Patent · US Active

Select type of test image based on similarity score to database image

US9773194B2 · kind B2 · utility

1Cited by

3References

15Claims

0Family size

Assignee

LONGSAND LIMITED · GB

Inventors

Tom Rosoman · Cambridge, GB
David Bettinson · Cambridge, GB
Chris Smith · South Burlington, US
Unai Ayo Aresti · Cambridge, GB

Key dates

Filing date	Jan 28, 2016
Grant date	Sep 26, 2017
Priority date	—
Expiry date	Jan 28, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG06V2201/09
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A homography is determined between a test image and a plurality of database images based on a location of a character along a main line of text of the test image. A similarity score is determined for each of the plurality of database images based on the determined homography. The similarity score may measure a similarity of a characteristic between the test image and the corresponding database image. The characteristic may be at a location separate from the main line of text of the test image. A type of the test image may be selected based on the similarity scores.

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