dinov3-vits16-pretrain-lvd1689m-coreml-INT8-448x448

DINOv3 VITS16 CoreML INT8

CoreML conversion of facebook/dinov3-vits16-pretrain-lvd1689m optimized for Apple Silicon.

Model Details

• Base Model: facebook/dinov3-vits16-pretrain-lvd1689m
• Framework: CoreML
• Precision: INT8
• Input Size: 448×448
• Model Size: 21.1 MB

Usage

Python (CoreML)

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

# Load model
model = ct.models.MLModel("dinov3_vits16_448x448_int8.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

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: 32.15 FPS
• Latency: 31.10 ± 0.53 ms
• Min Latency: 30.57 ms
• Max Latency: 32.79 ms

Speedup vs PyTorch

• PyTorch: 19.33 FPS
• CoreML: 32.15 FPS
• Speedup: 1.66x faster ⚡

Feature Accuracy

• Cosine Similarity: 0.9847 (vs PyTorch)
• Correlation: 0.9847
• Quality: ⭐⭐⭐ Very Good - Excellent similarity

Model Specifications

• Precision: INT8
• Input Size: 448×448
• Model Size: 21.1 MB

License

This model is released under the DINOv3 License. See LICENSE.md for details.

Citation

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

Reference: DINOv3 Paper

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 for optimized Apple Silicon deployment.

Related Models

• Original PyTorch Model: facebook/dinov3-vits16-pretrain-lvd1689m
• DINOv3 License: https://ai.meta.com/resources/models-and-libraries/dinov3-license/

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Last updated: 2025-10-31