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okeowo1014
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Upload 4 files
Browse files- .gitattributes +1 -0
- cat_dog_classifier.keras +3 -0
- predictor.py +32 -0
- requirements.txt +0 -0
- train.py +78 -0
.gitattributes
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*.zip filter=lfs diff=lfs merge=lfs -text
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*.zst filter=lfs diff=lfs merge=lfs -text
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*tfevents* filter=lfs diff=lfs merge=lfs -text
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*.zip filter=lfs diff=lfs merge=lfs -text
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*.zst filter=lfs diff=lfs merge=lfs -text
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*tfevents* filter=lfs diff=lfs merge=lfs -text
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cat_dog_classifier.keras filter=lfs diff=lfs merge=lfs -text
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cat_dog_classifier.keras
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version https://git-lfs.github.com/spec/v1
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oid sha256:2a199caa07ed268b554abeba28751f69eedb73ba58dc1ee4984bb320dab1c1d3
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size 59234141
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predictor.py
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import cv2 # Assuming you have OpenCV installed
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import numpy as np
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from tensorflow.keras.preprocessing import image
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import tensorflow as tf
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# Load the saved model
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model = tf.keras.models.load_model('cat_dog_classifier.keras') # Replace with your model filename
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img_width, img_height = 224, 224 # VGG16 expects these dimensions
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# Function to preprocess an image for prediction
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def preprocess_image(img_path):
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img = cv2.imread(img_path) # Read the image
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img = cv2.resize(img, (img_width, img_height)) # Resize according to model input size
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img = img.astype('float32') / 255.0 # Normalize pixel values
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img = np.expand_dims(img, axis=0) # Add a batch dimension (model expects batch of images)
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return img
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# Get the path to your new image
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new_image_path = 'test1/11.jpg' # Replace with your image path
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# Preprocess the image
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preprocessed_image = preprocess_image(new_image_path)
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# Make prediction
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prediction = model.predict(preprocessed_image)
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# Decode the prediction (assuming class 0 is cat, 1 is dog)
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predicted_class = int(prediction[0][0] > 0.5) # Threshold of 0.5 for binary classification
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class_names = ['cat', 'dog'] # Adjust class names according to your model
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print(f"Predicted class: {class_names[predicted_class]}")
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requirements.txt
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Binary file (112 Bytes). View file
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train.py
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import tensorflow as tf
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from tensorflow.keras.preprocessing.image import ImageDataGenerator
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from tensorflow.keras.applications import VGG16
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from tensorflow.keras.layers import Flatten, Dense
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# Define data paths (modify as needed)
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train_data_dir = 'tt'
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validation_data_dir = 'valid'
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test_data_dir = 'valid'
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# Set image dimensions (adjust if necessary)
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img_width, img_height = 224, 224 # VGG16 expects these dimensions
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# Data augmentation for improved generalization (optional)
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train_datagen = ImageDataGenerator(
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rescale=1./255, # Normalize pixel values
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shear_range=0.2,
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zoom_range=0.2,
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horizontal_flip=True,
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fill_mode='nearest'
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)
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validation_datagen = ImageDataGenerator(rescale=1./255) # Only rescale for validation
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# Load training and validation data
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train_generator = train_datagen.flow_from_directory(
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train_data_dir,
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target_size=(img_width, img_height),
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batch_size=32, # Adjust batch size based on GPU memory
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class_mode='binary' # Two classes: cat or dog
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)
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validation_generator = validation_datagen.flow_from_directory(
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validation_data_dir,
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target_size=(img_width, img_height),
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batch_size=32,
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class_mode='binary'
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)
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# Load pre-trained VGG16 model (without the top layers)
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base_model = VGG16(weights='imagenet', include_top=False, input_shape=(img_width, img_height, 3))
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# Freeze the base model layers (optional - experiment with unfreezing for fine-tuning)
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base_model.trainable = False
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# Add custom layers for classification on top of the pre-trained model
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x = base_model.output
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x = Flatten()(x)
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predictions = Dense(1, activation='sigmoid')(x) # Sigmoid for binary classification
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# Create the final model
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model = tf.keras.Model(inputs=base_model.input, outputs=predictions)
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# Compile the model
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model.compile(loss='binary_crossentropy',
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optimizer='adam',
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metrics=['accuracy'])
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# Train the model
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history = model.fit(
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train_generator,
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epochs=3, # Adjust number of epochs based on dataset size and validation performance
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validation_data=validation_generator
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)
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# Evaluate the model on test data (optional)
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test_generator = validation_datagen.flow_from_directory(
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test_data_dir,
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target_size=(img_width, img_height),
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batch_size=32,
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class_mode='binary'
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)
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test_loss, test_acc = model.evaluate(test_generator)
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print('Test accuracy:', test_acc)
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# Save the model for future use (optional)
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model.save('cat_dog_classifier2.keras')
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