Invention Grant
- Patent Title: Embedding computer information into printed media and process method thereof
- Patent Title (中): 将计算机信息嵌入印刷媒体及其处理方法
-
Application No.: US11430690Application Date: 2006-05-08
-
Publication No.: US07995247B2Publication Date: 2011-08-09
- Inventor: Zecang Gu
- Applicant: Zecang Gu
- Agency: Matthias Scholl P.C.
- Agent Matthias Scholl
- Priority: JP2005-139859 20050512; CN200610008124 20060221
- Main IPC: H04N1/40
- IPC: H04N1/40 ; H04N1/405

Abstract:
The present invention provides a method of generating information embedded halftone screen code. According to this method, massive digital information can be stored through printing on at least one type of print media. The information embedded can be read and recognized simply and reliably. The quality of the images will not be reduced after information embedded. The information printed on the media includes a predetermined array of halftone dots with different morphology including physical and geometrical characteristics, which forms the computer codes to embed information into printed content. The advantages of this invention are: the maximum similarity value can be reduced to under the threshold value according to this method; the recognition performance of the halftone screen code can be improved; and robustness can still be maintained at a high level even though the paper is defected or polluted.
Public/Granted literature
- US20060256386A1 Embedding computer information into printed media and process method thereof Public/Granted day:2006-11-16
Information query