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Browse files- src/image_classifier_app.py +0 -93
- src/streamlit_app.py +0 -40
src/image_classifier_app.py
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import streamlit as st
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import torch
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import torch.nn as nn
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import torchvision.transforms as transforms
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from PIL import Image
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from torchvision.models import resnet18
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import os
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# Get the directory where the current script (app.py) is located
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# Since app.py is in /app/src/ and the model is in /app/
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BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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MODEL_PATH = os.path.join(BASE_DIR, "resnet18_cifar10_finetuned.pth")
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# Use MODEL_PATH in your load_model function
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# Example: model.load_state_dict(torch.load(MODEL_PATH, map_location=device))
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# ---------------- Constants ----------------
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CIFAR10_CLASSES = ['airplane', 'automobile', 'bird', 'cat', 'deer', 'dog', 'frog', 'horse', 'ship', 'truck']
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# ---------------- Model Loader ----------------
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@st.cache_resource
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def load_model():
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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model = resnet18(pretrained=False)
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model.conv1 = nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False)
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model.maxpool = nn.Identity()
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in_ftrs = model.fc.in_features
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model.fc = nn.Sequential(
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nn.Linear(in_ftrs, in_ftrs),
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nn.ReLU(),
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nn.Dropout(p=0.5),
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nn.Linear(in_ftrs, 10)
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)
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model.load_state_dict(torch.load(MODEL_PATH, map_location=device))
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model.to(device)
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model.eval()
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return model, device
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# ---------------- Preprocessing ----------------
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def preprocess_image(image):
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transform = transforms.Compose([
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transforms.Resize((32, 32)),
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transforms.ToTensor(),
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transforms.Normalize(mean=[0.4914, 0.4822, 0.4465],
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std=[0.2023, 0.1994, 0.2010])
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])
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return transform(image).unsqueeze(0)
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# ---------------- UI ----------------
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st.title("🎯 CIFAR-10 Image Classifier")
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st.write("Upload an image to classify it.")
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st.write("ResNet18 model finetuned for 3 epochs with 95.6% accuracy on CIFAR10 images.")
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st.write("The model performs well on images from CIFAR10 dataset.")
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uploaded_file = st.file_uploader("Choose an image...", type=["jpg", "jpeg", "png"])
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if uploaded_file:
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try:
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image = Image.open(uploaded_file).convert('RGB')
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st.image(image, caption="Uploaded Image", width=200)
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model, device = load_model()
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with st.spinner("Classifying..."):
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tensor = preprocess_image(image).to(device)
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with torch.no_grad():
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outputs = model(tensor)
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probabilities = torch.softmax(outputs, dim=1)
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confidence, predicted = torch.max(probabilities, 1)
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st.success(f"Predicted: {CIFAR10_CLASSES[predicted.item()]}")
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st.info(f"Confidence: {confidence.item()*100:.2f}%")
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except Exception as e:
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import traceback
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st.error("An error occurred:")
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st.text(traceback.format_exc())
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top5_probs, top5_indices = torch.topk(probabilities, 5)
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st.subheader("Top 5 Predictions")
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for i in range(5):
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label = CIFAR10_CLASSES[top5_indices[0][i].item()]
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prob = top5_probs[0][i].item() * 100
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st.write(f"{i+1}. {label} – {prob:.2f}%")
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st.write("Done.")
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src/streamlit_app.py
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import altair as alt
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import numpy as np
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import pandas as pd
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import streamlit as st
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"""
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# Welcome to Streamlit!
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Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
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If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
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forums](https://discuss.streamlit.io).
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In the meantime, below is an example of what you can do with just a few lines of code:
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"""
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num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
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num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
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indices = np.linspace(0, 1, num_points)
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theta = 2 * np.pi * num_turns * indices
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radius = indices
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x = radius * np.cos(theta)
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y = radius * np.sin(theta)
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df = pd.DataFrame({
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"x": x,
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"y": y,
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"idx": indices,
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"rand": np.random.randn(num_points),
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})
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st.altair_chart(alt.Chart(df, height=700, width=700)
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.mark_point(filled=True)
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.encode(
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x=alt.X("x", axis=None),
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y=alt.Y("y", axis=None),
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color=alt.Color("idx", legend=None, scale=alt.Scale()),
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size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
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))
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