EP1136947A2
Expired / Lapsed
EP
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Information processing method
Assignee: Toshiba Corp
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Filing: 2001-03-13
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Granted: —
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Expires: 2021-03-13
Abstract
Abstract Main image information (101) representing a portrait face image of a person is prepared. Predetermined pattern image information (102), used as sub image information, is also prepared. Synthetic image information (103) is prepared by synthesizing the main image information (101) with the pattern image information (102) in such a manner that the pattern image information (102) is embedded in the main image information (101) in a state that is not recognizable to the eye of a human being. This synthetic image information (103) is recorded on an ID card (105) or the like as a visible image.
Inventors
- 👤 Takashi c/o Kabushiki Kaisha Toshiba Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:39
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/913; G; G06; G06T; G06T1/00; G06T1/0021; G06T1/0028; G06T2201/00; G06T2201/005; G06T2201/0051
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
An information processing method characterized
by comprising: a first step (106, 107) of preparing main image
information (101) that is recognizable to the naked eye
of a human being; a second step (108, 109) of preparing pattern
image information (102); a third step (110) of executing color difference
modulation processing (301) for the pattern image
information (102) prepared in the second step (108,
109) in accordance with a predetermined color
difference modulation amount (32), and superimposing
the pattern image information (102), which has been
modulated in color difference by the color difference
modulation processing (301), on the main image
information (101) prepared in the first step (106, 107),
thereby preparing synthetic image information (103);
and a fourth step (111) of recording the synthetic
image information (103), prepared in the third step
(110), on a recording medium (105) as a visible image.
Claim 2
Dependent Claim
32 words
An information processing method according to
claim 1, characterized in that the pattern image
information prepared (102) in the second step (108,
109) has a cyclic grid pattern having a predetermined
period.
Claim 3
Dependent Claim
87 words
An information processing method according to
claim 1, characterized in that said third step (110)
executes color difference modulation processing (301)
such that a first color alternates with a second color
complementary thereto, based on the pattern image
information (102) prepared in the second step (108,
109), and superimposes the pattern image information
(102), which has been modulated in color difference by
the color difference modulation processing (301), on
the main image information (101) prepared in the first
step (106, 107), thereby preparing synthetic image
information (103).
Claim 4
Dependent Claim
141 words
An information processing method characterized
by comprising: a first step (106, 107) of preparing main image
information (101) that is recognizable to the naked eye
of a human being; a second step (108, 109) of preparing a plurality
of kinds of pattern image information (102a, 102b),
which is defined by a repetition of a pattern image; a third step (110) of preparing synthetic image
information (103) by synthesizing the pattern image
information (102a, 102b) prepared in the second step
(108, 109) with a plurality of areas of the main image
information (101) prepared in the first step (106, 107),
such that a synthesized state is not recognizable to
the naked eye of the human being; and a fourth step (111) of recording the synthetic
image information (103), prepared in the third step
(110), on a recording medium as a visible image.
Claim 5
Dependent Claim
66 words
An information processing method according to
claim 4, characterized in that said second step (108,
109) prepares a plurality of kinds of pattern image
information (102a, 102b), said plurality of kinds of
pattern image information (102a, 102b) include first
pattern image information (102a) used as a reference,
and other pattern image information (102b) obtained by
rotating the first pattern image information (102a) by
a predetermined angle.
Claim 6
Dependent Claim
47 words
An image information processing according to
claim 4, characterized in that said second step (108,
109) prepares first pattern image information (102a)
and second pattern image information (102b), and said
second pattern image information (102b) is obtained by
rotating the first pattern image information (102a) by
90°.
Claim 7
Dependent Claim
210 words
An image processing step characterized by comprising: a first step (106, 107) of preparing main image
information (101) that is recognizable to the naked eye
of a human being; a second step (108, 109) of preparing sub image
information (102) by preparing first pattern image
information (102a) and second pattern image information
(102b) different from the first pattern image
information (102a), and by assigning the first and
second pattern image information (102a, 102b) to the
main image information (101) such that the first
pattern image information (102a) is assigned to an area
corresponding binary image information representing a
character or a symbol and such that the second pattern
image information (102b) is assigned to a background
area which is other than the area corresponding to the
character or the symbol; a third step (110) of preparing synthetic image
information (103) by synthesizing the sub image
information (102) prepared in the second step (108,
109) with the main image information (101) prepared in
the first step (106, 107), such that a synthesized
state is not recognizable to the naked eye of the human
being; and a fourth step (111) of recording the synthetic
image information (103), prepared in the third step
(110), on a recording medium (105) as a visible image.
Claim 8
Dependent Claim
49 words
An image information processing according to
claim 7, characterized in that said second step (108,
109) prepares first pattern image information (102a)
and second pattern image information (102b), and said
second pattern image information (102b) is obtained by
rotating the first pattern image information (102a) by
a predetermined angle.
References Cited (Backward Citations)
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