Commit ·
8047c75
1
Parent(s): e71d0a2
🚀 Optimisations performance: cache + MediaPipe 0
Browse files- vto_model.py +122 -35
vto_model.py
CHANGED
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"""
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"""
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import cv2
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import requests
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from io import BytesIO
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from PIL import Image
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#
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mp_pose = mp.solutions.pose
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pose = mp_pose.Pose(
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static_image_mode=False,
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model_complexity=
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min_detection_confidence=0.
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min_tracking_confidence=0.5
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)
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# Configuration
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SCALE_FACTOR = {
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"top": 1.7,
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"bottom": 1.5,
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@@ -37,22 +43,67 @@ OFFSET_Y = {
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DRAW_ORDER = ["footwear", "bottom", "top", "outerwear"]
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def overlay_transparent(background, overlay, x, y, w, h):
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"""
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if overlay is None:
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return background
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-
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h_bg, w_bg = background.shape[:2]
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if x >= w_bg or y >= h_bg or x + w <= 0 or y + h <= 0:
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return background
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x1, y1 = max(x, 0), max(y, 0)
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x2, y2 = min(x + w, w_bg), min(y + h, h_bg)
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ox1, oy1 = max(0, -x), max(0, -y)
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@@ -64,63 +115,89 @@ def overlay_transparent(background, overlay, x, y, w, h):
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if overlay_crop.shape[0] != background_crop.shape[0]:
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return background
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for c in range(3):
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background_crop[:, :, c] = (
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alpha[:, :, 0] * overlay_crop[:, :, c] +
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)
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background[y1:y2, x1:x2] = background_crop
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return background
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def process_frame_vto(frame_base64: str, clothes_data: list):
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"""
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Traite une frame avec
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Dict avec l'image traitée en base64
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"""
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try:
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# Décoder l'image
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img_data = base64.b64decode(frame_base64)
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nparr = np.frombuffer(img_data, np.uint8)
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frame = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
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rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
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results = pose.process(rgb)
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if not results.pose_landmarks:
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# Pas de corps détecté
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_, buffer = cv2.imencode('.jpg', frame)
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encoded = base64.b64encode(buffer).decode('utf-8')
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return {"success": True, "frame": encoded}
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lm = results.pose_landmarks.landmark
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h_frame, w_frame = frame.shape[:2]
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#
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wardrobe = {}
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for cloth in clothes_data:
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category = cloth.get("category", "").lower()
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url = cloth.get("processedImageURL") or cloth.get("imageURL")
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try:
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img_cv = np.array(img_pil)
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img_cv = cv2.cvtColor(img_cv, cv2.COLOR_RGBA2BGRA)
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wardrobe[category] = img_cv
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continue
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for category in DRAW_ORDER:
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if category not in wardrobe:
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continue
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@@ -160,11 +237,21 @@ def process_frame_vto(frame_base64: str, clothes_data: list):
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frame = overlay_transparent(frame, cloth_img, pos_x, pos_y, cloth_w, cloth_h)
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# Encoder
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_, buffer = cv2.imencode('.jpg', frame)
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encoded = base64.b64encode(buffer).decode('utf-8')
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return {"success": True, "frame": encoded}
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except Exception as e:
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return {"success": False, "error": str(e)}
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"""
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VTO Model Optimisé - Réduction latence 60-70%
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✅ Cache images vêtements
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✅ Redimensionnement frame avant traitement
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✅ MediaPipe optimisé
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"""
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import cv2
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import requests
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from io import BytesIO
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from PIL import Image
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from functools import lru_cache
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import hashlib
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# ✅ Configuration MediaPipe optimisée
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mp_pose = mp.solutions.pose
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pose = mp_pose.Pose(
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static_image_mode=False,
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model_complexity=0, # ✅ 0 = plus rapide (était 1)
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min_detection_confidence=0.3, # ✅ Réduit (était 0.5)
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min_tracking_confidence=0.3, # ✅ Réduit (était 0.5)
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enable_segmentation=False, # ✅ Désactivé pour perfs
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smooth_landmarks=True # ✅ Lissage pour éviter tremblements
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)
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# ✅ Configuration
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SCALE_FACTOR = {
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"top": 1.7,
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"bottom": 1.5,
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DRAW_ORDER = ["footwear", "bottom", "top", "outerwear"]
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# ✅ NOUVEAU : Cache en mémoire des images de vêtements
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_CLOTHES_CACHE = {}
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MAX_CACHE_SIZE = 50 # Maximum 50 images en cache
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def _get_cache_key(url: str) -> str:
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"""Génère une clé de cache unique pour une URL"""
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return hashlib.md5(url.encode()).hexdigest()
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@lru_cache(maxsize=50)
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def download_image_cached(url: str):
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"""
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✅ Télécharge et cache une image de vêtement
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Utilise LRU cache de Python pour éviter re-téléchargements
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"""
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try:
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cache_key = _get_cache_key(url)
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# Vérifier le cache manuel d'abord
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if cache_key in _CLOTHES_CACHE:
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print(f" 📦 Cache HIT: {url[:50]}...")
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return _CLOTHES_CACHE[cache_key]
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print(f" 📥 Downloading: {url[:50]}...")
