CN114461720A - Method, apparatus, device, storage medium and program product for processing map data - Google Patents

Abstract

The present disclosure provides a method, apparatus, device, storage medium and program product for processing map data, and relates to the field of computer technology, in particular, to the field of electronic map technology in intelligent transportation technology. The specific implementation scheme is: receiving a map zoom operation on the map display interface displaying the target map element; determining to load the first area of the target map element before receiving the map zoom operation, and determining to load the map zoom operation after receiving the map zoom operation the second area of the target map element; determine the overlapping area and the difference area between the first area and the second area; if the overlapping area is greater than the area threshold, determine the map data to be loaded corresponding to the target map element according to the difference area; The map data to be loaded is rendered to obtain the target map element, and the target map element is drawn on the map display interface. The present disclosure can improve the processing efficiency of map data and improve the stuck phenomenon.

Description

Method, apparatus, device, storage medium and program product for processing map data

technical field

The present disclosure relates to the field of computer technology, and in particular, to the field of electronic map technology in intelligent transportation technology.

Background technique

When creating map data, it is necessary to request, load, and render map data. For example, when performing operations on the map display interface, such as zooming the map or dragging the map to view map elements in different areas, each time a map operation is performed, map data needs to be requested, loaded, and rendered.

SUMMARY OF THE INVENTION

The present disclosure provides a method, apparatus, device, storage medium, and program product for processing map data.

According to an aspect of the present disclosure, there is provided a method for processing map data, comprising:

Receive a map zoom operation on the map display interface on which the target map element is displayed; determine to load the first area of the target map element before receiving the map zoom operation, and determine to load the target map element after receiving the map zoom operation the second area of the map data to be loaded; render the map data to be loaded to obtain the target map element, and draw the target map element on the map display interface.

According to another aspect of the present disclosure, there is provided an apparatus for processing map data, comprising:

a receiving unit, configured to receive a map zooming operation on the map display interface on which the target map element is displayed; a determining unit, configured to determine to load the first area of the target map element before receiving the map zooming operation, and determine to receive the After the map zooming operation, load the second area of the target map element, and determine the overlapping area and the difference area between the first area and the second area; the loading unit is used for determining that the overlapping area is larger than the area In the case of a threshold value, determine the map data to be loaded corresponding to the target map element according to the difference area; a rendering unit is used to render the map data to be loaded, obtain the target map element, and display it on the map The target map element is drawn on the interface.

According to another aspect of the present disclosure, there is provided an electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method described above.

According to another aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause the computer to perform the above-described method.

According to another aspect of the present disclosure, there is provided a computer program product comprising a computer program that, when executed by a processor, implements the above-described method.

In the method for processing map data provided by the present disclosure, the map data to be loaded corresponding to the target map element is determined according to the difference area, which can improve the processing efficiency of the map data and improve the stuck phenomenon.

It should be understood that what is described in this section is not intended to identify key or critical features of embodiments of the disclosure, nor is it intended to limit the scope of the disclosure. Other features of the present disclosure will become readily understood from the following description.

Description of drawings

The accompanying drawings are used for better understanding of the present solution, and do not constitute a limitation to the present disclosure. in:

1 is a flowchart of a method for processing map data according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an overlapping area and a difference area shown in an exemplary embodiment of the present disclosure;

3 is a schematic diagram of an area after the area is enlarged along the dragging direction shown in an exemplary embodiment of the present disclosure;

FIG. 4 is a flowchart of a method for determining map data to be loaded according to a difference area according to an exemplary embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an area after the area is enlarged in the surrounding direction of the area shown in an exemplary embodiment of the present disclosure;

6 is a flowchart of a method for processing map data according to an exemplary embodiment of the present disclosure;

FIG. 7 is a block diagram of an apparatus for processing map data according to an exemplary embodiment of the present disclosure;

8 is a block diagram of an electronic device used to implement the method for processing map data according to an embodiment of the present disclosure.

Detailed ways

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding and should be considered as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted from the following description for clarity and conciseness.

The method for processing map data provided by the present disclosure can be applied to a scene where map elements are loaded according to a map area. For example, it can be in the scenario of making map data to verify the difference information between the base map data and the actual target data, or it can be the scenario in which the specified target element is displayed by using the map search to display the target element. The present disclosure does not limit specific application scenarios.

