CN111752493A - Automatic color-tracing method, device, equipment and storage medium for printer - Google Patents
Automatic color-tracing method, device, equipment and storage medium for printer Download PDFInfo
- Publication number
- CN111752493A CN111752493A CN201910239798.8A CN201910239798A CN111752493A CN 111752493 A CN111752493 A CN 111752493A CN 201910239798 A CN201910239798 A CN 201910239798A CN 111752493 A CN111752493 A CN 111752493A
- Authority
- CN
- China
- Prior art keywords
- color
- initial
- value
- values
- image
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000007639 printing Methods 0.000 claims abstract description 43
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000007667 floating Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003086 colorant Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
- G06F3/1204—Improving or facilitating administration, e.g. print management resulting in reduced user or operator actions, e.g. presetting, automatic actions, using hardware token storing data
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
- G06F3/1208—Improving or facilitating administration, e.g. print management resulting in improved quality of the output result, e.g. print layout, colours, workflows, print preview
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1242—Image or content composition onto a page
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color Image Communication Systems (AREA)
Abstract
The invention discloses an automatic color tracing method, device, equipment and storage medium of a printer, which are characterized in that the initial color value of a pixel point selected from an image to be printed is obtained; adjusting the initial color values to obtain a corresponding number of color block color values; printing according to each color block color value to obtain a plurality of printing color blocks, wherein the plurality of printing color blocks form a color target graph; comparing the color target image with a sample image corresponding to the image to be printed to obtain an actual color value corresponding to the initial color value; processing the actual color value and the initial color value to obtain a color tracing curve of the ink-jet printer; and adjusting the initial color values of all pixel points in the image to be printed according to the color tracing curve. The invention only needs one-time printing adjustment, is simple and quick, obtains the color-tracing curve based on a plurality of pixel points, has small color difference of color tracing, has good restoration effect on the image, and does not need to rely on the personnel of the fund depth color matching.
Description
Technical Field
The present invention relates to the field of printing, and in particular, to an automatic color tracking method, apparatus, device, and storage medium for a printer.
Background
In the color management process of the color ink-jet printer, the color curve of the printer can be adjusted to control the output ink amount of each channel of the printer, so that the overall printing color effect of the printer is controlled. Therefore, the printing effect desired by the user can be effectively obtained by controlling the change of the color curve of the printer, but the purpose of the color curve control of the printer is to enable the ink quantity value input by the printer to be closer to the actually output ink quantity value, so as to ensure that the printed color is more stable.
However, for the existing customer who needs to print an image with the same color as the sample image or print a designated color, the customer's requirement cannot be met only by the color curve in the color management. The method in the prior art is characterized in that a color curve is adjusted manually and repeatedly, then an image is printed, and finally a target ink input value with the same or similar color to the color required by a customer is found.
Disclosure of Invention
The embodiment of the invention provides an automatic color tracing method, device, equipment and storage medium of a printer, which are used for solving the problems of large workload, time and labor waste of manual adjustment for meeting the specific printing color requirements of customers in the prior art.
In a first aspect, an embodiment of the present invention provides an automatic color-following method for a printer, where the method includes:
acquiring initial color values of pixel points selected from an image to be printed;
adjusting the initial color values to obtain a corresponding number of color block color values;
printing according to each color block color value to obtain a plurality of printing color blocks, wherein the plurality of printing color blocks form a color target graph;
comparing the color target image with a sample image corresponding to the image to be printed to obtain an actual color value corresponding to the initial color value;
processing the actual color value and the initial color value to obtain a color tracing curve of the ink-jet printer;
and adjusting the initial color values of all pixel points in the image to be printed according to the color tracing curve.
Preferably, the adjusting the initial color values to obtain the corresponding number of color block color values includes:
obtaining a floating value of the initial color value;
and adjusting the initial color values for multiple times according to the floating values to obtain the color block color values of the corresponding number, wherein one color block color value corresponds to one printing color block.
Preferably, the comparing the color target map and the sample map corresponding to the image to be printed to obtain the actual color values corresponding to the initial color values comprises:
selecting a color block with the minimum color difference value of the pixel points corresponding to the initial color value in the sample image from the color target image to be marked as a color-tracing color block;
and acquiring color block color values corresponding to the color-tracing color blocks, namely actual color values corresponding to the initial color values.
