Patent CA962295A successfully refreshed from Google Patents.
EP1102209A2
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Image processing
Assignee: Seiko Epson Corp
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Filing: 2000-11-08
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Granted: —
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Expires: 2020-11-08
Abstract
Abstract Noise adding unit 700 reads the downloaded target JPEG image from memory and adds designated noise to that JPEG image. Reverse DCT transformation unit 710 performs reverse discrete cosine transformation on the noise-added JPEG image, and transforms it from space frequency to spatial coordinates. Binarization unit 720 binarizes the image that has been expanded to spatial coordinates. This makes it possible to achieve the same processing as half-tone processing on images that have undergone normal orthogonal transformation without putting a large burden on the CPU, etc. and with a small data volume even when transferring via a communication path.
Inventors
- 👤 Teruyuki c/o Seiko Epson Corporation Takata
- 👤 Fumio c/o Seiko Epson Corporation Nagasaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 01:03
CPC Classifications
G; G06; G06T; G06T9/00; G06T5/00; G06T5/10; G06T5/70; G06T7/00; G06T7/10; G06T7/136; G06T9/007; H; H04; H04N; H04N1/00; H04N1/40; H04N1/405; H04N1/4051; H04N19/00; H04N19/90; G06T2207/00; G06T2207/10; G06T2207/10024; G06T2207/20; G06T2207/20048; G06T2207/20052; H04N19/60; H04N19/63
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
58 words
An image processing apparatus that performs designated processes
on a normal orthogonally transformed image, said image processing
apparatus comprising: a noise adding unit that adds designated noise to said image that has
undergone said normal orthogonal transformation, wherein said noise is noise obtained by performing the same
transformation as said normal orthogonal transformation on a designated
dither matrix.
Claim 2
Dependent Claim
17 words
The image processing apparatus in accordance with claim 1,
wherein the dither matrix is a Bayer matrix.
Claim 3
Dependent Claim
20 words
The image processing apparatus in accordance with claim 1 or 2,
wherein said normal orthogonal transformation is discrete cosine
transformation.
Claim 4
Dependent Claim
28 words
The image processing apparatus in accordance with any one of
claims 1 through 3, wherein said image that has undergone said normal
orthogonal transformation is a JPEG image.
Claim 5
Dependent Claim
41 words
The image processing apparatus in accordance with any one of
claims 1 through 4 further comprising: a reverse transformation unit that performs a reverse normal
orthogonal transformation, which is a reverse transformation of said normal
orthogonal transformation, on said noise-added image.
Claim 6
Dependent Claim
31 words
The image processing apparatus in accordance with claim 5 further
comprising: a binarization unit that binarizes said image, which has undergone
said reverse normal orthogonal transformation, using a designated threshold
value.
Claim 7
Dependent Claim
18 words
The image processing apparatus in accordance with claim 6,
wherein said designated threshold value is a certain value.
Claim 8
Dependent Claim
23 words
The image processing apparatus in accordance with claim 6 further
comprising: an output unit that outputs said binarized image by display or
printing.
Claim 9
Dependent Claim
83 words
An image processing apparatus that performs designated processes
on a normal orthogonally transformed image, said image processing
apparatus comprising: a noise adding unit that adds designated noise to said image that has
undergone said normal orthogonal transformation; a reverse transformation unit that performs a reverse normal
orthogonal transformation, which is a reverse transformation of said normal
orthogonal transformation, on said noise-added image; and a binarization unit that binarizes said image, which has undergone
said reverse normal orthogonal transformation, using a designated threshold
value.
Claim 10
Dependent Claim
23 words
The image processing apparatus in accordance with claim 9 further
comprising: an output unit that outputs said binarized image by display or
printing.
Claim 11
Dependent Claim
41 words
An image processing apparatus that performs designated
processing on an image for which high frequency components have been
removed, said image processing apparatus comprising: a noise adding unit that adds designated noise to the image with said
high frequency components removed.
Claim 12
Dependent Claim
25 words
The image processing apparatus in accordance with claim 11,
wherein said noise is noise obtained by performing normal orthogonal
transformation on the designated dither matrix.
Claim 13
Dependent Claim
94 words
An image processing system that transfers images from a sending
device to a receiving device, wherein said sending device comprises: a noise adding unit that adds designated noise to an image which has
undergone normal orthogonal transformation; and a sending unit that sends said image to which said noise has been
added via a communication path, wherein said receiving device comprises: a receiving unit for receiving said sent image; and a reverse transformation unit for performing reverse normal
orthogonal transformation, which is a reverse transformation of said normal
orthogonal transformation, on said received image.
Claim 14
Dependent Claim
30 words
The image processing system in accordance with claim 13, wherein
said noise is noise obtained by performing the same transformation as said
normal orthogonal transformation on a designated dither matrix.
Claim 15
Dependent Claim
37 words
The image processing system in accordance with claim 13 or 14,
wherein said receiving device further comprises a binarization unit that
binarizes said image, which has undergone said reverse normal orthogonal
transformation, using a designated threshold value.
Claim 16
Dependent Claim
27 words
The image processing system in accordance with claim 15, wherein
said receiving device further comprises an output unit that outputs said
binarized image by display or printing.