In the related art, when map elements are loaded in the map area, if the user frequently performs map operations on the map display interface, such as map zooming operations, dragging operations, etc., it is necessary to frequently request and render map data. The map data request and rendering are required for each map zoom operation, which will cause multiple requests and renderings, resulting in the display freeze of the map display interface. For example, in the production of map data, when there is difference information between the base map data and the real objects in the real world, it is the most common, most intuitive and most effective way to judge whether the information is correct by looking at various photo materials.

With the increasing number of photo data and the fact that the operator needs to zoom the map frequently and drag the map to determine the viewing area during the verification process, it is necessary to frequently send requests and render the map data. In order to facilitate the operator to view the photo data of different areas. Based on the above situation, operators often experience lag when viewing photo data, which affects the operator's experience and verification efficiency.

In order to solve the stuck problem of displaying map elements during the current map data processing, the present disclosure provides a method for processing map data. The area determines the map data to be loaded, and renders the map data to be loaded, reducing the number of map data requests and rendering, thereby improving the stuck phenomenon.

In this disclosure, for the convenience of description, the area on the map where map elements are loaded before receiving the map zoom operation is referred to as the first area, and the area where map elements are loaded on the map after receiving the map operation is referred to as the second area.

Wherein, the area involved in the present disclosure may also be understood as a view range or a space range.

As an exemplary embodiment, FIG. 1 is a flowchart of a method for processing map data according to an exemplary embodiment of the present disclosure. Referring to FIG. 1, the method for processing map data includes the following steps S101 to S105.

In step S101, a map operation is received on the map display interface on which the target map element is displayed.

Wherein, the target map element in the present disclosure may be a map element that needs to be loaded when a user performs a map operation. For example, it may be the base map data for performing differential intelligence verification. Alternatively, it may be a target that the user searches on the map.

Among them, the map operation in the present disclosure can be understood as an operation that changes the loaded area when the same map element is loaded. The map operation may be, for example, a map zooming operation or a map dragging operation. Of course, the present disclosure does not limit the specific form of map operation.

In step S102, it is determined to load the first area of the target map element before receiving the map operation, and it is determined that the second area of the target map element to be loaded after receiving the map operation.

Wherein, in the present disclosure, the first area and the second area may be determined in a conventional manner of loading map elements based on the area. Among them, the target elements loaded in the first area and the second area are the same.

In step S103, the overlapping area and the difference area between the first area and the second area are determined.

Wherein, the overlapping area between the first area and the second area in the present disclosure can also be understood as the intersection area between the first area and the second area.

The difference area between the first area and the second area can also be understood as a non-intersection area between the first area and the second area.

As an exemplary embodiment, FIG. 2 is a schematic diagram of an overlapping area and a difference area shown in an exemplary embodiment of the present disclosure. Referring to FIG. 2 , an overlapping area exists between the first area and the second area, and a difference area 1 and a difference area 2 exist. The overlapping area, the difference area 1 and the difference area 2 constitute the second area.

In the present disclosure, the size of the overlapping area is determined, and whether the size of the overlapping area exceeds a set area threshold is determined. Wherein, if the set area threshold is exceeded, it can be determined that there is relatively more identical data between the first area and the second area, and in this case, data reloading and rendering are not required.

The region threshold may be an empirical value. For example, the area threshold may be 0.5.

Wherein, a typical scenario of whether the size of the overlapping area in the present disclosure exceeds the set area threshold may include that the original map area is enlarged or the dragged area is included in the last actual rendering range.

In step S104, if the overlapping area is greater than the area threshold, the map data to be loaded corresponding to the target map element is determined according to the difference area.

In step S105, the map data to be loaded is rendered to obtain the target map element, and the target map element is drawn on the map display interface.

In the present disclosure, the difference area between the first area and the second area before and after the map operation is determined, and according to the difference area, the to-be-loaded map data corresponding to the target map element to be loaded is determined, and the to-be-loaded map data in the difference area is determined. The map data is requested and rendered, and all the map data to be loaded in the second area is requested and rendered, which can reduce the number of map data requests and renderings, thereby improving the stuck phenomenon.

In an embodiment of the present disclosure, when the map data to be loaded corresponding to the target map element is determined according to the difference area, the map data corresponding to the target map element in the difference area may be determined as the map data to be loaded.

