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DnCNN

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DnCNN: Optimized for Qualcomm Devices

DnCNN is a 17-layer denoising convolutional neural network that uses residual learning to remove Gaussian noise (sigma=25) from grayscale images. The network predicts the noise residual and subtracts it from the input to produce a clean image.

This is based on the implementation of DnCNN 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 2.50, ONNX Runtime 1.27.1 Download
ONNX w8a8 Universal QAIRT 2.50, ONNX Runtime 1.27.1 Download
QNN_DLC float Universal QAIRT 2.50 Download
QNN_DLC w8a8 Universal QAIRT 2.50 Download
TFLITE float Universal QAIRT 2.50 Download
TFLITE w8a8 Universal QAIRT 2.50 Download

For more device-specific assets and performance metrics, visit DnCNN 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 DnCNN on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.image_editing

Model Stats:

  • Input resolution: 256x256
  • Model checkpoint: dncnn_25
  • Model size (float): 2.12 MB
  • Model size (w8a8): 581 KB
  • Number of parameters: 555K

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
DnCNN ONNX float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 3.176 ms 0 - 137 MB NPU
DnCNN ONNX float Snapdragon® 8 Elite For Galaxy Mobile 4.146 ms 0 - 135 MB NPU
DnCNN ONNX float Snapdragon® X2 Elite 4.004 ms 1 - 1 MB NPU
DnCNN ONNX float Snapdragon® X Elite 7.172 ms 0 - 0 MB NPU
DnCNN ONNX float Snapdragon® 8 Gen 3 Mobile 5.157 ms 1 - 170 MB NPU
DnCNN ONNX float Snapdragon® 8 Gen 1 Mobile 13.062 ms 1 - 176 MB NPU
DnCNN ONNX float Qualcomm® Dragonwing™ IQ-8275 16.066 ms 1 - 5 MB NPU
DnCNN ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) 6.919 ms 1 - 3 MB NPU
DnCNN ONNX float Qualcomm® QCS8450 13.062 ms 1 - 176 MB NPU
DnCNN ONNX float Qualcomm® Dragonwing™ IQ-9075 14.355 ms 1 - 4 MB NPU
DnCNN ONNX float Qualcomm® Dragonwing™ IQ-X7181 7.172 ms 0 - 0 MB NPU
DnCNN ONNX float Qualcomm® Dragonwing™ Q-8750 4.146 ms 0 - 135 MB NPU
DnCNN ONNX w8a8 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.81 ms 0 - 35 MB NPU
DnCNN ONNX w8a8 Snapdragon® 8 Elite For Galaxy Mobile 1.212 ms 0 - 34 MB NPU
DnCNN ONNX w8a8 Snapdragon® X2 Elite 1.036 ms 1 - 1 MB NPU
DnCNN ONNX w8a8 Snapdragon® X Elite 1.872 ms 0 - 0 MB NPU
DnCNN ONNX w8a8 Snapdragon® 8 Gen 3 Mobile 1.327 ms 0 - 52 MB NPU
DnCNN ONNX w8a8 Snapdragon® 8 Gen 1 Mobile 2.39 ms 0 - 58 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ QCS6490 7.84 ms 0 - 3 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ IQ-8275 2.196 ms 0 - 4 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 1.793 ms 0 - 2 MB NPU
DnCNN ONNX w8a8 Qualcomm® QCS8450 2.39 ms 0 - 58 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ IQ-9075 1.893 ms 0 - 3 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ IQ-X7181 1.872 ms 0 - 0 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ Q-6690 38.886 ms 0 - 141 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ Q-7790 3.281 ms 0 - 139 MB NPU
DnCNN ONNX w8a8 Qualcomm® Dragonwing™ Q-8750 1.212 ms 0 - 34 MB NPU
DnCNN ONNX w8a8 Snapdragon® 7 Gen 4 Mobile 3.281 ms 0 - 139 MB NPU
DnCNN QNN_DLC float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 3.042 ms 0 - 140 MB NPU
DnCNN QNN_DLC float Snapdragon® 8 Elite For Galaxy Mobile 4.04 ms 0 - 136 MB NPU
DnCNN QNN_DLC float Snapdragon® X2 Elite 4.182 ms 0 - 0 MB NPU
DnCNN QNN_DLC float Snapdragon® X Elite 7.29 ms 0 - 0 MB NPU
DnCNN QNN_DLC float Snapdragon® 8 Gen 3 Mobile 5.065 ms 0 - 170 MB NPU
DnCNN QNN_DLC float Snapdragon® 8 Gen 1 Mobile 12.988 ms 0 - 174 MB NPU
DnCNN QNN_DLC float Qualcomm® Dragonwing™ IQ-8275 15.833 ms 0 - 4 MB NPU
DnCNN QNN_DLC float Qualcomm® Dragonwing™ QCS8550 (Proxy) 6.797 ms 0 - 2 MB NPU
DnCNN QNN_DLC float Qualcomm® QCS8450 12.988 ms 0 - 174 MB NPU
DnCNN QNN_DLC float Qualcomm® Dragonwing™ IQ-9075 14.094 ms 0 - 3 MB NPU
