CN102082894B - Equipment calibration method and output device - Google Patents
Equipment calibration method and output device Download PDFInfo
- Publication number
- CN102082894B CN102082894B CN 200910241294 CN200910241294A CN102082894B CN 102082894 B CN102082894 B CN 102082894B CN 200910241294 CN200910241294 CN 200910241294 CN 200910241294 A CN200910241294 A CN 200910241294A CN 102082894 B CN102082894 B CN 102082894B
- Authority
- CN
- China
- Prior art keywords
- value
- color data
- cmy
- data group
- lab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000013507 mapping Methods 0.000 claims description 61
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 238000007639 printing Methods 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012512 characterization method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Images
Landscapes
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Processing (AREA)
Abstract
The invention discloses an equipment calibration method and an output device, relating to a color management technology. The equipment calibration method comprises the steps: converting every first color data group in a file to a second color data group according to a first corresponding relation table of the stored first color data groups and second color data groups, wherein the second color data groups are the color data groups corresponding to target objective vision chromatic values which is necessary to output by the first color data groups, in a second corresponding relation table of actual objective vision chromatic values and color data groups, and the second corresponding relation table derives from a color target diagram output through measurement equipment; and outputting the file according to the second color data groups. The color data groups are directly used for calibration, so the correlation of various parameters is taken into consideration, and the equipment calibration efficiency, the operation easiness and the calibration effect are enhanced.
Description
Technical field
The present invention relates to Color Management Technology, relate in particular to a kind of equipment Alignment technology in the Color Management Technology.
Background technology
Along with the development of colour demonstration, digital printing and the technology such as digital printed, color management show and print production in effect more and more important.Color is the core of display and print quality control, and in the whole production management of printing enterprise, color management is in Central Position.Printing color management is set about introducing and implementing by increasing printing enterprise, and expectation forms the higher Printing Production Systems of efficient by printing color management and cooperating of modern printing new technology, improves the competitiveness of press quality and enterprise.
Color management generally is divided into three steps: equipment Alignment, device characterization, color conversion.Equipment Alignment refers to each equipment in the print production flow process is proofreaied and correct, and the normalization process parameter makes it be operated in stable state; Device characterization refers under the prerequisite that equipment is calibrated, and measures color datas and generates the color characteristic file of equipment, the colour gamut feature of recording equipment by various software and hardware instruments.Color conversion is to utilize color management module to pass through device independent color space (Lab, XYZ etc.) to carry out the conversion of device dependent color spaces (CMYK, RGB etc.), realizes the consistency of exporting to the whole process color of printing from before printing.
Equipment Alignment and device characterization are the keys of effectively implementing color management.Equipment Alignment is just to the simple correction of each equipment, but to the once comprehensive calibration of print production technique and process, is standardization and the standardization of print production technological parameter.
Traditional equipment Alignment is based on all that 4 curves that correspond respectively to CMYK carry out, owing to adjusting based on 4 independent curves, so make for CMYK in output and also to process respectively, and the correlation that can't consider CMYK is adjusted respectively and processed to 4 curves, for example, for CMYK=[30,50,50,50] and CMYK=[30,60,60,60] in, when C curve was adjusted, the adjustment at the C=30 place was identical, although and in fact same C=30, but because the difference of MYK value, the adjustment of C might be different, the drawback that Here it is adjusts based on 4 irrelevant curves, and based on the calibration of 4 curves because both needed to consider level problem, need again to consider the grey balance problem, so the effect that needs the certain experience of operating personnel just can obtain.
And the development along with printing and printing technique, the particularly development of digital printing, used printing ink has been not limited to CMYK four looks, in order to pursue more high-quality printing and printing effect, the application that has added shallow China ink, the application of other look China ink such as more particularly orange, green, this just has higher requirement to equipment Alignment, and originally can not adapt to equipment Alignment requirement under the complex situations like this based on the equipment Alignment mode of curve.
Summary of the invention
The embodiment of the invention provides a kind of equipment calibration method and output device, to improve efficient, ease for operation and the calibration effect of equipment Alignment.
