Printing method and device for achieving 3D embossment effect and storage medium

Abstract

The invention discloses a printing method and device for achieving a 3D embossment effect and a storage medium. The method comprises the following steps that S1, a printing driver is imported into rip color correction software; s2, according to the printing drive in the step S1, the printing resolution is confirmed, and the resolution matched with the printer is selected in rip color correction software; s3, according to the printing drive in the step S1, the maximum ink quantity of a single channel and the maximum ink quantity of a composite channel of the printer are confirmed by utilizing an ink cutting technology; s4, setting linearization data according to the resolution data obtained in the step S2 and the step S3, the maximum ink quantity of the single channel and the ink quantity of the composite channel; the problem that in the prior art, multiple sprayers are needed when the 3D embossment effect is achieved in a plane printer is solved, the purpose of achieving the 3D embossment effect through the single sprayer is achieved, the key ink quantity value is accurately found by accurately increasing and decreasing the ink jetting amount and observing the ink flowing condition, the gradually-decreased linear ink quantity is set through the ink quantity threshold value, and the printing efficiency is improved. And the 3D embossment effect is realized by utilizing the linear ink quantity.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a printing method, a device and a storage medium for achieving a 3D relief effect. Background Art

[0002] Public document CN108124077B, the embodiment of the present invention discloses a digital printing processing method, device and digital printing equipment for relief patterns, which performs raster image processing on source image data to form various types of color data and spot color off-white data; establishes a data channel for printing small ink dots for various types of color data, and establishes two data channels for printing small ink dots and large ink dots for spot color off-white data; marks the data channel of the nozzle of the digital printing equipment; and distributes the color data in the data channel to the nozzle with the corresponding mark one by one for printing. For each point to be printed on the printed thin material, the digital printing equipment can realize the printing of relief effect patterns in a single printing process, without the need for repeated printing, which is less time-consuming and improves production efficiency.

[0003] In the current solution, two spot color data channels are usually generated through RIP to achieve the corresponding color rendering effect. However, in this process, in order to meet the color requirements, the use of white ink needs to be increased.

[0004] Due to the particularity of white ink in printing or inkjet printing, in order to effectively use white ink to achieve the ideal rendering effect, it means that the number of white ink nozzles must be increased accordingly. Whenever a solution containing two spot color data channels and using white ink is to be enabled, the configuration of the white ink nozzles has to be expanded.

[0005] However, this approach brings significant problems. On the one hand, for many customers, increasing the number of white ink nozzles will directly lead to a significant increase in equipment costs. Customers need to purchase more nozzles and bear a series of related expenses such as installation and maintenance, which makes the overall cost burden heavy. Especially for those customers who are more sensitive to equipment costs, this cost increase has become a major obstacle for them to apply such solutions.

[0006] On the other hand, under certain specific requirements, such as when the customer's equipment needs to be designed in a miniaturized direction, the space of the equipment is very limited and it is impossible to install too many printheads. The existing solution that relies on increasing the number of white ink printheads to adapt to two spot color data channels and the use of white ink cannot meet the design requirements of such miniaturized equipment, limiting the application of the solution in such specific equipment, and is not conducive to the expansion of related equipment in the diversified development direction of miniaturization, flexibility, etc.

[0007] In summary, while existing solutions meet the needs of specific spot color data channels and white ink usage, there are urgent problems that need to be solved, such as increased customer costs due to the increase in the number of nozzles and unsuitability for miniaturized equipment design, which has prompted the need for the present invention to improve this technical field. Summary of the invention

[0008] In order to solve the above-mentioned technical problems, the present invention provides a printing method, device and storage medium for achieving 3D relief effect.