Referring to Figure 2, when the user performs a map operation, most of the overlapping area between the second area and the first area is located in the original first area, and the map data to be loaded corresponding to the overlapping area is the data that has been rendered. , so there is no need to reload and render again, just load and render the map data of the target map elements in difference area 1 and difference area 2.

The above-mentioned manner of determining the difference area based on the area comparison before and after the map operation in the embodiment of the present disclosure can be understood as a method of spatial difference comparison. Through a simple spatial difference comparison, compare the two areas before and after the user's map operation. When the overlapping area is large, request the data in the difference area and render it, so that the data in the overlapping area does not need to be re-requested and rendered again, which can save the map. The number of data requests and renderings to improve the stuttering phenomenon caused by a large amount of data loading and rendering.

In another embodiment of the present disclosure, if the overlapping area between the first area and the second area is less than or equal to the area threshold, the processing time for calculating the difference area may be greater than the time for rendering map data in the overlapping area. Therefore, when the overlapping area between the first area and the second area is less than or equal to the area threshold, the map data corresponding to the target map element in the second area can be determined as the map data to be loaded, and the map data in the second area can be rendered and loaded. The map data corresponding to the target map element to be loaded does not need to implement the processing method of the difference area to ensure the data rendering efficiency.

In another embodiment of the present disclosure, in order to improve the jam phenomenon that occurs when the map data is loaded in real time, the present disclosure may perform preloading of regions.

Wherein, in an exemplary embodiment, when performing region preloading in the present disclosure, for example, the region that originally needs to be loaded may be enlarged to realize the preloading of subsequent loading regions. For example, in the present disclosure, the second area can be enlarged to realize preloading of areas after the second area. Alternatively, in the present disclosure, the first area may be enlarged, and the second area may be preloaded when the first area is loaded.

In the present disclosure, in order to realize the preloading of the area, on the one hand, based on the map operation, it is possible to learn the area where the user may subsequently load the target map element, and then expand the corresponding area. For example, if the map operation is a drag operation, according to the user's usage habits, it can be determined whether the user's next drag operation is likely to be performed in the drag direction of the drag operation. Therefore, in the present disclosure, the dragging direction can be determined according to the dragging distance and the dragging angle of the dragging operation, and then the area is enlarged along the dragging direction.

As an exemplary embodiment, FIG. 3 is a schematic diagram of an area after the area is enlarged along the dragging direction shown in an exemplary embodiment of the present disclosure. Referring to FIG. 3 , the area where the target element is to be loaded after the user drags in the direction of the arrow (upper right direction) is the second area. The second area can be understood as the area that originally needs to be loaded. By applying the embodiment of the present disclosure, the second area is enlarged in the direction of the arrow (upper right direction) to obtain an enlarged area. When performing area loading, the enlarged area is loaded, thereby realizing preloading of the enlarged area relative to the area of the enlarged portion of the second area.

In the present disclosure, by learning the user's drag operation, the drag distance and the drag angle corresponding to the next drag operation are determined, and then the drag direction is determined, the second area is expanded along the drag direction, and the The enlarged area is loaded, and the preloading of the area can be realized. When the user drags in the same dragging direction next time, it is not necessary to load and render the data in the loaded area again, which can save the number of map data requests and renderings, and improve the problems caused by a large amount of data loading and rendering. Stuttering caused by rendering.

As an exemplary implementation, when performing region preloading in the present disclosure, the region may be enlarged based on the difference between the first region and the second region. For example, in the present disclosure, after the difference area between the first area and the second area is determined, the data to be loaded may be determined in the manner of FIG. 4 .

FIG. 4 is a flowchart of a method for determining map data to be loaded according to a difference area according to an exemplary embodiment of the present disclosure. Referring to FIG. 4 , the following steps S201 to S203 are included.

In step S201, it is determined that the map operation is a drag operation, and the drag direction of the drag operation is determined.

The dragging direction of the dragging operation may be determined according to the dragging distance and the dragging angle.

In step S202, a difference area between the first area and the second area is determined, and the difference area is enlarged in the dragging direction.

In step S203, the map data corresponding to the target map element in the enlarged difference area is determined as the map data to be loaded.

In the present disclosure, the map data corresponding to the target map element in the enlarged difference area is determined as the map data to be loaded, and the subsequent loading and rendering of the map data to be loaded can be understood as the realization of the second area. Region preloading. When the user drags in the same dragging direction next time, it is not necessary to load and render the data in the loaded area again, which can save the number of map data requests and renderings, and improve the problems caused by a large amount of data loading and rendering. Stuttering caused by rendering.

