CN115935903A - Multimode PDF layout structure analysis system - Google Patents
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Abstract
The invention discloses a multi-mode PDF layout structure analysis system, which relates to the technical field of multi-mode PDF, and solves the problem that the analysis processing of a multi-element typesetting form in a layout is not carried out, and the multi-element covers texts, pictures, forms, shapes and the like.
Description
Technical Field
The invention belongs to the technical field of multi-mode PDF, and particularly relates to a multi-mode PDF layout structure analysis system.
Background
The layout structure refers to the expression of the relation between the whole and local parts and between the local parts of the newspaper layout, and one of the tasks of news editing work is to organize and arrange the relation between the whole and local parts of the layout and between the local parts of the layout and the local parts of the newspaper layout, so that the layout really becomes a unified whole.
The invention with patent number CN111241805A provides a method for rearranging a PDF document, which comprises importing page information of each page of the PDF document, extracting texts between BT and ET and layout information thereof, performing longitudinal compression on the vector texts, keeping the horizontal direction unchanged, replacing corresponding texts and layout information thereof, generating rearranged pages, combining all the pages into a new rearranged PDF document, wherein the line spacing of the texts of the rearranged PDF document is increased enough to put down a row of annotated characters, the original edition surface is basically unchanged, and reading is not affected.
When the multi-mode PDF layout structure is analyzed, the parameters of the whole layout are generally obtained and readjusted to change the whole layout structure of the multi-mode PDF, but in the specific processing process, because the multi-element layout form in the layout is not analyzed, the layout picture is changed, and meanwhile, the layout picture and the corresponding area are analyzed, whether the analysis size is proper or not can be determined, the size of the whole layout is not proper, and better viewing experience cannot be achieved.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art; therefore, the invention provides a multi-mode PDF layout structure analysis system, which is used for solving the technical problems that the size of the whole layout is not proper and better viewing experience cannot be achieved because the layout is not suitable when the layout picture is changed and the layout picture and a corresponding area are analyzed to analyze whether the size is proper or not while the inner layout picture is not analyzed and processed independently.
In order to achieve the above object, an embodiment according to a first aspect of the present invention provides a multi-modal PDF layout structure analysis system, including a layout parameter acquisition end, an analysis processing center, and a display terminal;
the analysis processing center comprises a layout parameter pre-analysis unit, a threshold unit, an adjustment unit, a layout parameter typesetting unit and a storage unit;
the layout parameter acquisition terminal is used for acquiring the overall layout image parameters of the multi-mode PDF file and transmitting the acquired overall layout image parameters to the analysis processing center;
a layout parameter preanalysis unit in the analysis processing center performs preanalysis processing on the acquired layout whole image parameters, extracts different typesetting pictures from the layout whole image parameters, acquires the area parameters of the typesetting pictures, acquires the proportion parameters of the typesetting pictures belonging to the same layout according to the area parameters, compares the proportion parameters with the built-in threshold value of the threshold value unit, and generates corresponding adjustment signals according to the comparison result;
the adjusting unit is used for changing the parameters of the processed comparison reference value BD according to the received adjusting signal and changing the typesetting size of the typesetting picture according to the changed parameters;
the layout parameter typesetting unit extracts corresponding typesetting templates from the storage unit according to the number of the typesetting pictures, then arranges different typesetting pictures in the typesetting templates, and then transmits the whole PDF layout after typesetting to the display terminal for displaying.
Preferably, the specific way of performing the pre-analysis processing on the acquired image parameters of the whole layout by the layout parameter pre-analysis unit is as follows:
extracting corresponding typesetting pictures from the whole layout image parameters in sequence at the position where the obtained whole layout image parameters are extracted;
marking the typesetting areas of different typesetting pictures as PB i Wherein i represents different typesetting pictures, wherein i =1, 2, \8230;, n;
a plurality of the printing areas PB belong to different typesetting areas i Comparing the typesetting pictures to obtain a comparison reference value BD = PB 1 ：PB 2 ：……：PB n Extracting a maximum ratio and a minimum ratio from the comparison reference value BD, and dividing the maximum ratio by the minimum ratio to obtain a value CL to be processed;
and comparing the value CL to be processed with a threshold value Y1 arranged in the threshold value unit, wherein the specific value of the arranged threshold value Y1 is drawn up by an operator according to experience, when the CL is less than Y1, no processing signal is generated, and when the CL is more than or equal to Y1, an adjusting signal is generated and transmitted to the adjusting unit.
Preferably, the specific way of the adjusting unit performing parameter change on the processed comparison reference value BD is as follows:
obtaining a corresponding change ratio by adopting an internal threshold value Y1 and the determined minimum ratio, transmitting the obtained change ratio into a comparison reference value BD, and changing the maximum ratio in the reference value BD by comparison to change the maximum ratio into the corresponding change ratio;
and zooming different typesetting pictures according to the changed comparison reference value BD to change the typesetting areas of a plurality of groups of different typesetting pictures, and transmitting the typesetting pictures after the change to the layout parameter typesetting unit.
Preferably, the specific manner of performing the specific typesetting by the layout parameter typesetting unit according to the number of the typesetting pictures is as follows:
acquiring the number of the typesetting pictures, marking the number as GS, transmitting the number GS to a storage unit, and extracting a corresponding typesetting template from the storage unit according to the number GS;
the typesetting template is internally provided with areas for typesetting the typesetting pictures with different sizes, and the typesetting pictures with different sizes are filled in the corresponding typesetting areas in a big-to-small mode according to the comparison reference value BD of the typesetting pictures;
marking the area parameter of the typesetting picture corresponding to the typesetting area as TP k Marking the area parameter of the typesetting area as PB k Where k represents different layout areas, using
Obtaining a cross parameter SY k ；
The obtained cross parameter SY k Comparing with a preset built-in threshold Y2, wherein the specific value of the built-in threshold Y2 is drawn up by an operator according to experience, and when SY k < Y2, no signal is generated, when SY k Producing a fine tuning signal when Y2 is greater than or equal to;
and converting the generated fine tuning signal into a fine tuning mark, setting the fine tuning mark in a corresponding typesetting area, and transmitting the whole PDF layout processed by the fine tuning mark into a display terminal.
Preferably, the display terminal receives the marked whole PDF layout, and an external operator checks whether a corresponding fine tuning mark exists in the whole PDF layout, and if the corresponding fine tuning mark exists, the external operator adjusts the typesetting picture in the region, and if the corresponding fine tuning mark does not exist, the external operator does not perform processing.
Compared with the prior art, the invention has the beneficial effects that: acquiring integral layout image parameters of a multi-mode PDF file in advance, transmitting the acquired integral layout image parameters to an analysis processing center, performing pre-analysis processing on the acquired integral layout image parameters, extracting different typesetting pictures from the integral layout image parameters, acquiring area parameters of the typesetting pictures, acquiring the proportion parameters of the typesetting pictures belonging to the same layout according to the area parameters, comparing the proportion parameters with a threshold value arranged in a threshold value unit, analyzing whether the typesetting pictures need to be zoomed according to the comparison result, performing parameter change on a comparison reference value BD after processing according to a received adjusting signal, changing the size of the typesetting pictures according to the changed parameters, extracting corresponding typesetting templates from a storage unit according to the number of the typesetting pictures, arranging different pictures in the typesetting templates, and transmitting the typesetting-finished integral PDF to a display terminal for display;
firstly, analyzing picture elements, obtaining typesetting information of the picture elements, adjusting the typesetting size of the picture elements, adjusting a comparative example, confirming position information of pictures in a PDF layout, leading the analyzed result information to be infinitely close to corresponding resolved PDFs, improving the relevance among the multi-mode PDF picture elements, leading the result of multi-mode PDF layout structure analysis to be more beneficial to improving the viewing and reading experience, analyzing the typesetting pictures in a multi-mode PDF file, adjusting the proportion, matching the typesetting pictures with corresponding templates after adjustment is finished, thereby obtaining the whole PDF layout.
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Fig. 1 is a schematic diagram of the principle of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present application provides a multi-modal PDF layout structure analysis system, which relates to the multi-modal PDF technology field, and does not analyze and process a multi-element typesetting form in a layout, and the multi-element covers a text, a picture, a form, a shape, etc., and the present invention, taking an element of a picture in a PDF multi-modal as a starting point, firstly, analyzes and processes the picture element, obtains typesetting information of the picture element, adjusts the size of the typesetting of the picture element, adjusts a comparative example, and confirms position information of the picture in the PDF layout, so that the analyzed result information is infinitely close to a corresponding parsed PDF, and the relevance between the multi-modal PDF picture elements is improved, and the result of the multi-modal PDF layout structure analysis is more favorable for improving viewing and reading experience;
the analysis system comprises a layout parameter acquisition end, an analysis processing center and a display terminal;
the output end of the layout parameter acquisition end is electrically connected with the input end of the analysis processing center, and the output end of the analysis processing center is electrically connected with the input end of the display terminal;
the analysis processing center comprises a layout parameter pre-analysis unit, a threshold unit, an adjustment unit, a layout parameter typesetting unit and a storage unit;
the layout parameter pre-analysis unit is in bidirectional connection with the threshold unit, the output end of the layout parameter pre-analysis unit is electrically connected with the input end of the adjustment unit, the adjustment unit is electrically connected with the input end of the layout parameter typesetting unit, and the layout parameter typesetting unit is in bidirectional connection with the storage unit;
the layout parameter acquisition terminal is used for acquiring the overall layout image parameters of the multi-mode PDF file and transmitting the acquired overall layout image parameters to the analysis processing center;
the layout parameter pre-analysis unit in the analysis processing center performs pre-analysis processing on the acquired layout whole image parameters, extracts different typesetting pictures from the layout whole image parameters, acquires the area parameters of the typesetting pictures, acquires the proportion parameters of the typesetting pictures belonging to the same layout according to the area parameters, compares the proportion parameters with the threshold value arranged in the threshold value unit, analyzes whether the typesetting pictures need to be zoomed according to the comparison result, wherein the mode of performing the specific pre-analysis processing is as follows:
after the obtained layout whole image parameters are extracted, sequentially extracting corresponding typesetting pictures from the layout whole image parameters;
marking the typesetting areas of different typesetting pictures as PB i Wherein i represents different typesetting pictures, wherein i =1, 2, \8230;, n;
a plurality of the printing areas PB belong to different typesetting areas i Comparing the typesetting pictures to obtain a comparison reference value BD = PB 1 ：PB 2 ：……：PB n Extracting a maximum ratio and a minimum ratio from the comparison reference value BD, and dividing the maximum ratio by the minimum ratio to obtain a value CL to be processed;
comparing the value CL to be processed with a threshold value Y1 arranged in the threshold value unit, wherein the specific value of the threshold value Y1 is drawn up by an operator according to experience, when CL is less than Y1, no processing signal is generated, and when CL is more than or equal to Y1, an adjusting signal is generated and transmitted to the adjusting unit.
The adjusting unit changes parameters of the processed comparison reference value BD according to the received adjusting signal, and changes the typesetting size of the typesetting picture according to the changed parameters, wherein the specific mode of changing specifically is as follows:
obtaining a corresponding change ratio by adopting an internal threshold value Y1 and the determined minimum ratio, transmitting the obtained change ratio into a comparison reference value BD, and changing the maximum ratio in the reference value BD by comparison to change the maximum ratio into the corresponding change ratio;
and zooming different typesetting pictures according to the changed comparison reference value BD to change the typesetting areas of a plurality of groups of different typesetting pictures, and transmitting the typesetting pictures after the change to the layout parameter typesetting unit.