[0009] The technical solution of the present invention is achieved in this way:

[0010] A printing method for achieving a 3D relief effect comprises the following steps:

[0011] S1, import the print driver into the rip color calibration software;

[0012] S2, confirm the printing resolution according to the printing driver of step S1, and select the resolution matching the printer in the rip color calibration software;

[0013] S3, according to the print driver of step S1, using ink interception technology, confirming the maximum ink volume of a single channel and the maximum ink volume of a composite channel of the printer;

[0014] S4, according to the resolution data obtained in step S2 and step S3 and the maximum ink volume of a single channel and the ink volume of a composite channel, set the linearization data, and print and scan the linearization data;

[0015] S5, adjusting the linearized data according to step S4, confirming whether secondary linearization is required, and then saving the linearization file;

[0016] S6, performing an ICC file generation step according to the linear file obtained in step S5, printing and scanning the data printed by the reading device, and performing ICC file conversion;

[0017] S7, generating a curve file according to the ICC file obtained in step S6, importing the image for printing, selecting the printing resolution and the corresponding curve, and then printing the embossed pattern.

[0018] Preferably, in step S3, the maximum ink volume of a single channel of the printer is confirmed, specifically, the nozzle is set to single-channel printing, the ink volume is set to 100%, the printing medium is scanned after printing, the color saturation m of the printing medium is obtained, and then printing is performed, the inkjet volume is reduced by 5% each time printing until the inkjet volume closest to the color saturation m value is found, and then printing is performed again, the inkjet volume is increased by 1% each time printing until the inkjet volume K value with color saturation m value is found.

[0019] Preferably, in step S3, the maximum ink volume of the composite channel of the printer is confirmed by setting the inkjet volume of the composite channel to 100%, observing whether the printing medium has ink flow after printing, and if ink flow occurs, reducing the ink volume by 5% each time printing until the ink volume L value is found and the printing medium does not have ink flow.

[0020] Preferably, in step S4, the printing and scanning of the linearized data is specifically performed by setting a threshold of the linearized data, wherein the single channel threshold is a K value, and the composite channel threshold is an L value, and a linear reduction setting is performed according to the resolution of the printed image.

[0021] Preferably, in step S5, the linear data obtained in step S4 is first printed and previewed to confirm the color effect. When the gradient of the color effect cannot meet the relief effect required by the image, the linear data is adjusted multiple times and the adjusted linear data is saved.

[0022] Preferably, in the step S6, the printing and scanning of the data printed by the reading device is specifically to obtain the printing parameters of the printing device, and to match the linear data by adjusting the printing parameters.

[0023] A printing device for realizing 3D relief effect comprises at least one processor, at least one memory and computer program instructions stored in the memory. When the computer program instructions are executed by the processor, the above-mentioned method for realizing 3D relief effect is realized.

[0024] A storage medium stores computer program instructions, wherein when the computer program instructions are executed by a processor, the method for realizing a 3D relief effect is implemented.

[0025] The present invention solves the problem in the prior art that multiple nozzles are required to achieve 3D relief effects in a flat printer, and achieves the purpose of printing 3D relief effects with a single nozzle. The present invention finds the key ink volume value by accurately increasing or decreasing the ink spray volume and observing the ink flow situation, sets the decreasing linear ink volume through the ink volume threshold, and uses the linear ink volume to achieve the 3D relief effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a method for realizing 3D relief effect according to the present invention.

[0027] Figure 2 It is a schematic diagram of setting linearization data in step S4 of the present invention. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects taken by the present invention to achieve the predetermined invention purpose, exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of methods and systems consistent with some aspects of the present application as detailed in the attached claims.

[0029] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a printing method for achieving a 3D relief effect, comprising the following steps:

[0032] S1, import the print driver in the RIP color calibration software; open the RIP color calibration software, find the import option in the menu bar of the software's main interface, the software will automatically start importing the driver, during which the import progress bar will be displayed. Wait for the import process to complete. After the import is successful, the software interface will prompt relevant information, indicating that a connection with the printer has been successfully established.

[0033] S2, according to the print driver of step S1, confirm the print resolution, and select the resolution that matches the printer in the RIP color calibration software; after the RIP color calibration software successfully imports the print driver, it will display a series of resolution options supported by the current printer, which are expressed in dots per inch (dpi), and common ones include 300x300dpi, 600x600dpi, 720x720dpi, 1200x1200dpi and other different specifications. Different printers can support different resolution ranges due to differences in their hardware performance.