Among them, combined with the actual application scenario, if the drag distance of the user's drag operation on the map is relatively small, the user has a high probability that the operation needs to be performed in a relatively concentrated area, that is, the next drag operation is more likely to be In the drag direction of this drag operation. That is, in the present disclosure, in the manner of performing region preloading by expanding the region based on the drag operation direction, the drag distance for the user's drag operation on the map needs to be relatively small. In this embodiment of the present disclosure, a distance threshold may be set, and the distance threshold may be an empirical value.

When it is determined that the drag distance of the user's drag operation on the map is less than the distance threshold, the method of expanding the area based on the direction of the drag operation and preloading the area is adopted.

In one embodiment, the present disclosure may determine that the drag distance corresponding to the drag operation is less than or equal to the distance threshold before expanding the difference area in the dragging direction, so that the preloaded area can become the next lower area with a high probability. A region to load at a time.

In the present disclosure, if the drag distance of the user's drag operation on the map is relatively large, the second area may not be associated with the first area, and the second area may be used as a new initial loading area. Therefore, in this way, the preloading way of expanding the area in the dragging direction may not be used.

In another embodiment of the present disclosure, when implementing area preloading, the surrounding directions of the area may also be expanded respectively, so that the subsequent user drags the map in which direction, there may be a preloaded area. , which can save the number of map data requests and renderings, and improve the stuck phenomenon caused by a large amount of data loading and rendering.

As an exemplary embodiment, FIG. 5 is a schematic diagram of an area after the area is enlarged in the peripheral direction of the area shown in an exemplary embodiment of the present disclosure. Referring to FIG. 5 , area expansion is performed around the current area to obtain an expanded area. When performing area loading, the enlarged area is loaded, thereby realizing preloading of the enlarged area relative to the area of the enlarged portion of the second area.

Wherein, the manner of enlarging the surrounding area in the present disclosure may be applicable to the case where the subsequent drag direction cannot be determined at present. For example, in the present disclosure, an area condition that adopts a surrounding expansion method can be set. When this condition is satisfied, the method of expanding in the surrounding direction is adopted.

In the present disclosure, under the condition that the preset area of the target map element is loaded, the preset area can be respectively enlarged in the surrounding directions, and the map data corresponding to the target map element in the enlarged preset area can be preloaded.

In the present disclosure, by setting a condition that satisfies the loading of the preset area of the target map element, it is possible to expand the preset area by using the surrounding directions when the condition is met, so that subsequent users can drag and drop the map in any direction. , if the area of the current window (or view) is within the actual rendering area, that is, there is a preloaded area, then there is no need to request and render data again, which saves request and rendering time, and improves the problem caused by a large amount of data loading and rendering. Caton phenomenon.

Wherein, satisfying the condition for loading the preset area of the target map element may include, for example, performing the rendering of the map element for the first time. Alternatively, when the map operation is a drag operation, and the drag distance corresponding to the drag operation is greater than the distance threshold, it is determined that the conditions for loading the preset area of the target map element are satisfied.

In the present disclosure, the map element rendering is performed for the first time, and/or the dragging distance corresponding to the dragging operation is greater than the distance threshold, which may be a scenario in which the user is not sure which direction the user is dragging the map in. Therefore, this situation is determined. In order to meet the conditions for loading the preset area of the target map element, it is more suitable for the actual use situation and improves the map operation experience.

In an actual application scenario, there is a user's operation on the map such that the area to which the data to be rendered in the second area belongs belongs to the area actually rendered in the first area, for example, a map zoom-out operation. At this time, the map elements to be rendered in the second area are the map elements in the first area that have been rendered, and there is no need to repeat the rendering again. Therefore, in an embodiment of the present disclosure, if the user operates the map so that the area to which the data to be rendered in the second area belongs belongs to the area actually rendered in the first area, such as a map zooming operation. At this time, the map elements to be rendered in the second area are the already rendered map elements in the first area. At this time, there is no need to repeat the rendering again, and the rendered map elements in the first area can be kept as the map elements in the second area. Displayed map elements to reduce rendering times and improve stuttering.

