EP0322680A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of and apparatus for correcting color pattern in multicolor process
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1988-12-16
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Granted: —
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Expires: 2008-12-16
Abstract
Abstract A multicolor print (40) is overprinted with first and second print patterns (41, 42) if no modification were performed on those print patterns. An overlapping portion (42) of the first print pattern (41) is reduced to a reduced overlapping portion (46). A linkage portion (45) is formed between the reduced overlapping portion (46) and a residual portion (44) of the first print pattern (41). A modified first print pattern consists of the portions (44, 45, 46). The shapes of the patterns and the portions are expressed by binary data for each pixel and the shape modification to obtain the modified first print pattern is performed through logical processing.
Inventors
- 👤 Hisayuki Dainippon Screen Mfg.Co. Ltd. Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/58
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
289 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining a third binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern, (d) executing logical processing on said third binary image data, thereby to obtain a fourth binary image data expressing a modified overlapping area which is reduced all around by a prescribed width from said overlapping area, (e) modifying said first color pattern data on the basis of said fourth binary image data, thereby to obtain a modified first color pattern data expressing said modified overlapping area with said first color, and (f) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 2
Independent Claim
289 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining a third binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern, (d) executing logical processing on said third binary image data, thereby to obtain a fourth binary image data expressing a modified overlapping area which is reduced all around by a prescribed width from said overlapping area, (e) modifying said first color pattern data on the basis of said fourth binary image data, thereby to obtain a modified first color pattern data expressing said modified overlapping area with said first color, and (f) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 3
Dependent Claim
48 words
A method in accordance with claim 1, wherein said logical processing is performed with a pixel cell consisting of plurality of pixels in a manner that binary data of a central portion of said pixel cell is replaced by a result of logical operation in said pixel cell.
Claim 4
Dependent Claim
52 words
A method in accordance with claim 2, wherein a value of said third binary image data is "1" at the inside of said overlapping area and "0" at the outside of said overlapping area, and said logical operation is AND operation among binary data of all pixels included in said pixel cell.
Claim 5
Dependent Claim
46 words
A method in accordance with claim 3, wherein said step (a) is performed through comparing respective colors of said color patterns with each other, thereby to determine a relatively light color to be said first color and a relatively deep color to be said second color.
Claim 6
Dependent Claim
34 words
A method in accordance with claim 3, wherein said step (a) is performed by an operator to specify said first and second color patterns regardless of relative deepnesses of said first and second colors.
Claim 7
Independent Claim
365 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining third and fourth binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern and said fourth binary image data expresses a residual area of said first color pattern other than said overlapping area, (d) executing a first type of logical processing on said third binary image data, thereby to obtain a fifth binary image data expressing a modified overlapping area which is reduced all around by a prescribed width from said overlapping area, (e) obtaining a sixth binary image data on the basis of said third and fourth binary iamge data, said sixth binary image data expressing a linkage area which is positioned between said residual area and said modified overlapping area, (f) modifying said first color pattern data on the basis of said fifth and sixth binary image data, thereby to obtain a modified first color pattern data expressing a combination of said residual area, said modified overlapping area and said linkage area with said first color, and (g) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 8
Independent Claim
365 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining third and fourth binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern and said fourth binary image data expresses a residual area of said first color pattern other than said overlapping area, (d) executing a first type of logical processing on said third binary image data, thereby to obtain a fifth binary image data expressing a modified overlapping area which is reduced all around by a prescribed width from said overlapping area, (e) obtaining a sixth binary image data on the basis of said third and fourth binary iamge data, said sixth binary image data expressing a linkage area which is positioned between said residual area and said modified overlapping area, (f) modifying said first color pattern data on the basis of said fifth and sixth binary image data, thereby to obtain a modified first color pattern data expressing a combination of said residual area, said modified overlapping area and said linkage area with said first color, and (g) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 9
Dependent Claim
216 words
A method in accordance with claim 6, wherein said step (e) further comprises the steps of: (e-1) executing a second type of logical processing on said fourth binary image data to obtain an expanded fourth binary image data expressing an expanded residual area which is expanded all around by a second width from said residual area, (e-2) obtaining a common part binary image data as a part of said sixth binary image data on the basis of said third binary image data and said expanded fourth binary image data, said common part binary image data expressing area which is common to said overlapping area and said expanded residual area, (e-3) executing a third type of logical processing on said third binary image data to obtain a reduced third binary image data expressing a reduced overlapping area which is reduced all around by said second width from said overlapping area, and (e-4) repeating a series of said steps (e-1) through (e-3) by N times, where N is an integer, in which series said fourth binary image data, said residual area, said third binary image data and said overlapping area are assumed to be replaced by said expanded fourth binary image data, said expanded residual area, said reduced third binary image data and said reduced overlapping area, respectively.