A kind of equipment calibration method comprises:
Each first color data group in the file is converted to the second color data group according to the first color data group of storage and the first mapping table of the second color data group; Described the second color data group is the objective vision chromatic value of target that should export of described the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and described the second mapping table is that the look target figure by measuring equipment output obtains;
Export described file according to described the second color data group.
Further, the preparation method of described the first mapping table is specially:
Measure the look target figure that output equipment to be calibrated is exported, obtain actual objective vision chromatic value corresponding to each color data group;
The actual objective vision chromatic value corresponding according to each color data group generates described the second mapping table;
To each the first color data group, determine the objective vision chromatic value of its target that should export;
Determine the second color data group of the objective vision chromatic value of target correspondence in described the second mapping table of each the first color data group, and described the first color data group and described the second color data group correspondence are added in described the first mapping table.
Better, the objective vision chromatic value of target that described the first color data group should be exported is specially: the desirable objective vision chromatic value that described the first color data group is corresponding, perhaps described equipment can export near the objective vision chromatic value of desirable objective vision chromatic value corresponding to described the first color data group.
Further, described color data group is specially CMY value or CMYK value or CMYKGO value, and described objective vision chromatic value is specially the Lab value.
Further, when described color data group was specially the CMY value, the method that obtains the target Lab value of a described CMY value specifically comprised:
When a described CMY value is white point and stain, determine that its target Lab value is identical with the desirable Lab value of a described CMY value;
When M value and Y value are zero in the described CMY value, obtain in the actual Lab space, satisfying M value and Y value is that zero maximum point and the C value of a value is 1, M value and Y value are 1 corresponding point, and be 1 in described a value maximum point and C value, M value and Y value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding a value near the desirable a value of a described CMY value in the straight line that consists of of zero corresponding point;
When C value and Y value are zero in the described CMY value, obtain in the actual Lab space, satisfying C value and Y value is that zero maximum point and the M value of a value is 1, C value and Y value are 1 corresponding point, and be 1 in described a value maximum point and M value, C value and Y value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding a value near the desirable a value of a described CMY value in the straight line that consists of of zero corresponding point;
When C value and M value are zero in the described CMY value, obtain in the actual Lab space, satisfying C value and M value is that zero maximum point and the Y value of b value is 1, C value and M value are 1 corresponding point, and be 1 in described b value maximum point and Y value, C value and M value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding b value near the desirable b value of a described CMY value in the straight line that consists of of zero corresponding point;
The C value is zero in the described CMY value, when M value and Y value equate, in described the second mapping table, keeping the C value is zero, adjusting M value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
The M value is zero in the described CMY value, when C value and Y value equate, in described the second mapping table, keeping the M value is zero, adjusting C value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
Y value is zero in the described CMY value, when C value and M value equate, in described the second mapping table, keeping Y value is zero, adjusting C value and M value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
When C value, M value or Y value one are zero in the described CMY value, be zero according to the C value respectively, M value and Y value equate, the M value is zero, C value and Y value equate and Y value is zero, Lch space hue angle adjusted value when C value and M value equate is adjusted the Lch space hue angle in Lch value corresponding to a described CMY value, determines that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a described CMY value;
When C value, M value and Y value are all non-vanishing in the described CMY value, C value M value in this CMY value and Y value are all deducted value minimum in C value M value and the Y value, again according to C value, M value or Y value one be zero or its two be that zero method obtains Lch space hue angle adjustment amount, adjust Lch space hue angle in Lch value corresponding to a described CMY value according to the Lch space hue angle adjustment amount that obtains, determine that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a described CMY value;
When C value, M value and Y value satisfy grey axis data condition in the described CMY value, find one group of CMY value in the grey axle in actual Lab space, make its corresponding Lab value near the desirable Lab value of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of described CMY value correspondence.
Better, described color data group is specially CMYK value or CMYKGO value.
Corresponding a kind of output device comprises:
Be used for each first color data group of file is converted to according to the first mapping table of the first color data group of storing and the second color data group the unit of the second color data group; Described the second color data group is the objective vision chromatic value of target that should export of described the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and described the second mapping table is that the look target figure by measuring equipment output obtains;
Be used for exporting according to described the second color data group the unit of described file.
