VIT 示例

此文档讲述使用 QAI AppBuilder Python API 利用 Qualcomm® Hexagon™ Processor (NPU) 推理 VIT 目标识别模型。

示例支持设备

设备	SoC
Dragon Q6A	QCS6490
Dragon Q8B	SC8280XP

安装 QAI AppBuilder

提示

1. 请根据 QAI AppBuilder 安装方法 安装 QAI AppBuilder。

2. 请根据 创建 ADSP 环境变量 配置 ADSP 环境变量。

运行示例

安装依赖

Device

pip3 install requests tqdm qai-hub py3_wget opencv-python torch torchvision

运行脚本

• 进入示例目录

  QCS6490

  Device

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

  SC8280XP

  Device

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

• 准备输入图片，这里以以下图片为输入示例

  

  input image

• 执行推理

  Device

  python3 vit/vit.py

  $ python3 vit/vit.py
  Current file directory: /mnt/ssd/qualcomm/701/zzf_fork/ai-engine-direct-helper/samples/linux/python/vit
       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-5.4.0/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
  
     148.6ms [WARNING] Time: Read model file to memory. 32.50
  
       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
  
     351.2ms [WARNING] Time: contextCreateFromBinary. 202.52
  
     351.2ms [WARNING] Time: UnmapViewOfFile. 0.00
  
     351.9ms [WARNING] Time: model_initialize vit 351.87
  
     560.6ms [WARNING] Time: model_inference vit 159.35
  
  Top 5 predictions for image:
  
  Samoyed 0.7157644629
  Pomeranian 0.0566752702
  keeshond 0.0083217919
  Eskimo dog 0.0057556415
  Japanese spaniel 0.003955483
       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
  
  /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-5.4.0/ipc/fastrpc/rpcmem/src/rpcmem_android.c:42:dummy call to rpcmem_deinit, rpcmem APIs will be used from libxdsprpc
     585.7ms [WARNING] Time: model_destroy vit 20.11

  打印结果可以看到 Samoyed 置信度最高，这与输入图片内容吻合。