Patent EP1001604A2 successfully refreshed from Google Patents.
EP1001604A2
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EP
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Information processing apparatus and method
Assignee: Canon Inc
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Filing: 1999-11-05
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Granted: —
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Expires: 2019-11-05
Abstract
Abstract In an apparatus such as a digital camera or color facsimile apparatus using JPEG coding, since an input image is coded/compressed by hardware, a watermark embedding process before compression/coding causes a great increase in cost. For this reason, coded data or quantized data is input, and watermark information is embedded in the input data by using the table used to code or quantize the input data. <IMAGE> <IMAGE> <IMAGE>
Inventors
- 👤 Keiichi Iwamura
- 👤 Junichi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:54
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/46; H04N19/467; G; G06; G06T; G06T1/00; G06T1/0021; G06T1/0028; G06T1/0035; H04N1/00; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32154; H04N1/32165; H04N1/3217; H04N1/32267; H04N1/32277; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3233; H04N2201/3269; H04N2201/327
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
43 words
An image processing apparatus comprising: inputting means for inputting image data which has
been coded in accordance with a coding table; and embedding means for embedding added information in
the image data by modifying the input image data based
on the coding table.
Claim 2
Dependent Claim
14 words
The apparatus according to claim 1, wherein the
added information is electric watermark information.
Claim 3
Dependent Claim
19 words
The apparatus according to claim 1, wherein the
input image data has been coded by using discrete cosine
transformation.
Claim 4
Dependent Claim
19 words
The apparatus according to claim 1, wherein the
input image data has been coded by using discrete
wavelet transformation.
Claim 5
Dependent Claim
40 words
An image processing method comprising the steps of: inputting image data which has been coded in
accordance with a coding table; and embedding added information in the image data by
modifying the input image data based on the coding table.
Claim 6
Dependent Claim
63 words
A computer program product comprising a computer
readable medium having computer program code, for an
image processing method, said product comprising: input process procedure code for inputting image
data which has been coded in accordance with a coding
table; and embed process procedure code for embedding added
information in the image data by modifying the input
image data based on the coding table.
Claim 7
Dependent Claim
43 words
An information processing apparatus comprising: inputting means for inputting image data which has
been quantized in accordance with a quantizing table;
and embedding means for embedding added information in
the image data by modifying the input image data based
on the quantizing table.
Claim 8
Dependent Claim
14 words
The apparatus according to claim 7, wherein the
added information is electric watermark information.
Claim 9
Dependent Claim
18 words
The apparatus according to claim 7, wherein the
input image data has been subjected to discrete cosine
transformation.
Claim 10
Dependent Claim
18 words
The apparatus according to claim 7, wherein the
input image data has been subjected to discrete wavelet
transformation.
Claim 11
Dependent Claim
40 words
An information processing method comprising the
steps of: inputting image data which has been quantized in
accordance with a quantizing table; and embedding added information in the image data by
modifying the input image data based on the quantizing
table.
Claim 12
Dependent Claim
63 words
A computer program product comprising a computer
readable medium having computer program code, for an
information processing method, said product comprising: input process procedure code for inputting image
data which has been quantized in accordance with a
quantizing table; and embed process procedure code for embedding added
information in the image data by modifying the input
image data based on the quantizing table.
Claim 13
Dependent Claim
44 words
An information processing apparatus comprising: decoding means for decoding and inversely
quantizing coded and quantized data; embedding means for embedding added information in
the data output by said decoding means; and re-coding means for quantizing and coding the data
output by said embedding means.
Claim 14
Dependent Claim
14 words
The apparatus according to claim 13, wherein the
added information is electric watermark information.
Claim 15
Dependent Claim
30 words
The apparatus according to claim 13, wherein said
decoding means inputs the coded and quantized data
representing an image has been subjected to discrete
cosine transformation or discrete wavelet transformation.
Claim 16
Dependent Claim
25 words
The apparatus according to claim 13, wherein said
decoding means determines whether the coded and
quantized data is processed or not in a predetermined
unit.
Claim 17
Dependent Claim
38 words
An information processing method comprising the
steps of: decoding and inversely quantizing coded and
quantized data; embedding added information in the data output in
said decoding step; and re-quantizing and re-coding the data output in said
embedding step.
