README.md

---
library_name: pytorch
license: other
tags:
- bu_auto
- android
pipeline_tag: image-segmentation

---

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

# SalsaNext: Optimized for Qualcomm Devices

SalsaNext is a LiDAR-based model designed for efficient and accurate semantic segmentation.

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/v0.59.0/src/qai_hub_models/models/salsanext) 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 2.45, ONNX Runtime 1.27.1 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/salsanext/releases/v0.59.0/salsanext-onnx-float.zip)
| ONNX | w8a16 | Universal | QAIRT 2.45, ONNX Runtime 1.27.1 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/salsanext/releases/v0.59.0/salsanext-onnx-w8a16.zip)
| QNN_DLC | float | Universal | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/salsanext/releases/v0.59.0/salsanext-qnn_dlc-float.zip)
| QNN_DLC | w8a16 | Universal | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/salsanext/releases/v0.59.0/salsanext-qnn_dlc-w8a16.zip)
| TFLITE | float | Universal | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/salsanext/releases/v0.59.0/salsanext-tflite-float.zip)

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


### Option 2: Export with Custom Configurations

Use the [Qualcomm® AI Hub Models](https://github.com/qualcomm/ai-hub-models/blob/v0.59.0/src/qai_hub_models/models/salsanext) 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 [SalsaNext on GitHub](https://github.com/qualcomm/ai-hub-models/blob/v0.59.0/src/qai_hub_models/models/salsanext) for usage instructions.

## Model Details

**Model Type:** Model_use_case.semantic_segmentation

**Model Stats:**
- Model checkpoint: SalsaNext
- Input resolution: 1x5x64x2048
- Number of parameters: 6.71M
- Model size (float): 25.7 MB

