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import os
from pathlib import Path
import random
import torch
from model import create_effnetb2
import gradio as gr
from typing import Dict, Tuple
from time import time
effnetb2, effnetb2_transforms = create_effnetb2(101)
effnetb2.load_state_dict(torch.load(f='effnetB2_101.pth', map_location=torch.device('cpu')))
with open('class_names.txt', 'r') as f:
class_names = [food.strip() for food in f.readlines()]
def predict(image) -> Tuple[Dict, float]:
start = time()
transformed_image = effnetb2_transforms(image).unsqueeze(0)
effnetb2.eval()
with torch.inference_mode():
y_logits = effnetb2(transformed_image)
probs = torch.softmax(y_logits, dim=1).squeeze()
pred_labels_and_probs = {class_names[i]: float(probs[i].item()) for i in range(len(class_names))}
end = time()
return pred_labels_and_probs, round(end - start, 5)
images = os.listdir('examples')
example_list = [[str('examples/' + x)] for x in images]
# Create title, description and article strings
title = "FoodVision"
description = "An EfficientNetB2 feature extractor computer vision model to classify images of food."
# Create the Gradio demo
demo = gr.Interface(fn=predict, # mapping function from input to output
inputs=gr.Image(type="pil"), # what are the inputs?
outputs=[gr.Label(num_top_classes=5, label="Predictions"), # what are the outputs?
gr.Number(label="Prediction time (s)")], # our fn has two outputs, therefore we have two outputs
examples=example_list,
title=title,
description=description)
# Launch the demo!
demo.launch(debug=False)
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