Recognising the right characters is insufficient if values are assigned to the wrong rows or columns. Layout is part of extracting usable information from a product document.
Tesseract's quality guidance discusses page segmentation and limitations involving document layouts such as tables. Tesseract — Improving OCR output quality.
Check the associations
For a specification sheet, verify that each value remains connected to the correct field and item. A clean text dump can conceal a shifted column or merged heading.
Validate before reuse
Compare important fields with the original document and preserve uncertainty where the layout is ambiguous. Do not fill missing relationships from a nearby row just because the result looks complete. Accurate extraction includes both the text and its intended association.
Source reviewed 25 October 2026. Interpretation and original diagrams: PLUSHIP / Qunhe. Examples are illustrative.
Related reading
An Unusual Image Is Not Automatically a Defective Product
Instance Masks Separate Individual Objects in a Product Photograph