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README.md
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This repository provides **Temporal Transformer (TEC-TT) models trained on Sentinel-2 L1C imagery**. The main TerraCodec models are released for Sentinel-2 L2A data, the L1C variants were used for declouding experiments in the paper.
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** variants of TerraCodec for **S2L1C data**.
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TEC-TT extends the TerraCodec image codecs by modeling temporal dependencies across satellite image sequences. Each frame is first encoded using an ELIC-style CNN encoder–decoder to obtain latent representations. A temporal transformer then predicts the probability distribution of the current frame’s latents conditioned on previously encoded frames.
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By exploiting redundancy across seasonal observations, TEC-TT achieves improved compression efficiency for multi-temporal satellite imagery.
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See the paper for additional architectural and training details.
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---
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If you use TerraCodec in your research, please cite:
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```
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@article{terracodec2025,
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title = {TerraCodec:
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author = {Costa Watanabe, Julen and Wittmann, Isabelle and Blumenstiel, Benedikt},
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journal = {arXiv preprint arXiv:2510.12670},
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year = {2025}
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}
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This repository provides **Temporal Transformer (TEC-TT) models trained on Sentinel-2 L1C imagery**. The main TerraCodec models are released for Sentinel-2 L2A data, the L1C variants were used for declouding experiments in the paper.
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---
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# Model Architecture
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This repository contains the **TEC-TT (Temporal Transformer)** variants of TerraCodec for **S2L1C data**.
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TEC-TT extends the TerraCodec image codecs by modeling temporal dependencies across satellite image sequences. Each frame is first encoded using an ELIC-style CNN encoder–decoder to obtain latent representations. A temporal transformer then predicts the probability distribution of the current frame’s latents conditioned on previously encoded frames.
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By exploiting redundancy across seasonal observations, TEC-TT achieves improved compression efficiency for multi-temporal satellite imagery.
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See the [paper](https://arxiv.org/abs/2510.12670) for additional architectural and training details.
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---
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If you use TerraCodec in your research, please cite:
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```
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@article{terracodec2025,
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title = {TerraCodec: Compressing Optical Earth Observation Data},
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author = {Costa Watanabe, Julen and Wittmann, Isabelle and Blumenstiel, Benedikt and Schindler, Konrad},
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journal = {arXiv preprint arXiv:2510.12670},
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year = {2025}
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}
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