A method for self-adapting optimization of publication color based on color deviation of printing

Abstract

The present application relates to the field of data analysis, and more particularly to a publication color adaptive optimization method based on printing color deviation, the present application extracts the color block distribution characteristics of the publication by identifying the color data of the publication; based on the color block distribution characteristics and the color quantity corresponding to a plurality of color blocks of the publication, the printing deviation interference characteristic value of the publication is evaluated to mark the publication; according to the marking result, the color printing of the publication is analyzed; according to the printing level representation parameter, it is judged whether the color fusion color block meets the standard printing condition, and the color printing of the corresponding publication is adjusted, the present application realizes color data recognition and feature extraction, printing deviation interference evaluation and marking, color fusion color block analysis, printing condition judgment and parameter adjustment, and then, under the premise of adapting to complex color scene, the printing quality of the publication is accurately controlled, and the printing precision and color restoration degree of the publication are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of data analysis, and in particular to a publication color adaptive optimization method based on printing color deviation. BACKGROUND

[0002] With the continuous improvement of people's requirements for publication quality, especially the increasingly stringent requirements for color restoration and accuracy, a method is needed that can detect and analyze printing color deviation in real time and adaptively optimize according to actual conditions. This method can improve the color quality of publications, reduce rework and cost increases caused by color deviation, meet market demand for high-quality publications, and also adapt to the trend of automation and intelligent development of the printing industry.

[0003] Chinese Patent Application Publication No. CN119562016A discloses a publication printing color correction method and system based on deep learning. The method realizes accurate correction and compensation of publication printing color through a series of steps such as cosine distance calculation, color environment matching model, color deviation calculation, and operating parameter adjustment. The core of the method is to use deep learning technology to effectively improve the accuracy of printing color through detailed analysis and processing of printing color, and to ensure that the color quality of the printed matter meets the expected standard.

[0004] However, the prior art still has the following problems,

[0005] In traditional publication printing, relevant personnel rely on their experience to "fuzzily regulate" relevant parameters related to printing, and uniform mode is used for printing adjustment, i.e., a color adjustment method based on fixed parameters, which cannot adapt to the high-precision printing needs of complex and fine areas, making the color deviation problem worse. SUMMARY

[0006] Therefore, the present application provides a publication color adaptive optimization method based on printing color deviation to overcome the problem in the prior art that in traditional publication printing, relevant personnel rely on their experience to "fuzzily regulate" relevant parameters related to printing, and uniform mode is used for printing adjustment, which cannot adapt to the high-precision printing needs of complex and fine areas, making the color deviation problem worse.

[0007] To achieve the above purpose, the present application provides a publication color adaptive optimization method based on printing color deviation, which comprises:

[0008] identifying the color data of the publication to extract the color block distribution characteristics of the publication, the color block distribution characteristics including the minimum ratio corresponding to the area of a single color block and the maximum complementary degree of adjacent color blocks;

[0009] Based on the color block distribution characteristics and the number of colors corresponding to the color blocks of the publication, evaluating the printing deviation interference characterization value of the publication to mark the publication;

[0010] Analyzing the color printing of the publication based on the marking results, including identifying color fusion blocks, extracting shape features of secondary blocks embedded in the color fusion blocks, and analyzing printing level representation parameters of the color fusion blocks;

[0011] Determining whether the color-blending color block meets a benchmark printing condition based on the printing level representation parameters, and adjusting the color printing of the corresponding publication, including determining an average number of contour edges and an average number of folded corners of the secondary color block to calculate a printing fine representation value of the color-blending color block, and adjusting the screen ruling based on the printing fine representation value;

[0012] The shape features include the number of secondary color blocks and the average of the shortest distances between the secondary color blocks.

[0013] Furthermore, the process of evaluating the printing deviation interference characterization value of the publication includes:

[0014] The sum of the minimum ratio threshold and the minimum ratio corresponding to the area of ​​a single color block and the ratio of the maximum complementarity of adjacent color blocks to the maximum complementarity threshold is used as the first deviation interference feature;

[0015] using a ratio of the color quantity to a color quantity threshold as a second deviation interference feature;

[0016] The first deviation interference feature and the second deviation interference feature are weightedly summed to determine the printing deviation interference characterization value.