[0034] S3, according to the print driver of step S1, use the ink interception technology to confirm the maximum ink volume of a single channel of the printer and the maximum ink volume of a composite channel; preferably, in step S3, the maximum ink volume of a single channel of the printer is confirmed, specifically, the nozzle is set to single-channel printing, the ink volume is set to 100%, and the print medium is scanned after printing to obtain the color saturation m of the print medium, and then printing is performed, and the inkjet volume is reduced by 5% each time until the inkjet volume that is most similar to the color saturation m value is found, and then printing is performed again, and the inkjet volume is increased by 1% each time until the inkjet volume K value with color saturation m value is found.

[0035] Preferably, in step S3, the maximum ink volume of the composite channel of the printer is confirmed by setting the inkjet volume of the composite channel to 100%, observing whether the printing medium has ink flow after printing, and if ink flow occurs, reducing the ink volume by 5% each time printing until the ink volume L value is found and the printing medium does not have ink flow.

[0036] First, in the RIP color calibration software or the corresponding operation interface of the printer, set the nozzle to single-channel printing mode and select a specific color channel to be tested for operation. In the print settings, set the inkjet volume of the single channel to 100% initially, then create a simple test pattern file containing the pure color block of the color, send this test pattern file to the printer for printing, and after printing, use a professional color scanning device to scan the pure color block on the print medium. Before scanning, make sure that the scanning device is properly connected to the computer and the corresponding driver and scanning software are installed so that it can work properly. Open the scanning software, set the scanning resolution, color mode, scanning range and other parameters reasonably according to the operating requirements of the scanning device, then place the print medium with the pure color block flat on the scanning table of the scanning device, start the scanning operation, obtain the color saturation value corresponding to the pure color block, recorded as m, and then gradually reduce the inkjet volume of the single channel for repeated printing tests. Each time you print, reduce the inkjet volume by 5% based on the previous time, that is, the inkjet volume after the first reduction is 95%, the second is 90%, and so on. According to the same operation process as above, each time a test pattern containing a pure color block of the corresponding inkjet volume is printed, a new color saturation data is scanned after printing, and compared with the color saturation m value obtained for the first time, and this operation is continued until the inkjet volume value closest to the m value is found. This process requires careful observation and comparison of the changes in the color saturation data obtained from each scan to ensure the accuracy of the data. It may be necessary to repeat the scan and confirm multiple times to reduce the error. After finding the inkjet volume closest to the m value, a more precise adjustment range is used, that is, the inkjet volume is increased by 1% for further testing each time. For example, if the approximate inkjet volume found before is 70%, then the next step is to print, scan and compare the saturation with 71%, 72% and other inkjet volumes in turn, until the inkjet volume that can make the color saturation just reach the m value is accurately found, and this inkjet volume value is recorded as the maximum ink volume K value of the single channel (such as the cyan channel).

[0037] For each color channel in the four colors of CMYK, it is necessary to test in sequence according to the above steps to determine the respective maximum ink volume value K, which provides the key parameter basis for the subsequent linearization data setting. In the printing software, the inkjet volume of the composite channel is initially set to 100%, and then a test sample file containing a variety of color mixing patterns is created, and this test sample file is sent to the printer for printing. During the printing process, it is necessary to ensure that the printer is in the best working condition, including checking that the ink is sufficient, the nozzle is clean and accurately calibrated, and at the same time, the printing medium is placed flat, the position is accurate, and the printing environment is stable, so as to ensure that the printed test sample can accurately reflect the actual printing effect. After printing is completed, immediately observe carefully whether there is ink flow on the surface of the printing medium, that is, observe whether the ink flows along the paper texture and penetrates excessively, destroying the integrity and color accuracy of the pattern, and check whether there is ink accumulation and uneven diffusion in the different color mixing areas and the darker color areas. Once the ink flow phenomenon is found, the inkjet volume of the composite channel is gradually reduced for repeated printing tests. Each time you print, reduce the inkjet volume by 5% based on the previous one. For example, after the first reduction, the inkjet volume becomes 95%. Follow the above steps to print a test sample containing a mixed pattern of multiple colors. After printing, continue to observe whether there is still ink bleeding. Continue this operation until you find an inkjet volume value (recorded as L value) at which the printing medium no longer has ink bleeding. This L value is the maximum ink volume of the composite channel.

