Multi-stage Pipeline Evaluation: A case study of Thai ID OCR system

Multi-stage pipeline and its challenges

Thai ID OCR pipeline

Traditional evaluation approaches

Individual evaluation

End-to-end evaluation

The proposed solution

The Implementation of the end-to-end evaluation with an ideal module

  • End-to-end evaluation with an ideal card detection module
Fig. 1: Thai ID OCR pipeline with an ideal card detection module
  • End-to-end evaluation with an ideal text detection module
Fig. 2: Thai ID OCR pipeline with an ideal text detection module
Fig. 3: The ground-truth text detection bounding box annotations transformation
  • End-to-end evaluation with an ideal text reader module
  • End-to-end evaluation with an ideal entity mapping module
Fig. 4: Thai ID OCR pipeline with an ideal Entity mapping module
Fig. 5: The ideal entity mapping template generation

The implementation results comparison

Fig. 6: Comparison of increasing accuracy between pipelines applying different ideal modules

Conclusion

References

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