Title:
【発明の名称】画像処理装置及び方法
Document Type and Number:
Japanese Patent JP3015304
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain specified information and to suppress the visual change of a formed image from an original image, based on the image formed in an image processor, by adding a specified pattern representing specified information to a visually outputted image so that the pattern may be made difficult to be seen by one's eyes. SOLUTION: The pattern 1001 composed of 'ABCD 1234' is added by the pattern of 64 picture elements x 64 picture elements so that the pattern may be made difficult to be seen by one' s eyes and the addition is repeated for every main scanning 512 picture element and sub-scanning 512 line. This pattern is defined as the manufacturing number specific to a machine or the number that the manufacturing number is coded. By judging a copied matter, the copying machine can be limited. Further, when the possibility that a specified original which should not be originally copied exists is high in images to be read, a distinct pattern can be added. Namely, the density of the pattern can be changed according to the possiblity of the specified original.
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Inventors:
Masahiro Funada
Application Number:
JP28234996A
Publication Date:
March 06, 2000
Filing Date:
October 24, 1996
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G21/00; G03G21/04; G06T1/00; G06T7/00; H04N1/387; H04N1/40; H04N1/46; H04N1/60; G03G15/01; (IPC1-7): H04N1/387; G03G15/01; G03G21/00; G06T1/00; H04N1/40; H04N1/46; H04N1/60
Domestic Patent References:
| JP1316782A | ||||
| JP61285578A |
Attorney, Agent or Firm:
Giichi Marushima