🧠 Brain Tumor MRI Classification Model (โมเดล AI ตรวจวิเคราะห์และแยกแยะประเภทเนื้องอกในสมองจากภาพสแกน MRI)

This Artificial Intelligence (AI) model is fine-tuned to analyze brain MRI scans and classify them into 4 distinct categories:

Glioma Tumor (เนื้องอกในสมองชนิดกลิโอมา)— A type of tumor that occurs in the brain and spinal cord.
Meningioma Tumor (เนื้องอกเยื่อหุ้มสมอง) — A tumor that arises from the meninges (membranes surrounding the brain).
Pituitary Tumor (เนื้องอกต่อมใต้สมอง) — An abnormal growth that develops in the pituitary gland.
No Tumor (สมองปกติ ไม่พบเนื้องอก) — Healthy brain scan with no detected tumors.

💡 In Short: An AI-powered image classification model designed to assist in detecting and identifying brain tumor types from MRI scans.

📋 Model Overview

Base Architecture: EfficientNetB0 (Pre-trained on ImageNet)
Task: Multi-class Image Classification (4 Classes)
Input Image Size: 224 x 224 x 3
Framework: TensorFlow 2.x / Keras

🏷️ Target Classes

Glioma Tumor
Meningioma Tumor
No Tumor
Pituitary Tumor

🛠️ 1. Prerequisites & Installation

Before using, you need to install the required basic libraries using this command in your Terminal or Command Prompt: ก่อนเริ่มใช้งาน คุณจำเป็นต้องติดตั้งไลบรารีพื้นฐาน

pip install tensorflow pillow requests numpy

import os
import urllib.request
import numpy as np
import tensorflow as tf
from PIL import Image
from tensorflow.keras.applications import EfficientNetB0
from tensorflow.keras.layers import Dense, GlobalAveragePooling2D, Dropout, BatchNormalization
from tensorflow.keras.models import Model


model_url = "[https://huggingface.co/starpreeda/BrainTumorTest/resolve/main/efficientnetb0_finetuned_brain_mri.keras](https://huggingface.co/starpreeda/BrainTumorTest/resolve/main/efficientnetb0_finetuned_brain_mri.keras)"
weights_path = "model_weights.keras"

if not os.path.exists(weights_path):
    print("Downloading model weights...")
    urllib.request.urlretrieve(model_url, weights_path)
    print("Download completed!")
base_model = EfficientNetB0(weights=None, include_top=False, input_shape=(224, 224, 3))
x = base_model.output
x = GlobalAveragePooling2D()(x)
x = BatchNormalization()(x)
x = Dense(256, activation='relu')(x)
x = Dropout(0.4)(x)
outputs = Dense(4, activation='softmax')(x)

model = Model(inputs=base_model.input, outputs=outputs)

model.load_weights(weights_path)
print("✅ Model is ready to use!")
class_names = ['Glioma', 'Meningioma', 'No Tumor', 'Pituitary']

def predict_mri(image_path):
    img = Image.open(image_path).convert('RGB')
    img = img.resize((224, 224))
    img_array = np.array(img, dtype=np.float32)
    img_array = np.expand_dims(img_array, axis=0)  
    
    predictions = model.predict(img_array)
    predicted_class = class_names[np.argmax(predictions[0])]
    confidence = np.max(predictions[0]) * 100
    
    return predicted_class, confidence

# class_label, conf = predict_mri("path/to/your/mri_scan.jpg")
# print(f"Result: {class_label} ({conf:.2f}%)")

## ⚙️ Training Details & Hyperparameters

- **Optimizer:** Adam (Learning Rate = `1e-4`)
- **Loss Function:** Categorical Crossentropy
- **Batch Size:** 16
- **Data Augmentation:**
  - Rotation Range: 15°
  - Width & Height Shift: 10%
  - Zoom Range: 15%
  - Horizontal Flip: True
- **Fine-Tuning Strategy:** Unfroze top 40 layers of EfficientNetB0 for fine-tuning.

## 📊 Model Architecture Summary

```text
Input (224, 224, 3) 
  ↳ EfficientNetB0 Base (Top 40 layers unfrozen)
  ↳ GlobalAveragePooling2D
  ↳ BatchNormalization
  ↳ Dense(256, activation='relu')
  ↳ Dropout(0.4)
  ↳ Dense(4, activation='softmax')
---

🚀 How to Load and Use

import os
import urllib.request
import numpy as np
import tensorflow as tf
from PIL import Image
from tensorflow.keras.applications import EfficientNetB0
from tensorflow.keras.layers import Dense, GlobalAveragePooling2D, Dropout, BatchNormalization
from tensorflow.keras.models import Model

model_url = "[https://huggingface.co/starpreeda/BrainTumorTest/resolve/main/efficientnetb0_finetuned_brain_mri.keras](https://huggingface.co/starpreeda/BrainTumorTest/resolve/main/efficientnetb0_finetuned_brain_mri.keras)"
weights_path = "model_weights.keras"

if not os.path.exists(weights_path):
    print("Downloading model weights...")
    urllib.request.urlretrieve(model_url, weights_path)
    print("Download completed!")

base_model = EfficientNetB0(weights=None, include_top=False, input_shape=(224, 224, 3))
x = base_model.output
x = GlobalAveragePooling2D()(x)
x = BatchNormalization()(x)
x = Dense(256, activation='relu')(x)
x = Dropout(0.4)(x)
outputs = Dense(4, activation='softmax')(x)

model = Model(inputs=base_model.input, outputs=outputs)
model.load_weights(weights_path)
print("Model is ready for use!")

📊 Dataset & Training Data

Source: Brain Tumor MRI Dataset (Kaggle)
Data Distribution:
    Training Set: MRI images augmented with rotation, shift, zoom, and horizontal flips.
    Testing Set: Independent brain MRI scans for evaluation.
    Classes: 4 categories (Glioma, Meningioma, No Tumor, Pituitary).