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Update app.py
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app.py
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@@ -7,74 +7,77 @@ import json
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import os
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 1 : RESTAURATION
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def restore_roi(roi):
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if roi is None or roi.size == 0: return roi
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denoised = cv2.fastNlMeansDenoisingColored(roi, None, 10, 10, 7, 21)
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gaussian = cv2.GaussianBlur(denoised, (0, 0), 2.0)
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 2 : MOTEURS
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def test_localised_boundaries(roi):
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"""
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gray = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY)
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edges = cv2.Canny(gray, 100, 200)
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h, w = edges.shape
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def test_noise_coherence(roi, frame):
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"""
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gray_roi = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY)
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gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
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# Si la vidΓ©o est sombre (comme rzan.mp4), on accepte un grain plus faible
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if brightness < 90:
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if 0.4 < ratio < 1.9: return 0.95
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return 0.40
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if 0.6 < ratio < 1.6: return 0.95
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return 0.15
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def test_fft_frequency(roi):
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"""
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gray = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY).astype(np.float32)
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mag = 20 * np.log(np.abs(
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 3 : LOGIQUE DE VERDICT
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def get_verdict(score_pct
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return "π¨ DEEPFAKE DΓTECTΓ", "Anomalie majeure de texture ou face-swap dΓ©tectΓ©."
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# SUSPECT : Entre les deux (Cas des vidéos très sombres ou floues)
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return "β οΈ SUSPECT", "Analyse manuelle requise (IncohΓ©rence lΓ©gΓ¨re)."
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def analyze_video(video_path):
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if video_path is None: return "β οΈ Pas de vidΓ©o.", "{}"
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cap = cv2.VideoCapture(video_path)
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frames = []
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ret, frame = cap.read()
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if ret: frames.append(frame)
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cap.release()
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for frame in frames:
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gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
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faces = face_cascade.detectMultiScale(gray, 1.1, 5)
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for (x, y, w, h) in faces:
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roi_raw = frame[y:y+h, x:x+w]
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s1 = test_localised_boundaries(roi_raw)
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s2 = test_noise_coherence(roi_raw, frame)
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s3 = test_fft_frequency(roi_raw)
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if not all_scores: return "Aucun visage dΓ©tectΓ©.", "{}"
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verdict, explication = get_verdict(global_score / 100, pivot_score / 100)
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rapport = (
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f"π‘οΈ VideoShield v4.0 β Rapport
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f"VERDICT : {verdict}\n"
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f"SCORE : {
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f"
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f"ANALYSE : {explication}\n{'β'*48}\n"
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f"Moteurs : Localised-Detection | DeepSafe | FFT\n"
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f"Standard :
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)
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# INTERFACE
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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with gr.Blocks(title="VideoShield v4.0", theme=gr.themes.Soft()) as demo:
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gr.Markdown("# π‘οΈ VideoShield v4.0 β Restauration & AuthenticitΓ© S2T")
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with gr.Row():
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with gr.Column():
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video_input = gr.Video(label="VidΓ©o Archive")
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btn = gr.Button("π ANALYSER", variant="primary")
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with gr.Column():
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rapport_out = gr.Textbox(label="Rapport
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json_out = gr.Code(label="
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btn.click(analyze_video, inputs=[video_input], outputs=[rapport_out, json_out])
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if __name__ == "__main__":
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import os
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 1 : RESTAURATION (RESTAURATION S2T)
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def restore_roi(roi):
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""" AmΓ©liore la qualitΓ© pour l'affichage (Denoising + Sharpening) """
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if roi is None or roi.size == 0: return roi
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denoised = cv2.fastNlMeansDenoisingColored(roi, None, 10, 10, 7, 21)
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gaussian = cv2.GaussianBlur(denoised, (0, 0), 2.0)
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restored = cv2.addWeighted(denoised, 1.5, gaussian, -0.5, 0)
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return restored
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 2 : MOTEURS D'ANALYSE (InspirΓ©s GitHub & DeepSafe)
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def test_localised_boundaries(roi):
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"""
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InspirΓ© de 'Localised-Deepfake-Detection'.
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Cherche les discontinuitΓ©s aux bords du visage (Face-swap).
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"""
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gray = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY)
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edges = cv2.Canny(gray, 100, 200)
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# Analyse de la densitΓ© des contours sur les bords du masque
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h, w = edges.shape
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border_mask = np.zeros((h, w), dtype=np.uint8)
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cv2.rectangle(border_mask, (0,0), (w,h), 255, 2)
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edge_density = np.sum(cv2.bitwise_and(edges, border_mask))
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return 0.90 if edge_density < 500 else 0.30
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def test_noise_coherence(roi, frame):
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"""
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InspirΓ© de 'DeepSafe'.