## Performance Summary
| Model | Runtime | Precision | Chipset | Inference Time (ms) | Peak Memory Range (MB) | Primary Compute Unit
|---|---|---|---|---|---|---
| SalsaNext | ONNX | float | Snapdragon® X2 Elite | 13.861 ms | 35 - 35 MB | NPU
| SalsaNext | ONNX | float | Snapdragon® X Elite | 32.329 ms | 35 - 35 MB | NPU
| SalsaNext | ONNX | float | Snapdragon® 8 Gen 3 Mobile | 25.65 ms | 27 - 359 MB | NPU
| SalsaNext | ONNX | float | Snapdragon® 8 Gen 1 Mobile | 66.054 ms | 3 - 353 MB | NPU
| SalsaNext | ONNX | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 34.496 ms | 20 - 209 MB | NPU
| SalsaNext | ONNX | float | Qualcomm® QCS8450 | 66.054 ms | 3 - 353 MB | NPU
| SalsaNext | ONNX | float | Qualcomm® Dragonwing™ IQ-9075 | 40.685 ms | 22 - 25 MB | NPU
| SalsaNext | ONNX | float | Qualcomm® Dragonwing™ IQ-X7181 | 32.329 ms | 35 - 35 MB | NPU
| SalsaNext | ONNX | float | Qualcomm® Dragonwing™ Q-8750 | 19.089 ms | 23 - 292 MB | NPU
| SalsaNext | ONNX | float | Snapdragon® 8 Elite Mobile | 19.089 ms | 23 - 292 MB | NPU
| SalsaNext | ONNX | float | Snapdragon® 8 Elite Gen 5 Mobile | 13.528 ms | 21 - 316 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® X2 Elite | 15.311 ms | 18 - 18 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® X Elite | 33.542 ms | 18 - 18 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® 8 Gen 3 Mobile | 27.244 ms | 13 - 310 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® 8 Gen 1 Mobile | 43.737 ms | 12 - 400 MB | NPU
| SalsaNext | ONNX | w8a16 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 36.061 ms | 10 - 19 MB | NPU
| SalsaNext | ONNX | w8a16 | Qualcomm® QCS8450 | 43.737 ms | 12 - 400 MB | NPU
| SalsaNext | ONNX | w8a16 | Qualcomm® Dragonwing™ IQ-9075 | 35.521 ms | 14 - 17 MB | NPU
| SalsaNext | ONNX | w8a16 | Qualcomm® Dragonwing™ IQ-X7181 | 33.542 ms | 18 - 18 MB | NPU
| SalsaNext | ONNX | w8a16 | Qualcomm® Dragonwing™ Q-8750 | 22.78 ms | 14 - 239 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® 8 Elite Mobile | 22.78 ms | 14 - 239 MB | NPU
| SalsaNext | ONNX | w8a16 | Snapdragon® 8 Elite Gen 5 Mobile | 17.2 ms | 12 - 245 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® X2 Elite | 13.878 ms | 3 - 3 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® X Elite | 32.065 ms | 3 - 3 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® 8 Gen 3 Mobile | 25.331 ms | 3 - 333 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® 8 Gen 1 Mobile | 65.1 ms | 3 - 346 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® Dragonwing™ QCS8275 | 118.795 ms | 1 - 247 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 33.48 ms | 3 - 5 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® SA8775P | 39.305 ms | 1 - 247 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® SA8650P | 39.305 ms | 1 - 247 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® SA8255P | 39.305 ms | 1 - 247 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® QCS8450 | 65.1 ms | 3 - 346 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® Dragonwing™ IQ-9075 | 39.345 ms | 3 - 17 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® Dragonwing™ IQ-X7181 | 32.065 ms | 3 - 3 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® Dragonwing™ Q-8750 | 18.455 ms | 0 - 264 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® SA7255P | 118.795 ms | 1 - 247 MB | NPU
| SalsaNext | QNN_DLC | float | Qualcomm® SA8295P | 51.659 ms | 0 - 260 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® 8 Elite Mobile | 18.455 ms | 0 - 264 MB | NPU
| SalsaNext | QNN_DLC | float | Snapdragon® 8 Elite Gen 5 Mobile | 13.321 ms | 3 - 293 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® X2 Elite | 18.54 ms | 1 - 1 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® X Elite | 40.713 ms | 1 - 1 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® 8 Gen 3 Mobile | 33.531 ms | 1 - 365 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® 8 Gen 1 Mobile | 70.967 ms | 1 - 419 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® Dragonwing™ QCS8275 | 76.466 ms | 1 - 276 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 40.113 ms | 1 - 3 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® SA8775P | 39.821 ms | 1 - 274 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® SA8650P | 39.821 ms | 1 - 274 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® SA8255P | 39.821 ms | 1 - 274 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® QCS8450 | 70.967 ms | 1 - 419 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® Dragonwing™ IQ-9075 | 40.23 ms | 1 - 9 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® Dragonwing™ IQ-X7181 | 40.713 ms | 1 - 1 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® Dragonwing™ Q-8750 | 27.672 ms | 1 - 297 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® SA7255P | 76.466 ms | 1 - 276 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Qualcomm® SA8295P | 59.105 ms | 1 - 327 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® 8 Elite Mobile | 27.672 ms | 1 - 297 MB | NPU
| SalsaNext | QNN_DLC | w8a16 | Snapdragon® 8 Elite Gen 5 Mobile | 19.759 ms | 1 - 348 MB | NPU
| SalsaNext | TFLITE | float | Snapdragon® 8 Gen 3 Mobile | 25.421 ms | 0 - 333 MB | NPU
| SalsaNext | TFLITE | float | Snapdragon® 8 Gen 1 Mobile | 65.585 ms | 10 - 360 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® Dragonwing™ QCS8275 | 118.682 ms | 10 - 257 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 33.293 ms | 10 - 43 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® SA8775P | 39.275 ms | 10 - 257 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® SA8650P | 39.275 ms | 10 - 257 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® SA8255P | 39.275 ms | 10 - 257 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® QCS8450 | 65.585 ms | 10 - 360 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® Dragonwing™ IQ-9075 | 39.774 ms | 10 - 39 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® Dragonwing™ Q-8750 | 18.69 ms | 9 - 272 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® SA7255P | 118.682 ms | 10 - 257 MB | NPU
| SalsaNext | TFLITE | float | Qualcomm® SA8295P | 51.619 ms | 10 - 271 MB | NPU
| SalsaNext | TFLITE | float | Snapdragon® 8 Elite Mobile | 18.69 ms | 9 - 272 MB | NPU
| SalsaNext | TFLITE | float | Snapdragon® 8 Elite Gen 5 Mobile | 13.335 ms | 10 - 297 MB | NPU

## License
* The license for the original implementation of SalsaNext can be found
  [here](https://github.com/TiagoCortinhal/SalsaNext/blob/master/LICENSE).



## 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).