Claim 10
Dependent Claim
21 words
A method in accordance with claim 7, wherein said second width multiplied by N is the same with said first width.
Claim 11
Dependent Claim
53 words
A method in accordance with claim 8, wherein said first, second and third types of logical processing are performed with a pixel cell consisting of plurality of pixels in manners that binary data of a central portion of said pixel cell is replaced by a result of logical operation in said pixel cell.
Claim 12
Dependent Claim
85 words
A method in accordance with claim 8, wherein a value of said binary image data is "1" at the inside of said shapes and areas and "0" at the outside of said shapes and areas, and said logical operation in said first and third types of logical processing is AND operation among binary data of all pixels included in said pixel cell, and, said logical operation in said second logical processing is OR operation among binary data of all pixels included in said pixel cell.
Claim 13
Dependent Claim
46 words
A method in accordance with claim 10, wherein said step (a) is performed through comparing respective colors of said color patterns with each other, thereby to determine a relatively light color to be said first color and a relatively deep color to be said second color.
Claim 14
Dependent Claim
34 words
A method in accordance with claim 10, wherein said step (a) is performed by an operator to specify said first and second color patterns regardless of relative deepnesses of said first and second colors.
Claim 15
Independent Claim
285 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are printed with respective colors so as to produce a multicolor print image where said respective color patterns are positioned in contact with each other at a border line, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining a third bianry image data on the basis of said first and second binary image data, said third binary image data expressing an annex area, which width along said border line is decreasing from said border line toward central part of said second color pattern, (d) modifying said first color pattern data on the basis of said third binary image data, thereby to obtain a modified first color pattern data expressing a combination of said shape of said first color pattern and said annex area with said first color, and (e) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 16
Independent Claim
285 words
A method of correcting a set of color patterns prepared for an overprinted process, in which said color patterns are printed with respective colors so as to produce a multicolor print image where said respective color patterns are positioned in contact with each other at a border line, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said method comprising the steps of: (a) specifying a first color pattern having a first color to be subjected to shape correction and a second color pattern having a second color not to be subjected to shape correction within said color patterns, (b) binarizing first and second color pattern data expressing respective shapes and colors of said first and second color patterns for each pixel, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns for each pixel, (c) obtaining a third bianry image data on the basis of said first and second binary image data, said third binary image data expressing an annex area, which width along said border line is decreasing from said border line toward central part of said second color pattern, (d) modifying said first color pattern data on the basis of said third binary image data, thereby to obtain a modified first color pattern data expressing a combination of said shape of said first color pattern and said annex area with said first color, and (e) replacing said first color pattern data with said modified first color pattern data, thereby to obtain a set of modified color pattern data which includes said modified first color pattern data in place of said first color pattern data.
Claim 17
Dependent Claim
231 words
A method in accordance with claim 13, wherein said step (c) further comprises the steps of: (c-1) executing a first type of logical processing on said first binary image data to obtain an expanded first binary image data expressing an expanded first area which is expanded all around by a prescribed width from said shape of said first color pattern, (c-2) obtaining a common part binary image data as a part of said third binary image data on the basis of said second binary image data and said expanded first binary image data, said common part binary image data expressing area which is common to said shape of said second color pattern and said expanded first area, (c-3) executing a second type of logical processing on said second binary image data to obtain a reduced second binary image data expressing a reduced second area which is reduced all around by said prescribed width from said shape of said second color pattern, and (c-4) repeating a series of said steps (c-1) through (c-3) by prescribed times, in which series said first binary image data, said shape of said first color pattern, said second binary image data and said shape of said second color pattern are assumed to be replaced by said expanded first binary image data, said expanded first area, said reduced second binary image data and said reduced second area, respectively.
Claim 18
Dependent Claim
52 words
A method in accordance with claim 14, wherein said first and second types of logical processing are performed with a pixel cell consisting of plurality of pixels in manners that binary data of a central portion of said pixel cell is replaced by a result of logical operation in said pixel cell.
Claim 19
Dependent Claim
81 words
A method in accordance with claim 15, wherein a value of said binary image data is "1" at the inside of said shapes and areas and "0" at the outside of said shapes and areas, and said logical operation in said first logical processing is OR operation among binary data of all pixels included in said pixel cell, and, said logical operation in said second logical processing is AND operation among binary data of all pixels included in said pixel cell.
