Image color consistency adjustment method and device, equipment and storage medium

Abstract

The application discloses an image color consistency adjustment method and device, equipment and a storage medium, and relates to the technical field of image processing. The method obtains first color data through a first color block printed product and obtains second color data after collecting the first color block printed product. Then, color adjustment is performed on an electronic manuscript corresponding to a sample image provided by a customer according to the first color data and the second color data. Finally, printing and copying are performed according to the adjusted sample image electronic manuscript (color correction image electronic manuscript), so that the color consistency between the finally obtained image and the sample image provided by the customer is maintained. Compared with a color correction effect of a technical solution of manual color adjustment, the color consistency is better, and the efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of image processing technology, and in particular to a method, apparatus, device, and storage medium for adjusting image color consistency. Background Technology

[0002] Color management aims to adjust and manage colors at various stages of actual production applications through software and hardware, thereby achieving color consistency throughout the entire production process. In actual production, it is often necessary to print copies based on sample images provided by the customer to obtain printed products with colors consistent with the sample image (also known as customer sample reproduction). Currently, customer sample reproduction is achieved by using image acquisition equipment (scanner, camera) to capture the pattern and color information of the sample image to obtain an electronic image, using a printer to print the electronic image into a physical printed product, and then manually adjusting the colors of the electronic image based on the color differences between the customer sample and the printed product. Typically, the number of color adjustments required depends on the experience and skill level of the color adjuster, resulting in high uncertainty, low efficiency, and poor sample reproduction results.

[0003] Furthermore, variations in usage time, temperature, and humidity can cause color deviations in the output of image acquisition devices when capturing the same physical sample. Besides the image acquisition device itself, changes in environment and printhead condition can also lead to color deviations in printer output, further exacerbating the color difference between the customer's sample and the final printed product. In these cases, color management software such as i1 Profiler is often used to calibrate image acquisition devices like scanners and cameras using International Characteristic Profiles (ICC) to control their stability. For printers, RIP software is used for color calibration to stabilize the printer's colors. However, these methods only adjust the stability of the equipment itself and do not substantially help in replicating customer samples and ensuring color consistency; therefore, they cannot improve the color reproduction of the sample. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide an image color consistency adjustment method, apparatus, device and storage medium to solve the problem of poor color reproduction effect in the sample replication process in the prior art.

[0005] In a first aspect, embodiments of the present invention provide an image color consistency adjustment method, the method comprising:

[0006] Print the electronic copy of the first color block image to obtain the printed version of the first color block image;

[0007] Obtain the color information from the first color block print to obtain the first color data;

[0008] Collect the printed copy of the first color block image and generate an electronic copy of the second color block image;

[0009] Print the electronic copy of the second color block image to obtain the printed copy of the second color block image;

[0010] Obtain the color information from the printed product of the second color block image to obtain the second color data;

[0011] The sample image is then copied after color adjustment based on the first color data and the second color data.

[0012] Preferably, the step of copying the sample image based on the first color data and the second color data includes:

[0013] Acquire sample images and generate electronic copies of the sample images;

[0014] The sample image electronic copy is color-adjusted based on the first color data and the second color data to generate a color-corrected image electronic copy.

[0015] The sample image is copied based on the electronic copy of the color-corrected image.

[0016] Preferably, the step of adjusting the color of the sample image electronic copy based on the first color data and the second color data to generate a color-corrected image electronic copy includes:

[0017] The first color management configuration file and the first color gamut space are obtained based on the first color data;

[0018] Obtain the second color management configuration file and the second color gamut space based on the second color data;

[0019] Establish a color gamut mapping relationship between the first color gamut space and the second color gamut space;

[0020] The sample image electronic copy is color-adjusted according to the color gamut mapping relationship to generate a color-corrected image electronic copy.

[0021] Preferably, the step of adjusting the color of the sample image electronic copy according to the color gamut mapping relationship to generate a color-corrected image electronic copy includes:

[0022] Obtain the color data of the electronic copy of the sample image, and record it as the third color data;

[0023] Obtain the color point corresponding to the third color data in the second color gamut space, and obtain the mapping point corresponding to the color point in the first color gamut space according to the color gamut mapping relationship;

[0024] Obtain the color data corresponding to the mapping point, and denote it as the fourth color data;

[0025] The color of the sample image is adjusted accordingly based on the fourth color data to generate the color-corrected image.

[0026] Preferably, the step of adjusting the color of the sample image electronic copy based on the first color data and the second color data to generate a color-corrected image electronic copy includes:

[0027] Obtain the color mapping relationship based on the first color data and the second color data;

[0028] The sample image electronic copy is color-adjusted according to the color mapping relationship to generate a color-corrected image electronic copy.

[0029] Preferably, the first color block image includes several color blocks with different color data.

[0030] Preferably, a spectrophotometer is used to obtain the color information of the first color block print and the second color block print, and a scanner, camera or video camera is used to capture the first color block print to generate an electronic copy of the second color block print.

[0031] Secondly, embodiments of the present invention provide an image color consistency adjustment device, the device comprising:

[0032] The first printing module is used to print the electronic copy of the first color block image to obtain the printed product of the first color block image;

[0033] The first color data acquisition module is used to acquire color information in the first color block print to obtain first color data.

[0034] The first acquisition module is used to acquire the first color block image print and generate a second color block image electronic copy.

[0035] The second printing module is used to print the electronic copy of the second color block image to obtain a printed copy of the second color block image.

[0036] The second color data acquisition module is used to acquire color information from the second color block print to obtain second color data.

[0037] The adjustment module is used to adjust the color of the sample image according to the first color data and the second color data, and then copy it.

[0038] Thirdly, embodiments of the present invention provide an image color consistency adjustment device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, wherein when the computer program instructions are executed by the processor, the method of the first aspect described above is implemented.

[0039] Fourthly, embodiments of the present invention provide a storage medium storing computer program instructions, which, when executed by a processor, implement the method of the first aspect described above.

[0040] In summary, the beneficial effects of the present invention are as follows:

[0041] The image color consistency adjustment method, apparatus, device, and storage medium provided in this invention obtain first color data from a first color block image print and then obtain second color data after collecting the first color block image print. Then, based on the first and second color data, the electronic copy corresponding to the sample image provided by the customer is color-adjusted. Finally, the adjusted sample image electronic copy (color-corrected image electronic copy) is printed and copied. This achieves color consistency between the final printed image and the sample image provided by the customer, resulting in better color consistency and higher efficiency compared to color correction methods using manual color adjustment. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0043] Figure 1 This is a flowchart illustrating the image color consistency adjustment method according to an embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of the first color block diagram according to an embodiment of the present invention.

[0045] Figure 3 yes Figure 1 A schematic diagram of the specific process for step S7.

[0046] Figure 4 yes Figure 1 Another specific flowchart for step S7.

[0047] Figure 5 This is a schematic diagram of the image color consistency adjustment device according to an embodiment of the present invention.

[0048] Figure 6 This is a schematic diagram of the image color consistency adjustment device according to an embodiment of the present invention. Detailed Implementation

[0049] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, 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 only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can 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 invention.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0051] Example 1

[0052] This invention provides an image color consistency adjustment method. The method is suitable for using image acquisition devices such as scanners and cameras to acquire sample patterns and colors to generate electronic images, and then adjusting or correcting the colors of the electronic images so that the products printed based on the corrected electronic images have good color consistency with the samples provided by the customer.

[0053] Please see Figure 1 The method includes the following steps:

[0054] S1: Print the electronic copy of the first color block image to obtain the printed copy of the first color block image;

[0055] S2: Obtain the color information in the first color block print to get the first color data;

[0056] S3: Collect the printed copy of the first color block image and generate an electronic copy of the second color block image;

[0057] S4: Print the electronic copy of the second color block image to obtain the printed copy of the second color block image;

[0058] S5: Obtain the color information in the second color block print to obtain the second color data;

[0059] S6: After adjusting the color of the sample image according to the first color data and the second color data, copy it.

[0060] Specifically, the first color block image can be an electronic image designed by the user according to actual production and application conditions, or it can be an electronic color block image provided by an image acquisition equipment provider or color card supplier. The electronic version of the first color block image is stored in a computer or a host computer in a printing system, and can be displayed through an image display device such as a monitor. Preferably, the first color block image includes multiple color blocks with different color values, that is, each color block has a different color value. These color values ​​can be RGB values, CMYK values, or Lab values. For example, such as... Figure 2 The image shown is a schematic diagram of a first color block image. A first color block image can contain as many color blocks as possible with different color values. The more color blocks in the first color block image, the more color data is obtained, and the more accurate the subsequent color calibration will be.

[0061] The printer is controlled to print the first color block image (electronic version of the first color block image), recorded electronically, onto a substrate to obtain a printed product of the first color block image. The substrate can be paper, wood, glass, crystal, PVC, ABS, acrylic, metal, plastic, stone, leather, cloth, or other textiles. After obtaining the printed product of the first color block image, a color value acquisition device is used to obtain the color information of each color block in the printed product, resulting in first color data. Preferably, a spectrophotometer is used to obtain the color information of the printed product of the first color block image, and the obtained first color data is the spectral value corresponding to each color block. In other embodiments, the first color data obtained by the color value acquisition device can also be the Lab value or XYZ value corresponding to each color block.

[0062] Furthermore, an image acquisition device is used to capture the image of the first color block printout, generating a second color block electronic copy. This image acquisition device can be a scanner, camera, video camera, etc., capable of converting the image (physical image) of the first color block printout into an electronic document. Due to differences in color spaces between the printer, image acquisition device, and other devices, the color values ​​of each color block in the second color block electronic copy obtained by the image acquisition device are not entirely the same as the color values ​​of each color block in the first color block electronic copy. Therefore, after printing the second color block electronic copy to obtain the second color block printout, the second color data obtained by a spectrophotometer or other color value acquisition device is also not entirely the same as the first color data. The data type of the second color data is the same as that of the first color data; it can be a spectral value, or a Lab value, or an XYZ value. For example, when the first color data is a spectral value, the second color data will correspondingly be a spectral value, or when the first color data is a Lab value, the second color data will correspondingly be a Lab value. In this embodiment, the first color data and the second color data are used to adjust (calibrate) the color of the sample image provided by the customer so that the final printed image product has the same color as the image of the sample provided by the customer.

[0063] In one embodiment, copying the sample image based on the first color data and the second color data includes:

[0064] Acquire sample images and generate electronic copies of the sample images;

[0065] The sample image electronic copy is color-adjusted based on the first color data and the second color data to generate a color-corrected image electronic copy.

[0066] The sample image is copied based on the electronic copy of the color-corrected image.

[0067] Color adjustment of a sample image provided by a customer requires using an image acquisition device (such as a scanner, camera, or video camera) capable of converting the sample image into an electronic version (denoted as the electronic sample image). Then, the electronic sample image is color-adjusted (calibrated) using the correspondence between first and second color data, resulting in a color-corrected electronic sample image (denoted as the color-corrected electronic image). Finally, the printer is controlled to print the color-corrected electronic image, ensuring that the printed product's color matches the customer-provided sample image, thus reproducing the customer's sample. Please refer to [link to relevant documentation]. Figure 3 In one embodiment, adjusting the color of the sample image electronic copy based on the first color data and the second color data to generate a color-corrected image electronic copy includes the following steps:

[0068] S71: Obtain the first color management configuration file and the first color gamut space based on the first color data;

[0069] S72: Obtain the second color management configuration file and the second color gamut space based on the second color data;

[0070] S73: Establish the color gamut mapping relationship between the first color gamut space and the second color gamut space;

[0071] S74: Adjust the color of the sample image electronic copy according to the color gamut mapping relationship to generate a color-corrected image electronic copy.

[0072] Specifically, a first color management configuration file corresponding to the printer is generated based on the acquired first color data, and a second color management configuration file corresponding to the printer and image acquisition device (such as a scanner) is generated based on the acquired second color data (acquiring color swatches and generating corresponding color management configuration files such as ICC files is a common technique in this field, so the specific process will not be elaborated further). This is because the first color data is the color data obtained from printing a first color swatch electronic copy, which records or reflects the printer's color characteristics and color gamut range. The second color data is the color data obtained by the image acquisition device acquiring the first color swatch print to obtain a second color swatch electronic copy, then printing the second color swatch print, and then acquiring the second color swatch again. This second color data records or reflects the color characteristics and color gamut range of the image acquisition device and printer. To ensure that the customer's sample maintains consistent color or reproduces colors without distortion after being scanned by an image acquisition device such as a scanner, this embodiment obtains the color gamut mapping relationship between the two devices based on the first and second color management feature files, and adjusts the color of the sample image electronic copy according to this color gamut mapping relationship.

[0073] The color gamut space corresponding to the printer can be obtained from the first color management configuration file, denoted as the first color gamut space or the target color gamut space. The color gamut space corresponding to the image acquisition device such as the scanner can be obtained from the second color management configuration file, denoted as the second color gamut space or the source color gamut space. Color gamut mapping is performed, mapping each color point (one color point corresponds to one color value) corresponding to the second color gamut space (source color gamut space) to the first color gamut space (target color gamut space). The mapping point corresponding to each color point in the second color gamut space in the first color gamut space is obtained, and the color value corresponding to each color point in the second color gamut space in the first color gamut space is obtained based on the mapping point.

[0074] In one embodiment, adjusting the color of the sample image electronic file according to the color gamut mapping relationship to generate a color-corrected image electronic file includes:

[0075] S741: Obtain the color data of the electronic copy of the sample image, and record it as the third color data;

[0076] S742: Obtain the color point corresponding to the third color data in the second color gamut space, and obtain the mapping point corresponding to the color point in the first color gamut space according to the color gamut mapping relationship;

[0077] S743: Obtain the color data corresponding to the mapping point, and record it as the fourth color data;

[0078] S744: Adjust the color of the sample image electronic copy according to the fourth color data to generate the color-corrected image electronic copy.

[0079] The sample image is input into image processing software such as RIP software. The color gamut space corresponding to the printer (the first color gamut space) is used as the target color gamut space, and the color gamut space corresponding to the image acquisition device (the second color gamut space) is used as the source color gamut space for mapping. This results in a color-corrected electronic image. Printing this color-corrected electronic image ensures that the printed product matches the sample color. Specifically, the color data in the sample image is obtained through RIP software and denoted as the third color data. The color gamut space of the third color data is the second color gamut space. Using the color gamut mapping relationship, the color points corresponding to the third color data are mapped to the first color gamut space, obtaining the mapped points of these points. The color data corresponding to these mapped points is then obtained and denoted as the fourth color data. The colors in the sample image are adjusted using the fourth color data, resulting in the color-corrected electronic image. Using color gamut mapping for color adjustment provides better color correction results, higher color consistency, and higher efficiency compared to methods such as manual color adjustment.

[0080] Ideally, users want what they see is what they get (i.e., the printed product's colors match the first color block image's electronic copy). However, the electronic copy of the image (the second color block image) acquired by an image acquisition device such as a scanner is not completely consistent with the original first color block image's electronic copy. Consequently, the printed product's colors will not match the first color block image's printed product. To eliminate this color inconsistency, the second color data and the first color data can be mapped to obtain a corresponding mapping relationship. When printing customer samples, this mapping relationship can be used to adjust the sample image electronic copy acquired by the image acquisition device such as a scanner, thereby ensuring that the final printed product's colors match the customer's sample.

[0081] Please participate Figure 4 In another embodiment, adjusting the color of the sample image electronic copy based on the first color data and the second color data to generate a color-corrected image electronic copy includes:

[0082] S710: Obtain the color mapping relationship based on the first color data and the second color data;

[0083] S720: Adjust the color of the sample image electronic copy according to the color mapping relationship to generate a color-corrected image electronic copy.

[0084] Specifically, using the first color data as the image and the second color data as the original image, a mapping relationship is established between the first color data and the second color data, denoted as the color mapping relationship. Then, the electronic copy of the sample image is color-adjusted according to this color mapping relationship. The steps include:

[0085] S7201: Obtain the color data of the electronic copy of the sample image, and record it as the third color data;

[0086] S7202: Obtain the mapping value corresponding to the third color data according to the color mapping relationship;

[0087] S7203: Adjust the color of the sample image electronic copy according to the mapping value to generate a color-corrected image electronic copy.

[0088] Color data of the sample image electronic file is obtained using image processing software such as RIP software and denoted as third color data. The mapping value corresponding to the third color data is obtained according to the color mapping relationship. Finally, the color of the sample image electronic file is adjusted according to the mapping value to generate a color-corrected image electronic file. In this embodiment, color correction is performed using the data mapping relationship between the first color data and the second color data, which is simpler, faster, and more efficient.

[0089] In summary, the image color consistency adjustment method provided by this invention obtains first color data from a first color block print and then obtains second color data from the first color block print. Then, it adjusts the color of the electronic copy corresponding to the sample image provided by the customer based on the first and second color data. Finally, it prints and copies the adjusted sample image (color-corrected image). This method achieves color consistency between the final printed product and the sample image provided by the customer, resulting in better color consistency and higher efficiency compared to color correction methods using manual color adjustment.

[0090] Example 2

[0091] Please see Figure 5 This invention provides an image color consistency adjustment device, the device 200 comprising:

[0092] The first printing module 201 is used to print the electronic copy of the first color block image to obtain the printed product of the first color block image;

[0093] The first color data acquisition module 202 is used to acquire color information in the first color block print to obtain first color data;

[0094] The first acquisition module 203 is used to acquire the first color block image print and generate a second color block image electronic copy.

[0095] The second printing module 204 is used to print the electronic copy of the second color block image to obtain a printed copy of the second color block image.

[0096] The second color data acquisition module 205 is used to acquire color information in the second color block print to obtain second color data.

[0097] The adjustment module 206 is used to adjust the color of the sample image according to the first color data and the second color data, and then copy it.

[0098] Preferably, the adjustment module 206 includes:

[0099] The second acquisition unit is used to acquire sample images and generate electronic copies of the sample images.

[0100] The color correction module unit is used to adjust the color of the sample image electronic copy according to the first color data and the second color data, and generate a color-corrected image electronic copy.

[0101] The third printing module unit is used to print and copy the sample image based on the electronic copy of the color calibration image.

[0102] Preferably, the color calibration unit includes:

[0103] The first color gamut space acquisition unit is used to acquire a first color management configuration file and a first color gamut space based on the first color data.

[0104] The second color gamut space acquisition unit is used to acquire the second color management configuration file and the second color gamut space based on the second color data.

[0105] A color gamut mapping unit is used to establish a color gamut mapping relationship between the first color gamut space and the second color gamut space;

[0106] The adjustment unit is used to adjust the color of the sample image electronic copy according to the color gamut mapping relationship, and generate a color-corrected image electronic copy.

[0107] Furthermore, the first adjustment unit includes:

[0108] The third color data acquisition unit is used to acquire the color data of the electronic copy of the sample image, denoted as the third color data;

[0109] A mapping point acquisition unit is used to acquire the color point corresponding to the third color data in the second color gamut space, and to acquire the mapping point corresponding to the color point in the first color gamut space according to the color gamut mapping relationship.

[0110] The fourth color data acquisition unit is used to acquire the color data corresponding to the mapping point, denoted as the fourth color data;

[0111] The first adjustment unit is used to adjust the color of the sample image electronic copy according to the fourth color data, and generate the color-corrected image electronic copy.

[0112] Preferably, the color calibration unit includes:

[0113] A mapping relationship acquisition unit is used to acquire a color mapping relationship based on the first color data and the second color data;

[0114] The second adjustment unit is used to adjust the color of the sample image electronic copy according to the color mapping relationship, and generate a color-corrected image electronic copy.

[0115] Preferably, the first color block image includes several color blocks with different color data.

[0116] Preferably, a spectrophotometer is used to acquire the color information of the first and second color block image prints, and a scanner, camera, or video camera is used to capture the first color block image print to generate a second color block image electronic copy. In summary, the image color consistency adjustment device provided by this embodiment of the invention acquires first color data from the first color block image print and then acquires second color data after capturing the first color block image print; then, it adjusts the color of the electronic copy corresponding to the sample image provided by the customer based on the first and second color data; finally, it prints and copies the adjusted sample image electronic copy (color-corrected image electronic copy), achieving color consistency between the final printed image and the sample image provided by the customer. This method is superior to color correction methods using manual color adjustment techniques, resulting in better color consistency and higher efficiency.

[0117] Example 3

[0118] In addition, the image color consistency adjustment method of this invention can be implemented by an image color consistency adjustment device. Figure 6 A schematic diagram of the hardware structure of the image color consistency adjustment device provided in an embodiment of the present invention is shown.

[0119] The image color consistency adjustment device may include a processor 301 and a memory 302 storing computer program instructions.

[0120] Specifically, the processor 301 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of the present invention.

[0121] Memory 302 may include mass storage for data or instructions. For example, and not limitingly, memory 302 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 302 may include removable or non-removable (or fixed) media. Where appropriate, memory 302 may be internal or external to a data processing device. In a particular embodiment, memory 302 is a non-volatile solid-state memory. In a particular embodiment, memory 302 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0122] The processor 301 reads and executes computer program instructions stored in the memory 302 to implement any of the image color consistency adjustment methods in the above embodiments.

[0123] In one example, the image color consistency adjustment device may further include a communication interface 303 and a bus 310. Wherein, as Figure 6 As shown, the processor 301, memory 302, and communication interface 303 are connected through bus 310 and complete communication with each other.

[0124] The communication interface 303 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of the present invention.

[0125] Bus 310 includes hardware, software, or both, that couples components of an image color consistency adjustment device together. For example, and not as a limitation, bus 310 may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 310 may include one or more buses. While specific buses are described and illustrated in embodiments of the invention, the invention contemplates any suitable bus or interconnect.

[0126] Example 4

[0127] Furthermore, in conjunction with the image color consistency adjustment method in the above embodiments, this invention can be implemented using a computer-readable storage medium. This computer-readable storage medium stores computer program instructions; when these computer program instructions are executed by the processor 301, they implement any one of the image color consistency adjustment methods in the above embodiments.

[0128] In summary, the image color consistency adjustment method, apparatus, device, and storage medium provided in this embodiment of the invention obtain first color data from a first color block print and then obtain second color data after collecting the first color block print; then, the color of the electronic copy corresponding to the sample image provided by the customer is adjusted according to the first color data and the second color data; finally, the adjusted sample image electronic copy (color-corrected image electronic copy) is printed and copied, achieving color consistency between the final image printed product and the sample image provided by the customer. Compared with color correction solutions using manual color adjustment and other techniques, this method has better color consistency and higher efficiency.

[0129] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0130] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0131] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0132] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A method for adjusting image color consistency, characterized in that, The method includes: Print the electronic copy of the first color block image to obtain the printed version of the first color block image; Obtain the color information from the first color block print to obtain the first color data; Collect the printed copy of the first color block image and generate an electronic copy of the second color block image; Print the electronic copy of the second color block image to obtain the printed copy of the second color block image; Obtain the color information from the printed product of the second color block image to obtain the second color data; The sample image is copied after color adjustment based on the first color data and the second color data; wherein, copying the sample image based on the first color data and the second color data includes: Acquire sample images and generate electronic copies of the sample images; The sample image electronic copy is color-adjusted based on the first color data and the second color data to generate a color-corrected image electronic copy. The sample image is copied based on the electronic copy of the color-corrected image; The step of adjusting the color of the sample image electronic copy based on the first color data and the second color data to generate a color-corrected image electronic copy includes: The first color management configuration file and the first color gamut space are obtained based on the first color data; Obtain the second color management configuration file and the second color gamut space based on the second color data; Establish a color gamut mapping relationship between the first color gamut space and the second color gamut space; The sample image electronic copy is color-adjusted according to the color gamut mapping relationship to generate a color-corrected image electronic copy. The step of adjusting the color of the sample image electronic copy according to the color gamut mapping relationship to generate a color-corrected image electronic copy includes: Obtain the color data of the electronic copy of the sample image, and record it as the third color data; Obtain the color point corresponding to the third color data in the second color gamut space, and obtain the mapping point corresponding to the color point in the first color gamut space according to the color gamut mapping relationship; Obtain the color data corresponding to the mapping point, and denote it as the fourth color data; The color of the sample image is adjusted accordingly based on the fourth color data to generate the color-corrected image.

2. The image color consistency adjustment method according to claim 1, characterized in that, The first color block image includes several color blocks with different color data.

3. The image color consistency adjustment method according to claim 1, characterized in that, The color information of the first color block image print and the second color block image print is obtained using a spectrophotometer, and the first color block image print is captured using any one of a scanner, camera or video camera to generate an electronic copy of the second color block image.

4. An image color consistency adjustment device, characterized in that, The device includes: The first printing module is used to print the electronic copy of the first color block image to obtain the printed product of the first color block image; The first color data acquisition module is used to acquire color information in the first color block print to obtain first color data. The first acquisition module is used to acquire the first color block image print and generate a second color block image electronic copy. The second printing module is used to print the electronic copy of the second color block image to obtain a printed copy of the second color block image. The second color data acquisition module is used to acquire color information from the second color block print to obtain second color data. The adjustment module is used to adjust the color of a sample image according to the first color data and the second color data, and then copy it; it includes: acquiring a sample image and generating an electronic copy of the sample image; adjusting the color of the electronic copy of the sample image according to the first color data and the second color data, and generating a color-corrected image electronic copy; and copying the sample image according to the color-corrected image electronic copy; wherein adjusting the color of the electronic copy of the sample image according to the first color data and the second color data and generating the color-corrected image electronic copy includes: obtaining a first color management configuration file and a first color gamut space according to the first color data; and obtaining a second color tube according to the second color data. The process involves: configuring a configuration file and a second color gamut space; establishing a color gamut mapping relationship between the first and second color gamut spaces; adjusting the color of the sample image electronic file according to the color gamut mapping relationship to generate a color-corrected image electronic file, including: acquiring color data of the sample image electronic file, denoted as third color data; acquiring the color point corresponding to the third color data in the second color gamut space, and acquiring the mapping point corresponding to the color point in the first color gamut space according to the color gamut mapping relationship; acquiring the color data corresponding to the mapping point, denoted as fourth color data; and adjusting the color of the sample image electronic file accordingly based on the fourth color data to generate the color-corrected image electronic file.

5. An image color consistency adjustment device, characterized in that, include: 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 as described in any one of claims 1-3.

6. A storage medium storing computer program instructions thereon, characterized in that, When the computer program instructions are executed by a processor, the method as described in any one of claims 1-3 is implemented.

Images