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dual-stream

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Dual-stream deepfake detector in PyTorch: ConvNeXt-Small spatial stream + ResSE-Spectral Tower (SRM/Bayar/FFT) frequency stream with SNR-adaptive gating, fused into a Bi-GRU video head. Zero-leakage identity splits, calibrated 3-zone thresholds, Grad-CAM diagnostics. Video AUC 0.872, LOTO macro-AUC 0.897, 60.9 FPS on T4.

  • Updated Sep 25, 2026
  • Python

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