Claim 18
Dependent Claim
66 words
A computer program product comprising a computer
readable medium having computer program code, for an
information processing method, said product comprising: decoding process procedure code for decoding and
inversely quantizing coded and quantized data; embedding process procedure code for embedding
added information in the data output by said decoding
process; and re-coding process procedure code for quantizing and
coding the data output by said embedding process.
Claim 19
Dependent Claim
37 words
An information processing apparatus comprising: decoding means for decoding coded data; embedding means for embedding added information in
the data output by said decoding means; and re-coding means for coding the data output by said
embedding means.
Claim 20
Dependent Claim
14 words
The apparatus according to claim 19, wherein the
added information is electric watermark information.
Claim 21
Dependent Claim
28 words
The apparatus according to claim 19, wherein said
decoding means inputs the coded data representing an
image has been subjected to discrete cosine
transformation or discrete wavelet transformation.
Claim 22
Dependent Claim
23 words
The apparatus according to claim 19, wherein said
decoding means determines whether the coded data is
decoded or not in a predetermined unit.
Claim 23
Dependent Claim
31 words
An information processing method comprising the
steps of: decoding coded data; embedding added information in the data output in
said decoding step; and re-coding the data output by said embedding step.
Claim 24
Dependent Claim
59 words
A computer program product comprising a computer
readable medium having computer program code, for an
information processing method, said product comprising: decoding process procedure code for decoding coded
data; embedding process procedure code for embedding
added information in the data output by said decoding
process; and re-coding process procedure code for coding the
data output by said embedding process.
Claim 25
Dependent Claim
34 words
An information processing apparatus comprising: decoding means for decoding and inversely
quantizing coded and quantized data; and extracting means for extracting added information
embedded in the data which is output by said decoding
means.
Claim 26
Dependent Claim
14 words
The apparatus according to claim 25, wherein the
added information is electric watermark information.
Claim 27
Dependent Claim
28 words
The apparatus according to claim 25, wherein said
decoding means inputs the coded data representing an
image has been subjected to discrete cosine
transformation or discrete wavelet transformation.
Claim 28
Dependent Claim
23 words
The apparatus according to claim 25, wherein said
decoding means determines whether the coded data is
decoded or not in a predetermined unit.
Claim 29
Dependent Claim
31 words
An information processing method comprising the
steps of: decoding and inversely quantizing coded and
quantized data; and extracting added information embedded in the data
which is output in said decoding step.
Claim 30
Dependent Claim
54 words
A computer program product comprising a computer
readable medium having computer program code, for an
information processing method, said product comprising: decoding process procedure code for decoding and
inversely quantizing coded and quantized data; and extracting process procedure code for extracting
added information embedded in the data which is output
by said decoding process.
Claim 31
Dependent Claim
52 words
An image processing apparatus comprising: generating means for generating image data; compressing means for compressing the image data
generated by said generating means; and embedding means for embedding added information in
the image data compressed by said compressing means, wherein said compressing means and said embedding
means can be executed in independently.
Claim 32
Dependent Claim
14 words
The apparatus according to claim 31, wherein the
added information is electric watermark information.
Claim 33
Dependent Claim
26 words
The apparatus according to claim 31, wherein said
embedding means is executed when said image processing
means outputs data or said generating means does not
operate.
Claim 34
Dependent Claim
43 words
An image processing method comprising the steps of: generating image data; compressing the image data generated in said
generating step; embedding added information in the image data
compressed in said compressing step; and controlling operations of said compressing and
embedding steps in independently.
Claim 35
Dependent Claim
76 words
A computer program product comprising a computer
readable medium having computer program code, for an
image processing method, said product comprising: generating process procedure code for generating
image data; compressing process procedure code for compressing
the image data generated by said generating process; embedding process procedure code for embedding
added information in the image data compressed by said
compressing process; and controlling process procedure code for controlling
operations of said compressing and embedding processes
in independently.
Claim 36
Dependent Claim
33 words
A signal conveying instructions for causing a
programmable processing apparatus to become operable to
perform a method as set out in at least one of claims 5,
11, 17, 23, 29 and 34.
References Cited (Backward Citations)
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