EasyOCR Example

This document describes how to use the QAI AppBuilder Python API to run inference with the EasyOCR text recognition model on 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. Configure ADSP environment variables as described in Create ADSP Environment Variables.

Run the Example

Install Dependencies

Device

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

Run the Script

• Navigate to the example directory

  QCS9075

  Device

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

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

  

  input image

• Run inference

  Device

  python3 easy_ocr/easy_ocr.py

  $ python3 easy_ocr/easy_ocr.py
  /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
  Calling EasyOCR_Detector::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  Calling EasyOCR_Recognizer::Inference on NPU
  白日依山尽
  黄河入海流
  欲穷千里目
  更上一层楼
  The sun beyond the mountain glows,
  The Yellow River seawards flows_
  You can enjoy a grander sight,
  By climbing to a greater height。
  
  Demo image display is disabled by default for remote servers. To override, set `QAIHM_ALWAYS_DISPLAY_OUTPUT=1` in your environment.
  
  Saving image to /mnt/ssd/qualcomm/702/zzf_fork/test/ai-engine-direct-helper/samples/python/build/image.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

  Recognition results

  白日依山尽
  黄河入海流
  欲穷千里目
  更上一层楼
  The sun beyond the mountain glows,
  The Yellow River seawards flows_
  You can enjoy a grander sight,
  By climbing to a greater height。