Scoreboard

OCR accuracy: the values each engine reads

Which checked values each OCR engine reads correctly, from the PDF and from the page image, with time and cost.

Its key points, its tables, how it was scored and its log load from /api/public/scoreboards/ocr-accuracy.

Test documents

Test set A and Test set B: each page with a numbered bounding box on every checked value, and the answers.

Term	Definition
OCR	Optical character recognition: reading the text, tables and marks of a page from its image or PDF.
engine	An OCR product or model that reads a page and returns its text, such as Mistral OCR, Landing AI or Reducto.
block	One part of a page as an engine returns it: a paragraph, a table, a heading or a figure.
bounding box	The rectangle that marks where something is printed on the page.
table cell	One value of a table, where a row and a column meet.
form field	A label on a form and the value written for it.
grounding	Linking each value of a reading to its bounding box on the page.
ground truth	The correct answers for a page, one fact per value, checkbox, choice or signature. Every reading is scored against them.
test set	The pages a scoreboard is measured on, with their ground truth.
grader	The program or model that compares a reading with the ground truth and counts what is right.