Digital proof color correcting method and digital proof color correcting device

Abstract

The invention discloses a digital proof color correcting method, comprising the following steps: determining a first color data value corresponding to the currently acquired first objective visual colorimetric value according to the mapping relationship of a first objective visual colorimetric value and a first color data value which are stored; acquiring a second objective visual colorimetric value corresponding to a color target figure according to the color target figure generated corresponding to the first color data value; judging whether the error between the second objective visual colorimetric value and the target objective visual colorimetric value exceeds a preset error range, wherein the target objective visual colorimetric value is as follows: source equipment determines out the first objective visual colorimetric value corresponding to the received second color data value according to the stored second color data value and the first objective visual colorimetric value; and continuously correcting or finishing the color correction according to a judgment result. The invention also discloses a digital proof color correcting device. According to the invention, the color matching accuracy can be improved, and the smoothness of drawing can be ensured.

Description

technical field [0001] The invention relates to the field of digital printing, in particular to a digital proofing color correction method and a digital proofing device. Background technique [0002] With the development of technologies such as digital proofing and digital printing, color management occupies an increasingly important position in printing production. In the entire printing process, color management plays a central role. Combining color management with printing technology can greatly Improve printing quality. [0003] In the printing industry, digital proofing is an important means of quality monitoring in the printing process, and it is extremely important to reduce printing risks and costs. Digital proofing is based on the digital printing system. During the printing process, the printer directly outputs the sample draft according to the processed page graphic and digital information. Digital proofing replaces the tedious proofing process of traditional pr...

AI Technical Summary

Problems solved by technology

[0007] In the above characterization process, the accuracy of color matching directly affects the quality of output, and the accuracy of color matching is the main index for evaluating color management. If the accuracy of matching is low, the printed color cannot be reproduced well. Can not play the role of proofing

[0008] In addition, since the multi-dimensional table method of ICC Profile itself is a process of using discrete sampling values ​​to reproduce continuous values, according to the sampling theorem, only when the sampling frequency reaches twice the highest frequency of the original data can the original data be completely completed. However, in practice In the application, the sampling data should not be too much, especially the number of color blocks in the color pommel horse diagram of the ICC Profile should not be too many, too much will lead to too long time for measuring the color block itself, which is contrary to the simple and fast color management. Principle, and the number of color blocks should not be too much, it is easier to have smoothness problems in the drawing

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