Preferably, the processing the actual color values and the initial color values to obtain a color-tracing curve of the inkjet printer includes:
establishing a corresponding relation between the initial color value and the actual color value;
and carrying out cubic spline interpolation processing on the corresponding relation to obtain the color tracing curve.
Preferably, the initial color value includes an initial input value of a dot area ratio of each color channel in the inkjet printer, and the initial input value of the dot area ratio of each color channel is set to n, where n is greater than 0.
Preferably, there is only one initial color value, and the initial input value n of the dot area ratio of each color channel in the initial color value is 40% to n 60%
Preferably, the adjusting the initial color values a plurality of times according to the floating value to obtain a corresponding number of color block color values includes:
respectively adjusting the initial input value of the dot area rate of each color channel in the initial color value according to the floating value to obtain an actual input value of the dot area rate corresponding to each color channel;
and arranging and combining the actual input values of the dot area rates corresponding to each color channel to obtain the color block color values of the corresponding number.
In a second aspect, an embodiment of the present invention provides an automatic color tracking apparatus for a printer, where the apparatus includes:
the initial color value acquisition module is used for acquiring the initial color values of pixel points selected from the image to be printed;
the color block color value acquisition module is used for adjusting the initial color values to acquire the corresponding number of color block color values;
the printing module is used for printing according to each color block color value to obtain a plurality of printing color blocks, and the plurality of printing color blocks form a color target graph;
the actual color value acquisition module is used for comparing the color target image with a sample image corresponding to the image to be printed to acquire an actual color value corresponding to the initial color value;
the color tracing curve acquisition module is used for processing the actual color value and the initial color value to obtain a color tracing curve of the inkjet printer;
and the adjusting module is used for adjusting the initial color values of all pixel points in the image to be printed according to the color tracing curve.
In a third aspect, an embodiment of the present invention provides an automatic color-following device for a printer, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of the first aspect of the embodiments described above.
In a fourth aspect, embodiments of the present invention provide a storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of the first aspect in the above embodiments.
In summary, according to the method, the device, the apparatus, and the storage medium for automatically color chasing of a printer provided in the embodiments of the present invention, initial color values of some pixel points selected from an image to be printed are obtained, then each of the initial color values is adjusted to obtain a corresponding number of color block color values, a color target map corresponding to each of the color values is obtained by printing according to the color block color values, the color target map and a sample map are compared to obtain actual color values corresponding to the initial color values, finally, the actual color values and the initial color values are processed to obtain a color chasing curve, and the initial color values of all the pixel points in the image to be printed are adjusted according to the color chasing curve, so that it is ensured that colors of the finally printed image are the same as or similar to colors of the sample. The method only needs one-time printing adjustment, is simple and quick, obtains the color tracing curve based on a plurality of pixel points, has small color difference of color tracing, has good restoration effect on the image, and does not need to rely on the personnel of depth toning.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an automatic color-following method of a printer according to a first embodiment of the present invention.
Fig. 2 is a flowchart of an automatic color-chasing method of a printer according to a second embodiment of the present invention.
Fig. 3 is patch color information of an automatic color-following method of a printer according to a second embodiment of the present invention.
Fig. 4 is a block diagram of the printed colors in the automatic color matching method of the printer according to the second embodiment of the present invention.
Fig. 5 is patch color information of an automatic color-following method of a printer according to a third embodiment of the present invention.
Fig. 6 is a color chart of a cyan channel in an automatic color-following method of a printer according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an automatic color-tracing device of a printer according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an automatic color-tracing apparatus of a printer according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1, an embodiment of the present invention provides an automatic color tracking method for a printer, the method includes obtaining initial color values of pixel points selected from an image to be printed, then adjusting the initial color values to obtain corresponding numbers of color block color values, printing according to the color block color values to obtain a printed color target image corresponding to each color value, comparing the color target image with a sample image to obtain actual color values corresponding to the initial color values, finally processing the actual color values and the initial color values to obtain a color tracking curve, and adjusting the initial color values of all the pixel points in the image to be printed according to the color tracking curve, so as to ensure that colors of the finally printed image are the same as or similar to colors of the sample. The method only needs one-time printing adjustment, is simple and quick, obtains the color tracing curve based on a plurality of pixel points, has small color difference of color tracing, has good restoration effect on the image, and does not need to rely on the personnel of depth toning. The method specifically comprises the following steps:
s1, acquiring initial color values of pixel points selected from the image to be printed;
preferably, in this example, one of the initial color values includes an initial input value of a dot area rate of each color channel, and the corresponding actual color value includes an actual input value of a dot area rate of each color channel, and further, the color channels include a basic four-color channel of inkjet printing: cyan channel (C, Cyan), Magenta channel (M, Magenta), Yellow channel (Y, Yellow), and black channel (K, black). The color channels may further include a spot color channel, such as a blue color channel, a red color channel, and the like, and the color tracing methods of all the color channels are the same. Meanwhile, in the present embodiment, the maximum value of the dot area ratio input of each color channel is 100%, and the minimum value is 0.
