README.md

---
library_name: coreml
tags:
  - vision
  - feature-extraction
  - dinov3
  - coreml
  - apple-silicon
  - fp32
pipeline_tag: feature-extraction
---

# DINOv3 VITB16 CoreML FP32

CoreML conversion of [facebook/dinov3-vitb16-pretrain-lvd1689m](https://huggingface.co/facebook/dinov3-vitb16-pretrain-lvd1689m) optimized for Apple Silicon.

## Model Details

- **Base Model**: facebook/dinov3-vitb16-pretrain-lvd1689m
- **Framework**: CoreML
- **Precision**: FP32
- **Input Size**: 448×448
- **Model Size**: 327.3 MB

## Usage

### Python (CoreML)

```python
import coremltools as ct
import numpy as np
from PIL import Image

# Load model
model = ct.models.MLModel("dinov3_vitb16_448x448_fp32.mlpackage")

# Prepare image
image = Image.open("image.jpg").resize((448, 448))

# Extract features
output = model.predict({"image": image})
features = output["features"]  # Shape: [1, embed_dim, grid_size, grid_size]
```

### Swift/iOS

```swift
import CoreML

// Load model
guard let model = try? MLModel(contentsOf: modelURL) else {
    fatalError("Failed to load model")
}

// Prepare image
guard let image = UIImage(named: "image.jpg") else {
    fatalError("Failed to load image")
}

// Extract features
let input = try MLFeatureValue(image: image.cgImage!)
let output = try model.prediction(from: [input])
let features = output.featureValue(for: "features")?.multiArrayValue
```

## Performance

Performance metrics on Apple Silicon:

### CoreML Performance

- **Throughput**: 10.92 FPS
- **Latency**: 91.55 ± 2.77 ms
- **Min Latency**: 84.81 ms
- **Max Latency**: 96.56 ms

### Speedup vs PyTorch

- **PyTorch**: 7.65 FPS
- **CoreML**: 10.92 FPS
- **Speedup**: 1.43x faster ⚡

### Feature Accuracy

- **Cosine Similarity**: 0.9846 (vs PyTorch)
- **Correlation**: 0.9846
- **Quality**: ⭐⭐⭐ Very Good - Excellent similarity

### Model Specifications

- **Precision**: FP32
- **Input Size**: 448×448
- **Model Size**: 327.3 MB


## License

This model is released under the DINOv3 License. See [LICENSE.md](LICENSE.md) for details.

## Citation

```bibtex
@article{dinov3,
  title={DINOv3: A Versatile Vision Foundation Model},
  author={Meta AI Research},
  journal={arXiv preprint arXiv:2508.10104},
  year={2025}
}
```

**Reference**: [DINOv3 Paper](https://arxiv.org/pdf/2508.10104)

Key contributions:
- **Gram anchoring** strategy for high-quality dense feature maps
- Self-supervised learning on 1.689B images
- Superior performance on dense vision tasks
- Versatile across tasks and domains without fine-tuning

## Demo Images

### Input Image
<div align="center">
  <img src="demo_image.png" alt="Demo Input Image" width="500"/>
</div>
*Sample input image for feature extraction demonstration*

### Feature Visualization
<div align="center">
  <img src="dinov3_feature_comparison.png" alt="Feature Comparison Visualization" width="800"/>
</div>

The visualization shows:
- **PCA projection** of high-dimensional features (RGB visualization)
- **Feature channel activations** showing spatial patterns
- **Gram matrix analysis** for object similarity detection
- **Side-by-side comparison** with PyTorch reference implementation

This comprehensive visualization demonstrates that CoreML conversion preserves the semantic structure and feature quality of the original DINOv3 model.

## Powered By DINOv3

🌟 **This model is powered by DINOv3** 🌟

Converted by [Aegis AI](https://github.com/Aegis-AI/Aegis-AI) for optimized Apple Silicon deployment.

## Related Models

- Original PyTorch Model: [facebook/dinov3-vitb16-pretrain-lvd1689m](https://huggingface.co/facebook/dinov3-vitb16-pretrain-lvd1689m)
- DINOv3 License: https://ai.meta.com/resources/models-and-libraries/dinov3-license/

---
*Last updated: 2025-11-03*