Further, described output device also comprises:
Be used for measuring the look target figure that output equipment to be calibrated is exported, obtain the unit of actual objective vision chromatic value corresponding to each color data group;
Be used for the actual objective vision chromatic value corresponding according to each color data group, generate the unit of described the second mapping table;
Be used for each the first color data group, determine the unit of the objective vision chromatic value of its target that should export;
Be used for to determine the objective vision chromatic value of target of each the first color data group in the second color data group corresponding to described the second mapping table, and add described the first color data group and described the second color data group correspondence in described the first mapping table unit.
The embodiment of the invention provides a kind of equipment calibration method and output device, set up the mapping table of a color data group and actual objective vision chromatic value by the look target figure that calibrates front output, the actual objective vision chromatic value that equates by searching the objective vision chromatic value of the target that to export with each color data group again, the corresponding color data group of actual objective vision chromatic value that should equate with the objective vision chromatic value of target that primitive color data group should be exported in the acquisition mapping table is as the output color data group of primitive color data group, and with each original data set and the vertical corresponding relation of output color data establishment, showing, when printing waits output, first according to the corresponding relation between the color data group of primitive color data group and output, the color data class value of original document is converted to the color data group of output, show again, the outputs such as printing, thereby obtain comparatively ideal output effect, reached the purpose of equipment Alignment, because directly using the color data group calibrates, consider the correlation between the parameters, improved equipment Alignment efficient, ease for operation and calibration effect.
Description of drawings
Fig. 1 is the method flow diagram that carries out equipment Alignment in the embodiment of the invention;
Fig. 2 is the method flow diagram that obtains the first mapping table in the embodiment of the invention;
Fig. 3 is the curve chart of a value and the b value of desirable grey axle in the embodiment of the invention;
Fig. 4 a is the curve chart that carries out the front a value of equipment Alignment and b value in the embodiment of the invention;
Fig. 4 b is the curve chart that carries out a value and b value behind the equipment Alignment in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of equipment calibration method and output device, before calibration equipment, output look target figure, by measuring the objective vision chromatic value of look target figure, obtain the mapping table of the second color data group and actual objective vision chromatic value, again for each the first color data group, search the actual objective vision chromatic value that the objective vision chromatic value of the target that should export with this color data group equates, obtain in the mapping table corresponding the second color data group of Lab measured value that equates with target Lab value that the first color data group should be exported, this the first color data group and this second color data group are mapped, form the color data group mapping table of the first color data group and the second color data group, like this, when carrying out file output, with the color data group in the file as the first color data group, be converted to after the second color data group according to the second color data group output file by color data group mapping table, the objective vision chromatic value of target that the objective vision chromatic value of resulting like this output just just should be exported for the first color data group in the file, thus reached the purpose of equipment Alignment.
As shown in Figure 1, the equipment calibration method that provides of the embodiment of the invention comprises the steps:
Step S101, each the first color data group in the file is converted to the second color data group according to the first mapping table of the first color data group of storing and the second color data group;
Step S102, according to the second color data group output file.
Wherein, the color data group can be CMY, CMYK or CMYGO, the second color data group is the objective vision chromatic value of target that should export of the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and the second mapping table is that the look target figure by measuring equipment output obtains.
As shown in Figure 2, the generation method of the first mapping table comprises the steps:
Step S201, use output equipment output look target figure to be calibrated;
Step S202, measure look target figure by measuring equipment and obtain actual objective vision chromatic value corresponding to each color data group;
The second mapping table of step S203, the actual objective vision chromatic value of generation and the second color data group;
In this second mapping table, comprised in the complete objective vision chromatic value space corresponding relation of the actual objective vision chromatic value of all in accuracy rating and the second color data group.
Step S204, to each the first color data group, determine the objective vision chromatic value of its target that should export;
Step S205, the objective vision chromatic value of target corresponding second color data group in the second mapping table of determining each the first color data group, and the second color data group correspondence of each first color data group and its correspondence added in the first mapping table.
