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| import pickle | |
| from minisom import MiniSom | |
| import numpy as np | |
| import cv2 | |
| import urllib.request | |
| import uuid | |
| from fastapi import FastAPI, HTTPException | |
| from pydantic import BaseModel | |
| from typing import List | |
| class InputData(BaseModel): | |
| data: str # image url | |
| app = FastAPI() | |
| # Función para construir el modelo manualmente | |
| def build_model(): | |
| with open('somlucuma.pkl', 'rb') as fid: | |
| somecoli = pickle.load(fid) | |
| MM = np.loadtxt('matrizMM.txt', delimiter=" ") | |
| return somecoli,MM | |
| som,MM = build_model() # Construir el modelo al iniciar la aplicación | |
| from scipy.ndimage import median_filter | |
| from scipy.signal import convolve2d | |
| def sobel(patron): | |
| gx = np.array([[-1, 0, 1], [-2, 0, 2], [-1, 0, 1]], dtype=np.float32) | |
| gy = np.array([[1, 2, 1], [0, 0, 0], [-1, -2, -1]], dtype=np.float32) | |
| Gx = convolve2d(patron, gx, mode='valid') | |
| Gy = convolve2d(patron, gy, mode='valid') | |
| return Gx, Gy | |
| def medfilt2(G, d=3): | |
| return median_filter(G, size=d) | |
| def orientacion(patron, w): | |
| Gx, Gy = sobel(patron) | |
| Gx = medfilt2(Gx) | |
| Gy = medfilt2(Gy) | |
| m, n = Gx.shape | |
| mOrientaciones = np.zeros((m // w, n // w), dtype=np.float32) | |
| for i in range(m // w): | |
| for j in range(n // w): | |
| Gx_patch = Gx[i*w:(i+1)*w, j*w:(j+1)*w] | |
| Gy_patch = Gy[i*w:(i+1)*w, j*w:(j+1)*w] | |
| YY = np.sum(2 * Gx_patch * Gy_patch) | |
| XX = np.sum(Gx_patch**2 - Gy_patch**2) | |
| mOrientaciones[i, j] = (0.5 * np.arctan2(YY, XX) + np.pi / 2.0) * (18.0 / np.pi) | |
| return mOrientaciones | |
| def redimensionar(img, h, v): | |
| return cv2.resize(img, (h, v), interpolation=cv2.INTER_AREA) | |
| def prediction(som, imgurl): | |
| archivo = f"/tmp/test-{uuid.uuid4()}.jpg" | |
| urllib.request.urlretrieve(imgurl, archivo) | |
| Xtest = redimensionar(cv2.imread(archivo),256,256) | |
| Xtest = np.array(Xtest) | |
| Xtest = cv2.cvtColor(Xtest, cv2.COLOR_BGR2GRAY) | |
| orientaciones = orientacion(Xtest, w=14) | |
| Xtest = Xtest.astype('float32') / 255.0 | |
| orientaciones = orientaciones.reshape(-1) | |
| return som.winner(orientaciones) | |
| # Ruta de predicción | |
| async def predict(data: InputData): | |
| print(f"Data: {data}") | |
| global som | |
| global MM | |
| try: | |
| # Convertir la lista de entrada a un array de NumPy para la predicción | |
| imgurl = data.data | |
| print(type(data.data)) | |
| w = prediction(som, imgurl) | |
| return {"prediction": MM[w]} | |
| except Exception as e: | |
| raise HTTPException(status_code=500, detail=str(e)) |