Claim 20
Dependent Claim
46 words
A method in accordance with claim 16, wherein said step (a) is performed through comparing respective colors of said color patterns with each other, thereby to determine a relatively light color to be said first color and a relatively deep color to be said second color.
Claim 21
Dependent Claim
34 words
A method in accordance with claim 16, wherein said step (a) is performed by an operator to specify said first and second color patterns regardless of relative deepnesses of said first and second colors.
Claim 22
Independent Claim
227 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a first processor for obtaining a third binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern, (c) a second processor for executing logical processing on said third binary image data, thereby to obtain a fourth binary image data expressing a modified overlapping are which is reduced all around by a prescribed width from said overlapping area, and (d) a data editor for modifying said first color pattern data on the basis of said fourth binary image data, thereby to obtain a modified first color pattern data expressing said modified overlapping area with said color of said first color pattern.
Claim 23
Independent Claim
227 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a first processor for obtaining a third binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern, (c) a second processor for executing logical processing on said third binary image data, thereby to obtain a fourth binary image data expressing a modified overlapping are which is reduced all around by a prescribed width from said overlapping area, and (d) a data editor for modifying said first color pattern data on the basis of said fourth binary image data, thereby to obtain a modified first color pattern data expressing said modified overlapping area with said color of said first color pattern.
Claim 24
Independent Claim
303 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a first processor for obtaining third and fourth binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern and said fourth binary image data expresses a residual area of said first color pattern other than said overlapping area, (c) a second processor for executing logical processing on said third binary image data, thereby to obtain a fifth binary image data expressing a modified overlapping are which is reduced all around by a prescribed width from said overlapping area, (d) a third processor for obtaining a sixth binary image data on the basis of said third and fourth binary image data, said sixth binary image data expressing a linkage area which is positioned between said residual area and said modified overlapping area, and (e) a data editor for modifying said first color pattern data on the basis of said fifth and sixth binary image data, thereby to obtain a modified first color pattern data expressing a combination of said residual area, said modified overlapping area and said linkage area with said color of said first color pattern.
Claim 25
Independent Claim
303 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are overprinted with respective colors so as to produce a multicolor print image, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a first processor for obtaining third and fourth binary image data on the basis of said first and second binary image data, where said third binary image data expresses an overlapping area on which said second color pattern is overlapped with said first color pattern and said fourth binary image data expresses a residual area of said first color pattern other than said overlapping area, (c) a second processor for executing logical processing on said third binary image data, thereby to obtain a fifth binary image data expressing a modified overlapping are which is reduced all around by a prescribed width from said overlapping area, (d) a third processor for obtaining a sixth binary image data on the basis of said third and fourth binary image data, said sixth binary image data expressing a linkage area which is positioned between said residual area and said modified overlapping area, and (e) a data editor for modifying said first color pattern data on the basis of said fifth and sixth binary image data, thereby to obtain a modified first color pattern data expressing a combination of said residual area, said modified overlapping area and said linkage area with said color of said first color pattern.
Claim 26
Independent Claim
218 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are printed with respective colors so as to produce a multicolor print image where said respective color patterns are positioned in contact with each other at a border line, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a data processor for obtaining a third bianry image data on the basis of said first and second binary image data, said third binary image data expressing an annex area, which width along said border line is decreasing from said border line toward central part of said second color pattern, (c) a data editor for modifying said first color pattern data on the basis of said third bianary image data, thereby to obtain a modified first color pattern data expressing a combination of said shape of said first color pattern and said annex area with said color of said first color pattern.
Claim 27
Independent Claim
218 words
An apparatus for correcting a set of color patterns prepared for an overprinted process, in which said color patterns are printed with respective colors so as to produce a multicolor print image where said respective color patterns are positioned in contact with each other at a border line, through correcting a set of color pattern data expressing respective shapes and colors of said color patterns, said apparatus comprising: (a) a data converter for binarizing first and second color pattern data expressing respective shapes and colors of first and second color patterns within said color patterns, thereby to obtain first and second binary image data expressing said respective shapes of said first and second color patterns, (b) a data processor for obtaining a third bianry image data on the basis of said first and second binary image data, said third binary image data expressing an annex area, which width along said border line is decreasing from said border line toward central part of said second color pattern, (c) a data editor for modifying said first color pattern data on the basis of said third bianary image data, thereby to obtain a modified first color pattern data expressing a combination of said shape of said first color pattern and said annex area with said color of said first color pattern.
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