In step S204, according to different equipment, the objective vision chromatic value of the target of each color data group is different, for more satisfactory equipment, can export the desirable objective vision chromatic value that each color data group should be exported, in this equipment, the objective vision chromatic value of the target of each color data group is exactly the desirable objective vision chromatic value that each color data group should be exported so; But for most of equipment, possibly can't export the desirable objective vision chromatic value that some color data group should be exported, so this moment, the objective vision chromatic value of the target of these color data groups can be chosen in the objective vision chromatic value that this equipment can export one group of objective vision chromatic value near the objective vision chromatic value of ideal, when choosing, can be in the mapping table of the objective vision chromatic value of reality and the second color data group, by on the basis of the first color data group, constantly adjusting color data values, obtain actual objective vision chromatic value, and make it as far as possible near the desirable objective vision chromatic value of the first color data group, the objective vision chromatic value of target that in the mapping table of the objective vision chromatic value of reality and the second color data group, is the first color data group near one group of objective vision chromatic value of the objective vision chromatic value of this ideal.
Take the color data group as CMY, objective vision chromatic value is example when being Lab, when obtaining target Lab value corresponding to a CMY value, and can be by following several situation discussion:
When the one CMY value is white point and stain, determine that its target Lab value is identical with the desirable Lab value of a CMY value;
When M value and Y value are zero in the one CMY value, obtain in the actual Lab space, satisfying M value and Y value is that zero maximum point and the C value of a value is 1, M value and Y value are 1 corresponding point, and be 1 in a value maximum point and C value, M value and Y value are when finding one group of CMY value to make its corresponding a value near the desirable a value of a CMY value in the straight line that consists of of zero corresponding point, to determine that the Lab value of this group CMY value correspondence is the target Lab value of a CMY value;
When C value and Y value are zero in the one CMY value, obtain in the actual Lab space, satisfying C value and Y value is that zero maximum point and the M value of a value is 1, C value and Y value are 1 corresponding point, and be 1 in a value maximum point and M value, C value and Y value are when finding one group of CMY value to make its corresponding a value near the desirable a value of a CMY value in the straight line that consists of of zero corresponding point, to determine that the Lab value of this group CMY value correspondence is the target Lab value of a CMY value;
When C value and M value are zero in the one CMY value, obtain in the actual Lab space, satisfying C value and M value is that zero maximum point and the Y value of b value is 1, C value and M value are 1 corresponding point, and be 1 in b value maximum point and Y value, C value and M value are when finding one group of CMY value to make its corresponding b value near the desirable b value of a CMY value in the straight line that consists of of zero corresponding point, to determine that the Lab value of this group CMY value correspondence is the target Lab value of a CMY value;
The C value is zero in the one CMY value, when M value and Y value equate, in the second mapping table, keeping the C value is zero, adjusting M value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a CMY value;
The M value is zero in the one CMY value, when C value and Y value equate, in the second mapping table, keeping the M value is zero, adjusting C value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a CMY value;
Y value is zero in the one CMY value, when C value and M value equate, in the second mapping table, keeping Y value is zero, adjusting C value and M value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a CMY value;
When C value, M value or Y value one are zero in the one CMY value, be zero according to the C value respectively, M value and Y value equate, the M value is zero, C value and Y value equate and Y value is zero, Lch space hue angle adjusted value when C value and M value equate is adjusted the Lch space hue angle in Lch value corresponding to a CMY value, determines that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a CMY value;
When C value, M value and Y value are all non-vanishing in the one CMY value, C value M value in this CMY value and Y value are all deducted value minimum in C value M value and the Y value, again according to C value, M value or Y value one be zero or its two be that zero method obtains Lch space hue angle adjustment amount, adjust Lch space hue angle in Lch value corresponding to a CMY value according to the Lch space hue angle adjustment amount that obtains, determine that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a CMY value;
When C value, M value and Y value satisfy grey axis data condition in the one CMY value, find one group of CMY value in the grey axle in actual Lab space, make its corresponding Lab value near the desirable Lab value of a CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of CMY value correspondence.
