A Prediction Method of Flexographic Printing Pressure Based on Graphic Information
A technology of flexographic printing and forecasting method, which is applied in the direction of letterpress printing, printing, printing technology, etc., and can solve the problems of data source dependence and high price
Active Publication Date: 2021-09-10
XIAN UNIV OF TECH
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However, the data source of this prediction system depends on the special layout information measurement equipment, and in order to maintain excellent collection accuracy, the price of this layout information measurement equipment is relatively high
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[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] The invention provides a flexographic printing pressure prediction method based on graphic information, such as figure 1 The specific steps shown are as follows:
[0048] Step 1, performing a binarization operation on the color-separated original image to obtain a binarized image;
[0049] Step 2, performing an inversion operation on the binarized image in step 1 to obtain an inverse color binarized image;
[0050] Step 3, divide the inverse color binarized image obtained in step 2 into regular grids, calculate the image and text area in each grid area, and obtain an area matrix; specifically implement according to the following steps:
[0051] Step 3.1, divide the inverse color binarized image obtained in step 2 into a regular grid of 28*28, which is used for the calculation of the image and text area in the grid area. The number of...
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The invention discloses a flexographic printing pressure prediction method based on image and text information. Firstly, binarize the color-separated original image to obtain a binarized image; invert the binarized image to obtain a reversed color binarized image ; Grid the inverse color binary image, calculate the graphic area in each grid area, and obtain the area matrix; then perform gradient calculation on the color-separated original image, and obtain the gradient image; grid the gradient image, calculate The maximum gradient value in each grid is obtained to obtain the maximum gradient value matrix; the area matrix and the maximum gradient value matrix are horizontally juxtaposed to obtain the feature matrix of the color-separated original image, and finally the pressure prediction model is established; the present invention is based on graphic information. Printing pressure prediction method, by extracting two kinds of graphic information features, graphic area and maximum gradient value, and establishing a convolutional neural network prediction model with feature matrix as input data and actual printing pressure value as output data, realizing graphic information based Flexographic printing pressure prediction.
Description
technical field [0001] The invention belongs to the technical field of printing, and relates to a flexographic printing pressure prediction method based on graphic and text information. Background technique [0002] In recent years, with the continuous improvement of material technology, process technology and prepress technology, flexo printing has entered the ranks of high printing quality, coupled with its own more efficient, environmentally friendly, safe and hygienic characteristics, market recognition and acceptance It is also constantly improving, and flexo printing has also ushered in the era of the best development conditions under the national policy of green environmental protection. [0003] Flexo printing belongs to light pressure printing. Compared with other printing methods, the printing pressure of flexo printing is small, and slight changes in pressure will have a significant impact on the quality of printed products. Therefore, it is very important to choo...
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IPC IPC(8): B41M1/04G06T7/00G06T7/187G06T7/62
CPCB41M1/04B41P2200/12G06T7/0004G06T2207/20081G06T2207/20084G06T2207/30144G06T2207/30204G06T7/187G06T7/62
Inventor 廖开阳豆佳欣武吉梅章明珠
Owner XIAN UNIV OF TECH