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1. First of all, stabilize the printing conditions such as ink and paper after the process, and standardize the technical indicators such as ink brand grade, field density value, dot gain value and paper characteristics.
2. The input device, display device, and output device are debugged and set so that the devices are in a standard state, ensuring the stability, reliability, and repeatability of the color information in the transfer process.
3. Standards with color scales and step scales attempt to produce standard color proofs as the basis for adjusting screen colors.
4. Carefully adjust the screen colors to simulate the effects of the color proofs, so that the colors of the images seen on the screen are close to those of the proofs.
5. The standard color correction of the color correction based on the gray balance is made to suit the color reproduction of most originals.
These tasks are the scientific nature of our replication work and should be treated as a science. Although doing this task is more complicated and more difficult, and there are many variable factors, it is a basic work that must be done well. Only by doing this basic work can we ensure high quality and efficiency. Mass production.
2. Correction of original color defects
The original manuscripts currently used for copying are mostly non-compliant manuscripts, and there are many defects. Many customers require help in image processing. Therefore, in order to meet customer requirements, color correction is required. In the actual production, the adjustment defects mainly include: 1) The defects of the original due to underexposure or overexposure caused the color density to be darker, thicker, and lighter and thinner. 2 Due to the improper shooting and flushing, defects such as image color cast and old-gray color and insufficient saturation are caused. By adjusting to achieve better than manuscripts and gaining customer satisfaction and trust. This color adjustment should belong to the category of reproduction. Therefore, it is required that the operator first understand the requirements of the customer correctly; the second is to improve the aesthetic level and the analysis of manuscripts; to have a consensus with the painter, photographer, and other customers on the aesthetic side; and third, to be correct. Use color correction tools to achieve proper adjustment and compensation.
3. Performing aesthetic correction of heart color
In color correction, it is important to make some aesthetic adjustments to the colors of various kinds of manuscripts to enhance the artistic effects of color. Because color is not only a physical phenomenon, but also affected by people's heart factors, high-quality prints should be based on the visual heart from the color brightness, saturation and hue to color correction, so that it meets people's heart in the desired color , that is the heart color. E.g:
1 Timeliness A type of Illustrated, Book, Sample, etc. manuscript should be based on the impression of color and visual effects on the subject of the picture to make some modest exaggeration and rendering, such as Xiangshan red leaves can be corrected more red, some green grass, the sky More blue and so on, so as to enhance the artistic appeal of color, so as to make people appreciate the heart.
2 For artistic manuscripts such as paintings, arts and crafts, and art photography, on the one hand, the original should be used as the basis, and the tonality of the second manuscript should be adjusted as close to the tone of the original as possible; on the other hand, the color should be treated as true and natural. Coordinating and making some fine adjustments to the important colors of the picture, to highlight the faithful restoration of the artistic features and styles of the original works, so that they are in line with the appreciation of the artists, and at the same time, they can demonstrate the artistic quality of prints.
3 For the manuscript of a product packaging product, it should be emphasized that regardless of the quality of the original, when performing color correction, on the one hand, the actual color of the original object must be taken as the basis to fully reproduce the original color of the product; on the other hand, Adjust the saturation of color, emphasize the bright and strong color, to highlight the color characteristics of the product, thus attracting the customer's desire to buy. The above aesthetic adjustment of these inner colors is a color correction technology that belongs to the advanced stage, and is also the artistic nature of our reproduction work. We should treat it as an art. This requires the operators to work hard to improve their artistic understanding of color, as well as their ability to appreciate art, to correctly comprehend and analyze the characteristics, connotations and artistic features of various manuscripts, and to adjust them in accordance with the artistic laws of color in order to enhance the quality of printed matter. The artistic quality.
Clear Color Correction Concepts and Methods (3)
To sum up, the color errors caused by these factors need to be corrected according to the principles of color correction so as to restore the original color. So, how to restore the original color correction? It is necessary to strengthen color management. The color management of color prepress processing is to accurately control and standardize the color decomposition and color information transmission during the image processing, and accurately predict the color of the image at each stage. For example, the color of the image seen on the screen is the final proof or printed color, which is called WYSIWYG. At present, whether it is the use of traditional color management, or the use of automated color management, have to work hard and careful to do a few basic management.