Make it reach G7 ash axle standard as example take grey axis calibration, if print the machine calibration, the pass of cyan Cyan is among a value in the so desirable Lab value, b value and the CMY:
A=a
Paper* (100-Cyan)/100, b=b
Paper* (100-Cyan)/100, and wherein, a
PaperAnd b
PaperBe a value and the b value for the hard copy body of printing.
Desirable a value and the b value regularity of distribution as shown in Figure 3, the absolute value of a value and b value is reduced to shadow gradually by high light.
Before carrying out equipment Alignment, obtain the mapping table of actual Lab value and the second color data group on the grey axle by the look target figure that prints, partial data is as follows:
The mapping table of actual Lab value and color data group on the front grey axle of table 1 equipment Alignment
| C％ | M％ | Y％ | L* | a* | b* |
| 0 | 0 | 0 | 94.15 | 1.79 | -5.91 |
| 1.96 | 1.18 | 1.18 | 93.11 | 1.74 | -5.6 |
| 3.92 | 2.75 | 2.75 | 92.1 | 1.25 | -5.22 |
| 5.88 | 4.31 | 4.31 | 91.01 | 1.33 | -5.67 |
| 7.84 | 5.49 | 5.49 | 90.17 | 1.07 | -5.7 |
| 10.2 | 7.45 | 7.45 | 88.91 | 1.04 | -6.07 |
| 14.9 | 10.98 | 10.98 | 86.05 | 0.55 | -5.69 |
| 20 | 14.9 | 14.9 | 83.28 | -0.31 | -5.36 |
| 25.1 | 18.82 | 18.82 | 80.18 | -1.31 | -4.79 |
| 30.2 | 23.14 | 23.14 | 76.77 | -2.65 | -3.57 |
| 34.9 | 27.06 | 27.06 | 73.66 | -3.1 | -2.51 |
| 40 | 31.37 | 31.37 | 70.42 | -4.25 | -1.68 |
| 45.1 | 35.69 | 35.69 | 66.35 | -5.65 | -0.31 |
| 49.8 | 40 | 40 | 63.32 | -6.49 | 1.12 |
| 54.9 | 45.1 | 45.1 | 59.82 | -6.84 | 2.55 |
| 60 | 50.2 | 50.2 | 55.99 | -6.66 | 4.91 |
| 65.1 | 55.29 | 55.29 | 52.32 | -6.67 | 6.21 |
| 69.8 | 60.39 | 60.39 | 48.51 | -6.34 | 6.88 |
| 74.9 | 65.88 | 65.88 | 43.16 | -4.4 | 6.54 |
| 80 | 71.76 | 71.76 | 37.6 | -3.1 | 4.45 |
| 85.1 | 78.04 | 78.04 | 31.71 | -2.79 | 2.84 |
| 89.8 | 84.31 | 84.31 | 25 | -1.52 | 2.47 |
| 94.9 | 92.16 | 92.16 | 18.72 | 1.71 | 1.01 |
| 98.04 | 96.86 | 96.86 | 14.77 | 2.67 | -0.12 |
| 100 | 100 | 100 | 13.85 | 3.17 | -0.25 |
After the method that provides in using the embodiment of the invention is carried out equipment Alignment, obtain the Lab value after the calibration and the mapping table of color data group on the grey axle by the look target figure that prints, partial data is as follows:
The mapping table of actual Lab value and color data group on the front grey axle of table 2 equipment Alignment
The a value of drawing according to table 1 and table 2 and the grey axis data distribution map of b value shown in Fig. 4 a and Fig. 4 b, can significantly find out from figure respectively, carries out curve behind the equipment Alignment among Fig. 4 b near the ideal curve among Fig. 3.
The embodiment of the invention is also corresponding to provide a kind of output device, comprising:
Be used for each first color data group of file is converted to according to the first mapping table of the first color data group of storing and the second color data group the unit of the second color data group; Described the second color data group is the objective vision chromatic value of target that should export of described the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and described the second mapping table is that the look target figure by measuring equipment output obtains;
Be used for exporting according to described the second color data group the unit of described file.
