Computer implemented method for recognizing answer sheet
US11823001B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 28, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Jun 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K17/0032
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method for recognizing an answer sheet includes the steps of: reading a filled answer sheet comprising at least one set of graphical codes; locating each set of graphical codes in the answer sheet; a set of graphical codes comprising one grid or two grids, wherein for each set of graphical codes, if the function mark of the first grid is filled, two sets or four sets of 8-digit binary codes are obtained according to the filling state of each of the filling areas in each grid of the set of graphical codes; and recognizing the corresponding characters according to the encoding format determined by the encoding format mark. If the function mark in the first grid is un-filled, the filling states of the eight icons of the encoding format mark are converted to the third set of binary codes for character recognition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.