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GitHub
5月
Junjue-Wang/Rank1-Ali-Tianchi-Real-World-Image-Forgery-Localization-Challenge
篡改问题,主要为二分语义分割问题,篡改任务主要是找出,擦除、替换、粘贴等篡改区域。通过分析已提供 4k 训练集,发现篡改区域(正)与非篡改区域(负)样本分布极度不均衡,存在长尾效应,如图 1 所示。因此需要克服样本不均衡问题,以修正模型优化 ...
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