Claim 17
Dependent Claim
111 words
A memory device that is connected to an image processing
apparatus that performs designated processes on an image on which normal
orthogonal transformation is performed, wherein said image processing apparatus comprises a noise adding
unit that adds noise obtained by performing the same transformation as said
normal orthogonal transformation on a designated dither matrix to said
image that has undergone said normal orthogonal transformation, said
memory device comprising: a first memory unit that stores said image that has undergone said
normal orthogonal transformation; and a second memory unit that stores said dither matrix or stores noise
obtained by performing the same transformation as said normal orthogonal
transformation on said dither matrix.
Claim 18
Dependent Claim
16 words
The memory device in accordance with claim 17, wherein said
dither matrix is a Bayer matrix.
Claim 19
Dependent Claim
57 words
An image processing method that performs designated processing
on a normal orthogonally transformed image, said image processing method
comprising the step of: (a) adding designated noise to said image that has undergone said
normal orthogonal transformation, wherein said noise is noise obtained by performing the same
transformation as said normal orthogonal transformation on a designated
dither matrix
Claim 20
Dependent Claim
37 words
The image processing method in accordance with claim 19 further
comprising the step of: (b) performing reverse normal orthogonal transformation, which is a
reverse transformation of said normal orthogonal transformation, on said
image with said noise added.
Claim 21
Dependent Claim
31 words
The image processing method in accordance with claim 20 further
comprising the step of: (c) binarizing said image, which has undergone said reverse normal
orthogonal transformation, using a designated threshold value.
Claim 22
Dependent Claim
23 words
The image processing method in accordance with claim 21 further
comprising the step of: (d) outputting said binarized image by display or printing.
Claim 23
Dependent Claim
77 words
An image processing method that performs designated processing
on a normal orthogonally transformed image, said image processing method
comprising the steps of: (a) adding designated noise to said image that has undergone said
normal orthogonal transformation; (b) performing reverse normal orthogonal transformation, which is a
reverse transformation of said normal orthogonal transformation, on said
image with said noise added; and (c) binarizing said image, which has undergone said reverse normal
orthogonal transformation, using a designated threshold value.
Claim 24
Dependent Claim
23 words
The image processing method in accordance with claim 23 further
comprising the step of: (d) outputting said binarized image by display or printing.
Claim 25
Dependent Claim
73 words
A computer program product that causes a computer to perform
designated processes on a normal orthogonally transformed image, said
computer program product comprising: a first program code that causes said computer to add noise obtained
by performing the same transformation as said normal orthogonal
transformation on a designated dither matrix to said image that has
undergone said normal orthogonal transformation; and a computer readable medium, in which said first program code is
stored.
Claim 26
Dependent Claim
50 words
A computer program product in accordance with claim 25 further
comprising: a second program code that causes said computer to perform a reverse
normal orthogonal transformation, which is a reverse transformation of said
normal orthogonal transformation, on said noise-added image, said second
code being stored in said computer readable medium.
Claim 27
Dependent Claim
46 words
A computer program product in accordance with claim 26 further
comprising: a third program code that causes said computer to binarize said image,
which has undergone said reverse normal orthogonal transformation, using a
designated threshold value, said third program being stored in said computer
readable medium.
Claim 28
Dependent Claim
114 words
A computer program product that causes a computer to perform
designated processes on a normal orthogonally transformed image, said
computer program product comprising: a first program code that causes said computer to add designated noise
to said image that has undergone said normal orthogonal transformation; a second program code that causes said computer to perform a reverse
normal orthogonal transformation, which is a reverse transformation of said
normal orthogonal transformation, on said noise-added image; a third program code that causes said computer to binarize said image,
which has undergone said reverse normal orthogonal transformation, using a
designated threshold value; and a computer readable medium, in which said first through third
program codes are stored.
Claim 29
Dependent Claim
21 words
A computer readable medium that stores an image which is
obtained by adding designated noise to a normal orthogonally transformed
image.
Claim 30
Dependent Claim
68 words
A data signal embodied in a carrier, said data signal representing a
computer program that causes a computer to perform designated processes
on a normal orthogonally transformed image, said data signal comprising: a program code that causes said computer to add noise obtained by
performing the same transformation as said normal orthogonal
transformation on a designated dither matrix to said image that has
undergone said normal orthogonal transformation.
Claim 31
Dependent Claim
109 words
A data signal embodied in a carrier, said data signal representing a
computer program that causes a computer to perform designated processes
on a normal orthogonally transformed image, said data signal comprising: a first program code that causes said computer to add designated noise
to said image that has undergone said normal orthogonal transformation; a second program code that causes said computer to perform a reverse
normal orthogonal transformation, which is a reverse transformation of said
normal orthogonal transformation, on said noise-added image; and a third program code that causes said computer to binarize said image,
which has undergone said reverse normal orthogonal transformation, using a
designated threshold value.
Claim 32
Dependent Claim
57 words
A computer program that causes a computer to perform designated
processes on a normal orthogonally transformed image, said computer
program comprising: a program code that causes said computer to add noise obtained by
performing the same transformation as said normal orthogonal
transformation on a designated dither matrix to said image that has
undergone said normal orthogonal transformation.
Claim 33
Dependent Claim
98 words
A computer program that causes a computer to perform designated
processes on a normal orthogonally transformed image, said computer
program comprising: a first program code that causes said computer to add designated noise
to said image that has undergone said normal orthogonal transformation; a second program code that causes said computer to perform a reverse
normal orthogonal transformation, which is a reverse transformation of said
normal orthogonal transformation, on said noise-added image; and a third program code that causes said computer to binarize said image,
which has undergone said reverse normal orthogonal transformation, using a
designated threshold value.
References Cited (Backward Citations)
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