3 Standardization of color management
Some color prints have poor color processing and cannot restore the original color tones. It is often seen that in order to make the screen visually colorful and disregarding the coordination relationship between colors, the unity law is very pure, heavy, and absolutely unique. In this way, although the effect is brilliant, the entire screen appears disorganized and unstructured. This is the current phenomenon that most operators only look at the colors on the computer screen, and only rely on arbitrary adjustments. This is a relatively common phenomenon.
1) Doing a good job in standardization and data color management is the most important basic work.
â— Based on the plate making and printing equipment of the company, according to the national industry standards, through production exploration, the technical parameters and quality standards of photoprinting, film printing (CTP), printing, proofing, printing, and materials are reasonably formulated. And make it possible to connect and stably complete batch high-fidelity replication of images.
â— Use standard gray scales, color scales, densitometers, and manuscripts for color reproduction tests to establish a set of gray balance parameter sets to ensure that gray and polychromatic colors in originals can be accurately restored.
â— Create a color correction quasi-correction amount based on the input gray balance to achieve the reduction of R, Y, G, C, B, M six hue to ensure the true reduction of original color. After doing the above work, when scanning color separation, as long as the correct black and white field settings are used, the original color tone can be restored, and it is unnecessary or rarely necessary to perform post-processing. Instead, it is adjusted using Photoshop software tools to satisfy the customer only. The requirements were adjusted for some defects in the manuscripts or the use of special effects and printability.
2) It is necessary to get out of the error area of ​​the current image scanning separation operation. The high-end professional scanner as a simple input device, its powerful professional adjustment functions are not used or not well used, and the black and white field calibration, level adjustment, color correction, clarity of emphasis are all easy to use Photoshop software Tool adjustment, often the parameters of each adjustment are not uniform, will result in unstable quality. In our practice, we have the experience that pictures scanned by high-end scanners and high-end electric extensions can only be patched, cut or stunted, and can't adjust picture levels, colors and sharpness, nor can they be enlarged. It is a prerequisite for improving quality and efficiency.
3) For the poor image of the original document, a senior map adjuster can be arranged to repair it. If necessary, according to the printing suitability, after the communication with the customer, there is a certain effect of properly selecting the appropriate contrast, sharpening or feathering.
4) Four principles for dealing with defects such as insufficient local color saturation
â— Additions and subtractions cannot be excessive. First, the additive color of the basic color should not be too large. To maintain the level of the basic color, it is not possible to create a level-parallel level due to an excessive amount of color. Secondly, the color amount of the opposite color cannot be too large. To maintain the change in light and shade, light and shadow in color, Can cause the color to be simplistic due to overuse of the opposite color, and cannot preserve the original tone of the image.
â— Maintain the relationship between the amount of color and the amount of light. When adjusting a certain color, the color amount of the bright-tuning portion cannot exceed the color amount of the midtone portion, and the color amount of the medium-adjustment portion cannot exceed the color amount of the dark tone portion, and the brightness and darkness of the color amount and the light amount level should be maintained. Shallow relationship.
â— Master the spatial variation of color distance. When adjusting a certain color, it is necessary to grasp the law of change when the color expresses the spatial distance, and to consider from the aesthetic point of view the relationship between the depth of field, the overall and the local, and the main and the minor.
â— Grasp the law of color change. When making color adjustments, attention should be paid to the coordination of the four parts of the light receiving surface, including highlights, bright surfaces, midtones, and dark surfaces.
Some color prints have poor color processing and cannot restore the original color tones. It is often seen that in order to make the screen visually colorful and disregarding the coordination relationship between colors, the unity law is very pure, heavy, and absolutely unique. In this way, although the effect is brilliant, the entire screen appears disorganized and unstructured. This is the current phenomenon that most operators only look at the colors on the computer screen, and only rely on arbitrary adjustments. This is a relatively common phenomenon.
1) Doing a good job in standardization and data color management is the most important basic work.
â— Based on the plate making and printing equipment of the company, according to the national industry standards, through production exploration, the technical parameters and quality standards of photoprinting, film printing (CTP), printing, proofing, printing, and materials are reasonably formulated. And make it possible to connect and stably complete batch high-fidelity replication of images.
â— Use standard gray scales, color scales, densitometers, and manuscripts for color reproduction tests to establish a set of gray balance parameter sets to ensure that gray and polychromatic colors in originals can be accurately restored.
â— Create a color correction quasi-correction amount based on the input gray balance to achieve the reduction of R, Y, G, C, B, M six hue to ensure the true reduction of original color. After doing the above work, when scanning color separation, as long as the correct black and white field settings are used, the original color tone can be restored, and it is unnecessary or rarely necessary to perform post-processing. Instead, it is adjusted using Photoshop software tools to satisfy the customer only. The requirements were adjusted for some defects in the manuscripts or the use of special effects and printability.
2) It is necessary to get out of the error area of ​​the current image scanning separation operation. The high-end professional scanner as a simple input device, its powerful professional adjustment functions are not used or not well used, and the black and white field calibration, level adjustment, color correction, clarity of emphasis are all easy to use Photoshop software Tool adjustment, often the parameters of each adjustment are not uniform, will result in unstable quality. In our practice, we have the experience that pictures scanned by high-end scanners and high-end electric extensions can only be patched, cut or stunted, and can't adjust picture levels, colors and sharpness, nor can they be enlarged. It is a prerequisite for improving quality and efficiency.
3) For the poor image of the original document, a senior map adjuster can be arranged to repair it. If necessary, according to the printing suitability, after the communication with the customer, there is a certain effect of properly selecting the appropriate contrast, sharpening or feathering.
4) Four principles for dealing with defects such as insufficient local color saturation
â— Additions and subtractions cannot be excessive. First, the additive color of the basic color should not be too large. To maintain the level of the basic color, it is not possible to create a level-parallel level due to an excessive amount of color. Secondly, the color amount of the opposite color cannot be too large. To maintain the change in light and shade, light and shadow in color, Can cause the color to be simplistic due to overuse of the opposite color, and cannot preserve the original tone of the image.
â— Maintain the relationship between the amount of color and the amount of light. When adjusting a certain color, the color amount of the bright-tuning portion cannot exceed the color amount of the midtone portion, and the color amount of the medium-adjustment portion cannot exceed the color amount of the dark tone portion, and the brightness and darkness of the color amount and the light amount level should be maintained. Shallow relationship.
â— Master the spatial variation of color distance. When adjusting a certain color, it is necessary to grasp the law of change when the color expresses the spatial distance, and to consider from the aesthetic point of view the relationship between the depth of field, the overall and the local, and the main and the minor.
â— Grasp the law of color change. When making color adjustments, attention should be paid to the coordination of the four parts of the light receiving surface, including highlights, bright surfaces, midtones, and dark surfaces.
Source: "Printing World"
Author: yellow leather
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