公开(公告)号：WO2021220213A1

公开(公告)日：2021-11-04

申请号：PCT/IB2021/053573

申请日：2021-04-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： AXELSSON, Pontus ,  ANSMAN GIERTZ, Nicklas A. ,  PERSSON, Roland ,  ÅKERLUND, Alf Linus ,  JÄRLEBERG, Anders F. ,  ROTSTEIN, Michael ,  KARLSSON, John E.

IPC: H04N1/00 ,  G06T7/13

Abstract: Methods for managing notes, either digital notes or images of physical notes. The methods use optical character recognition to convert handwritten content into characters and icons. The methods also determine sizes of non-square physical notes when imaged by a camera from various angles. For curled notes or damaged notes such as a note missing a comer, the methods detect and process edges of a physical note in an image and, using the detected edges, convert the image of the physical note into a corresponding digital note without curl or damage.