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FFNet-40S

Image Segmentation
PyTorch
real_time
android
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FFNet-40S: Optimized for Qualcomm Devices

FFNet-40S is a "fuss-free network" that segments street scene images with per-pixel classes like road, sidewalk, and pedestrian. Trained on the Cityscapes dataset.

This is based on the implementation of FFNet-40S found here. This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the Qualcomm® AI Hub Models library to export with custom configurations. More details on model performance across various devices, can be found here.

Qualcomm AI Hub Models uses Qualcomm AI Hub Workbench to compile, profile, and evaluate this model. Sign up 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
ONNX w8a8 Universal QAIRT 2.45, ONNX Runtime 1.27.1 Download
QNN_DLC float Universal QAIRT 2.45 Download
QNN_DLC w8a8 Universal QAIRT 2.45 Download
TFLITE float Universal QAIRT 2.45 Download
TFLITE w8a8 Universal QAIRT 2.45 Download

For more device-specific assets and performance metrics, visit FFNet-40S on Qualcomm® AI Hub.

Option 2: Export with Custom Configurations

Use the Qualcomm® AI Hub Models 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 FFNet-40S on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.semantic_segmentation

Model Stats:

  • Model checkpoint: ffnet40S_dBBB_cityscapes_state_dict_quarts
  • Input resolution: 2048x1024
  • Number of output classes: 19
  • Number of parameters: 13.9M
  • Model size (float): 53.1 MB
  • Model size (w8a8): 13.5 MB

