Color correction method

Abstract

The invention discloses a color correction method. According to the color correction method, a color value of a current pixel is changed into a target color value through simple and rapid adjustment when it is judged that the color value of the current pixel falls within the color range of a color needing to be corrected, then an output file can be in a specific color, and requirements of users are met. During printout of an electronic seal, requirements for colors of the users are met by adjusting the colors of output pixels one by one, and customized color adjustment can be achieved without the need of special equipment to obtain satisfying printing colors.

Description

technical field [0001] The invention relates to a color correction technology, in particular to a color correction method of an electronic seal. technical background [0002] There are many techniques and methods for color correction in the publishing industry. The main idea is based on the traditional color adjustment, which roughly includes: [0003] 1. Obtain the color description parameters of different output devices such as monitors, printers, etc., usually by using a spectrometer to obtain the CIELab data of the output color; [0004] 2. Then use software to write CIELab data into an ICC format comparison file. In addition to the color gamut data of the output device, the comparison file can also include the production characteristics of the device, such as black plate characteristics, dot gain, etc.; [0005] 3. With the comparison file of the output device, the color calculation software can refer to the inherent characteristic data of the two output devices, and ...

AI Technical Summary

Problems solved by technology

However, when the electronic document with the electronic seal is sent to the user who receives the electronic document, the color of the electronic seal is likely to be different from the pre-conceived effect due to the color cast of the printer.

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