EP0410700A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image processing apparatus
Assignee: Canon Inc
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Filing: 1990-07-24
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Granted: —
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Expires: 2010-07-24
Abstract
Abstract An image processing apparatus includes an input unit for inputting a plurality of color component signals, and a processing unit for executing processing for some color component signals of the plurality of color component signals, which processing is different from that for the remaining color component signals, in accordance with spatial frequency gain characteristics of the plurality of color component signals input by the input unit.
Inventors
- 👤 Masahiro C/O Canon Kabushiki Kaisha Funada
- 👤 Yoichi C/O Canon Kabushiki Kaisha Takaragi
- 👤 Shinobu C/O Canon Kabushiki Kaisha Arimoto
- 👤 Michio C/O Canon Kabushiki Kaisha Kawase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 05:46
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40068; H04N1/46; H04N1/48; H04N1/486; H04N1/488; H04N1/56; H04N1/58
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
66 words
An image processing apparatus comprising: a) input means for inputting a plurality of color component signals; and b) processing means for executing processing for some color component signals of said plurality of color component signals, which processing is different from that for the remaining color component signals, in accordance with spatial frequency gain characteristics of said plurality of color component signals input by said input means.
Claim 2
Dependent Claim
66 words
An image processing apparatus comprising: a) input means for inputting a plurality of color component signals; and b) processing means for executing processing for some color component signals of said plurality of color component signals, which processing is different from that for the remaining color component signals, in accordance with spatial frequency gain characteristics of said plurality of color component signals input by said input means.
Claim 3
Dependent Claim
21 words
An apparatus according to claim 1, wherein said input means generates a plurality of image signals based on different spectral characteristics.
Claim 4
Dependent Claim
18 words
An apparatus according to claim 2, wherein said input means comprises a plurality of parallel CCD line sensors.
Claim 5
Dependent Claim
23 words
An apparatus according to claim 1, wherein said processing means includes smoothing means for smoothing some of said plurality of color component signals.
Claim 6
Dependent Claim
27 words
An apparatus according to claim 1, wherein said processing means includes calculation means for performing an interpolation calculation of some of said plurality of color component signals.
Claim 7
Dependent Claim
86 words
An image processing apparatus comprising: a) input means for inputting first and second color component signals; b) smoothing means for smoothing the first input color component signal input by said input means; c) judging means for judging a chromatic/achromatic level of an input image indicated by the first and second input color component signals using the second input color component signal having lower spatial frequency gain characteristics than those of the first color component signal, and the first color component signal smoothed by said smoothing means.
Claim 8
Dependent Claim
86 words
An image processing apparatus comprising: a) input means for inputting first and second color component signals; b) smoothing means for smoothing the first input color component signal input by said input means; c) judging means for judging a chromatic/achromatic level of an input image indicated by the first and second input color component signals using the second input color component signal having lower spatial frequency gain characteristics than those of the first color component signal, and the first color component signal smoothed by said smoothing means.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 6, wherein said input means generates a plurality of image signals based on different spectral characteristics.
Claim 10
Dependent Claim
18 words
An apparatus according to claim 7, wherein said input means comprises a plurality of parallel CCD line sensors.
Claim 11
Dependent Claim
26 words
An apparatus according to claim 6, wherein said smoothing means smoothes a pixel of interest using color component signals of pixels surrounding the pixel of interest.
Claim 12
Dependent Claim
30 words
An apparatus according to claim 6, wherein said judging means judges a chromatic/achromatic level of a pixel of interest using color component signals of pixels surrounding said pixel of interest.
Claim 13
Dependent Claim
52 words
An image processing apparatus comprising: a) signal generation means for generating a plurality of image signals based on different spectral characteristics; and b) processing means for executing smoothing processing of at least one of the plurality of image signals excluding a signal having lowest spatial frequency gain characteristics in a specific direction.
Claim 14
Dependent Claim
52 words
An image processing apparatus comprising: a) signal generation means for generating a plurality of image signals based on different spectral characteristics; and b) processing means for executing smoothing processing of at least one of the plurality of image signals excluding a signal having lowest spatial frequency gain characteristics in a specific direction.
Claim 15
Dependent Claim
24 words
An apparatus according to claim 11, further comprising image reading means for reading an original image and generating a plurality of color component signals.
Claim 16
Dependent Claim
31 words
An apparatus according to claim 12, wherein said image reading means comprises a plurality of parallel line sensors for generating the plurality of color component signals based on different spectral characteristics.
Claim 17
Dependent Claim
23 words
An apparatus according to claim 13, wherein the plurality of image signals based on the different spectral characteristics are three primary color signals.