[0017] Furthermore, marking the publication includes:

[0018] If the printing deviation interference characterization value of the publication is greater than or equal to the printing deviation interference characterization threshold, the publication is marked.

[0019] Furthermore, based on the marking results, the color printing of the publication is analyzed, including:

[0020] If any publication is marked, the color printing of the publication is analyzed.

[0021] Furthermore, the process of identifying color fusion blocks includes:

[0022] If any color block meets the regional fusion condition, the color block is identified as the color fusion color block;

[0023] The region fusion condition comprises a ratio of an area of the secondary color block embedded in the color block to a total area of the color block being less than a hierarchical area threshold value.

[0024] Further, the process of analyzing the printing hierarchy representation parameter of the color fusion color block comprises,

[0025] taking a ratio of the number of secondary color blocks to a secondary color block number threshold value as a first printing hierarchy feature;

[0026] taking a ratio of the average of the shortest distances between the secondary color blocks to a shortest distance average threshold value as a second printing hierarchy feature;

[0027] determining a sum of the first printing hierarchy feature and the second printing hierarchy feature as the printing hierarchy representation parameter.

[0028] Further, determining whether the color fusion color block satisfies a reference printing condition according to the printing hierarchy representation parameter comprises,

[0029] if the printing hierarchy representation parameter of the color fusion color block is greater than or equal to a printing hierarchy representation parameter threshold value, determining that the color fusion color block does not satisfy the reference printing condition.

[0030] Further, adjusting the color printing of the color fusion color block comprises,

[0031] if the color fusion color block does not satisfy the reference printing condition, adjusting the color printing of the corresponding publication.

[0032] Further, the process of calculating the printing fine representation value of the color fusion color block comprises,

[0033] taking a ratio of the average of the contour edge numbers of the secondary color blocks to a contour edge number average threshold value as a first printing fine feature;

[0034] taking a ratio of the average of the number of corners to a corner number average threshold value as a second printing fine feature;

[0035] taking a sum of the first printing fine feature and the second printing fine feature as the printing fine representation value.

[0036] Further, adjusting the screening line number based on the printing fine representation value comprises,

[0037] increasing the screening line number, and the increase amount of the screening line number is in a positive correlation with the printing fine representation value.

[0038] Compared with the prior art, the printing deviation interference evaluation value of the publication is evaluated based on the color block distribution feature and the color quantity corresponding to the color blocks of the publication, so as to mark the publication; the color printing of the publication is analyzed according to the marking result; and whether the color fusion color block meets the reference printing condition is judged according to the printing level representation parameter, and the color printing of the corresponding publication is adjusted.

[0039] Especially, the overall color distribution of the publication is first considered, for the publication composed of a plurality of color blocks, the relatively close color blocks can reflect the influence of the color block size on printing, when two color blocks with high color complementarity are adjacent, ink overprint will cause visual deviation or register error, and the more the color quantity of the publication is, the higher the color separation register difficulty is, therefore, the printing deviation interference evaluation value of the publication is evaluated based on the color block distribution feature and the color quantity corresponding to the color blocks of the publication, so as to mark the publication; the color printing of the publication is analyzed according to the marking result; and whether the color fusion color block meets the reference printing condition is judged according to the printing level representation parameter, and the color printing of the corresponding publication is adjusted.

[0040] Especially, the overall color distribution of the publication is first considered, for the publication composed of a plurality of color blocks, the relatively close color blocks can reflect the influence of the color block size on printing, when two color blocks with high color complementarity are adjacent, ink overprint will cause visual deviation or register error, and the more the color quantity of the publication is, the higher the color separation register difficulty is, therefore, the printing deviation interference evaluation value of the publication is evaluated based on the color block distribution feature and the color quantity corresponding to the color blocks of the publication, so as to mark the publication; the color printing of the publication is analyzed according to the marking result; and whether the color fusion color block meets the reference printing condition is judged according to the printing level representation parameter, and the color printing of the corresponding publication is adjusted.