Preferably, in order to ensure the accuracy of color chasing, a plurality of initial color values are selected, each initial color value may correspond to only one pixel point or a plurality of pixel points, and the initial input value of the dot area rate of each color channel in each initial color value in the plurality of initial color values is greater than 0, so that the pixel points corresponding to the initial color values are all mixed colors, and the reduction of the number of samples due to the fact that the input value of a certain color channel is zero is avoided. If the initial color value has three values, which are the first initial color value, the second initial color value, and the third initial color value, and the initial input values of the dot area rates of the cyan channel, the magenta channel, the yellow channel, and the black channel of the first initial color value are in the range of 0-35%, the initial input values of the dot area rates of the cyan channel, the magenta channel, the yellow channel, and the black channel of the second initial color value are in the range of 35-70%, and the third initial color valueThe initial input values of the dot area rates of the cyan channel, the magenta channel, the yellow channel and the black channel of the color values are in the range of 70-100%, so that the dispersibility of the sample can be ensured, and the accuracy of color tracing is further ensured; the 3 initial color values obtained from the color values to be adjusted in the image to be printed are respectively P1＝(C1、M1、Y1、K1)、P2＝(C2、M2、Y2、K2)、P3＝(C3、M3、Y3、K3) Then P is1＝(C1＝20％、M1＝30％、Y1＝30％、K1＝15％)、P2＝(C2＝50％、M2＝40％、Y2＝45％、K2＝60％)、P3＝(C3＝80％、M3＝72％、Y3＝90％、K3100%). Each initial color value selected in the embodiment corresponds to a plurality of pixel points, so that the selected sample has great representativeness, and the final color tracing is more accurate. However, if it is found during preprinting that only the color value of an individual pixel point is greatly different from the color value of the sample, only the initial color value corresponding to the pixel point with relatively large color can be selected, and at this time, one of the initial color values corresponds to one pixel point.
In another embodiment, one of the initial color values may also be selected, which may improve the efficiency of data processing and color tracking, and at the same time, to ensure the accuracy of the color tracking information, the initial input values of the dot area rates of the cyan channel, the magenta channel, the yellow channel, and the black channel in the optimal initial color values are greater than or equal to 40% and less than or equal to n and less than or equal to 60%, so that the selected color values have certain representativeness, and the final color tracking is more accurate.
S2, adjusting the initial color values to obtain color block color values of corresponding number;
specifically, an adjusted color floating value is obtained according to characteristics of printing equipment, the initial color values are respectively adjusted according to the floating value to obtain corresponding amount of color information, and specifically, initial input values of dot area rates of each color channel in the initial color values are respectively adjusted; referring to fig. 2, the specific adjusting steps include:
s21, respectively adjusting the initial input value of the dot area rate of each color channel in the initial color value according to the floating value to obtain the actual input value of the dot area rate corresponding to each color channel;
and S22, arranging and combining the actual input values of the dot area ratios corresponding to each color channel to obtain the color block color values of corresponding quantity.