Claim 18
Dependent Claim
21 words
An apparatus according to claim 14, wherein the three primary color signals are R (red), G (green), and B (blue) signals.
Claim 19
Dependent Claim
25 words
An apparatus according to claim 14, wherein the plurality of image signals based on the different spectral characteristics include at least a W (white) signal.
Claim 20
Dependent Claim
20 words
An apparatus according to claim 11, wherein the specific direction is a sub scan direction with respect to an original.
Claim 21
Dependent Claim
20 words
An apparatus according to claim 11, wherein the specific direction is a main scan direction with respect to an original.
Claim 22
Dependent Claim
23 words
An apparatus according to claim 11, wherein said image signal generation means comprises image reading means which can vary a read magnification factor.
Claim 23
Dependent Claim
22 words
An apparatus according to claim 19, wherein said processing means varies characteristics of said smoothing processing according to said read magnification factor.
Claim 24
Dependent Claim
16 words
An apparatus according to claim 20, wherein said characteristics are read out from a nonvolatile memory.
Claim 25
Dependent Claim
53 words
An image processing apparatus comprising: a) signal generation means for generating a plurality of image signals based on different spectral characteristics; and b) calculation means for executing an interpolation calculation of at least one of the plurality of image signals excluding a signal having lowest spatial frequency gain characteristics in a specific direction.
Claim 26
Dependent Claim
53 words
An image processing apparatus comprising: a) signal generation means for generating a plurality of image signals based on different spectral characteristics; and b) calculation means for executing an interpolation calculation of at least one of the plurality of image signals excluding a signal having lowest spatial frequency gain characteristics in a specific direction.
Claim 27
Dependent Claim
24 words
An apparatus according to claim 22, further comprising image reading means for reading an original image and generating a plurality of color component signals.
Claim 28
Dependent Claim
31 words
An apparatus according to claim 23, wherein said image reading means comprises a plurality of parallel line sensors for generating the plurality of color component signals based on different spectral characteristics.
Claim 29
Dependent Claim
23 words
An apparatus according to claim 24, wherein the plurality of image signals based on the different spectral characteristics are three primary color signals.
Claim 30
Dependent Claim
21 words
An apparatus according to claim 25, wherein the three primary color signals are R (red), G (green), and B (blue) signals.
Claim 31
Dependent Claim
25 words
An apparatus according to claim 25, wherein the plurality of image signals based on the different spectral characteristics include at least a W (white) signal.
Claim 32
Dependent Claim
20 words
An apparatus according to claim 22, wherein the specific direction is a sub scan direction with respect to an original.
Claim 33
Dependent Claim
20 words
An apparatus according to claim 22, wherein the specific direction is a main scan direction with respect to an original.
Claim 34
Dependent Claim
23 words
An apparatus according to claim 22, wherein said image signal generation means comprises image reading means which can vary a read magnification factor.
Claim 35
Dependent Claim
22 words
An apparatus according to claim 22, wherein said processing means varies characteristics of said interpolation calculation according to said read magnification factor.
Claim 36
Dependent Claim
16 words
An apparatus according to claim 31, wherein said characteristics are read out from a nonvolatile memory.
Claim 37
Dependent Claim
70 words
An image processing apparatus comprising: a) input means for inputting a plurality of color component signals; b) first processing means for executing processing for the plurality of color component signals input by said input means according to spectral frequency gain characteristics; and c) second processing means for executing processing for the plurality of color component signals input by said input means according to an output from said first processing means.
Claim 38
Dependent Claim
70 words
An image processing apparatus comprising: a) input means for inputting a plurality of color component signals; b) first processing means for executing processing for the plurality of color component signals input by said input means according to spectral frequency gain characteristics; and c) second processing means for executing processing for the plurality of color component signals input by said input means according to an output from said first processing means.
Claim 39
Dependent Claim
21 words
An apparatus according to claim 33, wherein said input means generates a plurality of image signals based on different spectral characteristics.
Claim 40
Dependent Claim
18 words
An apparatus according to claim 34, wherein said input means comprises a plurality of parallel CCD line sensors.
Claim 41
Dependent Claim
24 words
An apparatus according to claim 33, wherein said first processing means includes smoothing means for smoothing some of said plurality of color component signals.
Claim 42
Dependent Claim
23 words
An apparatus according to claim 33, wherein said first processing means includes judging means for judging a chromatic/achromatic level in units of pixels.
Claim 43
Dependent Claim
32 words
An apparatus according to claim 37, wherein said second processing means performs recording of a black pixel using only a black recording member according to the judgement result of said judging means.
References Cited (Backward Citations)
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