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
FFNet-40S ONNX float Snapdragon® X2 Elite 14.06 ms 24 - 24 MB NPU
FFNet-40S ONNX float Snapdragon® X Elite 31.528 ms 24 - 24 MB NPU
FFNet-40S ONNX float Snapdragon® 8 Gen 3 Mobile 22.232 ms 30 - 316 MB NPU
FFNet-40S ONNX float Snapdragon® 8 Gen 1 Mobile 52.29 ms 29 - 288 MB NPU
FFNet-40S ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) 32.232 ms 24 - 67 MB NPU
FFNet-40S ONNX float Qualcomm® QCS8450 52.29 ms 29 - 288 MB NPU
FFNet-40S ONNX float Qualcomm® Dragonwing™ IQ-9075 44.419 ms 24 - 27 MB NPU
FFNet-40S ONNX float Qualcomm® Dragonwing™ IQ-X7181 31.528 ms 24 - 24 MB NPU
FFNet-40S ONNX float Qualcomm® Dragonwing™ Q-8750 17.695 ms 7 - 192 MB NPU
FFNet-40S ONNX float Snapdragon® 8 Elite Mobile 17.695 ms 7 - 192 MB NPU
FFNet-40S ONNX float Snapdragon® 8 Elite Gen 5 Mobile 13.504 ms 5 - 217 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® X2 Elite 6.933 ms 7 - 7 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® X Elite 11.776 ms 9 - 9 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® 8 Gen 3 Mobile 7.39 ms 7 - 253 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® 8 Gen 1 Mobile 15.759 ms 7 - 254 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® Dragonwing™ QCS6490 48.787 ms 6 - 9 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 11.251 ms 0 - 12 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® QCS8450 15.759 ms 7 - 254 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® Dragonwing™ IQ-9075 11.778 ms 6 - 9 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® Dragonwing™ IQ-X7181 11.776 ms 9 - 9 MB NPU
FFNet-40S ONNX w8a8 Qualcomm® Dragonwing™ Q-8750 7.67 ms 1 - 191 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® 8 Elite Mobile 7.67 ms 1 - 191 MB NPU
FFNet-40S ONNX w8a8 Snapdragon® 8 Elite Gen 5 Mobile 6.634 ms 2 - 195 MB NPU
FFNet-40S QNN_DLC float Snapdragon® X2 Elite 14.618 ms 24 - 24 MB NPU
FFNet-40S QNN_DLC float Snapdragon® X Elite 37.705 ms 24 - 24 MB NPU
FFNet-40S QNN_DLC float Snapdragon® 8 Gen 3 Mobile 24.955 ms 24 - 293 MB NPU
FFNet-40S QNN_DLC float Snapdragon® 8 Gen 1 Mobile 63.448 ms 24 - 290 MB NPU
FFNet-40S QNN_DLC float Qualcomm® Dragonwing™ QCS8275 135.537 ms 24 - 219 MB NPU
FFNet-40S QNN_DLC float Qualcomm® Dragonwing™ QCS8550 (Proxy) 36.137 ms 19 - 242 MB NPU
FFNet-40S QNN_DLC float Qualcomm® SA8775P 48.907 ms 24 - 219 MB NPU
FFNet-40S QNN_DLC float Qualcomm® SA8650P 48.907 ms 24 - 219 MB NPU
FFNet-40S QNN_DLC float Qualcomm® SA8255P 48.907 ms 24 - 219 MB NPU
FFNet-40S QNN_DLC float Qualcomm® QCS8450 63.448 ms 24 - 290 MB NPU
FFNet-40S QNN_DLC float Qualcomm® Dragonwing™ IQ-9075 49.753 ms 24 - 52 MB NPU
FFNet-40S QNN_DLC float Qualcomm® Dragonwing™ IQ-X7181 37.705 ms 24 - 24 MB NPU
FFNet-40S QNN_DLC float Qualcomm® Dragonwing™ Q-8750 18.092 ms 0 - 224 MB NPU
FFNet-40S QNN_DLC float Qualcomm® SA7255P 135.537 ms 24 - 219 MB NPU
FFNet-40S QNN_DLC float Qualcomm® SA8295P 53.688 ms 24 - 224 MB NPU
FFNet-40S QNN_DLC float Snapdragon® 8 Elite Mobile 18.092 ms 0 - 224 MB NPU
FFNet-40S QNN_DLC float Snapdragon® 8 Elite Gen 5 Mobile 12.583 ms 20 - 261 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® X2 Elite 6.104 ms 6 - 6 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® X Elite 16.175 ms 6 - 6 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® 8 Gen 3 Mobile 10.502 ms 6 - 252 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® 8 Gen 1 Mobile 21.31 ms 6 - 252 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ QCS6490 55.759 ms 7 - 15 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ QCS8275 32.935 ms 6 - 202 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 15.051 ms 6 - 8 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® SA8775P 15.703 ms 6 - 203 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® SA8650P 15.703 ms 6 - 203 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® SA8255P 15.703 ms 6 - 203 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® QCS8450 21.31 ms 6 - 252 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ IQ-9075 15.635 ms 6 - 14 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ IQ-X7181 16.175 ms 6 - 6 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-6690 131.656 ms 6 - 239 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-7790 19.085 ms 6 - 223 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-8750 7.074 ms 6 - 216 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® SA7255P 32.935 ms 6 - 202 MB NPU
FFNet-40S QNN_DLC w8a8 Qualcomm® SA8295P 20.082 ms 6 - 204 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® 8 Elite Mobile 7.074 ms 6 - 216 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® 8 Elite Gen 5 Mobile 5.301 ms 6 - 233 MB NPU
FFNet-40S QNN_DLC w8a8 Snapdragon® 7 Gen 4 Mobile 19.085 ms 6 - 223 MB NPU
FFNet-40S TFLITE float Snapdragon® 8 Gen 3 Mobile 25.019 ms 1 - 305 MB NPU
FFNet-40S TFLITE float Snapdragon® 8 Gen 1 Mobile 63.785 ms 0 - 300 MB NPU
FFNet-40S TFLITE float Qualcomm® Dragonwing™ QCS8275 135.541 ms 2 - 210 MB NPU
FFNet-40S TFLITE float Qualcomm® Dragonwing™ QCS8550 (Proxy) 36.242 ms 2 - 5 MB NPU
FFNet-40S TFLITE float Qualcomm® SA8775P 49.038 ms 3 - 212 MB NPU
FFNet-40S TFLITE float Qualcomm® SA8650P 49.038 ms 3 - 212 MB NPU
FFNet-40S TFLITE float Qualcomm® SA8255P 49.038 ms 3 - 212 MB NPU
FFNet-40S TFLITE float Qualcomm® QCS8450 63.785 ms 0 - 300 MB NPU
FFNet-40S TFLITE float Qualcomm® Dragonwing™ IQ-9075 50.268 ms 0 - 56 MB NPU
FFNet-40S TFLITE float Qualcomm® Dragonwing™ Q-8750 18.056 ms 0 - 236 MB NPU
FFNet-40S TFLITE float Qualcomm® SA7255P 135.541 ms 2 - 210 MB NPU
FFNet-40S TFLITE float Qualcomm® SA8295P 53.682 ms 3 - 218 MB NPU
FFNet-40S TFLITE float Snapdragon® 8 Elite Mobile 18.056 ms 0 - 236 MB NPU
FFNet-40S TFLITE float Snapdragon® 8 Elite Gen 5 Mobile 12.69 ms 2 - 254 MB NPU
FFNet-40S TFLITE w8a8 Snapdragon® 8 Gen 3 Mobile 5.46 ms 1 - 248 MB NPU
FFNet-40S TFLITE w8a8 Snapdragon® 8 Gen 1 Mobile 12.396 ms 1 - 247 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ QCS6490 40.735 ms 1 - 23 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ QCS8275 20.07 ms 1 - 196 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 7.456 ms 1 - 4 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® SA8775P 8.263 ms 1 - 197 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® SA8650P 8.263 ms 1 - 197 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® SA8255P 8.263 ms 1 - 197 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® QCS8450 12.396 ms 1 - 247 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ IQ-9075 8.027 ms 1 - 23 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ Q-6690 102.048 ms 0 - 230 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ Q-7790 11.483 ms 1 - 216 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® Dragonwing™ Q-8750 3.985 ms 0 - 208 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® SA7255P 20.07 ms 1 - 196 MB NPU
FFNet-40S TFLITE w8a8 Qualcomm® SA8295P 11.663 ms 1 - 200 MB NPU
FFNet-40S TFLITE w8a8 Snapdragon® 8 Elite Mobile 3.985 ms 0 - 208 MB NPU
FFNet-40S TFLITE w8a8 Snapdragon® 8 Elite Gen 5 Mobile 2.996 ms 1 - 225 MB NPU
FFNet-40S TFLITE w8a8 Snapdragon® 7 Gen 4 Mobile 11.483 ms 1 - 216 MB NPU

License

  • The license for the original implementation of FFNet-40S can be found here.

References

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Paper for qualcomm/FFNet-40S