 2024 02:35:47 GMT
• Title: InterNet: Unsupervised Cross-modal Homography Estimation Based on Interleaved Modality Transfer and Self-supervised Homography Prediction
• Authors: Junchen Yu, Si-Yuan Cao, Runmin Zhang, Chenghao Zhang, Jianxin Hu, Zhu Yu, Beinan Yu, Hui-liang Shen,
• Abstract summary: InterNet integrates modality transfer and self-supervised homography estimation. InterNet achieves the state-of-the-art (SOTA) performance among unsupervised methods.
• Score: 9.313783457777125
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose a novel unsupervised cross-modal homography estimation framework, based on interleaved modality transfer and self-supervised homography prediction, named InterNet. InterNet integrates modality transfer and self-supervised homography estimation, introducing an innovative interleaved optimization framework to alternately promote both components. The modality transfer gradually narrows the modality gaps, facilitating the self-supervised homography estimation to fully leverage the synthetic intra-modal data. The self-supervised homography estimation progressively achieves reliable predictions, thereby providing robust cross-modal supervision for the modality transfer. To further boost the estimation accuracy, we also formulate a fine-grained homography feature loss to improve the connection between two components. Furthermore, we employ a simple yet effective distillation training technique to reduce model parameters and improve cross-domain generalization ability while maintaining comparable performance. Experiments reveal that InterNet achieves the state-of-the-art (SOTA) performance among unsupervised methods, and even outperforms many supervised methods such as MHN and LocalTrans.

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