Stable-Diffusion-v1.5 示例

此文档讲述使用 QAI AppBuilder Python API 利用 Qualcomm® Hexagon™ Processor (NPU) 推理 Stable-Diffusion-v1.5 文生图模型。

示例支持设备

设备	SoC
Fogwise® AIRbox Q900	QCS9075

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 matplotlib easyocr qai_hub_models transformers diffusers

运行脚本

• 进入示例目录

  QCS9075

  Device

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

• 执行推理

  Device

  python3 stable_diffusion_v1_5/stable_diffusion_v1_5.py --prompt spectacular view of northern lights from Alaska

  $ python3 stable_diffusion_v1_5/stable_diffusion_v1_5.py --prompt spectacular view of northern lights from Alaska
  /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
  Step 0 Running...
  Step 1 Running...
  Step 2 Running...
  Step 3 Running...
  Step 4 Running...
  Step 5 Running...
  Step 6 Running...
  Step 7 Running...
  Step 8 Running...
  Step 9 Running...
  Step 10 Running...
  Step 11 Running...
  Step 12 Running...
  Step 13 Running...
  Step 14 Running...
  Step 15 Running...
  Step 16 Running...
  Step 17 Running...
  Step 18 Running...
  Step 19 Running...
  /mnt/ssd/qualcomm/702/zzf_fork/test/ai-engine-direct-helper/samples/python/stable_diffusion_v1_5/stable_diffusion_v1_5.py:255: DeprecationWarning: 'mode' parameter is deprecated and will be removed in Pillow 13 (2026-10-15)
    output_image = Image.fromarray(output_image, mode="RGB")
  Image saved to '/mnt/ssd/qualcomm/702/zzf_fork/test/ai-engine-direct-helper/samples/python/stable_diffusion_v1_5/images/2025_10_30_03_55_02_6303777164_512.jpg'
  time consumes for inference 5.059798002243042(s)
   <W> Logs will be sent to the system's default channel
  /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/tmpyor75jks.PNG'
   <W> Logs will be sent to the system's default channel
  /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

  

  output image