[0041] Especially, the printing fine complexity of the publication is quantified, the related printing parameters are dynamically adjusted, the irregularity degree of the secondary color block is represented by the number of the profile edges of the secondary color block embedded in the color fusion color block, and the smoothness degree of the edge profile of the secondary color block is represented by the number of the corner angles of the secondary color block, so that the geometric complexity and the fine detail degree of the color fusion color block are comprehensively evaluated according to the above two features, data support is provided for subsequent adjustment of the related printing parameters of the corresponding publication, and then, the printing quality of the publication is accurately regulated under the premise of adapting to the complex color scene, and the printing precision and the color restoration degree of the publication are improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 A step schematic diagram of a publication color self-adaptive optimization method based on printing color deviation of an embodiment of the present application;

[0043] Figure 2 A logic judgment diagram for marking a publication of an embodiment of the present application;

[0044] Figure 3 A logic judgment diagram for identifying a color fusion color block of an embodiment of the present application;

[0045] Figure 4 A logic judgment diagram for judging whether a color fusion color block meets a reference printing condition of an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the objects and advantages of the present application clearer, the present application will be further described below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0047] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and not to limit the protection scope of the present application.

[0048] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship such as "in" are based on the direction or position relationship shown in the drawings, which is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0049] Please refer to Figure 1 Fig. 1 shows a step schematic diagram of a publication color self-adaptive optimization method based on printing color deviation of an embodiment of the present application, and the publication color self-adaptive optimization method based on printing color deviation of the embodiment of the present application comprises:

[0050] Step S1, identifying color data of the publication to extract a color block distribution feature of the publication, the color block distribution feature including a minimum ratio corresponding to an area of a single color block and a maximum value of complementarity of adjacent color blocks;

[0051] Step S2, evaluating a printing deviation interference representation value of the publication based on the color block distribution feature and a color quantity corresponding to a plurality of color blocks of the publication to mark the publication;

[0052] Step S3, analyzing color printing of the publication according to the marking result, including identifying a color fusion color block and extracting shape features of secondary color blocks embedded in the color fusion color block to analyze a printing level representation parameter of the color fusion color block;

[0053] Step S4, determining whether the color fusion color block meets a reference printing condition according to the printing level representation parameter and adjusting color printing of the corresponding publication, including determining an average value of contour edge numbers and an average value of corner numbers of the secondary color blocks to calculate a printing precision representation value of the color fusion color block and adjusting a screening line number based on the printing precision representation value.

[0054] The shape features include a number of secondary color blocks and an average value of shortest distances between the secondary color blocks.

[0055] Specifically, the publication is a graphic publication formed by a plurality of color blocks.

[0056] Specifically, the color data includes color block distribution features, a color quantity corresponding to a plurality of color blocks of the publication, shape features of secondary color blocks, contour edge numbers of the secondary color blocks, and corner numbers.

[0057] Specifically, the identification manner of the color blocks is not specifically limited, and an image clustering algorithm can be used to identify an area of the same color as a single color block, and of course, other manners can also be used, which will not be described herein.

[0058] Specifically, the process of evaluating the printing deviation interference representation value of the publication includes,

[0059] The minimum ratio threshold value, the minimum ratio corresponding to the area of the single color block, and a ratio of the maximum value of complementarity of the adjacent color blocks to the maximum complementarity threshold value are taken as a first deviation interference feature.

[0060] The color quantity and the color quantity threshold value are taken as a second deviation interference feature.

[0061] The first deviation interference feature and the second deviation interference feature are weighted and summed to determine the printing deviation interference representation value.

