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fft-spectrum

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yyouretoast / deepfake-detection

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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.

opencv computer-vision grad-cam pytorch pytest networkx graph-partitioning torchvision model-interpretability deepfake-detection streamlit convnext huggingface-spaces dual-stream gated-fusion fft-spectrum spatial-rich-model bayar-stamm temperature-calibration loss-masking
  • Updated Sep 18, 2026
  • Python

tsukinomiyaanalytics-dev / critical-point-time-series

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This repository presents a minimal early‑warning method for failure detection. Before structural failure, the number of critical points in the signal increases. By extracting raw, smoothed, and critical‑point sequences, and tracking the critical‑point time series, structural changes can be quantified as an early signal.

time-series signal-processing system-dynamics failure-detection frequency-analysis anomaly-detection critical-points predictive-maintenance condition-monitoring waveform-analysis nonlinear-analysis structural-health-monitoring structural-change vibration-analysis early-warning fft-spectrum critical-point-analysis
  • Updated Aug 11, 2026

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