This device can be the display devices such as display, also can be the printing equipments such as printer, printing machine.
The embodiment of the invention provides a kind of equipment calibration method and output device, set up the mapping table of a color data group and actual objective vision chromatic value by the look target figure that calibrates front output, the actual objective vision chromatic value that equates by searching the objective vision chromatic value of the target that to export with each color data group again, the corresponding color data group of actual objective vision chromatic value that should equate with the objective vision chromatic value of target that primitive color data group should be exported in the acquisition mapping table is as the output color data group of primitive color data group, and with each original data set and the vertical corresponding relation of output color data establishment, showing, when printing waits output, first according to the corresponding relation between the color data group of primitive color data group and output, the color data class value of original document is converted to the color data group of output, show again, the outputs such as printing, thereby obtain comparatively ideal output effect, reached the purpose of equipment Alignment, because directly using the color data group calibrates, consider the correlation between the parameters, improved equipment Alignment efficient, ease for operation and calibration effect.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1. an equipment calibration method is characterized in that, comprising:
Each first color data group in the file is converted to the second color data group according to the first color data group of storage and the first mapping table of the second color data group; Described the second color data group is the objective vision chromatic value of target that should export of described the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and described the second mapping table is that the look target figure by measuring equipment output obtains;
Export described file according to described the second color data group;
The preparation method of described the first mapping table is specially:
Measure the look target figure that output equipment to be calibrated is exported, obtain actual objective vision chromatic value corresponding to each color data group;
The actual objective vision chromatic value corresponding according to each color data group generates described the second mapping table;
To each the first color data group, determine the objective vision chromatic value of its target that should export;
Determine the second color data group of the objective vision chromatic value of target correspondence in described the second mapping table of each the first color data group, and described the first color data group and described the second color data group correspondence are added in described the first mapping table.
2. the method for claim 1, it is characterized in that, the objective vision chromatic value of target that described the first color data group should be exported is specially: the desirable objective vision chromatic value that described the first color data group is corresponding, perhaps described equipment can export near the objective vision chromatic value of desirable objective vision chromatic value corresponding to described the first color data group.
3. method as claimed in claim 2 is characterized in that, described color data group is specially CMY value or CMYK value or CMYKGO value, and described objective vision chromatic value is specially the Lab value.
4. method as claimed in claim 3 is characterized in that, when described color data group was specially the CMY value, the method that obtains the target Lab value of a described CMY value specifically comprised:
When a described CMY value is white point and stain, determine that its target Lab value is identical with the desirable Lab value of a described CMY value;
When M value and Y value are zero in the described CMY value, obtain in the actual Lab space, satisfying M value and Y value is that zero maximum point and the C value of a value is 1, M value and Y value are 1 corresponding point, and be 1 in described a value maximum point and C value, M value and Y value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding a value near the desirable a value of a described CMY value in the straight line that consists of of zero corresponding point;
When C value and Y value are zero in the described CMY value, obtain in the actual Lab space, satisfying C value and Y value is that zero maximum point and the M value of a value is 1, C value and Y value are 1 corresponding point, and be 1 in described a value maximum point and M value, C value and Y value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding a value near the desirable a value of a described CMY value in the straight line that consists of of zero corresponding point;
