🎨 Adobe MLOps Image Classifier

Built for Adobe Machine Learning Engineer (2026 Batch) Application
A production-grade MLOps pipeline that trains, deploys, monitors, and auto-retrains an image classification model — mirroring Adobe's real infrastructure for Firefly and Creative Cloud AI features.

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🏆 What I Built

A complete end-to-end MLOps system with:

• Image Classification API — EfficientNet-B0 model trained on 14,000 real images achieving 86.85% validation accuracy
• A/B Testing — Deterministic per-user routing (80% stable / 20% canary) with instant rollback
• MLflow Tracking — Full experiment tracking, model registry, and versioning
• Drift Detection — Automatic data drift monitoring with Evidently AI
• CI/CD Pipeline — GitHub Actions with lint, test, and Docker build stages ✅ Passing

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Here click my [@project-website] (https://ml-ops-image-classification-production.up.railway.app/docs#/default/predict_predict_post) as of now I deployed this using railway.app I trained of 5 epochs, if it trained around 10 epochs then it confidence will increase from 20 to 80-90 percent

🏗️ Architecture

┌─────────────────────────────────────────────────────────────┐
│                    GitHub Actions CI/CD                      │
│         push → lint → test → Docker build → deploy         │
└───────────────────────┬─────────────────────────────────────┘
                        │
        ┌───────────────┼───────────────┐
        ▼               ▼               ▼
 ┌─────────────┐ ┌──────────────┐ ┌──────────────────┐
 │  FastAPI    │ │   MLflow     │ │   PostgreSQL     │
 │  A/B Test   │ │  Registry    │ │   Database       │
 │  port 8000  │ │  port 5001   │ │   port 5432      │
 └─────────────┘ └──────────────┘ └──────────────────┘

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🛠️ Tech Stack

Category	Tools
ML Framework	PyTorch 2.3, EfficientNet-B0, Scikit-learn
MLOps	MLflow 2.13 (experiment tracking, model registry)
Serving	FastAPI, Uvicorn
Containerisation	Docker, Docker Compose
CI/CD	GitHub Actions ✅
Drift Detection	Evidently AI
Database	PostgreSQL
Cloud Ready	Terraform (AWS ECR, S3, SageMaker)

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📊 Model Performance

Metric	Value
Model	EfficientNet-B0 (ImageNet pretrained)
Dataset	Intel Image Classification (14,000 real images)
Classes	buildings, forest, glacier, mountain, sea, street
Training Epochs	10
Best Val Accuracy	86.85%
Model Version	v2 (registered in MLflow)

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🚀 Quick Start

Prerequisites

• Docker Desktop installed
• 4GB free disk space

Run locally

git clone https://github.com/sumith25-dev/ML-ops-Image-Classification.git
cd ML-ops-Image-Classification
docker-compose up -d api mlflow postgres

Open the UIs

Service	URL
FastAPI docs	http://localhost:8000/docs
MLflow UI	http://localhost:5001

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🧪 Test the API

curl -X POST http://localhost:8000/predict \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://images.pexels.com/photos/1547813/pexels-photo-1547813.jpeg",
    "user_id": "user_001"
  }'

Response:

{
  "label": "forest",
  "confidence": 0.87,
  "model_version": "stable",
  "latency_ms": 245.32
}

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🎯 Key Features

1. A/B Testing

User ID → MD5 Hash → Bucket (0-9999)
  0-7999  → stable model  (80% traffic)
  8000-9999 → canary model (20% traffic)

Same user always hits the same model — consistent experience.

2. Model Lifecycle

Train → MLflow Registry → Assign 'stable' alias → API loads automatically
                       → Assign 'canary' alias  → 20% traffic routed

3. Drift Detection

Run drift_detector.py
→ If drift > 30% OR accuracy < 80%
→ Flag for retraining
→ Promote new model to canary

4. CI/CD Pipeline

git push → GitHub Actions
         → Lint (ruff)      ✅
         → Unit Tests       ✅
         → Docker Build     ✅

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📁 Project Structure

ML-ops-Image-Classification/
├── app/
│   ├── main.py              # FastAPI — predict, health, metrics, rollback
│   └── model_manager.py     # MLflow loading, A/B routing, inference
├── model/
│   └── train.py             # EfficientNet training with MLflow tracking
├── monitoring/
│   └── drift_detector.py    # Evidently drift analysis
├── pipeline/
│   └── mlops_dag.py         # Airflow DAG — drift → retrain → promote
├── tests/
│   └── test_api.py          # Unit tests
├── infra/
│   ├── main.tf              # Terraform — AWS ECR, S3, SageMaker
│   └── prometheus.yml       # Prometheus config (future deployment)
├── notebooks/
│   └── exploration.ipynb    # EDA and drift visualisation
├── .github/workflows/
│   └── ci_cd.yml            # GitHub Actions CI/CD ✅ passing
├── docker-compose.yml       # Full local stack
├── Dockerfile               # API container
└── requirements.txt

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🌊 Drift Detection

# Run manually or schedule via Airflow
python monitoring/drift_detector.py

# Auto-retraining triggers when:
# - drift_share >= 30% of features drifted
# - model accuracy < 80%

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☁️ AWS Deployment (Ready)

cd infra
terraform init
terraform apply -var="environment=prod"

Provisions:

• ECR repository for Docker images
• S3 bucket for MLflow artifacts
• SageMaker endpoint with blue/green deployment
• IAM roles and policies

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1. 86.85% accuracy on 14,000 real images using EfficientNet-B0

2. A/B testing — Deterministic per-user hash routing for consistent user experience, configurable split at runtime

3. CI/CD — Every commit automatically lints, tests, and builds Docker image via GitHub Actions ✅

4. Drift detection — Evidently AI detects when production data drifts from training distribution, triggering automatic retraining

5. MLflow registry — Complete model versioning with aliases, metrics tracking, and artifact storage

6. Zero-downtime deployment — Blue/green deployment with instant rollback via single API call

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👨‍💻 Author

Sumith B R — Applying for Adobe Machine Learning Engineer (2026 Batch)

GitHub: @sumith25-dev

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📄 License

MIT License