Acquiring a floating value according to the characteristics of printing equipment, and respectively adjusting the initial input value of the dot area rate of each color channel in the initial color values according to the floating value to obtain the actual input value of the dot area rate of each color channel, for example, the initial input value of the dot area rate of a cyan channel in one initial color value is as follows: cx, the initial input value of the dot area ratio of the magenta channel is: mx, the initial input value of the dot area ratio of the yellow channel is: yx, the initial input value of the dot area ratio of the black channel is: kx, where the floating value is V, and the adjusted actual input value of the dot area ratio of the cyan channel includes: cx + V and Cx-V, the actual input values for the dot area ratios for the magenta channel include: mx + V and Mx-V, the actual input values of the dot area ratios of the yellow channels include: yx + V and Yx-V, the actual input values of the dot area ratio of the black channel include: kx + V and Kx-V. Obtaining color block color value of each color block in the color target map according to the actual input value of the dot area rate corresponding to each color channel, specifically, obtaining 16 groups of color values (X) by arranging and combining the actual input values of the dot area rate corresponding to each color channel1～X16) And 16 groups of color values correspond to one color target map, and each group of color values corresponds to one color block in the color target map. Specifically, please refer to FIG. 3 as X1～X16The color target map corresponding to the initial color values (Cx, Mx, Yx, Kx) includes 16 color patches, and each color patch corresponds to a set of color information.
In another embodiment, the color block color value of each color block in the color target map is obtained according to the actual input value of the halftone dot area rate corresponding to each color channel, specifically, a plurality of values are obtained at certain intervals within the range of the actual input value of the halftone dot area rate corresponding to each color channel, then, the color values of each channel are arranged and combined to obtain the color block color value of one color target map, if 3 values are selected within the range of the actual input value of the halftone dot area rate [ Cx-V: Cx + V ] of the cyan channel, and 3 values are also selected within the range of the actual input value of the halftone dot area rates of the magenta channel, the yellow channel, and the black channel, and then, the color block color values in 81 are obtained by arranging and combining.
S3, printing according to each color block color value to obtain a plurality of printing color blocks, wherein the plurality of printing color blocks form a color target graph;
specifically, each group of color values is numbered according to the permutation and combination, a plurality of printed color blocks are obtained by printing according to the number input color values, and the dry color blocks corresponding to one initial color value form a color target map, so that the color block color value corresponding to each color block can be clearly known. For example, 3 values are selected from the range of actual input values of dot area rates of cyan channel [52-2:52+2] as 50, 52, and 54, the same 3 values are selected from the range of actual input values of dot area rates of magenta channel, yellow channel, and black channel, and then 81 color patch color values are obtained by permutation and combination, for example, the color value of color patch 1 is (C ═ 50, M ═ 50, Y ═ 50, and K ═ 50), the color value of color patch 2 is (C ═ 50, M ═ 50, Y ═ 50, and K ═ 52) … …, see fig. 4 for a color target map of 81 color patches printed according to the color values of the color patches, where each color patch has one color value.
S4, comparing the color target graph with a sample graph corresponding to the image to be printed to obtain an actual color value corresponding to the initial color value;
specifically, referring to fig. 5, the step S4 specifically includes the following steps:
s41, selecting a color block with the minimum color difference value of the pixel points corresponding to the initial color values in the sample image from the color target image to be recorded as a color-tracing color block;
and S42, acquiring color block color values corresponding to the color-tracing color blocks, namely actual color values corresponding to the initial color values.
Specifically, please continue to refer to fig. 4, a color block with a color closest to the color of the pixel point corresponding to the initial color value in the sample map is selected from the 81 color blocks, and the color value of the color block is the actual color value corresponding to the initial color value.
And S5, processing the actual color value and the initial color value to obtain a color tracing curve of the ink-jet printer.