[0062] Specifically, in the actual printing process, the color block composition and distribution of the publication can more intuitively reflect the interference of color distribution on printing and the degree of color deviation of the publication caused thereby. Therefore, in the implementation, the color block distribution characteristics of the publication, i.e., the minimum ratio corresponding to the area of a single color block and the maximum value of the complementarity of adjacent color blocks, are preferentially considered. Therefore, a slightly higher weight is given to the first deviation interference feature calculated based on the color block distribution characteristics. Therefore, when performing weighted summation, the weight of the first deviation interference feature is set to 0.6, and the weight of the second deviation interference feature is set to 0.4.

[0063] In the embodiment, the purpose of setting the minimum ratio threshold, the maximum complementarity threshold, and the color quantity threshold is to represent that the color block composition and distribution of the publication have a greater interference effect on printing, and further, a greater possibility of causing color deviation of the publication. By obtaining historical color data of a plurality of publications completed printing, calling historical data of the minimum ratio corresponding to the area of a single color block, historical data of the complementarity of adjacent color blocks, and historical data of the color quantity corresponding to a plurality of color blocks of the publication, solving the minimum ratio mean value, the maximum complementarity mean value, and the color quantity mean value, and corresponding as the reference quantity under normal circumstances, based on the purpose of setting the above three thresholds, the minimum ratio threshold is determined as the product of the minimum ratio mean value and the ratio deviation coefficient, the maximum complementarity threshold is determined as the product of the maximum complementarity mean value and the complementarity deviation coefficient, and the color quantity threshold is determined as the product of the color quantity mean value and the quantity deviation coefficient. The ratio deviation coefficient is selected within the interval [0.92, 0.95], the complementarity deviation coefficient is selected within the interval [1.05, 1.1], and the quantity deviation coefficient is selected within the interval [1.2, 1.4]. The minimum ratio of the area of a single color block to the area of the publication is used as the minimum ratio corresponding to the area of a single color block.

[0064] It can be understood that in the printing process, ink overprinting or edge bleeding, and mixing of color blocks with high complementarity can generate gray or black stains. For example, dark red is formed by overprinting of cyan and red, causing color deviation from the design expectation. Especially when the color blocks are adjacent, the color deviation in the overprinting area is more obvious. Therefore, in the embodiment, the complementarity degree between the colors of the color blocks is measured by the complementarity.

[0065] In a standard color wheel, for example, an RYB color wheel or an HSB color wheel, the angle difference between two colors is closer to 180°, and the complementarity of the two colors is higher. Therefore, the ratio of the angle difference between the colors corresponding to adjacent color blocks in the standard color wheel to the angle difference (180°) of the standard complementary color is used as the complementarity. Details are not described herein.

[0066] Specifically, the present application first considers the overall color distribution of the publication. For a publication composed of several color blocks, the relatively close color blocks can reflect the influence of color block size on printing. For example, extremely small color blocks are prone to distortion. When two color blocks with high color complementarity are adjacent, ink overprinting will cause visual deviation or register error. The more colors in the publication, the more difficult the color separation and register will be. Therefore, the present application comprehensively considers the above-mentioned features, evaluates the printing deviation interference characteristic value of the publication to represent the degree of printing deviation affected by the interference of color components and distribution, provides data support for subsequent marking of the publication, and then adaptively analyzes the corresponding publication. The present application precisely regulates the printing quality of the publication under the premise of adapting to complex color scenes, improves the printing precision and color restoration degree of the publication.

[0067] Specifically, please refer to Figure 2 The logic decision diagram for marking the publication by the embodiment of the present application is shown in the figure. The marking of the publication includes,

[0068] If the printing deviation interference characteristic value of the publication is greater than or equal to the printing deviation interference characteristic threshold value, the publication is marked.

[0069] If the printing deviation interference characteristic value of the publication is less than the printing deviation interference characteristic threshold value, the publication does not need to be marked.

[0070] The printing deviation interference characteristic threshold value is selected in the interval [1.66, 1.72].

[0071] Specifically, according to the marking result, the color printing of the publication is analyzed, including,

[0072] If there is any publication marked, the color printing of the publication is analyzed.

