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Learning OCR Process from Scratch – 004: Parsing OCR Detection Output

This story is from 2026-08-23. It is preserved in the archive; the latest stories are on the live feed.

In the previous post, I ran the PP-OCRv4 detection model and obtained its raw probability map. But this probability map is not yet a list of text boxes. Now we need to turn that prediction map into actual detection regions. The basic flow is: Probability Map → Thresholding → Contours → Box Filterin…

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  1. 2026-08-23 05:08 · DEV Community — AI
    Learning OCR Process from Scratch – 004: Parsing OCR Detection Output

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