Specifically, a corresponding relationship between the initial color value and the corresponding actual color value is established; and carrying out cubic spline interpolation processing on the corresponding relation to obtain the color tracing curve. If an initial color value X is taken as an example for explanation, selecting a color block color from a color target image corresponding to the initial color value X to compare with the color of a pixel point corresponding to the initial color value X in a sample image corresponding to the image to be printed, selecting a color block with the color of the pixel point corresponding to the initial color value X in the sample image closest to the color of the color block color, and obtaining the color value of the color block, if the initial color value X is (C)ix、Mix、Yix、Kix) Selecting color block with color value of (C)jx、Mjx、Yjx、Kjx) Then, the signals pass through the pairs of (0,0) and (C)ix、Cjx) Carrying out cubic spline difference fitting on the three points (100 ) to obtain a color-tracing curve of a cyan channel, wherein the fitting methods of other channels are the same as those of the cyan channel;
when a plurality of initial color values exist, selecting color blocks of other initial color values to be the same as the selection of the initial color value X, after comparing and selecting color blocks of N selected initial color values, establishing a corresponding relation between the color block color values and the corresponding initial color values, acquiring the corresponding relation of the N initial color values by taking a color channel as a unit, processing the corresponding relation, and then acquiring a color chasing curve, for example, acquiring the corresponding relation of the N initial color values of a cyan channel (C), a magenta channel (M), a yellow channel (Y) and a black channel (K) respectively, processing the N corresponding relations of each color channel to obtain the color chasing curve of each color channel, and automatically adjusting the initial color value of each pixel point of the image to be printed according to the color chasing curves when printing, thereby achieving the purpose of finally realizing the printing of the specific color. In this embodiment, the color target image and the sample image are scanned simultaneously by using a scanning device, and the matching result is automatically obtained according to the scanning result, wherein the comparison between the color target image and the sample image can also be obtained by manual observation. Meanwhile, in order to ensure the accuracy of comparison, in this embodiment, the initial color information of the selected N pixel points is substantially the same as the initial color information of the surrounding pixel points.
Preferably, the color tracing curve comprises color tracing curves of several color channels, as in the present embodiment, the color tracing curves comprise: the color-tracing curves of the cyan channel, the magenta channel, the yellow channel and the black channel.
Specifically, referring to fig. 6, in this embodiment, obtaining the corresponding relationship of the 3 initial color values and processing the corresponding relationship to obtain a color tracing curve includes: obtaining the corresponding relation of 3 initial color values in the same color channel, if there are 3 initial color values which are P respectively1i＝(C1i、M1i、Y1i、K1i)、P2i＝(C2i、M2i、Y2i、K2i)、P3i＝(C3i、M3i、Y3i、K3i) Then, the color information of the similar color blocks in the corresponding color target map is respectively: p1j＝(C1j、M1j、Y1j、K1j)、P2j＝(C2j、M2j、Y2j、K2j)、P3j＝(C3j、M3j、Y3j、K3j)，P1iIs the same as P1jCorresponds to, P2iIs the same as P2jCorresponds to, P3iIs the same as P3jCorrespondingly, acquiring the corresponding relation of 3 pixel points in the Cyan channel (C, Cyan), namely (C)1i→C1j)、(C2i→C2j)、(C3i→C3j) Color value of color blockCjColor value C of pixel point as dependent variableiFitting the corresponding relation of the Cyan channels of 3 pixels by combining origin coordinates (0,0) and end coordinates (100 ) through cubic spline interpolation to obtain a correction curve of the Cyan channel (C, Cyan), namely a color tracing curve, which is specifically shown in figure 5, for independent variables, and then adjusting the initial color values of all the pixels in the image to be printed according to the correction curve, so that the color of the sample given by the client can be printed. The color correction for the other channels is the same as the color correction for the cyan channel and will not be described further herein.
And S5, adjusting the initial color values of all the pixel points in the image to be printed according to the color tracing curve. The method only needs one-time printing adjustment, is simple and quick, obtains the color tracing curve based on a plurality of pixel points, has small color difference of the color tracing, has good image restoration effect, and does not need to rely on the personnel of adjusting the color according to the depth.
Referring to fig. 7, an embodiment of the present invention provides an automatic color tracking apparatus for a printer, including:
an initial color value obtaining module 10, configured to obtain an initial color value of a pixel point selected from an image to be printed;
a color block color value obtaining module 20, configured to adjust the initial color values to obtain a corresponding number of color block color values;
the printing module 30 is configured to print according to each color block color value to obtain a plurality of printing color blocks, where the plurality of printing color blocks form a color target map;
an actual color value obtaining module 40, configured to compare the color target map with a sample map corresponding to the image to be printed to obtain an actual color value corresponding to the initial color value;
a color tracing curve obtaining module 50, configured to process the actual color value and the initial color value to obtain a color tracing curve of the inkjet printer;
and the adjusting module 60 is configured to adjust the initial color values of all the pixel points in the image to be printed according to the color tracing curve.
Preferably, the patch color value acquiring module 20 includes:
a floating value acquiring unit for acquiring a floating value of the initial color value;
and the color block color value acquisition unit is used for adjusting the initial color values for multiple times according to the floating value to acquire the corresponding number of color block color values, and one color block color value corresponds to one printing color block.
