Unet-Segmentation Example

This document explains how to use the QAI AppBuilder Python API to perform inference with the Unet-Segmentation image segmentation model using the Qualcomm® Hexagon™ Processor (NPU).

Supported Devices

Device	SoC
Fogwise® AIRbox Q900	QCS9075

Install QAI AppBuilder

tip

1. Please install QAI AppBuilder according to the QAI AppBuilder Installation Guide.

2. Please configure the ADSP environment variables according to Configuring ADSP Environment Variables.

Run Example

Install Dependencies

Device

pip3 install requests tqdm qai-hub py3_wget opencv-python torch torchvision matplotlib easyocr qai_hub_models transformers

Run the Script

• Navigate to the example directory

  QCS9075

  Device

  cd ai-engine-direct-helper/samples/python

• Prepare the input image. The following image is used as an example:

  

  Input image

• Execute inference

  Device

  python3 unet_segmentation/unet_segmentation.py

  $ python3 unet_segmentation/unet_segmentation.py
       0.0ms [WARNING]  <W> Initializing HtpProvider
  
  /prj/qct/webtech_scratch20/mlg_user_admin/qaisw_source_repo/rel/qairt-2.37.1/point_release/SNPE_SRC/avante-tools/prebuilt/dsp/hexagon-sdk-5.5.5/ipc/fastrpc/rpcmem/src/rpcmem_android.c:38:dummy call to rpcmem_init, rpcmem APIs will be used from libxdsprpc
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
     153.4ms [WARNING] Time: Read model file to memory. 35.26
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
     264.9ms [WARNING] Time: contextCreateFromBinary. 111.40
  
     265.0ms [WARNING] Time: UnmapViewOfFile. 0.00
  
     267.2ms [WARNING] Time: model_initialize unet_segmentation 267.13
  
     627.1ms [WARNING] Time: model_inference unet_segmentation 246.67
  
  /usr/bin/xdg-open: 882: www-browser: not found
  /usr/bin/xdg-open: 882: links2: not found
  /usr/bin/xdg-open: 882: elinks: not found
  /usr/bin/xdg-open: 882: links: not found
  /usr/bin/xdg-open: 882: lynx: not found
  /usr/bin/xdg-open: 882: w3m: not found
  xdg-open: no method available for opening '/tmp/tmp99xq_ell.PNG'
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
       0.0ms [WARNING]  <W> This META does not have Alloc2 Support
  
  /usr/bin/xdg-open: 882: www-browser: not found
  /prj/qct/webtech_scratch20/mlg_user_admin/qaisw_source_repo/rel/qairt-2.37.1/point_release/SNPE_SRC/avante-tools/prebuilt/dsp/hexagon-sdk-5.5.5/ipc/fastrpc/rpcmem/src/rpcmem_android.c:42:dummy call to rpcmem_deinit, rpcmem APIs will be used from libxdsprpc
    2383.4ms [WARNING] Time: model_destroy unet_segmentation 67.34
  
  /usr/bin/xdg-open: 882: links2: not found
  /usr/bin/xdg-open: 882: elinks: not found
  /usr/bin/xdg-open: 882: links: not found
  /usr/bin/xdg-open: 882: lynx: not found
  /usr/bin/xdg-open: 882: w3m: not found
  xdg-open: no method available for opening '/tmp/tmp0hq03xtm.PNG'

  

  Output image