README.md

---
library_name: pytorch
license: mit
tags:
- backbone
- real_time
- android
pipeline_tag: video-object-tracking

---

![](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/web-assets/model_demo.png)

# OSNet: Optimized for Qualcomm Devices

OSNet is a compact convolutional architecture for person re-identification. It extracts discriminative embeddings that can be compared with cosine similarity for person matching across camera views.

This is based on the implementation of OSNet found [here](https://github.com/KaiyangZhou/deep-person-reid).
This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the [Qualcomm® AI Hub Models](https://github.com/qualcomm/ai-hub-models/blob/v0.63.0/src/qai_hub_models/models/osnet) library to export with custom configurations. More details on model performance across various devices, can be found [here](#performance-summary).

Qualcomm AI Hub Models uses [Qualcomm AI Hub Workbench](https://workbench.aihub.qualcomm.com) to compile, profile, and evaluate this model. [Sign up](https://myaccount.qualcomm.com/signup) to run these models on a hosted Qualcomm® device.

## Getting Started
There are two ways to deploy this model on your device:

### Option 1: Download Pre-Exported Models

Below are pre-exported model assets ready for deployment.

| Runtime | Precision | Chipset | SDK Versions | Download |
|---|---|---|---|---|
| ONNX | float | Universal | QAIRT 2.50, ONNX Runtime 1.27.1 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-onnx-float.zip)
| ONNX | w8a8 | Universal | QAIRT 2.50, ONNX Runtime 1.27.1 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-onnx-w8a8.zip)
| QNN_DLC | float | Universal | QAIRT 2.50 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-qnn_dlc-float.zip)
| QNN_DLC | w8a8 | Universal | QAIRT 2.50 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-qnn_dlc-w8a8.zip)
| TFLITE | float | Universal | QAIRT 2.50 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-tflite-float.zip)
| TFLITE | w8a8 | Universal | QAIRT 2.50 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/osnet/releases/v0.63.0/osnet-tflite-w8a8.zip)

For more device-specific assets and performance metrics, visit **[OSNet on Qualcomm® AI Hub](https://aihub.qualcomm.com/models/osnet)**.


### Option 2: Export with Custom Configurations

Use the [Qualcomm® AI Hub Models](https://github.com/qualcomm/ai-hub-models/blob/v0.63.0/src/qai_hub_models/models/osnet) Python library to compile and export the model with your own:
- Custom weights (e.g., fine-tuned checkpoints)
- Custom input shapes
- Target device and runtime configurations

This option is ideal if you need to customize the model beyond the default configuration provided here.

See our repository for [OSNet on GitHub](https://github.com/qualcomm/ai-hub-models/blob/v0.63.0/src/qai_hub_models/models/osnet) for usage instructions.

## Model Details

**Model Type:** Model_use_case.video_object_tracking

**Model Stats:**
- Input resolution: 256x128
- Model checkpoint: osnet_x1_0_market_256x128_amsgrad_ep150_stp60_lr0.0015_b64_fb10_softmax_labelsmooth_flip.pth
- Model size (float): 8.69 MB
- Model size (w8a8): 3.57 MB
- Number of parameters: 2.68M