[0038] S4, according to the resolution data obtained in step S2 and step S3 and the maximum ink volume of a single channel and the ink volume of a composite channel, set the linearization data, and print and scan the linearization data;

[0039] Preferably, in step S4, the printing and scanning of the linearized data is specifically performed by setting a threshold of the linearized data, wherein the single channel threshold is a K value, and the composite channel threshold is an L value, and a linear reduction setting is performed according to the resolution of the printed image.

[0040] Preferably, in step S4, the linearization data is set, specifically, the linearity is set to be the linearity of an upper parabola, and the peak value of the upper parabola, that is, the single channel threshold K and the composite channel threshold L, the ink volume reduction amount is a, the number of reductions is x, and the a value changes with the reduction number x according to the upper parabola.

[0041] In step S4, since a higher resolution means that the pixel distribution in a unit area is denser, the amount of ink that can be carried is relatively more. At this time, the corresponding ink volume threshold (K and L) in the linearized data can be appropriately increased; on the contrary, the pixel distribution is sparse at a lower resolution. In order to avoid problems such as ink accumulation and excessive color mixing, the ink volume threshold should be reduced accordingly. For example, when the resolution is reduced from 1200x1200dpi to 600x600dpi, according to the preset rules (the specific adjustment ratio relationship can be obtained based on experience or multiple tests) and the above-mentioned functional relationship, the values ​​of K and L are adjusted accordingly, thereby changing the ink volume setting at different resolutions, ensuring that the ideal color transition and presentation effect can be achieved under different resolution conditions, and laying a good color foundation for the subsequent creation of 3D relief effects. According to this idea, according to the change law of the ink volume threshold corresponding to different resolutions, the ink volume parameters of each channel at different resolutions are accurately configured in the printing software, so that the ink volume change is consistent with the expected linearized color relationship (in the form of an upper parabola, etc.), ensuring that the color changes proportionally and naturally with the ink volume.

[0042] S5, adjusting the linearized data according to step S4, confirming whether secondary linearization is required, and then saving the linearization file;

[0043] Preferably, in step S5, the linear data obtained in step S4 is first printed and previewed to confirm the color effect. When the gradient of the color effect cannot meet the relief effect required by the image, the linear data is adjusted multiple times and the adjusted linear data is saved.

[0044] Send the generated linearization test file to the printer for printing. Before printing, confirm again that all settings of the printer are correct, including the selected print resolution, ink volume parameters of each channel, and print media type. At the same time, ensure that the printer is in good working condition, check that the ink is sufficient, the nozzle is clean and accurately calibrated, and maintain a stable printing environment (the ideal ambient temperature is generally controlled at 18℃-25℃, the relative humidity is between 40%-60%, and the printer is protected from external factors such as vibration and electromagnetic interference) to ensure that the printed linearization test sample can accurately reflect the color performance corresponding to the set linearization data, so that each color element on the test sample can present the corresponding color effect as expected. After printing, use a professional color scanning device to scan the linearization test sample. Before scanning, it is necessary to reasonably set the scanning resolution, color mode, scanning range and other parameters according to the operating requirements of the scanning device, so that the scanning device can accurately obtain the actual color data of each color element on the sample, and feed this data back to the RIP color calibration software to provide a basis for subsequent data adjustment. During the scanning process, ensure that the scanning equipment is stable to avoid problems such as blurred scanned images and color deviations, and ensure that the acquired scanned data is true and reliable and can accurately reflect the actual color of the printed sample.

[0045] S6, performing an ICC file generation step according to the linear file obtained in step S5, printing and scanning the data printed by the reading device, and performing ICC file conversion;

[0046] Preferably, in the step S6, the printing and scanning of the data printed by the reading device is specifically to obtain the printing parameters of the printing device, and to match the linear data by adjusting the printing parameters.