[0073] Specifically, please refer to Figure 3 The logic decision diagram for identifying the color fusion color block by the embodiment of the present application is shown in the figure. The process of identifying the color fusion color block includes,

[0074] If there is any color block meeting the area fusion condition, the color block is identified as the color fusion color block.

[0075] The area fusion condition includes that the ratio of the area of the secondary color block embedded in the color block to the total area of the color block is less than the hierarchical area threshold value.

[0076] It is understandable that when printing publications, there may be a color block with the main body of one color and color blocks of other colors embedded in the color block. Therefore, the color blocks of other colors embedded in the color block are regarded as the secondary color blocks. Then, the secondary color blocks are analyzed. Since the distribution of the secondary color blocks can reflect the overall hierarchy of the color blocks, more sophisticated printing parameters are required when printing times that occupy a smaller area. Taking the above factors into consideration, the hierarchy area threshold is selected within the range of [10% of the total area of ​​the color block, 15% of the total area of ​​the color block].

[0077] Specifically, the process of analyzing the printing level representation parameters of the color fusion block includes:

[0078] The ratio of the number of secondary color blocks to the threshold value of the number of secondary color blocks is used as the first printing level feature;

[0079] The ratio of the shortest distance mean threshold to the shortest distance mean between each secondary color block is used as the second printing level feature;

[0080] The sum of the first printing level feature and the second printing level feature is determined as the printing level characterization parameter.

[0081] In this embodiment, the purpose of setting the secondary color block number threshold and the shortest distance mean threshold is to characterize the situation where the level of complexity of the color blocks is high. By obtaining the historical color data of several publications completed for printing, calling the historical data of the secondary color block number and the historical data of the shortest distance mean between each secondary color block, solving the average value of the secondary color block number and the average value of the shortest distance mean, and correspondingly using them as the benchmark amount under normal circumstances, based on the purpose of setting the above two thresholds, the secondary color block number threshold is determined as the product of the average value of the secondary color block number and the first deviation coefficient, and the shortest distance mean threshold is determined as the product of the average value of the shortest distance mean and the second deviation coefficient, wherein the first deviation coefficient is selected within the interval [1.2, 1.4], and the second deviation coefficient is selected within the interval [0.92, 0.95].

[0082] Specifically, the present application performs hierarchical detailed analysis on the marked publication, identifies color fusion blocks, i.e. blocks prone to color difference, faults, etc. in the printing process, and further quantitatively evaluates the shape features of the secondary color blocks embedded therein to evaluate the printing hierarchical complexity of the publication, for example, the more the number of secondary color blocks or the smaller the average interval, the more fine the color transition, the higher the requirement for registration accuracy and dot control, and the more prone to color aliasing or white exposure due to registration error. Therefore, the present application calculates the printing hierarchical representation parameter of the color fusion block to represent the hierarchical complexity of the corresponding color block printing, and provides data support for subsequent determination of whether the color fusion block meets the reference printing condition. The present application accurately regulates the printing quality of the publication under the premise of adapting to complex color scenes, and improves the printing accuracy and color restoration of the publication.

[0083] Specifically, please refer to Figure 4 The figure is a logic determination diagram for determining whether the color fusion block meets the reference printing condition according to the printing hierarchical representation parameter, which includes,

[0084] If the printing hierarchical representation parameter of the color fusion block is greater than or equal to the printing hierarchical representation parameter threshold, it is determined that the color fusion block does not meet the reference printing condition.

[0085] If the printing hierarchical representation parameter of the color fusion block is less than the printing hierarchical representation parameter threshold, it is determined that the color fusion block meets the reference printing condition.

[0086] The printing hierarchical representation parameter threshold is selected in the interval [2.17, 2.23].

[0087] Specifically, the color printing of the color fusion block is adjusted, which includes,

[0088] If the color fusion block does not meet the reference printing condition, the color printing of the corresponding publication is adjusted.

