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Update app.py
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app.py
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import io
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import torch
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from fastapi import FastAPI, UploadFile, File, Form
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from fastapi.responses import StreamingResponse
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from PIL import Image
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from diffusers import StableDiffusionPipeline, DDIMScheduler
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from
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from ip_adapter.ip_adapter_faceid import IPAdapterFaceID
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from insightface.app import FaceAnalysis
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app = FastAPI(title="IP-Adapter-FaceID API")
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# Variables globales para los modelos
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app_insight = None
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ip_model = None
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global app_insight, ip_model
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device = "cuda" if torch.cuda.is_available() else "cpu"
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# 1. Inicializar InsightFace para detectar rostros
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app_insight = FaceAnalysis(name="buffalo_l", providers=['CUDAExecutionProvider', 'CPUExecutionProvider'])
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app_insight.prepare(ctx_id=0, det_size=(640, 640))
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# 2. Inicializar Stable Diffusion v1.5
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noise_scheduler = DDIMScheduler(
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num_train_timesteps=1000,
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beta_start=0.00085,
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scheduler=noise_scheduler
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).to(device)
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# 3.
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@app.get("/")
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def read_root():
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return {"status": "running", "
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@app.post("/predict")
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async def predict(
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num_inference_steps: int = Form(30),
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face_image: UploadFile = File(...)
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):
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import numpy as np
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cv_img = np.array(image)
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faces = app_insight.get(cv_img)
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if len(faces) == 0:
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return {"error": "No se detectó ningún rostro en la imagen provista."}
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face_id_embed=
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import io
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import torch
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import numpy as np
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from fastapi import FastAPI, UploadFile, File, Form
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from fastapi.responses import StreamingResponse
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from PIL import Image
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# Importaciones de IA
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from diffusers import StableDiffusionPipeline, DDIMScheduler
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from huggingface_hub import hf_hub_download
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from ip_adapter.ip_adapter_faceid import IPAdapterFaceID
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from insightface.app import FaceAnalysis
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app = FastAPI(title="IP-Adapter-FaceID API")
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# Variables globales para evitar recargar los modelos en cada petición
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app_insight = None
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ip_model = None
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global app_insight, ip_model
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device = "cuda" if torch.cuda.is_available() else "cpu"
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print(f"Iniciando servidor. Hardware detectado: {device.upper()}")
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# 1. Inicializar InsightFace para detectar rostros
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print("Cargando InsightFace...")
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app_insight = FaceAnalysis(name="buffalo_l", providers=['CUDAExecutionProvider', 'CPUExecutionProvider'])
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app_insight.prepare(ctx_id=0, det_size=(640, 640))
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# 2. Inicializar Stable Diffusion v1.5
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print("Cargando modelo base de Stable Diffusion...")
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base_model_path = "SG161222/Realistic_Vision_V4.0_noVAE"
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noise_scheduler = DDIMScheduler(
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num_train_timesteps=1000,
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beta_start=0.00085,
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scheduler=noise_scheduler
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).to(device)
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# 3. Descargar y cargar las capas de IP-Adapter FaceID
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print("Descargando pesos de IP-Adapter-FaceID...")
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ip_ckpt_path = hf_hub_download(
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repo_id="h94/IP-Adapter-FaceID",
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filename="ip-adapter-faceid_sd15.bin",
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repo_type="model"
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)
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print("Acoplando IP-Adapter al modelo base...")
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ip_model = IPAdapterFaceID(pipe, ip_ckpt_path, device, num_tokens=4)
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print("¡Todos los modelos cargados exitosamente!")
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@app.get("/")
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def read_root():
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return {"status": "running", "message": "API de IP-Adapter-FaceID lista. Realiza un POST a /predict"}
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@app.post("/predict")
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async def predict(
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num_inference_steps: int = Form(30),
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face_image: UploadFile = File(...)
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):
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try:
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# 1. Leer y preparar la imagen
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face_bytes = await face_image.read()
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image = Image.open(io.BytesIO(face_bytes)).convert("RGB")
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cv_img = np.array(image)
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# 2. Extraer el rostro (Embedding) usando InsightFace
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faces = app_insight.get(cv_img)
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if len(faces) == 0:
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return {"error": "No se detectó ningún rostro en la imagen provista. Por favor intenta con otra foto."}
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face_id_embed = torch.from_numpy(faces[0].normed_embedding).unsqueeze(0).unsqueeze(0)
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# 3. Generar la imagen
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images = ip_model.generate(
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prompt=prompt,
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negative_prompt=negative_prompt,
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face_id_embed=face_id_embed,
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num_samples=1,
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num_inference_steps=num_inference_steps,
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seed=42 # Cambia o recibe este parámetro si quieres resultados aleatorios
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)
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# 4. Formatear la respuesta como PNG
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output_image = images[0]
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img_byte_arr = io.BytesIO()
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output_image.save(img_byte_arr, format='PNG')
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img_byte_arr.seek(0)
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return StreamingResponse(img_byte_arr, media_type="image/png")
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except Exception as e:
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return {"error": str(e)}
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