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README.md
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### **🩺 ResNet-18 Cataract Detection System**
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This repository hosts a quantized version of **ResNet-18-based** model optimized for **cataract detection** having two labels either normal or cataract. The model detects images into these 2 labels.
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---
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## **📌 Model Details**
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- **Model Architecture**: ResNet-18
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- **Task**: Cataract Detection System
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- **Dataset**: Cataract Dataset ([Kaggle](https://www.kaggle.com/datasets/nandanp6/cataract-image-dataset))
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- **Framework**: PyTorch
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- **Input Image Size**: 224x224
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- **Number of Classes**: 2
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---
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## **🚀 Usage**
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### **Installation**
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```bash
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pip install torch torchvision pillow
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```
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### **Loading the Model**
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```python
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import torch
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import torchvision.models as models
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from huggingface_hub import hf_hub_download
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import json
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from PIL import Image
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import torchvision.transforms as transforms
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device = "cuda" if torch.cuda.is_available() else "cpu"
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weights_path = hf_hub_download(repo_id="AventIQ-AI/resnet18-cataract-detection-system", filename="cataract_detection_resnet18_quantized.pth")
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labels_path = hf_hub_download(repo_id="AventIQ-AI/resnet18-cataract-detection-system", filename="class_names.json")
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with open(labels_path, "r") as f:
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class_labels = json.load(f)
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model = models.resnet18(pretrained=False)
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num_classes = len(class_labels)
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model.fc = torch.nn.Linear(in_features=512, out_features=num_classes)
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model.load_state_dict(torch.load(weights_path, map_location=torch.device('cpu')))
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model.eval()
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print("Model loaded successfully!")
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```
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---
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### **🔍 Perform Classification**
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```python
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transform = transforms.Compose([
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transforms.Resize((224, 224)),
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transforms.ToTensor(),
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transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
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])
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def predict_image(image_path):
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image = Image.open(image_path).convert("RGB")
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image = transform(image).unsqueeze(0).to(device) # Add batch dimension
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with torch.no_grad():
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outputs = model(image)
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_, predicted_class = torch.max(outputs, 1)
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predicted_label = class_labels[predicted_class.item()]
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print(f"Predicted Class: {predicted_label}")
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# Example usage:
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image_path = "your_image_path"
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predict_image(image_path)
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```
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## **📊 Evaluation Results**
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After fine-tuning, the model was evaluated on the **Chest X-ray Pneumonia Dataset**, achieving the following performance:
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| **Metric** | **Score** |
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|------------------|----------|
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| **Accuracy** | 97.52% |
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| **Precision** | 98.31% |
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| **Recall** | 96.67% |
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| **F1-Score** | 97.48% |
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---
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## **🔧 Fine-Tuning Details**
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### **Dataset**
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The model was trained on **Cataract Dataset** having two labels.
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### **Training Configuration**
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- **Number of epochs**: 10
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- **Batch size**: 32
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- **Optimizer**: Adam
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- **Learning rate**: 1e-4
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- **Loss Function**: Cross-Entropy
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- **Evaluation Strategy**: Validation at each epoch
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---
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## **⚠️ Limitations**
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- **Misclassification risk**: The model may produce **false positives or false negatives**. Always verify results with a radiologist.
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- **Dataset bias**: Performance may be affected by **dataset distribution**. It may not generalize well to **different populations**.
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- **Black-box nature**: Like all deep learning models, it does not explain why a prediction was made.
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---
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