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arXiv 2507.04366cs.LGcs.CV
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Time2Agri:面向农业监测的时间预训练任务

Time2Agri: Temporal Pretext Tasks for Agricultural Monitoring

Moti Rattan Gupta, Anupam Sobti

AI总结:

本文提出 Time2Agri,针对农业遥感中自然周期这一时间特征设计时间差预测、时间频率预测和未来帧预测三种预训练任务,在作物制图、产量预测和田块边界划定上均优于现有基线。

摘要:

自监督学习(SSL)已成为标签高效学习的重要范式,并被遥感基础模型(RSFMs)广泛采用。最近的遥感基础模型,包括 SatMAE 和 DoFA,主要依赖掩码自编码(MAE)、对比学习或二者的某种组合。然而,这些预训练任务往往忽视了农业景观独特的时间特征,即自然周期。受这一空白启发,我们提出了三种新颖的农业特定预训练任务,即时间差预测(TD)、时间频率预测(FP)和未来帧预测(FF)。在 SICKLE 数据集上的综合评估表明,FF 在作物制图上达到 69.6% 的 IoU,FP 将产量预测误差降低到 30.7% 的 MAPE,均优于所有基线,而 TD 在大多数任务上保持竞争力。此外,我们还将 FF 扩展到印度全国尺度,在 FTW India 数据集上的田块边界划定中达到 54.2% 的 IoU,优于所有基线。

英文摘要:

Self Supervised Learning(SSL) has emerged as a prominent paradigm for label-efficient learning, and has been widely utilized by remote sensing foundation models(RSFMs). Recent RSFMs including SatMAE, DoFA, primarily rely on masked autoencoding(MAE), contrastive learning or some combination of them. However, these pretext tasks often overlook the unique temporal characteristics of agricultural landscape, namely nature's cycle. Motivated by this gap, we propose three novel agriculture-specific pretext tasks, namely Time-Difference Prediction(TD), Temporal Frequency Prediction(FP), and Future-Frame Prediction(FF). Comprehensive evaluation on SICKLE dataset shows FF achieves 69.6% IoU on crop mapping and FP reduces yield prediction error to 30.7% MAPE, outperforming all baselines, and TD remains competitive on most tasks. Further, we also scale FF to the national scale of India, achieving 54.2% IoU outperforming all baselines on field boundary delineation on FTW India dataset.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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