Preferably, the actual color value obtaining module 40 includes:
the color-tracing color block obtaining unit is used for selecting a color block with the minimum color difference value of a pixel point corresponding to the initial color value in the sample image from the color target image and marking the color block as a color-tracing color block;
and the color block color value acquisition unit is used for acquiring the color block color value corresponding to the color tracing color block, namely the actual color value corresponding to the initial color value.
Preferably, the tracing curve obtaining module 50 includes:
a correspondence relationship establishing unit configured to establish a correspondence relationship between the initial color value and the actual color value;
and the color-tracing curve acquisition unit is used for carrying out cubic spline interpolation processing on the corresponding relation to obtain the color-tracing curve.
Preferably, the initial color value includes an initial input value of a dot area ratio of each color channel in the inkjet printer, and the initial input value of the dot area ratio of each color channel is set to n, where n is greater than 0.
Preferably, there is only one initial color value, and the initial input value n of the dot area ratio of each color channel in the initial color value is 40% to n 60%
Preferably, the adjusting the initial color values a plurality of times according to the floating value to obtain a corresponding number of color block color values includes:
respectively adjusting the initial input value of the dot area rate of each color channel in the initial color value according to the floating value to obtain an actual input value of the dot area rate corresponding to each color channel;
and arranging and combining the actual input values of the dot area rates corresponding to each color channel to obtain the color block color values of the corresponding number.
In addition, the automatic color-tracing method of the printer according to the embodiment of the present invention described in conjunction with fig. 1 may be implemented by an automatic color-tracing apparatus of the printer. Fig. 8 is a schematic diagram illustrating a hardware configuration of an automatic color-following device of a printer according to an embodiment of the present invention.
The automatic color-following device of the printer may include a processor 401 and a memory 402 storing computer program instructions.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 401 reads and executes computer program instructions stored in the memory 402 to implement the automatic color-following method of the printer according to any of the above-described embodiments.
In one example, the printer's auto-chase device may also include a communication interface 403 and a bus 410. As shown in fig. 8, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
In addition, in combination with the automatic color-tracing method of the printer in the above embodiments, the embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement the automatic color-chasing method of the printer of any of the above embodiments.
In summary, according to the method, the device, the apparatus, and the storage medium for automatically color chasing of a printer provided in the embodiments of the present invention, initial color values of some pixel points selected from an image to be printed are obtained, then each of the initial color values is adjusted to obtain a corresponding number of color block color values, a color target map corresponding to each of the color values is obtained by printing according to the color block color values, the color target map and a sample map are compared to obtain actual color values corresponding to the initial color values, finally, the actual color values and the initial color values are processed to obtain a color chasing curve, and the initial color values of all the pixel points in the image to be printed are adjusted according to the color chasing curve, so that it is ensured that colors of the finally printed image are the same as or similar to colors of the sample. The method only needs one-time printing adjustment, is simple and quick, obtains the color tracing curve based on a plurality of pixel points, has small color difference of color tracing, has good restoration effect on the image, and does not need to rely on the personnel of depth toning.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. An automatic color-chasing method of a printer, the method comprising:
acquiring initial color values of pixel points selected from an image to be printed;
adjusting the initial color values to obtain a corresponding number of color block color values;
printing according to each color block color value to obtain a plurality of printing color blocks, wherein the plurality of printing color blocks form a color target graph;
comparing the color target image with a sample image corresponding to the image to be printed to obtain an actual color value corresponding to the initial color value;
processing the actual color value and the initial color value to obtain a color tracing curve of the ink-jet printer;
and adjusting the initial color values of all pixel points in the image to be printed according to the color tracing curve.
2. The automatic color-chasing method of a printer according to claim 1, wherein the adjusting the initial color values to obtain a corresponding number of patch color values comprises:
obtaining a floating value of the initial color value;
and adjusting the initial color values for multiple times according to the floating values to obtain the color block color values of the corresponding number, wherein one color block color value corresponds to one printing color block.
3. The automatic color-chasing method for a printer according to claim 1 or 2, wherein the comparing the color target map and the sample map corresponding to the image to be printed to obtain actual color values corresponding to the initial color values comprises:
selecting a color block with the minimum color difference value of the pixel points corresponding to the initial color value in the sample image from the color target image to be marked as a color-tracing color block;
and acquiring color block color values corresponding to the color-tracing color blocks, namely actual color values corresponding to the initial color values.
