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copia_de_training_fruit_vegetable.py
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# -*- coding: utf-8 -*-
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"""Copia de Training_fruit_vegetable.ipynb
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Automatically generated by Colaboratory.
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Original file is located at
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https://colab.research.google.com/drive/1h-zNQjkVokq9MDVJb61PPvYb4f1eJcF6
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Montaje del disco
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"""
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from google.colab import drive
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drive.mount('/content/drive')
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"""Importar librer铆as"""
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import tensorflow as tf
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import matplotlib.pyplot as plt
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"""Preprocesamiento de datos"""
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#Preprocesamiento de imagenes del conjunto de entrenamiento
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training_set = tf.keras.utils.image_dataset_from_directory(
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'/content/drive/MyDrive/TallerIII/FruitTrainingDataset/train',
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labels="inferred",
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label_mode="categorical",
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class_names=None,
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color_mode="rgb",
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batch_size=32,
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image_size=(64, 64),
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shuffle=True,
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seed=None,
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validation_split=None,
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subset=None,
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interpolation="bilinear",
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follow_links=False,
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crop_to_aspect_ratio=False
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)
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#Preprocesamiento de imagenes del conjunto de validacion
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validation_set = tf.keras.utils.image_dataset_from_directory(
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'/content/drive/MyDrive/TallerIII/FruitTrainingDataset/validation',
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labels="inferred",
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label_mode="categorical",
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class_names=None,
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color_mode="rgb",
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batch_size=32,
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image_size=(64, 64),
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shuffle=True,
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seed=None,
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validation_split=None,
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subset=None,
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interpolation="bilinear",
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follow_links=False,
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crop_to_aspect_ratio=False
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)
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"""Crear el modelo"""
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model = tf.keras.models.Sequential()
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"""Capa de convoluci贸n"""
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model.add(tf.keras.layers.Conv2D(filters=32,kernel_size=3,padding='same',activation='relu',input_shape=[64,64,3]))
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model.add(tf.keras.layers.Conv2D(filters=32,kernel_size=3,activation='relu'))
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model.add(tf.keras.layers.MaxPool2D(pool_size=2,strides=2))
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model.add(tf.keras.layers.Dropout(0.25))
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model.add(tf.keras.layers.Conv2D(filters=64,kernel_size=3,padding='same',activation='relu'))
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model.add(tf.keras.layers.Conv2D(filters=64,kernel_size=3,activation='relu'))
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model.add(tf.keras.layers.MaxPool2D(pool_size=2,strides=2))
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model.add(tf.keras.layers.Dropout(0.25))
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model.add(tf.keras.layers.Flatten())
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model.add(tf.keras.layers.Dense(units=512,activation='relu'))
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model.add(tf.keras.layers.Dense(units=256,activation='relu'))
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model.add(tf.keras.layers.Dropout(0.5)) #To avoid overfitting
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#Output Layer
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model.add(tf.keras.layers.Dense(units=36,activation='softmax'))
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"""Capas del modelo"""
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model.summary()
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"""Compilaci贸n del modelo"""
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model.compile(optimizer='adam',loss='categorical_crossentropy',metrics=['accuracy',"mean_absolute_error","Precision","Recall",tf.keras.metrics.AUC()])
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"""Configuraci贸n tensorboard"""
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# Commented out IPython magic to ensure Python compatibility.
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from tensorflow.keras.callbacks import ModelCheckpoint
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import tensorflow as tf
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import datetime
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# %load_ext tensorboard
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#!rm -rf ./logs/
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log_dir = "logs/fit/" + datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
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tensorboard_callback = tf.keras.callbacks.TensorBoard(log_dir=log_dir, histogram_freq=1)
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"""Ruta"""
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ruta_rfv="/content/drive/MyDrive/TallerIII/Reconocimiento_frutas_verduras"
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"""Punto de control del modelo y devoluci贸n de llamada"""
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checkpoint_callback = ModelCheckpoint(
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filepath=ruta_rfv + '/peso2/weights.{epoch:1d}.h5',
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save_weights_only=True,
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save_best_only=False,
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verbose=1
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)
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"""Entrenamiento del modelo"""
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epochs = 10
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history=model.fit(x=training_set,validation_data=validation_set,epochs=epochs, callbacks=[tensorboard_callback, checkpoint_callback])
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import os
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import re
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#Codigo para extraer el numero maximo de epoca almacenado en un directorio
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# Ruta del directorio
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dir_path = "/content/drive/MyDrive/Taller3/Reconocimiento_frutas_verduras/peso2"
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# Lista para almacenar los n煤meros extra铆dos
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num_list = []
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# Recorrer todos los archivos en el directorio
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for filename in os.listdir(dir_path):
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# Comprobar si el archivo es uno de los archivos de pesos
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if filename.startswith("weights.") and filename.endswith(".h5"):
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# Extraer el n煤mero del nombre del archivo usando una expresi贸n regular
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match = re.search(r'\d+', filename)
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if match:
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# Convertir el n煤mero a un entero y a帽adirlo a la lista
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num = int(match.group())
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num_list.append(num)
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# Imprimir la lista de n煤meros
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print(num_list)
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# Variable para almacenar el n煤mero m谩ximo
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max_num = max(num_list) if num_list else None
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# Imprimir el n煤mero m谩ximo
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print(max_num)
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max_num_string = str(max_num)
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print(max_num_string)
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#Definir directorio que contiene el archivo de pesos de la ultima epoca
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ruta = ruta_rfv + '/peso2/weights.' + max_num_string +'.h5'
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print(ruta)
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#Cargar el archivo de pesos de la ultima epoca ejecutada
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model.load_weights(ruta)
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#Entrenar el modelo desde la ultima epoca almacenada usando el parametro initial_epoch
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history = model.fit(x=training_set,validation_data=validation_set, epochs=epochs, initial_epoch=max_num, callbacks=[tensorboard_callback, checkpoint_callback])
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"""Curvas de entrenamiento"""
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# Commented out IPython magic to ensure Python compatibility.
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# %tensorboard --logdir logs/fit
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"""Evaluar el modelo entrenado"""
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#Precisi贸n del conjunto de entrenamiento
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train_loss, train_acc = model.evaluate(training_set)
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print('Training accuracy:', train_acc)
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#Precisi贸n del conjunto de validaci贸n
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val_loss, val_acc = model.evaluate(validation_set)
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print('Validation accuracy:', val_acc)
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"""Guardar el modelo"""
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ruta_modelo=ruta_rfv + "/modelo/modeloRFV.h5"
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model.save(ruta_modelo)
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"""Guardar pesos"""
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ruta_pesos=ruta_rfv + "/modelo/pesosRFV.h5"
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model.save_weights(ruta_pesos)
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