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Printing ink dosage estimation method based on color characteristics

A technology of color characteristics and ink volume, which is applied to the general parts of printing machinery, calculation, image analysis, etc., can solve the problems of insufficient accuracy of ink consumption estimation, shorten the printing preparation time, improve and stabilize the quality of printed matter, and facilitate preparation The effect of work

Pending Publication Date: 2022-04-26
CHANGAN UNIV
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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a method for estimating ink consumption based on color characteristics, which solves the problem of insufficient accuracy of ink consumption estimation in the prior art

Method used

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  • Printing ink dosage estimation method based on color characteristics
  • Printing ink dosage estimation method based on color characteristics
  • Printing ink dosage estimation method based on color characteristics

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Embodiment 1

[0046] A method for estimating ink consumption based on color characteristics of the present invention, such as figure 1 As shown, it specifically includes the following steps:

[0047] S1: Obtain a color-separated grayscale image P in TIFF format for plate making according to the original image, divide the color-separated grayscale image P into blocks, and obtain several block images.

[0048] S1.1: Convert the RGB image of the original image to the CMYK color mode through the process of color separation and screening of the color image, where the gray value of each channel of CMYK corresponds to the intensity of the transferred ink during printing. Convert the image pixel values ​​within a certain range into dots corresponding to the area ratio by screening, so as to express color information in different proportions of ink and paper colors.

[0049] In the four channels of CMYK, the screens are screened at 15°, 45°, 90° and 75° respectively, and the screens are screened wi...

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Abstract

The invention provides an ink consumption estimation method based on color characteristics, which comprises the following steps of: acquiring a TIFF format color separation grayscale image P for platemaking according to an original manuscript image, and partitioning the color separation grayscale image P to obtain a plurality of block images; creating a dot transfer ink model, and calculating dot percentage of each block image conversion dot; calculating the volume of the ink transferred by the lattice points through a cone volume formula according to the lattice point percentage, the opening width and the opening angle by adopting the diamond lattice points; obtaining the volume of the transfer ink of the manuscript image according to the sum of the volumes of the transfer ink of the dots; a single-channel gravure ink transfer model is established, and the use amount of ink and auxiliaries is estimated according to the volume of original manuscript image transfer ink in combination with the density and printing quantity of mixed ink in an ink fountain of a printing machine; and respectively calculating to obtain the ink amount transferred by each block image by utilizing a dot transfer ink model. According to the invention, the problem of insufficient ink consumption estimation accuracy in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a method for estimating ink consumption based on color characteristics. Background technique [0002] Printed matter is one of the important forms of expression of color information in the color management system. Among the many factors that affect the color performance of printed matter, the amount of printing ink plays a key role. The relationship between color characteristics and printing ink can greatly shorten the printing preparation time, facilitate the preparation work of the printing material department, and help improve and stabilize the quality of printed matter, providing a solid foundation for high-fidelity color performance on paper and other substrates. data protection. However, the existing ink consumption estimation is usually based on the experience of practitioners, the traditional judgment method of visual inspection of original manuscripts and examination p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F33/00G06T7/11
CPCB41F33/0027G06T7/11
Inventor 姚锐陈亮惠萌
Owner CHANGAN UNIV
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