[0047] After printing, use professional color scanning equipment to scan the linearization test sample. Before scanning, according to the operating requirements of the scanning equipment, it is necessary to reasonably set the scanning resolution, color mode, scanning range and other parameters so that the scanning equipment can accurately obtain the actual color data of each color element on the sample, and feed these data back to the RIP color correction software to provide a basis for subsequent data adjustment. Whether there are still problems such as lack of three-dimensional sense, lack of three-dimensional sense (the color mixing does not reflect the proper concave and convex light and shadow feeling, affecting the presentation of the relief effect), through these detailed comparative analysis, accurately locate the specific area and form of expression where the actual color and the expected color have deviations, use the ink volume compensation tool to directly increase or decrease the corresponding ink volume value for color deviations in certain specific ink volume intervals, and make precise color corrections. For example, if it is found that the saturation of a certain color in the medium ink volume interval is always not ideal, the ink volume of the interval can be appropriately increased through the ink volume compensation function, and the color changes can be observed. Repeated adjustments are made until a satisfactory saturation effect is achieved to ensure that the color can be accurately presented at different ink volume stages, which is consistent with the color change law expected by the linearization data.

[0048] After completing the initial linearization data adjustment, it is necessary to comprehensively evaluate the overall color performance and whether the correspondence between color and ink volume has reached a relatively ideal linear state. For the complex color areas formed by the mixture of multiple colors under the composite channel, it is necessary to deeply evaluate whether the color mixing effect meets the theoretical expectations and the color layering and three-dimensional creation requirements required for the 3D relief effect, and whether there are still problems such as color imbalance and lack of three-dimensional sense caused by improper color mixing ratios. Ensure that the color mixing of the composite channel can accurately simulate the light and shadow changes caused by the uneven surface of the object, and reflect the three-dimensional visual experience that the relief effect should have.

[0049] If after the initial adjustment, it is still found that the linearity of some of the above color areas is not good, for example, the color deviation is still obvious at some ink volume nodes, the color transition is not smooth enough, the color mixing effect of the composite channel is not ideal, etc., then it is necessary to consider a secondary linearization operation. Secondary linearization means repeating the operation process of step S4, that is, resetting the linearization data, printing and scanning, obtaining new actual color data, and then returning to step S5 to process the data again according to the above analysis and adjustment process, and repeating this process until a satisfactory linear effect is achieved, ensuring that the corresponding relationship between color and ink volume can accurately meet the linearization requirements of the upper parabola shape.

[0050] S7, generating a curve file according to the ICC file obtained in step S6, importing the image for printing, selecting the printing resolution and the corresponding curve, and then printing the embossed pattern.

[0051] A printing device for realizing 3D relief effect comprises at least one processor, at least one memory and computer program instructions stored in the memory. When the computer program instructions are executed by the processor, the above-mentioned method for realizing 3D relief effect is realized.

[0052] A storage medium stores computer program instructions, wherein when the computer program instructions are executed by a processor, the method for realizing a 3D relief effect is implemented.

[0053] Example 2

[0054] The present invention provides a printing method for achieving a 3D relief effect, comprising the following steps:

[0055] S1, collect a large number of high-quality images containing different types of relief objects. These images should cover relief rendering effects under various styles, materials, and lighting conditions to ensure the diversity and representativeness of the data set. The image source can be professional photography websites, artwork databases, self-photographing and other channels. Ensure that the acquired images have clear textures, clear light and shadow relationships, and clearly recognizable relief features. Annotate each collected relief image in detail, focus on annotating the pixel areas corresponding to the raised and sunken parts of the relief in the image, and record the color saturation values ​​of these areas. For example, for an image of a relief wall of an ancient building, manually annotate the pixel areas where the raised decorative patterns of the relief pattern are located and their corresponding high-saturation color values, as well as the pixel areas of the sunken parts of the wall and their relatively low saturation values. Store these annotation information in one-to-one correspondence with the image to form a relief image dataset with accurate color saturation annotations, which provides accurate supervision information for subsequent neural network learning;

