Method of analyzing marks made on a response sheet
US6854644B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Sep 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a method of determining a choice made by a user by analyzing marks made on a response sheet by the user. The method employs a response sheet having response areas in which a user is directed to make marks indicating choices. The marked response sheet is then scanned to produce a digital image and associated data of each response area. That data is analyzed for characteristics according to a set of predetermined principles. These principles are based on the form of the response areas on the response sheet. The presence of certain characteristics in the data determines whether a mark was made in the response area and whether the mark constitutes a choice by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.