In another embodiment of the present disclosure, if it is determined that the area to which the data to be rendered belongs in the second area does not belong to the first area, the map elements need to be re-rendered, so the method involved in the various embodiments of the present disclosure can be used. The map data processing method determines the preloaded data to reduce the number of renderings and improve the stuck phenomenon.

The present disclosure will hereinafter describe the method for processing map data involved in the present disclosure in combination with practical applications.

As an exemplary embodiment, FIG. 6 is a flowchart of a method for processing map data according to an exemplary embodiment of the present disclosure. Referring to FIG. 6 , when the map element is rendered for the first time, the area where the map element is rendered may be expanded by enlarging the surrounding directions, and the expanded area may be preloaded as a whole area. The preloaded overall area may be understood as the first area involved in the above embodiments of the present disclosure. The user performs a map operation on the map display interface, such as a drag and drop operation. In the present disclosure, it can be determined whether the area (second area) after the map operation is within the range of the area actually rendered last time (the first area), and if the area after the map operation is within the range of the area actually rendered last time, then No need to render again. If the area after the map operation is not within the range of the area actually rendered last time, the overlapping area and the difference area between the area after the map operation and the area actually rendered last time can be determined. If the overlapping area is less than or equal to 0.5, all map data in the area after the map operation can be requested and rendered. If the overlapping area is greater than 0.5, the drag direction of the user's drag operation can be determined, and the difference area can be enlarged according to the drag direction of the user's drag operation, and the map data corresponding to the enlarged difference area is requested for loading and rendering. , in order to save the number of map data requests and renderings, and improve the stuck phenomenon caused by a large number of data requests and renderings.

The method for processing map data provided by the present disclosure proposes two optimization ideas of preloading and spatial difference comparison to solve the problem of stuck map display interface when map elements are loaded, thereby reducing user waiting time and improving user experience. For example, in the differential intelligence verification scenario, the efficiency of intelligence verification can be improved.

Based on the same concept, an embodiment of the present disclosure also provides an apparatus for processing map data.

It can be understood that, in order to realize the above-mentioned functions, the apparatus for processing map data provided by the embodiments of the present disclosure includes corresponding hardware structures and/or software modules for executing each function. Combining with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

As an exemplary embodiment, FIG. 7 is a block diagram of an apparatus for processing map data shown in an exemplary embodiment of the present disclosure. Referring to FIG. 7 , the apparatus 700 for processing map data includes a receiving unit 701 , a determining unit 702 , a loading unit 703 and a rendering unit 704 .

Among them, the receiving unit 701 is used to receive the map operation on the map display interface displaying the target map element; the determining unit 702 is used to determine the first area to load the target map element before receiving the map operation, and to determine that the map operation is loaded after receiving the map operation. The second area of the target map element, and determine the overlap area and the difference area between the first area and the second area; the loading unit 703 is configured to determine the difference area according to the difference area when the overlap area is greater than the area threshold. The map data to be loaded corresponding to the target map element; the rendering unit 704 is configured to render the to-be-loaded map data, obtain the target map element, and draw the target map element on the map display interface.

The loading unit 703 determines the map data corresponding to the target map element in the difference area as the map data to be loaded.

Wherein, the loading unit 703 determines the map data to be loaded according to the difference area in the following manner:

If the map operation is a dragging operation, determine the dragging direction of the dragging operation; expand the difference area along the dragging direction; determine the map data corresponding to the target map element in the expanded difference area as to be loaded map data.

The loading unit 703 is further configured to: determine that the drag distance corresponding to the drag operation is less than or equal to the distance threshold before expanding the difference area along the drag direction.

Wherein, the loading unit 703 is further configured to: under the condition that the preset area of the target map element is loaded, expand the preset area in the surrounding directions respectively, and perform map data corresponding to the target map element in the expanded preset area. Preloading.

Wherein, satisfying the conditions for loading the preset area of the target map element includes: rendering the map element for the first time; and/or, the map operation is a drag operation, and the drag distance corresponding to the drag operation is greater than the distance threshold.

Wherein, the loading unit 703 is further configured to: determine the map data corresponding to the target map element in the second region as the map data to be loaded when the overlapped region is determined to be less than or equal to the region threshold.

The determining unit 702 is further configured to: determine that the region to which the data to be rendered in the second region belongs does not belong to the region actually rendered in the first region.