[0056] S2, preprocessing the collected and annotated image dataset to make it more suitable for neural network training. Normalizing the image size, adjusting all images to a fixed size, facilitates subsequent batch input into the neural network for processing, and also helps to improve the stability of model training;

[0057] S3, build a neural network, using the convolutional neural network (CNN) architecture for image feature learning as the basis, such as VGG network, ResNet network, etc., or design a relatively lightweight but effective convolutional neural network structure according to actual needs. These network architectures can effectively extract local and global features in images through the combination of components such as convolutional layers, pooling layers, and fully connected layers, and have good performance in learning the relationship between color saturation changes and spatial structures in relief images;

[0058] It includes an input layer that receives preprocessed image data, and its size is determined according to the size of the image after normalization; a combination of convolutional layers and pooling layers: multiple convolutional layers and pooling layers are set in sequence. The convolutional layer is used to extract local features of the image, and the image is scanned by convolution kernels of different sizes to generate feature maps; the pooling layer downsamples the feature map to reduce the amount of data while retaining the main features and improving computational efficiency. For example, three convolutional layers can be set, with the number of convolution kernels being 16, 32, and 64, respectively, and a step size of 1. A suitable activation function is used, and each convolutional layer is followed by a 2×2 maximum pooling layer to gradually extract the feature information of the image; a fully connected layer: after feature extraction by multiple convolutional pooling layers, the feature map is flattened into a one-dimensional vector, and several fully connected layers are connected to further integrate the feature information. The number of neurons in the fully connected layer can be gradually reduced, and the last fully connected layer outputs the dimensional information corresponding to the desired target result;

[0059] S4, select a suitable loss function to measure the difference between the output of the neural network and the color saturation information of the real annotation, so as to guide the network to continuously optimize parameters and reduce this difference during the training process. Commonly used loss functions such as the mean square error (MSE) loss function, which calculates the average square error between the predicted color saturation value and the real annotated saturation value, and minimizes this error to enable the network to learn the correct saturation change law to achieve accurate relief effect simulation. Assuming that the color saturation value predicted by the network is, the real annotated saturation value is, and the number of pixels in the image is, the calculation formula of the mean square error loss function is as follows:

[0060]

[0061] Preferably, a suitable optimization algorithm is selected to update the parameters of the neural network so that it converges in the direction of minimizing the loss function. Common optimization algorithms include stochastic gradient descent (SGD) and its variants, such as Adagrad, Adadelta, RMSProp, and Adam.

[0062] S5, specific training of the neural network model,

[0063] S51, divide the pre-processed annotated relief image dataset into a training set, a validation set, and a test set according to a certain ratio. For example, 70% of the images can usually be used as a training set for network parameter learning; 20% as a validation set, used to evaluate the performance of the model during the training process, and to adjust the model's hyperparameters based on the loss value, accuracy, and other indicators on the validation set to prevent overfitting; the remaining 10% as a test set, used to ultimately evaluate the model's generalization ability and effect on unseen data, and to measure the actual performance of the model;

[0064] S52, batch input the training set data into the constructed neural network model, and train according to the set loss function and optimization algorithm. In each round of training, the model will perform forward propagation on all image data in the training set in sequence, that is, calculate the predicted color saturation output from the input image through each layer of the network, and back-propagation operation, and continuously adjust the weights and biases of the network, so that the loss function value gradually decreases, and the model's ability to learn the law of color saturation changes in relief images gradually increases. During the training process, pay close attention to the changes in performance indicators on the validation set, such as calculating loss values, accuracy and other indicators on the validation set after a certain number of rounds of training;

[0065] S53, after completing the training, use the test set to conduct a final evaluation of the trained model, calculate the loss value, accuracy rate and some evaluation indicators related to the relief effect on the test set, and judge whether the model meets the expected performance requirements. If the model effect is not ideal, you can further analyze the reasons, such as whether there are problems such as insufficient data volume, unreasonable network architecture, improper hyperparameter settings, etc., and then make targeted improvements, such as increasing the size of the data set, adjusting the network structure, re-adjusting the hyperparameters, and re-training and evaluation until a model with satisfactory performance is obtained;