## Performance Summary
| Model | Runtime | Precision | Chipset | Inference Time (ms) | Peak Memory Range (MB) | Primary Compute Unit
|---|---|---|---|---|---|---
| OSNet | ONNX | float | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.459 ms | 0 - 56 MB | NPU
| OSNet | ONNX | float | Snapdragon® 8 Elite For Galaxy Mobile | 0.487 ms | 0 - 54 MB | NPU
| OSNet | ONNX | float | Snapdragon® X2 Elite | 0.497 ms | 1 - 1 MB | NPU
| OSNet | ONNX | float | Snapdragon® X Elite | 0.931 ms | 0 - 0 MB | NPU
| OSNet | ONNX | float | Snapdragon® 8 Gen 3 Mobile | 0.607 ms | 0 - 71 MB | NPU
| OSNet | ONNX | float | Snapdragon® 8 Gen 1 Mobile | 1.57 ms | 0 - 71 MB | NPU
| OSNet | ONNX | float | Qualcomm® Dragonwing™ IQ-8275 | 1.404 ms | 0 - 4 MB | NPU
| OSNet | ONNX | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.899 ms | 0 - 54 MB | NPU
| OSNet | ONNX | float | Qualcomm® QCS8450 | 1.57 ms | 0 - 71 MB | NPU
| OSNet | ONNX | float | Qualcomm® Dragonwing™ IQ-9075 | 1.394 ms | 0 - 4 MB | NPU
| OSNet | ONNX | float | Qualcomm® Dragonwing™ IQ-X7181 | 0.931 ms | 0 - 0 MB | NPU
| OSNet | ONNX | float | Qualcomm® Dragonwing™ Q-8750 | 0.487 ms | 0 - 54 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.281 ms | 0 - 64 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® 8 Elite For Galaxy Mobile | 0.326 ms | 0 - 61 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® X2 Elite | 0.27 ms | 1 - 1 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® X Elite | 0.548 ms | 0 - 0 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® 8 Gen 3 Mobile | 0.386 ms | 0 - 77 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® 8 Gen 1 Mobile | 0.68 ms | 0 - 80 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ QCS6490 | 1.446 ms | 0 - 3 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ IQ-8275 | 0.633 ms | 0 - 4 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.548 ms | 0 - 5 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® QCS8450 | 0.68 ms | 0 - 80 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ IQ-9075 | 0.683 ms | 0 - 3 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ IQ-X7181 | 0.548 ms | 0 - 0 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ Q-6690 | 2.875 ms | 0 - 66 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ Q-7790 | 0.586 ms | 0 - 63 MB | NPU
| OSNet | ONNX | w8a8 | Qualcomm® Dragonwing™ Q-8750 | 0.326 ms | 0 - 61 MB | NPU
| OSNet | ONNX | w8a8 | Snapdragon® 7 Gen 4 Mobile | 0.586 ms | 0 - 63 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.433 ms | 0 - 51 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® 8 Elite For Galaxy Mobile | 0.529 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® X2 Elite | 0.633 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® X Elite | 1.237 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® 8 Gen 3 Mobile | 0.694 ms | 0 - 62 MB | NPU
| OSNet | QNN_DLC | float | Snapdragon® 8 Gen 1 Mobile | 1.978 ms | 0 - 65 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® Dragonwing™ IQ-8275 | 1.438 ms | 0 - 4 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 1.046 ms | 0 - 2 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® SA8775P | 1.632 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® SA8650P | 1.632 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® SA8255P | 1.632 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® QCS8450 | 1.978 ms | 0 - 65 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® Dragonwing™ IQ-9075 | 1.503 ms | 2 - 5 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® Dragonwing™ IQ-X7181 | 1.237 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® Dragonwing™ Q-8750 | 0.529 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® SA7255P | 4.523 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | float | Qualcomm® SA8295P | 2.073 ms | 0 - 43 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.225 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® 8 Elite For Galaxy Mobile | 0.271 ms | 0 - 46 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® X2 Elite | 0.328 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® X Elite | 0.654 