Wherein, if the determining unit 702 determines that the area to which the data to be rendered belongs in the second area belongs to the area actually rendered in the first area, the rendering unit 704 keeps the rendered map elements in the first area as the map elements displayed in the second area .

Regarding the above-mentioned apparatus of the present disclosure, the specific manner in which each module performs operations has been described in detail in the embodiments of the method, and will not be described in detail here.

In the technical solution of the present disclosure, the acquisition, storage and application of the user's personal information involved are all in compliance with the provisions of relevant laws and regulations, and do not violate public order and good customs.

According to embodiments of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium, and a computer program product.

FIG. 8 shows a schematic block diagram of an example electronic device 800 that may be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are by way of example only, and are not intended to limit implementations of the disclosure described and/or claimed herein.

As shown in FIG. 8 , the device 800 includes a computing unit 801 that can be executed according to a computer program stored in a read only memory (ROM) 802 or a computer program loaded from a storage unit 808 into a random access memory (RAM) 803 Various appropriate actions and handling. In the RAM 803, various programs and data necessary for the operation of the device 800 can also be stored. The computing unit 801 , the ROM 802 , and the RAM 803 are connected to each other through a bus 804 . An input/output (I/O) interface 805 is also connected to bus 804 .

Various components in the device 800 are connected to the I/O interface 805, including: an input unit 806, such as a keyboard, mouse, etc.; an output unit 807, such as various types of displays, speakers, etc.; a storage unit 808, such as a magnetic disk, an optical disk, etc. ; and a communication unit 809, such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 809 allows the device 800 to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunication networks.

Computing unit 801 may be various general-purpose and/or special-purpose processing components with processing and computing capabilities. Some examples of computing units 801 include, but are not limited to, central processing units (CPUs), graphics processing units (GPUs), various specialized artificial intelligence (AI) computing chips, various computing units that run machine learning model algorithms, digital signal processing processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 801 performs the various methods and processes described above, such as a method of processing map data. For example, in some embodiments, a method of processing map data may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as storage unit 808 . In some embodiments, part or all of the computer program may be loaded and/or installed on device 800 via ROM 802 and/or communication unit 809 . When a computer program is loaded into RAM 803 and executed by computing unit 801, one or more steps of the method of processing map data described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured by any other suitable means (eg, by means of firmware) to perform the method of processing map data.

Various implementations of the systems and techniques described herein above may be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips system (SOC), load programmable logic device (CPLD), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include being implemented in one or more computer programs executable and/or interpretable on a programmable system including at least one programmable processor that The processor, which may be a special purpose or general-purpose programmable processor, may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device an output device.

Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer or other programmable data processing apparatus, such that the program code, when executed by the processor or controller, performs the functions/functions specified in the flowcharts and/or block diagrams. Action is implemented. The program code may execute entirely on the machine, partly on the machine, partly on the machine and partly on a remote machine as a stand-alone software package or entirely on the remote machine or server.

In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in connection with the instruction execution system, apparatus or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media would include one or more wire-based electrical connections, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), fiber optics, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.

To provide interaction with a user, the systems and techniques described herein may be implemented on a computer having a display device (eg, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user ); and a keyboard and pointing device (eg, a mouse or trackball) through which a user can provide input to the computer. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (eg, visual feedback, auditory feedback, or tactile feedback); and can be in any form (including acoustic input, voice input, or tactile input) to receive input from the user.

The systems and techniques described herein may be implemented on a computing system that includes back-end components (eg, as a data server), or a computing system that includes middleware components (eg, an application server), or a computing system that includes front-end components (eg, a user's computer having a graphical user interface or web browser through which a user may interact with implementations of the systems and techniques described herein), or including such backend components, middleware components, Or any combination of front-end components in a computing system. The components of the system may be interconnected by any form or medium of digital data communication (eg, a communication network). Examples of communication networks include: Local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

A computer system can include clients and servers. Clients and servers are generally remote from each other and usually interact through a communication network. The relationship of client and server arises by computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, a distributed system server, or a server combined with blockchain.

It should be understood that steps may be reordered, added or deleted using the various forms of flow shown above. For example, the steps described in the present disclosure can be executed in parallel, sequentially, or in different orders. As long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, there is no limitation herein.

The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present disclosure should be included within the protection scope of the present disclosure.

Claims (21)

1. A method of processing map data, comprising: Receive map operations on the map display interface displaying the target map element; determining a first area for rendering the target map element before receiving the map operation, and determining a second area for loading the target map element after receiving the map operation; determining an overlap area and a difference area between the first area and the second area; If the overlapping area is greater than the area threshold, determining the map data to be loaded corresponding to the target map element according to the difference area; The map data to be loaded is rendered to obtain the target map element, and the target map element is drawn on the map display interface. 2. The method according to claim 1, wherein the determining according to the difference area to-be-loaded map data corresponding to the target map element comprises: The map data corresponding to the target map element in the difference area is determined as the map data to be loaded. 3. The method according to claim 1, wherein the determining the map data to be loaded according to the difference area comprises: If the map operation is a drag operation, determining the drag direction of the drag operation; expanding the difference area along the dragging direction; The map data corresponding to the target map element in the enlarged difference area is determined as the map data to be loaded. 4. The method of claim 3, further comprising: Before expanding the difference area along the dragging direction, it is determined that the dragging distance corresponding to the dragging operation is less than or equal to a distance threshold. 5. The method of any one of claims 1-4, further comprising: Under the condition that the preset area loading of the target map element is satisfied, the preset area is respectively enlarged in the surrounding directions, and the map data corresponding to the target map element in the enlarged preset area is preloaded. 6. The method according to claim 5, wherein the satisfying the condition for loading the preset area of the target map element comprises: Rendering of the map element is performed for the first time; The map operation is a drag operation, and the drag distance corresponding to the drag operation is greater than a distance threshold. 7. The method of claim 1, further comprising: If the overlapping area is less than or equal to the area threshold, the map data corresponding to the target map element in the second area is determined as the map data to be loaded. 8. The method of claim 1, further comprising: It is determined that the second area does not belong to the first area. 9. The method of claim 1, further comprising: If the second area belongs to the first area, the rendered map elements in the first area are kept as map elements to be rendered in the second area. 10. An apparatus for processing map data, comprising: a receiving unit, configured to receive a map operation on the map display interface displaying the target map element; The determining unit is configured to determine the first area where the target map element is loaded before receiving the map operation, and determine the second area where the target map element is loaded after receiving the map operation, and determine the first area and the target map element. an overlapping area and a difference area between the second areas; a loading unit, configured to determine the map data to be loaded corresponding to the target map element according to the difference area when it is determined that the overlapping area is greater than an area threshold; A rendering unit, configured to render the map data to be loaded, obtain the target map element, and draw the target map element on the map display interface. 11. The apparatus according to claim 10, wherein the loading unit determines the map data to be loaded corresponding to the target map element according to the difference area in the following manner: The map data corresponding to the target map element in the difference area is determined as the map data to be loaded. 12. The apparatus according to claim 10, wherein the loading unit determines the map data to be loaded according to the difference area in the following manner: If the map operation is a drag operation, determining the drag direction of the drag operation; expanding the difference area along the dragging direction; The map data corresponding to the target map element in the enlarged difference area is determined as the map data to be loaded. 13. The apparatus of claim 12, the loading unit further configured to: Before expanding the difference area along the dragging direction, it is determined that the dragging distance corresponding to the dragging operation is less than or equal to a distance threshold. 14. The apparatus according to any one of claims 10-13, the loading unit is further configured to: Under the condition that the preset area loading of the target map element is satisfied, the preset area is respectively enlarged in the surrounding directions, and the map data corresponding to the target map element in the enlarged preset area is preloaded. 15. The apparatus according to claim 14, wherein the satisfying the condition for loading the preset area of the target map element comprises: Rendering of the map element is performed for the first time; The map operation is a drag operation, and the drag distance corresponding to the drag operation is greater than a distance threshold. 16. The apparatus of claim 10, the loading unit further configured to: When it is determined that the overlapping area is less than or equal to the area threshold, the map data corresponding to the target map element in the second area is determined as the map data to be loaded. 17. The apparatus according to claim 10, the determining unit is further configured to: It is determined that the second area does not belong to the first area. 18. The apparatus of claim 10, the rendering unit, further configured to: If it is determined that the second area belongs to the first area, the rendered map elements in the first area are kept as map elements to be rendered in the second area. 19. An electronic device comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the execution of any of claims 1-9 Methods. 20. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any of claims 1-9. 21. A computer program product comprising a computer program which, when executed by a processor, implements the method of any of claims 1-9.

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