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app.py
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# Import necessary libraries
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import gradio as gr # Gradio for creating web interfaces
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from fastai.vision.all import * # FastAI library for deep learning tasks
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# Define a custom transformation class for converting images to grayscale
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class GrayscaleTransform(Transform):
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"""
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Custom transformation class to convert images to grayscale.
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This is used to ensure that the input images match the format
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used during model training.
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"""
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def encodes(self, img: PILImage):
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"""
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Convert the input image to grayscale.
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Args:
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img (PILImage): The input image in PIL format.
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Returns:
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PIL.Image: The grayscale version of the input image.
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"""
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return img.convert("L") # 'L' mode represents grayscale images
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# Load the pre-trained model
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learn = load_learner('clocker.pkl')
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"""
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load_learner function loads a saved FastAI learner object.
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The 'clocker.pkl' file contains the trained model, including
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its architecture, weights, and any necessary preprocessing steps.
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"""
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def classify_image(img):
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"""
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Classify the input image using the loaded model.
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Args:
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img: The input image to be classified.
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Returns:
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dict: A dictionary containing the prediction probabilities for each class.
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"""
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# Make a prediction using the loaded model
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pred, _, probs = learn.predict(img)
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# Return a dictionary with class probabilities
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return {
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"average woman": float(probs[0]), # Probability for "average woman" class
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"transgender woman": float(probs[1]) # Probability for "transgender woman" class
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}
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# Create the Gradio interface
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iface = gr.Interface(
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fn=classify_image, # The function to be called when the interface is used
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inputs=gr.Image(), # Input component: an image upload widget
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outputs=gr.Label(num_top_classes=2), # Output component: label with top 2 classes
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title="Transfem Clocker AI", # Title of the web interface
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description="Upload an image of a woman and this will guess if she is trans.", # Description of the interface
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)
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"""
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gr.Interface creates a web interface for the model:
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- fn: The function to be called when an image is uploaded
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- inputs: Specifies that the input should be an image
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- outputs: Displays the top 2 class probabilities as labels
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- title and description: Provides context for users
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"""
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# Launches the interface
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iface.launch()
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"""
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This starts the Gradio interface, making it accessible via a web browser.
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it is my first ever AI web app!
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"""
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