When C value and M value are zero in the described CMY value, obtain in the actual Lab space, satisfying C value and M value is that zero maximum point and the Y value of b value is 1, C value and M value are 1 corresponding point, and be 1 in described b value maximum point and Y value, C value and M value are that the Lab value of determining this group CMY value correspondence is the target Lab value of a described CMY value when finding one group of CMY value to make its corresponding b value near the desirable b value of a described CMY value in the straight line that consists of of zero corresponding point;
The C value is zero in the described CMY value, when M value and Y value equate, in described the second mapping table, keeping the C value is zero, adjusting M value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
The M value is zero in the described CMY value, when C value and Y value equate, in described the second mapping table, keeping the M value is zero, adjusting C value and Y value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
Y value is zero in the described CMY value, when C value and M value equate, in described the second mapping table, keeping Y value is zero, adjusting C value and M value searches, until find one group of CMY value to make its Lch space hue angle near the desirable Lch space hue angle of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of a described CMY value;
When C value, M value or Y value one are zero in the described CMY value, be zero according to the C value respectively, M value and Y value equate, the M value is zero, C value and Y value equate and Y value is zero, Lch space hue angle adjusted value when C value and M value equate is adjusted the Lch space hue angle in Lch value corresponding to a described CMY value, determines that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a described CMY value;
When C value, M value and Y value are all non-vanishing in the described CMY value, C value M value in this CMY value and Y value are all deducted value minimum in C value M value and the Y value, again according to C value, M value or Y value one be zero or its two be that zero method obtains Lch space hue angle adjustment amount, adjust Lch space hue angle in Lch value corresponding to a described CMY value according to the Lch space hue angle adjustment amount that obtains, determine that the Lab value behind the hue angle of adjustment Lch space is the target Lab value of a described CMY value;
When C value, M value and Y value satisfy grey axis data condition in the described CMY value, find one group of CMY value in the grey axle in actual Lab space, make its corresponding Lab value near the desirable Lab value of a described CMY value, determine that Lab value corresponding to this group CMY value is the target Lab value of described CMY value correspondence.
5. an output device is characterized in that, comprising:
Be used for each first color data group of file is converted to according to the first mapping table of the first color data group of storing and the second color data group the unit of the second color data group; Described the second color data group is the objective vision chromatic value of target that should export of described the first color data group corresponding color data group in the second mapping table of the objective vision chromatic value of reality and color data group, and described the second mapping table is that the look target figure by measuring equipment output obtains;
Be used for exporting according to described the second color data group the unit of described file;
Be used for measuring the look target figure that output equipment to be calibrated is exported, obtain the unit of actual objective vision chromatic value corresponding to each color data group;
Be used for the actual objective vision chromatic value corresponding according to each color data group, generate the unit of described the second mapping table;
Be used for each the first color data group, determine the unit of the objective vision chromatic value of its target that should export;
Be used for to determine the objective vision chromatic value of target of each the first color data group in the second color data group corresponding to described the second mapping table, and add described the first color data group and described the second color data group correspondence in described the first mapping table unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910241294 CN102082894B (en) | 2009-11-27 | 2009-11-27 | Equipment calibration method and output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910241294 CN102082894B (en) | 2009-11-27 | 2009-11-27 | Equipment calibration method and output device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102082894A CN102082894A (en) | 2011-06-01 |
| CN102082894B true CN102082894B (en) | 2013-01-23 |
Family
ID=44088638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910241294 Expired - Fee Related CN102082894B (en) | 2009-11-27 | 2009-11-27 | Equipment calibration method and output device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102082894B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848747B (en) * | 2011-06-28 | 2015-02-25 | 北大方正集团有限公司 | Recalibration method and device for ink-jet printing equipment |
| CN103873736B (en) * | 2012-12-17 | 2017-03-22 | 北大方正集团有限公司 | Color closed-loop correction method and system based on multi-dimensional table |