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® 8 Gen 3 Mobile | 0.366 ms | 0 - 61 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® 8 Gen 1 Mobile | 0.684 ms | 0 - 65 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ QCS6490 | 1.438 ms | 0 - 2 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ IQ-8275 | 0.534 ms | 0 - 3 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.524 ms | 0 - 2 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® SA8775P | 0.725 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® SA8650P | 0.725 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® SA8255P | 0.725 ms | 0 - 52 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® QCS8450 | 0.684 ms | 0 - 65 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ IQ-9075 | 0.618 ms | 0 - 2 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ IQ-X7181 | 0.654 ms | 0 - 0 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ Q-6690 | 2.858 ms | 0 - 47 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ Q-7790 | 0.534 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® Dragonwing™ Q-8750 | 0.271 ms | 0 - 46 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® SA7255P | 1.223 ms | 0 - 48 MB | NPU
| OSNet | QNN_DLC | w8a8 | Qualcomm® SA8295P | 0.851 ms | 0 - 47 MB | NPU
| OSNet | QNN_DLC | w8a8 | Snapdragon® 7 Gen 4 Mobile | 0.534 ms | 0 - 48 MB | NPU
| OSNet | TFLITE | float | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.438 ms | 0 - 49 MB | NPU
| OSNet | TFLITE | float | Snapdragon® 8 Elite For Galaxy Mobile | 0.532 ms | 0 - 48 MB | NPU
| OSNet | TFLITE | float | Snapdragon® 8 Gen 3 Mobile | 0.697 ms | 0 - 63 MB | NPU
| OSNet | TFLITE | float | Snapdragon® 8 Gen 1 Mobile | 1.972 ms | 0 - 66 MB | NPU
| OSNet | TFLITE | float | Qualcomm® Dragonwing™ IQ-8275 | 1.473 ms | 0 - 8 MB | NPU
| OSNet | TFLITE | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 1.095 ms | 0 - 3 MB | NPU
| OSNet | TFLITE | float | Qualcomm® QCS8450 | 1.972 ms | 0 - 66 MB | NPU
| OSNet | TFLITE | float | Qualcomm® Dragonwing™ IQ-9075 | 1.542 ms | 0 - 8 MB | NPU
| OSNet | TFLITE | float | Qualcomm® Dragonwing™ Q-8750 | 0.532 ms | 0 - 48 MB | NPU
| OSNet | TFLITE | float | Qualcomm® SA7255P | 13.319 ms | 0 - 23 MB | GPU
| OSNet | TFLITE | float | Qualcomm® SA8295P | 2.114 ms | 0 - 42 MB | NPU
| OSNet | TFLITE | w8a8 | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 0.208 ms | 0 - 46 MB | NPU
| OSNet | TFLITE | w8a8 | Snapdragon® 8 Elite For Galaxy Mobile | 0.248 ms | 0 - 43 MB | NPU
| OSNet | TFLITE | w8a8 | Snapdragon® 8 Gen 3 Mobile | 0.307 ms | 0 - 57 MB | NPU
| OSNet | TFLITE | w8a8 | Snapdragon® 8 Gen 1 Mobile | 0.583 ms | 0 - 63 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ QCS6490 | 2.243 ms | 0 - 12 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ IQ-8275 | 0.475 ms | 0 - 6 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.438 ms | 0 - 2 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® QCS8450 | 0.583 ms | 0 - 63 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ IQ-9075 | 0.56 ms | 0 - 5 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ Q-6690 | 3.696 ms | 0 - 44 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ Q-7790 | 1.026 ms | 0 - 46 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® Dragonwing™ Q-8750 | 0.248 ms | 0 - 43 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® SA7255P | 1.085 ms | 0 - 45 MB | NPU
| OSNet | TFLITE | w8a8 | Qualcomm® SA8295P | 0.806 ms | 0 - 44 MB | NPU
| OSNet | TFLITE | w8a8 | Snapdragon® 7 Gen 4 Mobile | 1.026 ms | 0 - 46 MB | NPU

## License
* The license for the original implementation of OSNet can be found
  [here](https://github.com/KaiyangZhou/deep-person-reid/blob/master/LICENSE).

## References
* [Omni-Scale Feature Learning for Person Re-Identification](https://arxiv.org/abs/1905.00953)
* [Source Model Implementation](https://github.com/KaiyangZhou/deep-person-reid)

## Community
* Join [our AI Hub Slack community](https://aihub.qualcomm.com/community/slack) to collaborate, post questions and learn more about on-device AI.
* For questions or feedback please [reach out to us](mailto:ai-hub-support@qti.qualcomm.com).