DnCNN QNN_DLC float Qualcomm® Dragonwing™ IQ-X7181 7.29 ms 0 - 0 MB NPU
DnCNN QNN_DLC float Qualcomm® Dragonwing™ Q-8750 4.04 ms 0 - 136 MB NPU
DnCNN QNN_DLC float Qualcomm® SA8295P 15.205 ms 0 - 136 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.81 ms 0 - 33 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® 8 Elite For Galaxy Mobile 1.206 ms 0 - 31 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® X2 Elite 1.195 ms 0 - 0 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® X Elite 1.99 ms 0 - 0 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® 8 Gen 3 Mobile 1.317 ms 0 - 50 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® 8 Gen 1 Mobile 2.358 ms 0 - 55 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ QCS6490 7.514 ms 0 - 2 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ IQ-8275 2.178 ms 0 - 3 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 1.791 ms 0 - 1 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® QCS8450 2.358 ms 0 - 55 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ IQ-9075 1.875 ms 0 - 2 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ IQ-X7181 1.99 ms 0 - 0 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-6690 38.762 ms 0 - 138 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-7790 3.27 ms 0 - 136 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® Dragonwing™ Q-8750 1.206 ms 0 - 31 MB NPU
DnCNN QNN_DLC w8a8 Qualcomm® SA8295P 4.099 ms 0 - 30 MB NPU
DnCNN QNN_DLC w8a8 Snapdragon® 7 Gen 4 Mobile 3.27 ms 0 - 136 MB NPU
DnCNN TFLITE float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 3.069 ms 0 - 141 MB NPU
DnCNN TFLITE float Snapdragon® 8 Elite For Galaxy Mobile 4.035 ms 0 - 142 MB NPU
DnCNN TFLITE float Snapdragon® 8 Gen 3 Mobile 5.092 ms 0 - 170 MB NPU
DnCNN TFLITE float Snapdragon® 8 Gen 1 Mobile 12.976 ms 0 - 173 MB NPU
DnCNN TFLITE float Qualcomm® Dragonwing™ IQ-8275 15.819 ms 0 - 5 MB NPU
DnCNN TFLITE float Qualcomm® Dragonwing™ QCS8550 (Proxy) 6.712 ms 0 - 2 MB NPU
DnCNN TFLITE float Qualcomm® SA8775P 13.85 ms 0 - 141 MB NPU
DnCNN TFLITE float Qualcomm® SA8650P 13.85 ms 0 - 141 MB NPU
DnCNN TFLITE float Qualcomm® SA8255P 13.85 ms 0 - 141 MB NPU
DnCNN TFLITE float Qualcomm® QCS8450 12.976 ms 0 - 173 MB NPU
DnCNN TFLITE float Qualcomm® Dragonwing™ IQ-9075 13.67 ms 0 - 4 MB NPU
DnCNN TFLITE float Qualcomm® Dragonwing™ Q-8750 4.035 ms 0 - 142 MB NPU
DnCNN TFLITE float Qualcomm® SA7255P 55.989 ms 0 - 138 MB NPU
DnCNN TFLITE float Qualcomm® SA8295P 15.339 ms 0 - 137 MB NPU
DnCNN TFLITE w8a8 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.773 ms 0 - 32 MB NPU
DnCNN TFLITE w8a8 Snapdragon® 8 Elite For Galaxy Mobile 1.185 ms 0 - 36 MB NPU
DnCNN TFLITE w8a8 Snapdragon® 8 Gen 3 Mobile 1.296 ms 0 - 50 MB NPU
DnCNN TFLITE w8a8 Snapdragon® 8 Gen 1 Mobile 2.328 ms 0 - 56 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ QCS6490 7.549 ms 0 - 3 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ IQ-8275 2.13 ms 0 - 4 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ QCS8550 (Proxy) 1.71 ms 0 - 17 MB NPU
DnCNN TFLITE w8a8 Qualcomm® SA8775P 1.956 ms 0 - 34 MB NPU
DnCNN TFLITE w8a8 Qualcomm® SA8650P 1.956 ms 0 - 34 MB NPU
DnCNN TFLITE w8a8 Qualcomm® SA8255P 1.956 ms 0 - 34 MB NPU
DnCNN TFLITE w8a8 Qualcomm® QCS8450 2.328 ms 0 - 56 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ IQ-9075 1.816 ms 0 - 3 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ Q-6690 38.741 ms 0 - 138 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ Q-7790 3.218 ms 0 - 137 MB NPU
DnCNN TFLITE w8a8 Qualcomm® Dragonwing™ Q-8750 1.185 ms 0 - 36 MB NPU
DnCNN TFLITE w8a8 Qualcomm® SA7255P 7.502 ms 0 - 33 MB NPU
DnCNN TFLITE w8a8 Qualcomm® SA8295P 4.071 ms 0 - 30 MB NPU
DnCNN TFLITE w8a8 Snapdragon® 7 Gen 4 Mobile 3.218 ms 0 - 137 MB NPU

License

  • The license for the original implementation of DnCNN can be found here.

References

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Paper for qualcomm/DnCNN