Character recognition-based electronic historical map information marking method and electronic map recommendation method

Abstract

The invention relates to an electronic historical map information marking method and an electronic map recommendation method based on character recognition, and the method comprises the steps: collecting and arranging electronic historical maps in a plurality of historical periods, and setting a corresponding database; adding information marks on a data layer according to a time and / or dynasty sequence based on the geographic coordinates or the block partitions or geographic units as small as possible; setting tags for the information marks according to categories, and setting tags for the electronic historical maps according to categories, or respectively associating, corresponding or linking the plurality of electronic historical maps with the data layer according to the sequence of time and / or dynasty; and a user performs label retrieval, matching and display on the information marks in the database through active or passive operation. According to the method, the electronic historical map is used as a mark editing object, so that the method has more extensive convenience and practicability, and readers can more systematically master knowledge contents in three dimensions of geography, humanity and history.

Description

Technical Field

[0001] This invention relates to the field of artificial intelligence presentation of geographic terrain in a multimedia manner, such as the field of artificial intelligence electronic historical map marking, and particularly to a method for marking electronic historical map information and an electronic map recommendation method based on text recognition. Background Technology

[0002] Existing paper maps and electronic maps all have only a single map function; the former is severely limited by the size of the paper map, the setting of the scale, and the area to be printed; the latter can only display the map area or content related to the geographical name by having the reader input modern geographical terms.

[0003] On the other hand, when readers engage with historical texts or literary masterpieces, they often encounter difficulties because the names of locations used are ancient, or because they are unfamiliar with the Chinese characters or pronunciations of the specific places. While they may be eager to understand the exact geographical location of the events described, they struggle to readily access relevant maps. Consequently, they miss the optimal opportunity to delve deeper into the literary or historical context. Over time, readers may acquire knowledge of the chronological aspects of the literature and history, but fail to grasp the more systematic, spatial, and other essential information at the peak of their reading. They are forced to rely on fragmented supplementary learning and exploration later on.

[0004] Therefore, it is necessary to develop an electronic historical map information labeling method based on character recognition, so as to recommend electronic maps corresponding to the content being read to readers in real time, so that readers can more systematically grasp the knowledge content of the literary works they are reading in the three dimensions of geography, humanities and history at the best time of reading. Summary of the Invention

[0005] The purpose of this invention is to propose a method for marking electronic historical map information and a method for recommending electronic maps based on character recognition. This invention can greatly improve the efficiency of readers' reading and mastery of historical literary works, and help readers understand the horizontal and vertical connections between historical events and historical literary figures from a deeper geographical or topographical perspective.

[0006] To achieve the above objectives, the present invention provides a method for marking electronic historical map information based on character recognition, the method comprising the following steps:

[0007] Collect and organize electronic historical maps from multiple historical periods in history, geography, or archaeology, and set up a database corresponding to the geographical coordinates or blocks of the electronic historical maps or the smallest possible geographical units;

[0008] In the database, the database is configured to contain two or more data layers. On the data layers, information tags are added in the order of time and / or dynasty based on the geographic coordinates or blocks separated or the smallest possible geographic unit U. The information tags include at least time and / or dynasty information, and / or personal information, as well as feature fields containing historical geographic information.

[0009] The information markers are tagged according to categories, and the electronic historical maps are tagged according to categories, or the multiple electronic historical maps are associated, corresponded to, or linked with the data layer according to the order of time and / or dynasty.

[0010] Users can perform tag retrieval and matching of information tags in the database through active or passive operations. When a match is successful, at least some of the information tags are retrieved and displayed on the matched electronic historical map.

[0011] Preferably, the information tagging method further includes the following steps:

[0012] Collect and organize local electronic historical maps based on historical events and / or containing local geographic information, and set tags for the local electronic historical maps based on the categories of information tags; after successful retrieval and matching, directly retrieve and display the corresponding local electronic historical map.

[0013] Preferably, the blocks are divided into several regions or plots on the electronic historical map according to historical territory, administrative divisions, or latitude and longitude coordinates. The blocks are irregular shapes of administrative blocks, or regular shapes such as rectangles, squares, or fan shapes.

[0014] Furthermore, the present invention also provides an electronic map recommendation method based on text recognition, the recommendation method comprising the following steps:

[0015] Obtain an electronic historical map and mark the electronic historical map with information to form an electronic map with information marking. The information marking includes at least time and / or dynasty information, and / or personal information, and / or feature fields containing historical geographical information.

[0016] The text recognition module identifies the text, images, or videos read by the reader and extracts contextual elements, including time and / or dynasty information, and / or personal information, as well as feature fields containing historical and geographical information.

[0017] The information tags are matched with the contextual elements, and the whole or part of the electronic historical map that matches the content of the contextual elements is displayed or recommended to the reader. The corresponding electronic historical map is displayed to the reader while the reader is reading.

[0018] Preferably, after the information markers are successfully matched with the context elements and the reader is shown or recommended an electronic map, either in whole or in part, that matches the content of the context elements, the reader is also shown or recommended at least a portion of the information marker content that matches the content of the context elements.

[0019] Preferably, a display threshold range for geographic coordinate axes is set on the electronic historical map, and the entire or partial electronic historical map matching the content of the contextual element is displayed to the reader according to the display threshold range, centered on the geographic location that matches the content of the contextual element.

[0020] The present invention also provides an electronic map with historical information marking, wherein the electronic map is an electronic map formed using the information marking method.

[0021] Furthermore, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor is configured to execute the method described when running the computer program.

[0022] Furthermore, the present invention also provides a computer-readable medium having a computer program stored thereon, which, when executed, implements the method described thereon.

[0023] Furthermore, the present invention also provides a publication, which is a printed publication or an electronic publication equipped with a display device, wherein the method is used when reading the publication.

[0024] Based on the above technical solution, the advantages of the present invention are:

[0025] The information marking method for electronic historical maps of the present invention can provide a method for marking contemporary and historical information based on electronic historical maps, thereby enabling real-time recommendations of electronic historical maps corresponding to the content being read by readers, and even displaying historical and geographical information related to the content being read on the electronic historical map.

[0026] This invention uses electronic historical maps as markers for editing, offering greater convenience and practicality. It allows readers to systematically grasp the geographical, cultural, and historical aspects of the literary works they read at the optimal reading time. This enables the invention to more intuitively present the changes and evolution of historical geographical information, helping readers to deeply understand the literary works they read from multiple perspectives, including time and space.

[0027] The electronic maps, electronic devices, computer-readable media, and publications provided by this invention offer readers different reading media, enabling historical (temporal) and geographical (spatial) information to be presented to readers more conveniently, quickly, and in a three-dimensional way through multimedia reading formats. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the database structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the geographical unit U of the present invention;

[0031] Figure 3 A schematic diagram illustrating the block division of this invention;

[0032] Figure 4 This is a schematic diagram of an electronic historical map according to an embodiment of the present invention. Detailed Implementation

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figure 1 As shown, this invention provides a method for marking electronic historical map information based on character recognition, which includes the following steps:

[0035] Collect and organize electronic historical maps Mn from multiple historical periods in history, geography, or archaeology. Preferably, a layered overlay structure and / or projection structure can be set between the electronic historical maps Mn, such as... Figure 1 As shown, the x and y axes are the geographical coordinate axes of the map, and the T axis is the dynastic time axis. In the figure, M1 is the modern electronic historical map layer (for Chinese history, M1 can be the historical map layer for the period 1840-1949), M2 is the electronic historical map layer for the Qing Dynasty (1636-1912), M3 is the electronic historical map layer for the Ming Dynasty (1368-1644), and so on, up to the historical period Mn of disciplines such as history, geography, or archaeology.

[0036] Preferably, by obtaining two-dimensional (2D) and / or three-dimensional (3D) electronic historical maps, the present invention can display and recommend electronic historical maps that match the text being read to the reader. In particular, it can recommend three-dimensional electronic historical maps of the locations where specific historical events occurred, which can help readers understand the geographical environment of the locations where historical events occurred and the objective role of the geographical environment in the occurrence of historical events more intuitively and efficiently, thereby deepening the reader's impression and memory of reading historical literature and other texts.

[0037] It should be noted that while current electronic historical maps such as Baidu Maps and Google Maps have a certain degree of electronic editability, it is difficult for history and geography enthusiasts or historical map editing enthusiasts to obtain their original map files. Therefore, this invention uses electronic historical maps as the target for marking and editing, which has greater convenience and practicality in a wider range of applications.

[0038] Furthermore, the present invention establishes a database corresponding to the geographic coordinates or block separations or the smallest possible geographic units U of the electronic historical map Mn; preferably, the present invention can use database formats such as graphical databases or relational databases (e.g., SQL & Apache or MySQL) for data import and export. Of course, other database formats in the prior art can also be used. On the other hand, over time, the overlay structure and / or projection structure of the layered electronic historical map in the marked map database may undergo a dynamic adjustment and update process.

[0039] like Figure 1 As shown, in the database, the database is configured to contain two or more data layers. On the data layers, information tags are added according to time and / or dynasty order based on the geographic coordinates or blocks separated or the smallest possible geographic unit U. The information tags include at least time and / or dynasty information, and / or personal information, as well as feature fields containing historical geographic information. Furthermore, each electronic historical map M1 to Mn can be associated, corresponded to, or linked with the data layers D1 to Dn according to time and / or dynasty order.

[0040] exist Figure 1 , Figure 2 and Figure 3 In the middle, each layer of the electronic historical map's data is based on the smallest possible geographic unit U, such as Figure 2As shown, or based on geographic coordinates (e.g., latitude and longitude coordinates) or block divisions (e.g., as shown in 3, the territorial block division of a specific historical country or the administrative block division of provinces, states, counties, etc., or a specific resolution), at least information markers corresponding to the historical period of that layer of electronic historical map are added; for example, time and / or dynasty information are added. When the contextual elements extracted by the text recognition module match the time and / or dynasty information, the electronic historical map marked with the corresponding time and / or dynasty information can be extracted and recommended and displayed to the reader.

[0041] The block division described in this invention refers to dividing the electronic historical map Mn into several regions or blocks according to historical territories, administrative divisions, or latitude and longitude coordinates. The "block" can be an irregular shape of an administrative block, or it can be rectangular, square, or fan-shaped (e.g., several fan-shaped structures presented on the surface of a globe or map based on latitude and longitude, such as...). Figure 3 (As shown) regular shapes, or resolution units of a specific size, etc. Of course, Figure 3 The fan-shaped structure in the model can achieve a smaller fan-shaped block structure at a more refined latitude and longitude unit (e.g., 0.01°).

[0042] Furthermore, such as Figure 2 As shown, in this embodiment of the invention, the smallest possible geographical unit U can be a county, a lake, or a building (such as...). Figure 2 The Yellow Crane Tower (HHL) shown can be considered a geographical unit U, a river, a hill, etc. In other words, any geographical location marked by latitude and longitude or existing coordinate system can be considered the "smallest possible geographical unit U". More specifically, any geographical location mentioned in historical records, literary works, idioms, or oral traditions can also be defined as a geographical unit U.

[0043] In the database described in this invention, historical information tags corresponding to the geographical coordinates or blocks separated by, or the smallest possible geographical unit U, are added. These information tags include at least time and / or dynasty information, and / or biographical information, as well as feature fields containing historical geographical information. Specifically, the "feature fields containing historical geographical information" mentioned in this invention refer to feature fields in literary or historical works that contain historical events, allusions, stories, idioms, colloquialisms, etc., and / or feature fields related to geography, topography, landforms, etc., in texts describing historical events. See Table 1 below.

[0044] The present invention sets tags for the information markers according to categories, and sets tags for the electronic historical map Mn according to categories, or associates, corresponds to or links the multiple electronic historical maps with the data layer according to the order of time and / or dynasty.

[0045] Preferably, during implementation, a certain number of data labelers can be assigned who can accurately understand the text content and semantics of various historical books, classic literary works, library classics, and other databases, and add the correct tags according to categories; data experts regularly check and evaluate the labeling quality, provide feedback and revise any non-standard tag additions, and continuously optimize the labeling quality; and the labeling rules and tagging system in the database are frequently updated and optimized.

[0046] This invention enables the database to be established and improved more quickly and accurately in a short period of time through AI training and input. Preferably, the database is a dynamic database that can be updated or upgraded in real time via the internet. In particular, it contains feature fields containing historical geographic information. When the literary or oral expression of historical information changes according to the current time (e.g., a new nickname or description for a historical figure emerges, specifically, Du Fu's nicknames have been updated to include Du Zimei, Du Shaoling, Du Shiyi, Du Gongbu, Du Caotang, Lao Du, Shaoling Yela, Shisheng, etc.), the database will be dynamically updated or upgraded in real time. The updates or upgrades of this invention are preferably information-overlaying and supplementary, rather than replacement-based, ensuring that the data content in the updated or upgraded database corresponds to the information markers in the original data content in the marked map database before the upgrade.

[0047] Users can perform active or passive operations, such as identifying and extracting contextual elements from text, images, or videos read by the reader, performing tag retrieval and matching of information tags in the database, and displaying at least some of the information tags on the matched electronic historical map Mn after a successful match.

[0048] Preferably, the information tagging method further includes the following steps: collecting and organizing local electronic historical maps Mp (e.g., based on historical events and / or containing local geographic information) Figure 1 M2-1 and M2-n in the map are part of Mp, and tags are set for the local electronic historical map based on the category of the information tags; after successful retrieval and matching, the corresponding local electronic historical map is directly retrieved and displayed based on the set tags. Specifically, in the tag map database of the present invention, such as Figure 1As shown, tags can be set for each geographic coordinate region, block division, or the smallest possible geographic unit U of each electronic map on M1, M2...Mn, and these tags can be assigned to the electronic map data layers D1 to Dn; in other words, tags such as... can be set on each of M1, M2...Mn. Figure 2 or Figure 3 The image shown is an electronic (historical) map that has been modularized into the smallest possible geographical units U or divided into blocks; furthermore, each layer in M1, M2...Mn can include several such... Figure 1 The present invention provides local electronic historical maps, such as M2-1 and M2-n, and sets corresponding labels on these local electronic historical maps, such as... Figure 1 The tags corresponding to M2-1 and M2-n are set as tag M2-1 and tag M2-n.

[0049] After the identified and extracted contextual elements are successfully retrieved and matched in the information tags of the marked map database, an electronic map matching the text being read is recommended to the reader, and / or at least some information tags are retrieved and displayed on the matching electronic historical map. For example, one outcome of this invention is to recommend a local electronic historical map to the reader, the content of which is that the local electronic map contains one or more map units M2-1 with tag settings, showing a local electronic historical map of the "Battle of Red Cliffs" from the Romance of the Three Kingdoms. The map unit includes a geographic coordinate area, block separation, or the smallest possible geographic unit U, that is: the recommended local electronic historical map is composed of one or more of the aforementioned map units.

[0050] It should be noted that in this invention, "user" and "reader" have the same meaning, referring to the actual user of the method, map, electronic device, computer-readable medium, or publication of this invention. The phrase "user actively or passively operating" in this invention refers to the user actively using the text recognition module to recognize text on paper publications or printed / sprayed works through scanning, photography, etc., or directly "passively" and "automatically" recognizing text in electronic documents on an electronic terminal device. For example, a reader can perform split-screen reading on their device, reading text on one screen while a recommended electronic historical map is displayed on another; or, a reader can read text on one part of a display screen while a recommended electronic historical map is displayed on other parts of that screen. More preferably, the text recognition also includes a step of acquiring speech information from audio media and converting it into text, or a step of acquiring subtitle information from video media and performing text recognition. This acquisition technology can employ existing text acquisition technologies.

[0051] Furthermore, in this embodiment, taking the historical record of "The Division of Jin into Three Families" in "Zizhi Tongjian" as an example, the working process of the electronic map recommendation method of the present invention is further explained.

[0052] First, the present invention provides an electronic map recommendation method based on text recognition, comprising the following steps: obtaining an electronic historical map Mn, and marking the electronic historical map with information to form an electronic map with information markings, wherein the information markings include at least time and / or dynasty information, and / or personal information, and / or feature fields containing historical geographical information; recognizing the text being read by the reader through a text recognition module, extracting contextual elements, wherein the contextual elements include time and / or dynasty information, and / or personal information, and feature fields containing historical geographical information; matching the information markings with the contextual elements, and displaying and recommending the entire or partial electronic historical map that matches the content of the contextual elements to the reader, so that the corresponding electronic historical map can be displayed to the reader simultaneously while reading.

[0053] Preferably, after the information markers are successfully matched with the context elements and the reader is shown or recommended an electronic map, either in whole or in part, that matches the content of the context elements, the reader is also shown or recommended at least a portion of the information marker content that matches the content of the context elements.

[0054] More preferably, a display threshold range for geographic coordinates (x, y) axes is set on the electronic historical map, and the entire or partial electronic historical map matching the content of the context element is displayed to the reader according to the display threshold range, centered on the geographic location that matches the content of the context element.

[0055] Specifically, such as Figure 1 , Figure 3 , Figure 4 As shown in Table 1, information was marked on electronic historical maps of the area near Shanxi Province in central China during the Spring and Autumn and Warring States periods, especially for the period from 438 BC to 425 BC and then to 403 BC. Specifically, geographical information tags (tag3) were used for geographical and topographical information such as "Jinyang City of the Zhao family by the Fen River, Anyi City of the Wei family by the Fen River, and Pingyang City of the Han family by the Jiang River" during this period. This information tag includes historical figures such as "Zhi Boyao, Zhao Xiangzi, Wei Hengzi, Han Kangzi, Xi Bi, Zhang Meng, Zhao Ji, Wei Si, Han Qian, King Weilie of Zhou, Duke Ai of Jin, and Duke You of Jin" (tag1), as well as feature fields (tag2) containing historical and geographical information such as "the division of Jin into three states, the saying 'when the lips are gone, the teeth are cold,' and the Spring and Autumn and Warring States periods." The information marking also includes geographical information marking of the territories and topography of various vassal states during the Spring and Autumn and Warring States periods from 438 BC to 425 BC and then to 403 BC.

[0056] Table 1

[0057]

[0058] When a reader uses a text recognition module in existing technology to identify and extract contextual elements such as people, time and / or dynasty information, geography, idioms and colloquialisms from the text, these contextual elements are matched with information markers on electronic historical maps in the database of this invention. The processor then recommends one, two or more electronic historical maps that match the text being read to the reader. In this embodiment, when a reader reads various original texts or compiled versions of the Zizhi Tongjian, the text recognition module identifies and extracts contextual elements related to the historical event of the "Partition of Jin by the Three Families" (these contextual elements include, but are not limited to, the time period from 438 BC to 403 BC, the historical period of the Spring and Autumn and Warring States periods, and textual fields such as "Zhi Boyao, Zhao Xiangzi, Wei Hengzi, Han Kangzi, Xi Bi, Zhang Meng, Zhao Ji, Wei Si, Han Qian, King Weilie of Zhou, Duke Ai of Jin, Duke You of Jin").

[0059] Then, the processor matches the contextual elements with the information markers in the electronic historical map, and pushes one, two or more electronic historical maps that match the text being read to the reader; after the reader selects and confirms from the pushed maps, the maps are displayed to the reader through a display mechanism, which includes a display screen, a display projection component, or an AR display device, etc.

[0060] This invention enables readers of different ages to intuitively understand the historical period of the "Partition of Jin" when reading different versions of the *Zizhi Tongjian*, the geographical locations of the three states of Zhao, Wei, and Han, and their approximate geographical locations in the surrounding area of ​​present-day Shanxi Province (Fen River: Zhao family, Jinyang City; Wei family, Anyi City; Jiang River: Han family, Pingyang City). Furthermore, it allows readers to understand the ins and outs of historical events such as Zhi Boyao, a minister of Jin, who, relying on his power, allied with Han and Wei to attack the Zhao family and divert the Fen River to flood Jinyang City. This allows readers to intuitively and clearly understand and deeply grasp the historical event and story.

[0061] Based on the above-described method of the present invention, the present invention also provides a preferred embodiment of an electronic map with information markings, wherein the electronic map described in the present invention is an electronic map formed by the method described in any of the above embodiments.

[0062] Specifically, the present invention can form an electronic map with information markings by marking on a current electronic map M0, or it can form a set of electronic maps with information markings by marking on an electronic historical map Mn and the current electronic map M0 respectively.

[0063] Furthermore, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor is configured to execute the method described when running the computer program.

[0064] The processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0065] The memory can be used to store the computer program and / or modules. The processor implements the information marking method and / or electronic map recommendation method of the invention by running or executing data stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function. In addition, the memory may include high-speed random access memory and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart memory card, secure digital card, flash memory card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0066] Furthermore, the present invention also provides a computer-readable medium having a computer program stored thereon, which, when executed, implements the method described thereon.

[0067] If the information tagging method and / or electronic map recommendation method are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by storing a computer program in a computer-readable storage medium. When executed by a processor, this computer program can implement the steps of the various method embodiments described above. The computer program includes computer program code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory, random access memory, dot carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the legislative and patent time requirements of the jurisdiction.

[0068] Furthermore, the present invention also provides a publication, which is a printed publication or an electronic publication equipped with a display device, wherein the publication is read using the aforementioned information marking method and / or electronic map recommendation method.

[0069] The electronic maps, electronic devices, computer-readable media, and publications provided by this invention offer readers different reading media, enabling historical (temporal) and geographical (spatial) information to be presented to readers more conveniently, quickly, and in a three-dimensional way through multimedia reading formats.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for marking electronic historical map information based on character recognition, characterized in that: The information tagging method includes the following steps: Collect and organize electronic historical maps (Mn) from multiple historical periods in history, geography, or archaeology, and set up a database corresponding to the geographic coordinates or blocks of the electronic historical maps (Mn) or the smallest possible geographic units U; In the database, the database is configured to contain two or more data layers. On the data layers, information tags are added in the order of time and / or dynasty based on the geographic coordinates or blocks separated or the smallest possible geographic units (U). The information tags include at least time and / or dynasty information, and / or personal information, as well as feature fields containing historical geographic information. The information markers are tagged according to categories, and the electronic historical maps (Mn) are tagged according to categories, or the multiple electronic historical maps are associated, corresponded to, or linked with the data layer according to the order of time and / or dynasty. Users can perform tag retrieval and matching of information tags in the database through active or passive operations. When a match is successful, at least some of the information tags are retrieved and displayed on the matched electronic historical map (Mn).

2. The information marking method according to claim 1, characterized in that: The information tagging method further includes the following steps: Collect and organize local electronic historical maps based on historical events and / or containing local geographic information, and set tags for the local electronic historical maps based on the categories of information tags; after successful retrieval and matching, directly retrieve and display the corresponding local electronic historical map.

3. The information marking method according to claim 1, characterized in that: The block division is to divide the electronic historical map (Mn) into several regions or plots according to historical territory, administrative division, or latitude and longitude coordinates. The block is an irregular shape of administrative block, or a regular shape of rectangle, square, or fan.

4. An electronic map recommendation method based on character recognition, characterized in that: The recommended method includes the following steps: Obtain an electronic historical map (Mn) and mark the electronic historical map with information to form an electronic map with information marking. The information marking includes at least time and / or dynasty information, and / or personal information, and / or feature fields containing historical geographical information. The text recognition module identifies the text, images, or videos read by the reader and extracts contextual elements, including time and / or dynasty information, and / or personal information, as well as feature fields containing historical and geographical information. The information tags are matched with the contextual elements, and the whole or part of the electronic historical map (Mn) that matches the content of the contextual elements is displayed or recommended to the reader. The corresponding electronic historical map (Mn) is displayed to the reader when the reader is reading.

5. The electronic map recommendation method according to claim 4, characterized in that: After the information markers are successfully matched with the contextual elements and the reader is shown or recommended an electronic map, either in whole or in part, that matches the content of the contextual elements, the reader is also shown or recommended at least a portion of the information marker content that matches the content of the contextual elements.

6. The electronic map recommendation method according to claim 4, characterized in that: The display threshold range of geographic coordinates (x, y) is set on the electronic historical map. Centered on the geographic location that matches the content in the context element, the entire or partial electronic historical map that matches the content of the context element is displayed to the reader according to the display threshold range.

7. An electronic map with historical information markings, characterized in that: The electronic map is an electronic map formed using the information marking method described in any one of claims 1 to 3.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, The processor is used to execute the method of any one of claims 1 to 6 when running the computer program.

9. A computer-readable medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the method of any one of claims 1 to 6.

10. A publication, said publication being a printed publication or an electronic publication equipped with a display device, characterized in that, The publication is read using the method described in any one of claims 1 to 6.

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