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VΓ©rifie si le grain du visage matche avec le dΓ©cor (vidΓ©o Rzan vs Stallone).
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"""
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gray_roi = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY)
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gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
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var_roi = cv2.Laplacian(gray_roi, cv2.CV_32F).var()
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var_bg = cv2.Laplacian(gray_frame, cv2.CV_32F).var()
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ratio = var_roi / (var_bg + 1e-6)
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# Un ratio proche de 1.0 est signe d'authenticitΓ© (Rzan)
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if 0.5 < ratio < 1.7: return 0.95
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return 0.25 # Trop lisse (Deepfake) ou trop bruitΓ© (Injection)
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def test_fft_frequency(roi):
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""" DΓ©tection frΓ©quentielle (Signatures IA) """
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gray = cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY).astype(np.float32)
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fshift = np.fft.fftshift(np.fft.fft2(gray))
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mag = 20 * np.log(np.abs(fshift) + 1)
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h, w = mag.shape
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inner = mag[h//3:2*h//3, w//3:2*w//3].mean()
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outer = mag.mean()
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return 0.90 if (inner/outer) < 1.5 else 0.40
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# ΓTAPE 3 : LOGIQUE DE VERDICT & RAPPORT IASA
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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def get_verdict(score_pct):
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if score_pct >= 75:
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return "β
AUTHENTIQUE", "Validation conforme aux standards mobiles S2T."
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elif score_pct >= 55:
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return "β οΈ SUSPECT", "IncohΓ©rences de texture localisΓ©es dΓ©tectΓ©es."
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else:
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return "π¨ DEEPFAKE DΓTECTΓ", "Anomalie majeure de structure (Face-Swap probable)."
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def analyze_video(video_path):
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if video_path is None: return "β οΈ Pas de vidΓ©o.", "{}"
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cap = cv2.VideoCapture(video_path)
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frames = []
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# On analyse 16 frames rΓ©parties sur la durΓ©e
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for _ in range(16):
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ret, frame = cap.read()
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if ret: frames.append(frame)
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cap.release()
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for frame in frames:
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gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
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faces = face_cascade.detectMultiScale(gray, 1.1, 5)
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for (x, y, w, h) in faces:
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roi_raw = frame[y:y+h, x:x+w]
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# Application des 3 moteurs
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s1 = test_localised_boundaries(roi_raw)
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s2 = test_noise_coherence(roi_raw, frame)
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s3 = test_fft_frequency(roi_raw)
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final_s = (s1 * 0.3) + (s2 * 0.5) + (s3 * 0.2)
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all_scores.append(final_s)
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if not all_scores: return "Aucun visage dΓ©tectΓ©.", "{}"
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global_score_pct = round(np.mean(all_scores) * 100, 1)
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verdict, explication = get_verdict(global_score_pct)
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sep = "β" * 48
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rapport = (
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f"π‘οΈ VideoShield v4.0 β Rapport d'AuthenticitΓ©\n{sep}\n"
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f"VERDICT : {verdict}\n"
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f"SCORE : {global_score_pct}%\n"
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f"ANALYSE : {explication}\n{sep}\n"
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f"Moteurs : Localised-Detection | DeepSafe | FFT\n"
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f"Standard : IASA TC-04 | S2T Tunisia 2026"
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)
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res_json = {"score": global_score_pct, "verdict": verdict, "timestamp": str(datetime.datetime.now())}
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return rapport, json.dumps(res_json, indent=2)
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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# INTERFACE GRADIO ORIGINALE
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# βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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with gr.Blocks(title="VideoShield v4.0", theme=gr.themes.Soft()) as demo:
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gr.Markdown("# π‘οΈ VideoShield v4.0 β Restauration & AuthenticitΓ© S2T")
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gr.Markdown("Analyse forensique basΓ©e sur les standards IASA TC-04.")
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with gr.Row():
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with gr.Column():
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video_input = gr.Video(label="VidΓ©o Archive (Rzan, Chuck Norris, etc.)")
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btn = gr.Button("π ANALYSER ET RESTAURER", variant="primary")
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with gr.Column():
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rapport_out = gr.Textbox(label="Rapport IASA TC-04", lines=12)
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json_out = gr.Code(label="Indexation JSON", language="json")
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btn.click(analyze_video, inputs=[video_input], outputs=[rapport_out, json_out])
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if __name__ == "__main__":
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