4. The automatic color matching method for printers according to claim 3, wherein the processing the actual color values and the initial color values to obtain a color matching curve of the inkjet printer comprises:
establishing a corresponding relation between the initial color value and the actual color value;
and carrying out cubic spline interpolation processing on the corresponding relation to obtain the color tracing curve.
5. The method of claim 2, wherein the initial color value comprises an initial input value of dot area ratio for each color channel of the inkjet printer, and the initial input value of dot area ratio for each color channel is n, where n > 0.
6. The automatic color-chasing method for a printer according to claim 5, wherein there is only one initial color value, and a dot area ratio initial input value n of each color channel in the initial color value is 40% to n 60%.
7. The method of claim 5, wherein the adjusting the initial color values a plurality of times according to the floating value to obtain a corresponding number of color block color values comprises:
respectively adjusting the initial input value of the dot area rate of each color channel in the initial color value according to the floating value to obtain an actual input value of the dot area rate corresponding to each color channel;
and arranging and combining the actual input values of the dot area rates corresponding to each color channel to obtain the color block color values of the corresponding number.
8. An automatic color-tracing apparatus for a printer, the apparatus comprising:
the initial color value acquisition module is used for acquiring the initial color values of pixel points selected from the image to be printed;
the color block color value acquisition module is used for adjusting the initial color values to acquire the corresponding number of color block color values;
the printing module is used for printing according to each color block color value to obtain a plurality of printing color blocks, and the plurality of printing color blocks form a color target graph;
the actual color value acquisition module is used for comparing the color target image with a sample image corresponding to the image to be printed to acquire an actual color value corresponding to the initial color value;
the color tracing curve acquisition module is used for processing the actual color value and the initial color value to obtain a color tracing curve of the inkjet printer;
and the adjusting module is used for adjusting the initial color values of all pixel points in the image to be printed according to the color tracing curve.
9. An automatic color-chasing apparatus of a printer, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-7.
10. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239798.8A CN111752493B (en) | 2019-03-27 | 2019-03-27 | Automatic color following method, device, equipment and storage medium of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239798.8A CN111752493B (en) | 2019-03-27 | 2019-03-27 | Automatic color following method, device, equipment and storage medium of printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111752493A true CN111752493A (en) | 2020-10-09 |
| CN111752493B CN111752493B (en) | 2024-07-19 |
Family
ID=72672283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239798.8A Active CN111752493B (en) | 2019-03-27 | 2019-03-27 | Automatic color following method, device, equipment and storage medium of printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111752493B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477438A (en) * | 2020-11-13 | 2021-03-12 | 深圳汉弘软件技术有限公司 | Printing method, printing device, ink-jet printer and storage medium |
| CN113393584A (en) * | 2021-06-16 | 2021-09-14 | 深圳市汉森软件有限公司 | Color processing method, device and equipment of three-dimensional model and storage medium |
| CN114013033A (en) * | 2021-10-28 | 2022-02-08 | 齐鲁工业大学 | Control method for photosensitive resin type full-color 3D printing color |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587268A (en) * | 2013-11-13 | 2014-02-19 | 江苏可一艺术品发展有限公司 | Digital duplication color rendition method for painting and calligraphy artworks |
| CN103873736A (en) * | 2012-12-17 | 2014-06-18 | 北大方正集团有限公司 | Color closed-loop correction method and system based on multi-dimensional table |
| CN104354475A (en) * | 2014-11-20 | 2015-02-18 | 武汉大学 | Single-channel ink quantity limiting method for color ink jet printer |
| CN104519238A (en) * | 2013-09-26 | 2015-04-15 | 天津书生软件技术有限公司 | Color correction method |
| CN104553302A (en) * | 2013-10-17 | 2015-04-29 | 北大方正集团有限公司 | Grey balance calibration method and grey balance calibration device |
