System and method for extracting text from portable document format data

CN114998918BActive Publication Date: 2026-11-03CANVA PTY LTD
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Patent Information

Application Number
CN202210195184.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-03-02
Filing Date
2022-03-01
Publication Date
2026-11-03
Estimated Expiration
2042-03-01

AI Technical Summary

Technical Problem

Existing PDF formats suffer from inefficient data editing and storage/processing.

Method used

By processing PDF data through a computer system, glyphs are identified and classified, text regions are generated, similar glyph groups are merged and associated with text regions, and more efficient text elements are generated.

Benefits of technology

It improves the efficiency of the editing process, reduces the need for storage and processing resources, provides a better user experience, and results in smaller document sizes.

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Abstract

Described herein is a computer-implemented method. The method includes accessing, by a computer system comprising a processing unit, portable document format (PDF) data defining a plurality of glyphs, classifying the plurality of glyphs into one or more glyph sets, and computing an extended glyph bounding box for each glyph. Each glyph set is processed to determine one or more text regions, each text region being associated with one or more glyphs from the glyph set having a common overlapping extended bounding box.
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Citation Information

Patent Citations

  • Recognizing typewritten and handwritten characters using end-to-end deep learning

    US20200302208A1