[0089] Specifically, the process of calculating the printing fine representation value of the color fusion block includes,

[0090] The ratio of the average number of contour edges of the secondary color block to the average number of contour edges threshold is taken as the first printing fine feature.

[0091] The ratio of the average number of corners to the average number of corners threshold is taken as the second printing fine feature.

[0092] The sum of the first printing fine feature and the second printing fine feature is taken as the printing fine representation value.

[0093] In this embodiment, the purpose of setting the contour edge number average threshold value and the corner number average threshold value is to represent that the shape of the secondary color block is more irregular, the edge contour is low in smoothness, and the color fusion color block is high in fine complexity. By obtaining historical color data of a plurality of publications completed printing, calling the contour edge number average historical data and the corner number average historical data of the secondary color block, solving the average value of the contour edge number average and the average value of the corner number average, and corresponding as the reference quantity under normal circumstances, based on the purpose of setting the above two threshold values, the contour edge number average threshold value is determined as the product of the average value of the contour edge number average and the first offset coefficient, and the corner number average threshold value is determined as the product of the average value of the corner number average and the second offset coefficient, wherein the first offset coefficient is selected in the interval [1.2, 1.4], and the second offset coefficient is selected in the interval [1.1, 1.2].

[0094] Specifically, the printing fine complexity of the publication is quantified, the related printing parameters are dynamically adjusted, the irregularity of the secondary color block is represented by the contour edge number of the secondary color block embedded in the color fusion color block, and the smoothness of the edge contour of the secondary color block is represented by the corner number of the secondary color block. Therefore, the geometric complexity and the detail fine degree of the color fusion color block are evaluated according to the above two features, data support is provided for subsequent adjustment of the related printing parameters of the corresponding publication, and then the printing quality of the publication is accurately regulated under the premise of adapting to the complex color scene, and the printing precision and the color restoration degree of the publication are improved.

[0095] Specifically, the screening line number is adjusted based on the printing fine representation value, including,

[0096] The screening line number is increased, and the increase amount of the screening line number is in a positive correlation with the printing fine representation value.

[0097] In this embodiment, optionally,

[0098] The printing fine representation value is compared with a preset first printing fine representation comparison threshold value and a second printing fine representation comparison threshold value,

[0099] When the printing fine representation value is greater than the second printing fine representation comparison threshold value, the increase amount of the screening line number is determined as a first increase amount, and the first increase amount is set as 0.5 times the integral of the reference screening line number.

[0100] When the printing fine representation value is greater than or equal to the first printing fine representation comparison threshold value and less than or equal to the second printing fine representation comparison threshold value, the increase amount of the screening line number is determined as a second increase amount, and the second increase amount is set as 0.3 times the integral of the reference screening line number.

[0101] When the printing fine characterization value is less than the first printing fine characterization contrast threshold value, then the increase amount of the screening line number is a third increase amount, which is set as 0.2 times of the reference screening line number, and the third increase amount is rounded.

[0102] The first printing fine characterization contrast threshold value is 1.1 times of the printing fine characterization threshold value, and the second printing fine characterization contrast threshold value is 1.3 times of the printing fine characterization threshold value.

[0103] The printing fine characterization threshold value is selected in the interval [2.18, 2.25].

[0104] Specifically, for the determination of the reference screening line number, the reference screening line number can be determined according to different printing scenarios, for example, for newspaper and newsprint printing, the reference screening line number can be set as 60-85lpi; for magazines and picture albums, the reference screening line number can be set as 100-150lpi; for posters, the reference screening line number can be set as 175-200lpi, of course, the reference screening line number can also be determined according to other manners by those skilled in the art, which will not be described here.

[0105] The publication color self-adaptive optimization method based on printing color deviation of the present application can be stored in a computer readable storage medium if it is realized in the form of a software function unit and sold or used as an independent product, based on such understanding, the technical solution of the present application or the part that contributes to the prior art or the whole or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including a plurality of instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application, and the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various storage program codes.