| CN105159627A (en) * | 2015-08-21 | 2015-12-16 | 杭州慕锐科技有限公司 | Method for automatically correcting digital printing chromatic aberration |
| CN107144531A (en) * | 2017-04-19 | 2017-09-08 | 黄建国 | A kind of content of material detection method, system and device analyzed based on color data |
-
2019
- 2019-03-27 CN CN201910239798.8A patent/CN111752493B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873736A (en) * | 2012-12-17 | 2014-06-18 | 北大方正集团有限公司 | Color closed-loop correction method and system based on multi-dimensional table |
| CN104519238A (en) * | 2013-09-26 | 2015-04-15 | 天津书生软件技术有限公司 | Color correction method |
| CN104553302A (en) * | 2013-10-17 | 2015-04-29 | 北大方正集团有限公司 | Grey balance calibration method and grey balance calibration device |
| CN103587268A (en) * | 2013-11-13 | 2014-02-19 | 江苏可一艺术品发展有限公司 | Digital duplication color rendition method for painting and calligraphy artworks |
| CN104354475A (en) * | 2014-11-20 | 2015-02-18 | 武汉大学 | Single-channel ink quantity limiting method for color ink jet printer |
| CN105159627A (en) * | 2015-08-21 | 2015-12-16 | 杭州慕锐科技有限公司 | Method for automatically correcting digital printing chromatic aberration |
| CN107144531A (en) * | 2017-04-19 | 2017-09-08 | 黄建国 | A kind of content of material detection method, system and device analyzed based on color data |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477438A (en) * | 2020-11-13 | 2021-03-12 | 深圳汉弘软件技术有限公司 | Printing method, printing device, ink-jet printer and storage medium |
| CN113393584A (en) * | 2021-06-16 | 2021-09-14 | 深圳市汉森软件有限公司 | Color processing method, device and equipment of three-dimensional model and storage medium |
| CN113393584B (en) * | 2021-06-16 | 2023-07-14 | 深圳市汉森软件有限公司 | Color processing method, device, equipment and storage medium of three-dimensional model |
| CN114013033A (en) * | 2021-10-28 | 2022-02-08 | 齐鲁工业大学 | Control method for photosensitive resin type full-color 3D printing color |
| CN114013033B (en) * | 2021-10-28 | 2023-08-22 | 齐鲁工业大学 | Control method for photosensitive resin type full-color 3D printing color |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111752493B (en) | 2024-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111752493A (en) | Automatic color-tracing method, device, equipment and storage medium for printer | |
| CN109949379B (en) | Color-tracing method, device, equipment and storage medium for ink-jet printer | |
| CN112073703B (en) | Method and device for adjusting color correction matrix, terminal equipment and medium | |
| US7791776B2 (en) | Spot color adjuster | |
| WO2006002978A1 (en) | Method and system for automatic color determination and corresponding computer programme and computer-readable storage medium | |
| CN110843345B (en) | Ink output amount adjusting method, device, equipment and storage medium | |
| US7512264B2 (en) | Image processing | |
| CN111845084A (en) | Printer ink amount adjusting method, device, equipment and medium based on image processing | |
| WO2000022813A1 (en) | Method and apparatus for automatically generating single-channel critical color transformations | |
| CN104637465B (en) | The bright chroma compensation method of display device local and system | |
| CN111845098B (en) | Method, device, equipment and medium for adjusting ink amount of printer | |
| CN111752492B (en) | Continuous color-following method, device, equipment and storage medium for ink-jet printer | |
| US9373063B2 (en) | Establishing ink usage of process channels | |
| CN111752492A (en) | Continuous color-tracing method, device, equipment and storage medium for ink-jet printer | |
| CN117435149A (en) | Method, device, equipment and medium for acquiring common printing color gamut range | |
| CN100581215C (en) | Color correction method and device of digital printing system | |
| CN104519238A (en) | Color correction method | |
| WO2014209025A1 (en) | Method for correcting color using rgb data | |
| CN104890376A (en) | Total ink limit measuring color card for porcelain inkjet printers | |
| CN103813053A (en) | Method for building gravure spot color separation workflow based on spectrum technology | |
| US7965412B2 (en) | Image processing system and method thereof for processing an image data | |
| CN115543228A (en) | Ink jet printer color tracing method, device, equipment and storage medium | |
| CN117676040A (en) | Output color consistency processing method, device, equipment and storage medium | |
| CN117676024A (en) | Output color adjustment method, device, equipment and storage medium | |
| CN116540954A (en) | Method, device, equipment and storage medium for optimizing dark and light color matching curve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |