CN109918351B - Method and system for converting Beamer presentation into PowerPoint presentation - Google Patents
Method and system for converting Beamer presentation into PowerPoint presentation Download PDFInfo
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Abstract
The invention provides a method and a system for converting a Beamer presentation into a PowerPoint presentation, which comprises the following steps: acquiring data information of target elements in all Beamer presentations according to Beamer presentation initial information provided by a user, and respectively extracting content information and format information of characters, pictures, formulas and tables in a document by combining tags of the target elements in the Beamer presentations; analyzing the data content and the attributes in the document by combining a deep learning algorithm according to the recorded data information and a data storage mode, and distinguishing the contents with different attributes; and the characters, pictures, tables and formulas are converted; and storing the data of the elements in the Beamer manuscript into different variables according to different attributes, and sequentially writing the analyzed and converted original demonstration manuscript information into the generated blank PowerPoint demonstration manuscript according to the number, length and position information of the data elements in the source document.
Description
Technical Field
The invention relates to a document conversion and extraction technology, in particular to a method and a system for converting a Beamer presentation into a PowerPoint presentation.
Background
With the rise of cloud computing and mobile internet, office software is facing a deep revolution of the market and technology level. The presentation is one of office software, is generally made of characters, pictures and the like, can be added with audio and video files with dynamic display effects, and is widely applied to the fields of commerce, education, government agencies and the like.
Beamer is a LaTeX-based free presentation tool, and because of excellent mathematical formula control and document typesetting functions of TeX, Beamer presentation is used for general stronger discussion or conference reports, and is widely used in the fields of professional reports, scientific research and the like.
Microsoft Office PowerPoint is a presentation program developed by Microsoft corporation, which is one of the components in the Microsoft Office system. It is widely used by business, teachers, students and trainers. According to Microsoft developer data, approximately 3 hundred million presentations are made annually using Microsoft Office PowerPoint.
Compared to Microsoft Office PowerPoint presentation, the Beamer presentation is deficient in aesthetics and flexibility of production. The invention provides a method for quickly converting a Beamer presentation to a Microsoft Office PowerPoint presentation, which is applied to converting a professional presentation to a Microsoft Office PowerPoint presentation which is more convenient and beautiful to edit, solves the problem that the traditional document editing software is difficult to support the mutual conversion of multiple types of documents, and provides tool support for meeting the requirement of users on-line conversion of different document types. The application range of the professional demonstration manuscript is expanded, non-professionals can edit and utilize the Beamer demonstration manuscript content conveniently, and a convenient demonstration manuscript conversion system is provided for teachers and students of colleges and universities, scientific researchers and the like.
Disclosure of Invention
The invention aims to solve the technical problem that the conventional PowerPoint presentation and Beamer presentation cannot be flexibly converted, and provides a method and a system for converting the Beamer presentation into the PowerPoint presentation.
A method of conversion of a Beamer presentation to a PowerPoint presentation, comprising:
s1, extracting source file information: acquiring a Beamer presentation provided by a user, and respectively extracting data information corresponding to various labels according to the labels of all target elements in the Beamer presentation; the target elements include: content information and format information of characters, pictures, formulas and tables;
s2, analyzing source file data: analyzing the data content and the format in the document according to the data information recorded in the step S1 and the data storage mode by combining a deep learning algorithm, and distinguishing the content with different formats; converting characters, pictures, tables and formulas to generate target elements which accord with PowerPoint;
s3, generation of the target file: and storing the data of the elements in the Beamer manuscript into different variables according to different formats, and sequentially writing the analyzed and converted original demonstration manuscript information into the generated blank Microsoft Office PowerPoint demonstration manuscript according to the number, length and position information of the target elements in the source document.
Further, the extracting of the source file information specifically includes:
s11, constructing a buffer reader function in a java program according to original Beamer document element information provided by a user, and calling a getSlides method to read a data stream of target element information in the Beamer presentation document;
s12, preprocessing the presentation, wherein different labels in the Beamer document represent target elements with different attributes, and data information of characters, pictures, formulas and tables on each slide is obtained through an internal method in the constructed hslf module;
s13, extracting the character data to obtain document paragraph data, font size and format information;
s14, extracting table information of data with \ begin { minor } { |1| c | r | } and \ end { minor } labels in the data stream;
s15, extracting pictures of data with labels \ include graphics [ ] { } in the data stream;
s16, extracting the formula for the data with \ begin { displaypath } and \ end { displaypath }, \\ begin { allocation } and \ end { allocation } and $ label in the data stream.
Further, the source file data analysis specifically includes:
s21, recording the source presentation data into related variables defined in a program, and analyzing data content, type and format information by combining parameters;
s22, the information recorded in the step S21 and the way of storing the data in the Beamer are carried out by using a deep learning algorithm, multi-dimension and multi-attribute analysis is carried out on the source data, and the element conversion strategies which are most approximate or have the highest matching degree are respectively selected according to different elements to form character, picture and table element information streams with the best display effect;
s23, intelligently identifying and classifying target element information in the data analysis module through a plurality of deep learning algorithms including a stacked noise reduction automatic encoder and logistic regression, distinguishing roles and attributes of data stored in variables in a source Beamer presentation, and distinguishing different attribute contents;
s24, extracting the formula in the source presentation, zooming, denoising, binarizing and the like, and obtaining the formula of the formatted Microsoft Office PowerPoint presentation through an OCR and semantic conversion formula.
Further, the generating of the target file specifically includes:
s31, defining a new Microsoft Office PowerPoint presentation by using a JACOB component, and creating an AddNewSlide function to judge whether a new single slide needs to be generated;
s32, writing the information data of the bottom footer of the slide by constructing a HeaderFooters class;
s33, constructing a SlideMaster class to adjust the template type of the generated PPT presentation;
s34, constructing a RichTextRun class and writing the data information of each target element into each slide;
s35, analyzing the difference between the font format of the Beamer presentation and the characters in Microsoft Office PowerPoint and the coding format of the formula, and carrying out format matching by using the format matching rule in Java;
s36, adopting JACOB component to analyze the content attribute and relative position of the character, picture, table and formula in the source document target element information flow, and converting the content data between the two presentations to generate Microsoft Office PowerPoint presentation.
A system for conversion of a Beamer presentation to a PowerPoint presentation, comprising:
the source file information extraction module: the system comprises a Beamer demonstration manuscript and a database, wherein the Beamer demonstration manuscript is used for acquiring data information of target elements in all Beamer demonstration manuscripts according to Beamer demonstration manuscript initial information provided by a user, and extracting content information and format information of characters, pictures, formulas and tables in a document respectively by combining tags of the target elements in the Beamer manuscripts;
a source file data analysis module: the data storage module is used for analyzing the data content and the attributes in the document according to the data information recorded in the step S1 and the data storage mode and combining a deep learning algorithm to distinguish the contents with different attributes; and the characters, pictures, tables and formulas are converted;
a target file generation module: the system is used for storing the data of the elements in the Beamer manuscript into different variables according to different attributes, and sequentially writing the analyzed and converted original demonstration manuscript information into the generated blank Microsoft Office PowerPoint demonstration manuscript according to the number, length and position information of the data elements in the source document.
Compared with the prior art, the invention has the beneficial effects that: the method can realize the intelligent conversion of the Beamer presentation to the Microsoft Office PowerPoint presentation, is applied to the conversion of the professional presentation to the more beautiful and convenient Microsoft Office PowerPoint presentation, solves the problem that the traditional document editing software is difficult to support the mutual conversion of multiple types of documents, and provides tool support for meeting the requirement of users on-line conversion of different document types. The difficulty of conversion of the professional demonstration manuscript is reduced, the application range of the professional demonstration manuscript is expanded, non-professionals can edit and utilize the content of the Beamer demonstration manuscript conveniently, and a convenient demonstration manuscript conversion system is provided for teachers and students in colleges and universities, scientific research personnel and the like. The invention fills the gap of the field of intelligent conversion from the Beamer presentation to the Microsoft Office PowerPoint presentation at home and abroad.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flowchart of a method for converting a Beamer presentation to a PowerPoint presentation in accordance with the present invention;
FIG. 2 is a system block diagram for the conversion of a Beamer presentation to a PowerPoint presentation in accordance with the present invention;
FIG. 3 is a schematic diagram illustrating a flow chart of source file information extraction in the present invention;
FIG. 4 is a schematic flow chart of source file data analysis in the present invention;
FIG. 5 is a flow chart illustrating the generation of a target file according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
A method for converting a Beamer presentation to a PowerPoint presentation, as shown in fig. 1, comprising:
s1, extracting source file information: acquiring data information of target elements in all Beamer presentations according to Beamer presentation initial information provided by a user, and respectively extracting content information and format information of characters, pictures, formulas and tables in a document by combining tags of the target elements in the Beamer presentations;
s2, analyzing source file data: analyzing the data content and the attributes in the document according to the data information recorded in the step S1 and the data storage mode by combining a deep learning algorithm, and distinguishing the contents with different attributes; and the characters, pictures, tables and formulas are converted;
s3, generation of the target file: and storing the data of the elements in the Beamer manuscript into different variables according to different attributes, and sequentially writing the analyzed and converted original demonstration manuscript information into the generated blank Microsoft Office PowerPoint demonstration manuscript according to the number, length and position information of the data elements in the source document.
In this embodiment, the specific steps include:
s11: as shown in fig. 2, fig. 2 is a schematic diagram of system modules of the present invention, and includes three modules, namely, source file information extraction, source file data analysis, and target file generation. The invention designs a source file information extraction module by constructing a buffer reader function in Java; target element attribute analysis in the data analysis module is realized through a stacked noise reduction automatic encoder; dividing the position information of the data stream content by a K-means algorithm; designing formula conversion in a data analysis module by analyzing the difference between formula coding formats of the Beamer and the PPT; and introducing JACOB to realize an object file generation module. Further realizing the conversion of the Beamer presentation to the Microsoft Office PowerPoint presentation. Each implementation is described in detail below.
S12: as shown in fig. 3, fig. 3 is a relationship diagram of a source file information extraction module of the present invention. The invention adopts different extraction modes according to different source Beamer presentation data objects, and processes the extracted data again so as to better analyze the data format of the target file. The process is as follows:
s13: the program runs, and an upload button is clicked to call a system file selection dialog box FileDialog for a user to select a Beamer presentation to be converted; and after uploading, reading a target element data stream in the source presentation through the constructed buffer reader function to obtain all element information in the Beamer presentation. And extracting information such as paragraph contents, paragraph formats, relative positions among paragraphs and the like in the specified document class through a source document data tag \ documentclass [ option ] { document class }.
S14: extracting data with other complex formats, namely extracting table information of data with \ begin { tabular } { |1| c | r | } and \ end { tabular } labels in the data stream; extracting pictures of data with labels \ include graphics [ ] { } in the data stream; formula extraction is carried out on data with \ begin { displaypath } and \ end { displaypath }, \\ begin { allocation } and \ end { allocation } and $ labels in the data stream. And storing the extracted data for further analysis.
S21: as shown in FIG. 4, FIG. 4 is a source file data analysis module relationship diagram of the present invention. The invention considers the relative position and the mutual correlation information of the internal elements of the Microsoft Office PowerPoint presentation while ensuring the basic conversion effect, so that the Microsoft Office PowerPoint presentation is more consistent with the actual document situation. The invention uses a stack-type denoising automatic encoder to extract the characteristics of the target element information of the source document, combines a logistic regression algorithm to form a new classifier, and distinguishes the target elements with different attributes. The invention can automatically cluster the texts with the same format and automatically distinguish the contents of the texts with different formats, thereby greatly improving the accuracy of system judgment and improving the applicability and the application range of the system. The process is as follows:
s22: reading the label and the content of each data by combining the recorded target element data stream information of the source file, training a stacked denoising automatic encoder to extract the characteristics of the source data stream, and classifying elements with different attributes by adopting a logistic regression algorithm to obtain each text, table, picture and position information thereof in the Beamer manuscript.
S23: taking the word size, the line number, the horizontal layout position and the like of each section as an input matrix of a K-means clustering algorithm; different numbers of characters indicate different classification numbers, and the classification number of the character number is used as the basis of classification, namely, the classification number is divided into the classes. And (3) running a K-means algorithm to analyze the contained information, classifying similar text contents in the source Beamer presentation into the same category by defining an Euclidean distance function and an average centroid distance function, and distinguishing different font sizes to show a primary title, a secondary title, a text, a formula and the like.
S24: and (4) a formula conversion processing part. For different formula types, if the formula is in a picture format, firstly, scaling, denoising, binaryzation and the like are carried out on the formula picture by comparing information such as the sizes of the positions of the front and rear presentation files, and then the formula is converted by means of OCR and semantic conversion to obtain the formula in the formatted Microsoft Office PowerPoint presentation file.
S31: as shown in FIG. 5, FIG. 5 is a schematic diagram of the relationship between the generation modules of the object file according to the present invention. A JACOB component is used for defining a new Microsoft Office PowerPoint presentation, and a data analysis module combines the obtained text, the table and the corresponding position information after conversion to load the text, the table and the corresponding position information into a blank Microsoft Office PowerPoint presentation.
S32: JACOB writes information into Microsoft Office PowerPoint presentation in turn. And for the pictures and the formulas in the source Beamer presentation, directly copying and pasting the Beamer presentation after rule matching is carried out on the Beamer presentation through a JACOB component, and finally generating the Microsoft Office PowerPoint presentation.
The invention has the following theoretical significance and practical application value: the method can realize the intelligent conversion of the Beamer presentation to the Microsoft Office PowerPoint presentation, is applied to the conversion of the professional presentation to the more beautiful and convenient Microsoft Office PowerPoint presentation, solves the problem that the traditional document editing software is difficult to support the mutual conversion of multiple types of documents, and provides tool support for meeting the requirement of users on-line conversion of different document types. The difficulty of conversion of the professional demonstration manuscript is reduced, the application range of the professional demonstration manuscript is expanded, non-professionals can edit and utilize the content of the Beamer demonstration manuscript conveniently, and a convenient demonstration manuscript conversion system is provided for teachers and students in colleges and universities, scientific research personnel and the like.
The invention fills the gap of the field of intelligent conversion from the Beamer presentation to the Microsoft Office PowerPoint presentation at home and abroad.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A method for converting a Beamer presentation to a PowerPoint presentation, comprising:
s1, extracting source file information: acquiring a Beamer presentation provided by a user, and respectively extracting data information corresponding to various labels according to the labels of all target elements in the Beamer presentation; the target elements include: content information and format information of characters, pictures, formulas and tables;
s2, analyzing source file data: analyzing the data content and the format in the document according to the data information recorded in the step S1 and the data storage mode by combining a deep learning algorithm, and distinguishing the content with different formats; converting characters, pictures, tables and formulas to generate target elements which accord with PowerPoint;
s3, generation of the target file: storing the data of the elements in the Beamer manuscript into different variables according to different formats, and sequentially writing the analyzed and converted original presentation information into a generated blank Microsoft Office PowerPoint presentation according to the number, length and position information of the target elements in the source document;
s2 the deep learning algorithm is a stacked denoising auto-encoder.
2. The method of converting a Beamer presentation to a PowerPoint presentation as claimed in claim 1 wherein the source file information extraction specifically comprises:
s11, constructing a buffer reader function in a java program according to original Beamer document element information provided by a user, and calling a getSlides method to read a data stream of target element information in the Beamer presentation document;
s12, preprocessing the presentation, wherein different labels in the Beamer document represent target elements with different attributes, and data information of characters, pictures, formulas and tables on each slide is obtained through an internal method in the constructed hslf module;
s13, extracting the character data to obtain document paragraph data, font size and format information;
s14, extracting table information of data with \ begin { minor } { |1| c | r | } and \ end { minor } labels in the data stream;
s15, extracting pictures of data with labels \ include graphics [ ] { } in the data stream;
s16, extracting the formula for the data with \ begin { displaypath } and \ end { displaypath }, \\ begin { allocation } and \ end { allocation } and $ label in the data stream.
3. The method of converting a Beamer presentation to a PowerPoint presentation as recited in claim 1, wherein the source file data analysis specifically comprises:
s21, recording the source presentation data into related variables defined in a program, and analyzing data content, type and format information by combining parameters;
s22, the information recorded in the step S21 and the way of storing the data in the Beamer are carried out by using a deep learning algorithm, multi-dimension and multi-attribute analysis is carried out on the source data, elements with different attributes are classified, and the element conversion strategy with the most approximate or highest matching degree is respectively selected according to the difference of the elements to form character, picture and table element information streams with the best display effect;
s23, based on the characters obtained in the step S22, the character size, the line number and the horizontal layout position of each section are used as an input matrix of a K-means clustering algorithm, the category number of the character size is used as a classification basis, similar text contents in the source Beamer presentation are classified into the same category by defining an Euclidean distance function and an average centroid distance function, and different character sizes are distinguished to represent the characters comprising primary titles, secondary titles, texts and formulas;
s24, extracting the formula in the source presentation, zooming, denoising and binaryzation processing, and obtaining the formula of the formatted Microsoft Office PowerPoint presentation through an OCR and semantic conversion formula.
4. The method of converting a Beamer presentation to a PowerPoint presentation as claimed in claim 1 wherein the generating of the target file specifically comprises:
s31, defining a new Microsoft Office PowerPoint presentation by using a JACOB component, and creating an AddNewSlide function to judge whether a new single slide needs to be generated;
s32, writing the information data of the bottom footer of the slide by constructing a HeaderFooters class;
s33, constructing a SlideMaster class to adjust the template type of the generated PPT presentation;
s34, constructing a RichTextRun class and writing the data information of each target element into each slide;
s35, analyzing the difference between the font format of the Beamer presentation and the characters in Microsoft Office PowerPoint and the coding format of the formula, and carrying out format matching by using the format matching rule in Java;
s36, adopting JACOB component to analyze the content attribute and relative position of the character, picture, table and formula in the source document target element information flow, and converting the content data between the two presentations to generate Microsoft Office PowerPoint presentation.
5. A system for conversion of a Beamer presentation to a PowerPoint presentation, comprising:
the source file information extraction module: the system comprises a Beamer demonstration manuscript and a database, wherein the Beamer demonstration manuscript is used for acquiring data information of target elements in all Beamer demonstration manuscripts according to Beamer demonstration manuscript initial information provided by a user, and extracting content information and format information of characters, pictures, formulas and tables in a document respectively by combining tags of the target elements in the Beamer manuscripts;
a source file data analysis module: the data storage module is used for analyzing the data content and the attributes in the document according to the data information recorded in the step S1 and the data storage mode and combining a deep learning algorithm to distinguish the contents with different attributes; and the characters, pictures, tables and formulas are converted;
the deep learning algorithm is a stacked denoising automatic encoder;
a target file generation module: the system is used for storing the data of the elements in the Beamer manuscript into different variables according to different attributes, and sequentially writing the analyzed and converted original demonstration manuscript information into the generated blank Microsoft Office PowerPoint demonstration manuscript according to the number, length and position information of the data elements in the source document.
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| CN111046841A (en) * | 2019-12-26 | 2020-04-21 | 中孚安全技术有限公司 | Character extraction method, system, terminal and storage medium of PowerPoint file |
| CN112560406B (en) * | 2020-12-17 | 2021-09-07 | 中科三清科技有限公司 | Method and device for generating forecast consultation demonstration manuscript |
| CN113065311A (en) * | 2021-02-26 | 2021-07-02 | 成都环宇知了科技有限公司 | Scoring method and system for processing Power Point manuscript content based on OpenXml |
| CN115994527B (en) * | 2023-03-23 | 2023-06-09 | 广东聚智诚科技有限公司 | Machine learning-based PPT automatic generation system |
| CN117216586A (en) * | 2023-09-12 | 2023-12-12 | 北京饼干科技有限公司 | Method, device, medium and equipment for generating presentation template |
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Application publication date: 20190621 Assignee: WUHAN TIMES GEOSMART TECHNOLOGY Co.,Ltd. Assignor: CHINA University OF GEOSCIENCES (WUHAN CITY) Contract record no.: X2022420000021 Denomination of invention: A method and system for converting beamer presentation to PowerPoint Presentation Granted publication date: 20210423 License type: Common License Record date: 20220302 |