[0066] S6, input the ordinary images to which the relief effect needs to be added into the trained neural network model. These images can be in various formats, but they need to be preprocessed in the same way as the training data so that the model can correctly process and output the corresponding results; the model will analyze the input ordinary images, and output the color saturation adjustment value corresponding to each pixel according to the relief color saturation change law it has learned, and then adjust the color saturation of the input image based on these values. For example, for the pixel area in the image that is judged by the model to present a relief effect, its color saturation is increased; for the pixels judged to be sunken areas, their color saturation is reduced, thereby generating a new image with a relief effect;

[0067] S7, import the image with relief effect generated by neural network processing into the printing process, and perform color management operations according to the characteristics of the printer and the expected printing quality, including loading the appropriate ICC file and selecting the printing resolution that matches the printer; after completing the preparations such as color management and resolution setting, send the image to the printer for printing, ensure that the printer is in good working condition during the printing process, and finally output the printed work with relief effect, and observe whether the relief effect of the printed product meets the expectations, such as whether the three-dimensional effect is obvious and whether the color transition is natural.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A printing method for achieving 3D relief effect, characterized in that: The steps include: S1, import the print driver into the rip color calibration software; S2, confirm the printing resolution according to the printing driver of step S1, and select the resolution matching the printer in the color calibration software of RIP; S3, according to the print driver of step S1, using ink interception technology, confirming the maximum ink volume of a single channel and the maximum ink volume of a composite channel of the printer; S4, according to the resolution data obtained in step S2 and step S3 and the maximum ink volume of a single channel and the ink volume of a composite channel, set the linearization data, and print and scan the linearization data; S5, adjusting the linearized data according to step S4, confirming whether secondary linearization is required, and then saving the linearization file; S6, performing an ICC file generation step according to the linear file obtained in step S5, printing and scanning the data printed by the reading device, and performing ICC file conversion; S7, generating a curve file according to the ICC file obtained in step S6, importing the image for printing, selecting the printing resolution and the corresponding curve, and then printing the embossed pattern.

2. A printing method for achieving 3D relief effect according to claim 1, characterized in that: In step S3, the maximum ink volume of a single channel of the printer is confirmed, specifically, the nozzle is set to single-channel printing, the ink volume is set to 100%, the print medium is scanned after printing, the color saturation m of the print medium is obtained, and then printing is performed, the inkjet volume is reduced by 5% each time printing, until the inkjet volume closest to the color saturation m value is found, and then printing is performed again, the inkjet volume is increased by 1% each time printing, until the inkjet volume K value with color saturation m value is found.

3. A printing method for achieving 3D relief effect according to claim 1, characterized in that: In step S3, the maximum ink volume of the composite channel of the printer is confirmed by setting the inkjet volume of the composite channel to 100%, observing whether the printing medium has ink leakage after printing, and if ink leakage occurs, reducing the ink volume by 5% each time printing until the ink volume L value is found and the printing medium does not have ink leakage.

4. The printing method for achieving 3D relief effect according to claim 1, characterized in that: In the step S4, the printing and scanning of the linearized data is specifically performed by setting the threshold of the linearized data, the single channel threshold is the K value, the composite channel threshold is the L value, and the linear reduction setting is performed according to the resolution of the printed image.

5. The printing method for achieving 3D relief effect according to claim 1, characterized in that: In step S5, specifically, the linear data obtained in step S4 is first printed and previewed to confirm the color effect. When the gradient of the color effect cannot meet the relief effect required by the image, the linear data is adjusted multiple times and the adjusted linear data is saved.

6. The printing method for achieving 3D relief effect according to claim 1, characterized in that: In the step S6, the data printed by the printing and scanning reading device is specifically obtained by obtaining the printing parameters of the printing device and matching the linear data by adjusting the printing parameters.

7. A printing device for achieving 3D relief effect, characterized in that: The method comprises at least one processor, at least one memory and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method according to any one of claims 1 to 6 is implemented.

8. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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