The layout parameter typesetting unit extracts corresponding typesetting templates from the storage unit according to the number of the typesetting pictures, then sets different typesetting pictures in the typesetting templates, and then transmits the whole PDF layout after typesetting to the display terminal for displaying, wherein the specific arrangement mode is as follows:
acquiring the number of the typesetting pictures, marking the number as GS, transmitting the number GS to a storage unit, and extracting corresponding typesetting templates from the storage unit according to the number GS (the corresponding typesetting templates are externally provided with corresponding number marks, the number marks can be identified according to the number GS, and the corresponding typesetting templates are directly extracted according to the identification result);
the typesetting template is internally provided with areas for typesetting the typesetting pictures with different sizes, and the typesetting pictures with different sizes are filled in the corresponding typesetting areas in a big-to-small mode according to the comparison reference value BD of the typesetting pictures;
marking the area parameter of the typesetting picture corresponding to the typesetting area as TP k Marking the area parameter of the typesetting area as PB k Where k represents different layout areas, using
Obtaining a cross parameter SY k ；
The obtained cross parameter SY k Comparing with a preset built-in threshold value Y2The specific value of the middle built-in threshold Y2 is drawn up by the operator according to the experience when SY k When the ratio is less than Y2, does not generate any signal when SY k Producing a fine tuning signal when Y2 is greater than or equal to;
and converting the generated fine tuning signal into a fine tuning mark, setting the fine tuning mark in a corresponding typesetting area, and transmitting the whole PDF layout processed by the fine tuning mark into a display terminal.
The display terminal receives the marked integral PDF layout, an external person checks whether a corresponding fine adjustment mark exists in the integral PDF layout, if the corresponding fine adjustment mark exists, the external operator adjusts the typesetting picture in the area, and if the corresponding fine adjustment mark does not exist, the external operator does not process the typesetting picture.
Part of data in the formula is obtained by removing dimension and taking the value to calculate, and the formula is obtained by simulating a large amount of collected data through software and is closest to a real situation; the preset parameters and the preset threshold values in the formula are set by those skilled in the art according to actual conditions or obtained through simulation of a large amount of data.
The working principle of the invention is as follows: the method comprises the steps of obtaining overall layout image parameters of a multi-mode PDF file in advance, transmitting the obtained overall layout image parameters to an analysis processing center, obtaining area parameters of a layout picture, obtaining proportion parameters of the layout picture belonging to the same layout according to the area parameters, comparing the proportion parameters with a threshold value arranged in a threshold value unit, analyzing whether the layout picture needs to be zoomed according to a comparison result, changing parameters of a comparison reference value BD after finishing processing according to a received adjustment signal, changing the size of the layout picture according to the changed parameters, extracting a corresponding layout template from a storage unit according to the number of the layout pictures, arranging different layout pictures in the layout template, and transmitting the overall layout PDF after finishing layout to a display terminal for display;
firstly, analyzing and processing picture elements, acquiring typesetting information of the picture elements, adjusting the typesetting size of the picture elements, adjusting a comparative example, confirming position information of a picture in a PDF layout, enabling analyzed result information to be infinitely close to correspondingly analyzed PDFs, improving the relevance among multi-mode PDF picture elements, and enabling the result of multi-mode PDF layout structure analysis to be more beneficial to improving viewing and reading experience;
the method comprises the steps of analyzing the typesetting pictures in the multi-mode PDF file in advance, adjusting the proportion, matching the typesetting pictures with corresponding templates after the adjustment is finished, and accordingly obtaining the whole PDF layout.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (5)
1. A multi-mode PDF layout structure analysis system is characterized by comprising a layout parameter acquisition end, an analysis processing center and a display terminal;
the analysis processing center comprises a layout parameter pre-analysis unit, a threshold unit, an adjustment unit, a layout parameter typesetting unit and a storage unit;
the layout parameter acquisition terminal is used for acquiring the overall layout image parameters of the multi-mode PDF file and transmitting the acquired overall layout image parameters to the analysis processing center;
a layout parameter pre-analysis unit in the analysis processing center performs pre-analysis processing on the acquired layout whole image parameters, extracts different typesetting pictures from the layout whole image parameters, acquires the area parameters of the typesetting pictures, acquires the proportion parameters of the typesetting pictures belonging to the same layout according to the area parameters, compares the proportion parameters with the threshold values arranged in the threshold value unit, and generates corresponding adjustment signals according to the comparison result;
the adjusting unit is used for changing the parameters of the processed comparison reference value BD according to the received adjusting signal and changing the typesetting size of the typesetting picture according to the changed parameters;
the layout parameter typesetting unit extracts the corresponding typesetting template from the storage unit according to the number of the typesetting pictures, then arranges different typesetting pictures in the typesetting template, and then transmits the whole PDF layout after typesetting to the display terminal for displaying.
