Page splitting and splicing method based on PDF (Portable Document Format) page
A page and collage technology, applied in the field of image analysis and data processing, can solve the problems that color pages and black and white pages cannot be printed separately, color parts cannot be separated from black and white parts, time-consuming and labor-intensive, etc., to achieve strong robustness and stability , save time and reduce costs
Pending Publication Date: 2021-12-31
XIAN UNIV OF TECH
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Problems solved by technology
At present, in most digital printing processes, the color part cannot be automatically separated from the black and white part. All printing by color machines will make the cost high, while all printing in black and white cannot meet the actual needs, and manual screening and separation are time-consuming and laborious.
In order to solve the cost problem caused by the inability to print color pages and black-and-white pages separately, and realize the cost control while ensuring the product look and feel remains unchanged, the present invention provides a method for splitting and combining pages based on PDF pages
Method used
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[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. All the above-mentioned functions may be combined in any form to form an optional embodiment of the present disclosure, which will not be repeated here.
[0056] The description and claims of this application and the above and following terms "step 1", "step 2", "step 3" and other similar descriptions are used to combine a relatively complete embodiment that can use all functional processes Circumstances are described and need not be used to describe a particular sequence. It should be understood that some operations in these descriptions may be performed independently, or the order may be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be performed in an order other than that described herein, for example.
[0057] The technical scheme adopted in the present invention is a method f...
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The invention discloses a splitting and page splicing method based on a PDF (Portable Document Format) page, which comprises the following steps of: firstly reading a PDF file, simultaneously converting page data into image data, and carrying out channel separation and pixel proportion detection on the obtained image data, namely calculating the proportion of color pixels on the whole image and a deviation value of the color pixels and a standard gray level image, and carrying out gray color judgment on the page; and separating and recombining the pages according to the grey color judgment result and the built-in printing mode and page splicing mode options. The PDF page is extracted and judged by using the image analysis and processing technology, and the color page and the black and white page in the PDF are split and spliced according to the output mode, so that the efficiency is improved, the quality is ensured, and the cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of image analysis and data processing, and relates to a method for splitting and combining pages based on PDF pages. Background technique [0002] With the application of the Internet and digital technology, the digital publishing industry has entered the fast lane, and it is favored in the field of graphic printing and short-run printing market. According to the 2020 "Digital Printing Installed Capacity Survey Report", in the application fields of high-end color digital printing machines and production digital printing machines, the field of graphic and text fast printing accounts for the largest proportion, with high quality requirements, strong production capacity and low cost. The demanding graphic and text printing production center is the absolute main force for introducing high-end color digital printing equipment. Among them, publishing and printing accounted for the second. With the widespread impl...
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Login to View More IPC IPC(8): G06F3/12G06T7/00G06T7/90
CPCG06F3/1203G06F3/1248G06F3/1242G06F3/125G06T7/0002G06T7/90G06T2207/30176Y02D10/00
Inventor 郑元林陈兵廖开阳刘春霞陈文倩王凯迪孙英健王可儿王晓莹谢雨林张新会钟崇军解博
Owner XIAN UNIV OF TECH