Patent · US Active

Table detection in ink notes

US7583841B2 · kind B2 · utility

3Cited by

9References

20Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Zhouchen Lin · Beijing, CN
Junfeng He · New York, US
Zhicheng Zhong · 红钢城街道, CN
Chun-Hui Hu · Beijing, CN
Jian Wang · Beijing, CN

Key dates

Filing date	Dec 21, 2005
Grant date	Sep 1, 2009
Priority date	—
Expiry date	Nov 25, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG06V30/347
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Computer-readable media having computer-executable instructions and apparatuses detect a table in a handwritten document. Line segments are derived from drawing strokes so that a bounding frame of a candidate table is obtained. An associated table structure is consequently recognized from the bounding frame, lines segments within the bounding frame, and their intersection points. A classifier that reflects at least one table characteristic is determined, and the candidate table is consequently validated or rejected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.