2. The system according to claim 1, wherein the layout parameter pre-analysis unit pre-analyzes the acquired image parameters of the entire layout in a specific manner:
after the obtained layout whole image parameters are extracted, sequentially extracting corresponding typesetting pictures from the layout whole image parameters;
marking the typesetting areas of different typesetting pictures as PB i Wherein i represents different typesetting pictures, wherein i =1, 2, \8230;, n;
a plurality of the printing areas PB belong to different typesetting areas i Comparing the typesetting pictures to obtain a comparison reference value BD = PB 1 ：PB 2 ：……：PB n Extracting a maximum ratio and a minimum ratio from the comparison reference value BD, and dividing the maximum ratio by the minimum ratio to obtain a value CL to be processed;
and comparing the value CL to be processed with a threshold value Y1 arranged in the threshold value unit, wherein the specific value of the arranged threshold value Y1 is drawn up by an operator according to experience, when the CL is less than Y1, no processing signal is generated, and when the CL is more than or equal to Y1, an adjusting signal is generated and transmitted to the adjusting unit.
3. The system of claim 2, wherein the adjustment unit performs parameter modification on the processed comparison reference value BD by:
obtaining a corresponding change ratio by adopting an internal threshold value Y1 and the determined minimum ratio, transmitting the obtained change ratio into a comparison reference value BD, and changing the maximum ratio in the reference value BD by comparison to change the maximum ratio into the corresponding change ratio;
and zooming different typesetting pictures according to the changed comparison reference value BD to change the typesetting areas of a plurality of groups of different typesetting pictures, and transmitting the typesetting pictures after the change to the layout parameter typesetting unit.
4. The system according to claim 3, wherein the layout parameter typesetting unit performs the specific typesetting according to the number of the typesetting pictures by the following specific way:
acquiring the number of the typesetting pictures, marking the number as GS, transmitting the number GS to a storage unit, and extracting a corresponding typesetting template from the storage unit according to the number GS;
the typesetting template is internally provided with areas for typesetting the typesetting pictures with different sizes, and the typesetting pictures with different sizes are filled in the corresponding typesetting areas in a big-to-small mode according to the comparison reference value BD of the typesetting pictures;
marking the area parameter of the typesetting picture corresponding to the typesetting area as TP k Marking the area parameter of the typesetting area as PB k Where k represents different layout areas, using
Obtaining a cross parameter SY k ；
The obtained cross parameter SY k Comparing with a preset built-in threshold Y2, wherein the specific value of the built-in threshold Y2 is drawn up by an operator according to experience, and when SY k < Y2, no signal is generated, when SY k At more than or equal to Y2, production is slightAdjusting a signal;
and converting the generated fine tuning signal into a fine tuning mark, setting the fine tuning mark in a corresponding typesetting area, and transmitting the whole PDF layout processed by the fine tuning mark into a display terminal.
5. The system according to claim 4, wherein the display terminal receives the marked entire PDF layout, and the outsider checks whether the corresponding fine tuning mark exists in the entire PDF layout, and if the corresponding fine tuning mark exists, the external operator adjusts the typesetting picture in the region, and if the corresponding fine tuning mark does not exist, the display terminal does not perform the processing.
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| JP2012074852A (en) * | 2010-09-28 | 2012-04-12 | Sharp Corp | Image processing device, image formation device, image reading device, image processing method, image processing program and recording medium |
| CN102521219A (en) * | 2011-12-19 | 2012-06-27 | 方正国际软件有限公司 | Format and streaming mixed typesetting system and typesetting method for same |
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