| CN104553302B (en) * | 2013-10-17 | 2017-01-04 | 北大方正集团有限公司 | A kind of grey balance calibration steps and device |
| CN103963453B (en) * | 2014-04-21 | 2016-07-06 | 杭州电子科技大学 | A kind of printing grey balance pre-setting method |
| DE102016217075A1 (en) * | 2015-10-06 | 2017-04-06 | Heidelberger Druckmaschinen Ag | Method for creating a preset characteristic |
| CN106937018B (en) * | 2017-01-12 | 2019-03-05 | 浙江大学 | The color mapping method of textile inkjet printing and dyeing is used for based on RBF neural |
| CN107395919B (en) * | 2017-07-06 | 2019-05-28 | 杭州电子科技大学 | A method of digital printing color correction is realized by modification characteristic file |
| CN111510580A (en) * | 2020-05-14 | 2020-08-07 | 佛山市阿瑞斯陶瓷科技有限公司 | Ceramic color calibration method and device, computer equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020051159A1 (en) * | 2000-10-31 | 2002-05-02 | Fuji Photo Film Co., Ltd. | Color reproduction characteristic correction method |
| US20030202197A1 (en) * | 2002-04-30 | 2003-10-30 | Canon Kabushiki Kaisha | Color processing apparatus and method and image processing apparatus |
| CN1607521A (en) * | 2003-10-14 | 2005-04-20 | 微软公司 | Color management system that enables dynamic balancing of performance with flexibility |
| CN1770816A (en) * | 2004-09-09 | 2006-05-10 | 国际商业机器公司 | Method and apparatus for efficient processing of color conversion |
| CN101163193A (en) * | 2006-10-12 | 2008-04-16 | 三星电子株式会社 | System, medium, and method calibrating gray data |
-
2009
- 2009-11-27 CN CN 200910241294 patent/CN102082894B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020051159A1 (en) * | 2000-10-31 | 2002-05-02 | Fuji Photo Film Co., Ltd. | Color reproduction characteristic correction method |
| US20030202197A1 (en) * | 2002-04-30 | 2003-10-30 | Canon Kabushiki Kaisha | Color processing apparatus and method and image processing apparatus |
| CN1607521A (en) * | 2003-10-14 | 2005-04-20 | 微软公司 | Color management system that enables dynamic balancing of performance with flexibility |
| CN1770816A (en) * | 2004-09-09 | 2006-05-10 | 国际商业机器公司 | Method and apparatus for efficient processing of color conversion |
| CN101163193A (en) * | 2006-10-12 | 2008-04-16 | 三星电子株式会社 | System, medium, and method calibrating gray data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102082894A (en) | 2011-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102082894B (en) | Equipment calibration method and output device | |
| CN102082893B (en) | Digital proof color correcting method and digital proof color correcting device | |
| CN100589521C (en) | Method for printing and outputting L*a*b* image with high fidelity | |
| CN103873736B (en) | Color closed-loop correction method and system based on multi-dimensional table | |
| US20170161864A1 (en) | Printer cartridge and memory device containing a compressed color table | |
| US7307755B2 (en) | Method for correcting unadjusted printing data on the basis of colormetrically measured reference sheet | |
| CN101582977A (en) | Color management apparatus and color management method | |
| CN109587367B (en) | Configuration file adjusting method, configuration file adjusting device and system | |
| CN106937018B (en) | The color mapping method of textile inkjet printing and dyeing is used for based on RBF neural | |
| CN102520579B (en) | Seven-color separation method for colored images | |
| JP6349741B2 (en) | Look-up table generation method and color conversion device | |
| JP2002010091A (en) | Color marking equipment | |
| US8325394B2 (en) | Hierarchical scanner characterization | |
| CN108958674A (en) | A kind of ink-jet printer chases after color method, system, storage medium and chases after color equipment | |
| CN103978783B (en) | A kind of control method for electrostatic digital printed site contrast | |
| US20220223076A1 (en) | Color Calibration of Display Modules Using a Reduced Number of Display Characteristic Measurements | |
| US20110176153A1 (en) | Method of generating a color profile, an image processing device for generating the color profile, and a computer readable medium storing a control program of the image processing device | |
| CN101132472B (en) | Image processor, computer readable medium and image processing method | |
| US20090015888A1 (en) | Color reproduction error minimization method and device | |
| CN202656610U (en) | Printing color management integration system | |
| CN103963453B (en) | A kind of printing grey balance pre-setting method | |
| CN113553012B (en) | Output effect consistency adjustment system and method for multichannel printing equipment | |
| JP2016019288A (en) | Method for calculating alternate color of special color | |
| CN103129184A (en) | Special colour calibration method and device of special colour calibration | |
| US20070070367A1 (en) | Linearization and characterization process of an image producing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220621 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: BEIJING FOUNDER ELECTRONICS Co.,Ltd. Address before: 100871, Haidian District Fangzheng Road, Beijing, Zhongguancun Fangzheng building, 298, 513 Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: BEIJING FOUNDER ELECTRONICS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |