1. Create a high-simulation copy color management system
The color management of art reproduction technology refers to the management of the transfer of color spaces (such as scanners, monitors, and inkjet printers). Color management requires the color information to be as consistent as possible during the three processes of input, processing, and output, but the color expression in the transmission process involves not the same software and hardware for the color expression. Therefore, to maintain consistency and stability in the transmission of color information, standardized color management must be implemented.
The high-simulation replication technology of digital printing researched and developed in this paper is to use coated rice paper, silk + new technology (Epson Stylus Pro 9800 inkjet printer) + new software (EFI color management software) to perform color management with high simulation reproduction .
Second, the method and steps of high simulation copy color management
High simulation copy color management should use a standard ambient light source to keep the indoor light constant, so that the original color of the artwork is basically the same as the screen color and coated rice paper printing color. The following two aspects should be considered when selecting the light source: First, the better color temperature. The international standard standard recommends basic observation lighting as a CIED50 standardized light source that matches the daylight spectral distribution of the relevant color temperature at 50000K. The second is a fluorescent tube with a high display index, R value should be greater than 95% of the spectral display characteristics. The experiment uses the fluorescent tube of German JUS company to show that the index is 97% and can fully reflect the true color of the illuminated object.
(1) Color management of the scanner
One of the key links in the high-simulation copying of artworks is to perform physical scanning of the original work, and obtain all the required information from the original work at the beginning of the scan. This requires calibration of the scanner. # p # subtitle # e # The purpose of scanner calibration is to correct the brightness, contrast, and black and white fields of the scanning device to ensure that when the scanner is initialized to zero, the same original can be obtained the same time no matter when it is scanned. Image data. To achieve this goal, a scanner characteristic file must be established. Scanner calibration and characteristic file generation are accomplished with the help of 1T8.7 / 1 (standard transmission manuscript for scanning) or 1T8.7 / 2 (standard reflection manuscript for scanning) standard manuscript and scanner characteristic file generation software. The following are the specific steps for scanner calibration and characteristic file generation with the help of scanner characteristic file generation software Scanopen.
1. Turn on the scanner and the heat pipe 30 minutes in advance to ensure that the light emission of the lamp reaches a normal and stable state.
2. Clean the glass of the flatbed scanner stage.
3. When using the flatbed scanner, pay attention to align the edge of the color card with the frame of the stage to prevent the scanned image from tilting.
4. Start the scanning application, clear all the color adjustment, control and management options of the scanner, set the scanner, and record the setting status of the scanner in detail.
5. Open Scanopen, click "Start Generating Feature File", follow the prompts to select the entire color card, and then click the "Scan" button to scan the color card picture.
6. Check the "upper left corner", "upper right corner" and "lower right corner" of the color card according to the prompts.
7. Click the "Create Feature File" button to create an ICC feature file for the scanner. The feature file is completed.
8. Load test file and reference file: open the color management application software again, enter the color management option of the scanner, enter the digital image obtained by the scan card, that is, the test file, and then select the corresponding reference file in the reference folder, Click the "Open" button to send the selected reference file to the color management application software.
9. Create and save the configuration file: Click the "Create Configuration File" button to pop up the Save Configuration File dialog box.
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