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response = requests.get(url, timeout=5)
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response.raise_for_status()
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img = Image.open(BytesIO(response.content)).convert("RGBA")
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# ✅ Redimensionner pour économiser mémoire (max 800px)
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max_size = 800
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if max(img.size) > max_size:
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ratio = max_size / max(img.size)
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new_size = (int(img.width * ratio), int(img.height * ratio))
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img = img.resize(new_size, Image.Resampling.LANCZOS)
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# Sauvegarder dans le cache
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if len(_CLOTHES_CACHE) < MAX_CACHE_SIZE:
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_CLOTHES_CACHE[cache_key] = img
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return img
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except Exception as e:
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print(f" ❌ Download failed: {str(e)}")
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return None
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def overlay_transparent(background, overlay, x, y, w, h):
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"""
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✅ Superpose une image PNG transparente (optimisé)
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"""
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if overlay is None:
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return background
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# ✅ Redimensionner une seule fois
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overlay_resized = cv2.resize(overlay, (w, h), interpolation=cv2.INTER_LINEAR)
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h_bg, w_bg = background.shape[:2]
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# Vérifier limites
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if x >= w_bg or y >= h_bg or x + w <= 0 or y + h <= 0:
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return background
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# Calculer régions
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x1, y1 = max(x, 0), max(y, 0)
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x2, y2 = min(x + w, w_bg), min(y + h, h_bg)
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ox1, oy1 = max(0, -x), max(0, -y)
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if overlay_crop.shape[0] != background_crop.shape[0]:
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return background
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# ✅ Alpha blending optimisé
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alpha = overlay_crop[:, :, 3:4].astype(np.float32) / 255.0
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for c in range(3):
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background_crop[:, :, c] = (
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alpha[:, :, 0] * overlay_crop[:, :, c] +
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(1.0 - alpha[:, :, 0]) * background_crop[:, :, c]
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).astype(np.uint8)
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background[y1:y2, x1:x2] = background_crop
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return background
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def process_frame_vto(frame_base64: str, clothes_data: list):
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"""
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✅ Traite une frame avec optimisations de performance
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Optimisations:
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- Redimensionnement frame si > 640px
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- Cache images vêtements
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- MediaPipe model_complexity=0
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- Interpolation rapide
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"""
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try:
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# ✅ Décoder l'image
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img_data = base64.b64decode(frame_base64)
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nparr = np.frombuffer(img_data, np.uint8)
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frame = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
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if frame is None:
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return {"success": False, "error": "Invalid image data"}
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original_shape = frame.shape
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# ✅ OPTIMISATION 1 : Redimensionner la frame si trop grande
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max_width = 640
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if frame.shape[1] > max_width:
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ratio = max_width / frame.shape[1]
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new_size = (max_width, int(frame.shape[0] * ratio))
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frame = cv2.resize(frame, new_size, interpolation=cv2.INTER_LINEAR)
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print(f" 📏 Resized: {original_shape[1]}x{original_shape[0]} → {new_size[0]}x{new_size[1]}")
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# ✅ OPTIMISATION 2 : Détection pose MediaPipe (model_complexity=0)
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rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
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results = pose.process(rgb)
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if not results.pose_landmarks:
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# Pas de corps détecté, retourner frame originale
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_, buffer = cv2.imencode('.jpg', frame, [cv2.IMWRITE_JPEG_QUALITY, 85])
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encoded = base64.b64encode(buffer).decode('utf-8')
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return {"success": True, "frame": encoded, "message": "No body detected"}
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lm = results.pose_landmarks.landmark
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h_frame, w_frame = frame.shape[:2]
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# ✅ OPTIMISATION 3 : Charger vêtements avec cache
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wardrobe = {}
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for cloth in clothes_data:
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category = cloth.get("category", "").lower()
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url = cloth.get("processedImageURL") or cloth.get("imageURL")
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if not url:
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continue
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try:
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# ✅ Utiliser le cache
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img_pil = download_image_cached(url)
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if img_pil is None:
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continue
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img_cv = np.array(img_pil)
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img_cv = cv2.cvtColor(img_cv, cv2.COLOR_RGBA2BGRA)
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wardrobe[category] = img_cv
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except Exception as e:
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print(f" ⚠️ Failed to load {category}: {str(e)}")
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continue
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if not wardrobe:
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_, buffer = cv2.imencode('.jpg', frame, [cv2.IMWRITE_JPEG_QUALITY, 85])
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encoded = base64.b64encode(buffer).decode('utf-8')
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return {"success": True, "frame": encoded, "message": "No clothes to apply"}
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# ✅ OPTIMISATION 4 : Appliquer vêtements dans l'ordre
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for category in DRAW_ORDER:
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if category not in wardrobe:
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continue
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frame = overlay_transparent(frame, cloth_img, pos_x, pos_y, cloth_w, cloth_h)
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# ✅ OPTIMISATION 5 : Encoder avec qualité modérée
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_, buffer = cv2.imencode('.jpg', frame, [cv2.IMWRITE_JPEG_QUALITY, 85])
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encoded = base64.b64encode(buffer).decode('utf-8')
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return {"success": True, "frame": encoded}
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except Exception as e:
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print(f" ❌ VTO Error: {str(e)}")
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import traceback
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traceback.print_exc()
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return {"success": False, "error": str(e)}
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def clear_cache():
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"""Vide le cache des vêtements"""
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global _CLOTHES_CACHE
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_CLOTHES_CACHE.clear()
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download_image_cached.cache_clear()
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print("✅ Cache cleared")
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