[0106] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A method for self-adapting optimization of publication color based on color deviation of printed colors, characterized in that, The method comprises the following steps: identifying color data of a publication to extract a color block distribution feature of the publication, the color block distribution feature comprising a minimum ratio corresponding to an area of a single color block and a maximum complementarity of adjacent color blocks; evaluating a printing deviation interference representation value of the publication based on the color block distribution feature and a color quantity corresponding to a plurality of color blocks of the publication to mark the publication; analyzing color printing of the publication according to a marking result, comprising identifying a color fusion color block, extracting shape features of secondary color blocks embedded in the color fusion color block to analyze a printing level representation parameter of the color fusion color block; determining whether the color fusion color block meets a reference printing condition according to the printing level representation parameter, and adjusting color printing of a corresponding publication, comprising determining an average contour edge number and an average number of angles of the secondary color blocks to calculate a printing precision representation value of the color fusion color block, and adjusting a screening line number based on the printing precision representation value; wherein the shape features comprise a number of secondary color blocks and an average minimum distance between the secondary color blocks; the process of evaluating the printing deviation interference representation value of the publication comprises: taking a minimum ratio threshold value, a minimum ratio corresponding to an area of a single color block and a ratio of a maximum complementarity of adjacent color blocks to a maximum complementarity threshold value as a first deviation interference feature; taking a ratio of a color quantity to a color quantity threshold value as a second deviation interference feature; determining the printing deviation interference representation value by weighted sum of the first deviation interference feature and the second deviation interference feature.

2. The method for publication color self-adaptive optimization based on printing color deviation according to claim 1, characterized in that, the process of marking the publication comprises: if a printing deviation interference representation value of a publication is greater than or equal to a printing deviation interference representation threshold value, marking the publication.

3. The method for publication color self-adaptive optimization based on printing color deviation according to claim 2, characterized in that, the process of analyzing color printing of the publication according to a marking result comprises: if there is any publication marked, analyzing color printing of the publication.

4. The method for publication color self-adaptive optimization based on printing color deviation according to claim 1, characterized in that, the process of identifying a color fusion color block comprises: if there is any color block meeting a regional fusion condition, identifying the color block as the color fusion color block; wherein the regional fusion condition comprises a ratio of an area of a secondary color block embedded in the color block to a total area of the color block being less than a level area threshold value.

5. The method for publication color self-adaptive optimization based on printing color deviation according to claim 1, characterized in that, the process of analyzing a printing level representation parameter of the color fusion color block comprises: taking a ratio of a number of secondary color blocks to a secondary color block number threshold value as a first printing level feature; taking a ratio of an average minimum distance between the secondary color blocks to an average minimum distance threshold value as a second printing level feature; determining the printing level representation parameter by sum of the first printing level feature and the second printing level feature.

6. The method for publication color self-adaptive optimization based on printing color deviation according to claim 5, characterized in that, the process of determining whether the color fusion color block meets a reference printing condition according to the printing level representation parameter comprises: if a printing level representation parameter of a color fusion color block is greater than or equal to a printing level representation parameter threshold value, determining that the color fusion color block does not meet the reference printing condition.

7. The method for publication color self-adaptive optimization based on printing color deviation according to claim 6, characterized in that, the process of adjusting color printing of the color fusion color block comprises: if the color fusion color block does not meet the reference printing condition, adjusting color printing of a corresponding publication.

8. The method for publication color self-adaptive optimization based on printing color deviation according to claim 1, characterized in that, The process of calculating the printing fine representation value of the color fusion patch comprises, taking the ratio of the contour edge number average value of the secondary color patch to the contour edge number average value threshold as a first printing fine feature; taking the ratio of the corner number average value to the corner number average value threshold as a second printing fine feature; taking the sum of the first printing fine feature and the second printing fine feature as the printing fine representation value.

9. The method for publication color self-adaptive optimization based on printing color deviation according to claim 8, characterized in that, adjusting the screening line number based on the printing fine representation value, comprising, increasing the screening line number, and the increase amount of the screening line number is in positive correlation with the printing fine representation value.

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