CN113934351A - Map screenshot method and device and computer-readable storage medium - Google Patents
Map screenshot method and device and computer-readable storage medium Download PDFInfo
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- CN113934351A CN113934351A CN202111202745.2A CN202111202745A CN113934351A CN 113934351 A CN113934351 A CN 113934351A CN 202111202745 A CN202111202745 A CN 202111202745A CN 113934351 A CN113934351 A CN 113934351A
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Abstract
The embodiment of the disclosure discloses a map screenshot method and device and a computer-readable storage medium, wherein the method comprises the following steps: determining a first rectangular frame corresponding to the screenshot request based on the coordinates, the length and the width of a central point corresponding to the received screenshot request; zooming the first rectangular frame to obtain a zoomed second rectangular frame; determining a target scaling ratio for scaling the map based on the at least one label included in the first rectangular frame and the second rectangular frame; performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result; in the embodiment, the target zoom scale is determined by combining the annotation tags, so that the target screenshot result obtained by zooming the map by using the first rectangular frame comprises all the annotation tags, the map screenshot with the annotation tags is realized, and the problem that the annotation tags are absent or the annotation tags are not completely displayed in the screenshot result is solved.
Description
Technical Field
The present disclosure relates to a map screenshot technology, and more particularly, to a map screenshot method and apparatus, and a computer-readable storage medium.
Background
The map screenshot refers to screenshot in which a reference point is provided as a central point and the width and height required by the screenshot. A map shot of POI tags refers to a series of POI tag modules that are included in addition to the center point and width and height required for the shot. For example, a coordinate point of a certain cell is used as a central point, a square circle 3 km is used as a width and a height required by screenshot, and the POI tag content is information of all schools, supermarkets, hospitals and the like within 3 km of the square circle of the cell.
Disclosure of Invention
The present disclosure is proposed to solve the above technical problems. The embodiment of the disclosure provides a map screenshot method and device and a computer-readable storage medium.
According to an aspect of an embodiment of the present disclosure, there is provided a map capture method, including:
determining a first rectangular frame corresponding to the screenshot request based on the coordinates, the length and the width of a central point corresponding to the received screenshot request;
zooming the first rectangular frame to obtain a zoomed second rectangular frame;
determining a target scaling for scaling the map based on the at least one annotation label included in the first rectangular frame and the second rectangular frame;
and performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
Optionally, the scaling the first rectangular frame to obtain a scaled second rectangular frame includes:
and zooming the first rectangular frame in a constant aspect ratio according to a set proportion to obtain a zoomed second rectangular frame.
Optionally, the determining a target zoom scale for zooming the map based on the at least one annotation tag included in the first rectangular frame and the second rectangular frame includes:
determining at least one label included in the rectangular frame of the map based on the rectangular frame, and determining a label frame corresponding to each label in the at least one label;
determining a third rectangular frame based on the at least one label frame and the center point coordinates;
and performing scaling on the third rectangular frame based on the second rectangular frame, and determining a target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling.
Optionally, the determining a third rectangular frame based on the at least one label frame and the center point coordinate includes:
obtaining a plurality of label vertex coordinates corresponding to each label frame in the at least one label frame;
determining four target vertices from the plurality of label vertex coordinates and the center point coordinates;
and obtaining a third rectangular frame comprising the at least one label frame and the center point coordinate based on the four target vertexes.
Optionally, the determining four target vertices from the plurality of label vertex coordinates and the center point coordinates comprises:
determining an x-axis maximum and an x-axis minimum of the plurality of label vertex coordinates and the center point coordinate on an x-axis and a y-axis maximum and a y-axis minimum on a y-axis in the map;
determining the four target vertices based on the x-axis maximum, the x-axis minimum, the y-axis maximum, and the y-axis minimum.
Optionally, the performing scaling on the third rectangular frame based on the second rectangular frame, and determining a target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling includes:
aligning the frame center point of the third rectangular frame with the center point coordinate;
scaling the third rectangular frame based on the second rectangular frame, so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame;
determining a target scaling based on a relationship between the third rectangular box and the fourth rectangular box.
Optionally, the scaling the third rectangular frame based on the second rectangular frame, so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame, includes:
determining a first ratio of the length of the third rectangular frame to the length of the second rectangular frame, determining a second ratio of the width of the third rectangular frame to the width of the second rectangular frame;
in response to the first ratio being greater than or equal to the second ratio, performing aspect ratio-invariant scaling on the third rectangular frame based on the first ratio to obtain the fourth rectangular frame;
and in response to the first proportion being smaller than the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the second proportion to obtain the fourth rectangular frame.
Optionally, the performing a screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result includes:
carrying out corresponding zooming operation on the map according to the target zooming scale to obtain a target map;
and performing screenshot operation on the target map according to the first rectangular frame and the central point coordinate to obtain a target screenshot result.
According to another aspect of the embodiments of the present disclosure, there is provided a map capture apparatus, including:
the first rectangular frame module is used for determining a first rectangular frame corresponding to the screenshot request based on the center point coordinate, the length and the width corresponding to the received screenshot request;
the first zooming module is used for zooming the first rectangular frame to obtain a zoomed second rectangular frame;
a target scale determination module, configured to determine a target scale for zooming the map based on the at least one annotation tag included in the first rectangular frame and the second rectangular frame;
and the screenshot module is used for carrying out screenshot operation on the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
Optionally, the first scaling module is specifically configured to scale the first rectangular frame according to a set ratio with an unchanged aspect ratio, so as to obtain a scaled second rectangular frame.
Optionally, the target ratio determining module includes:
the label frame unit is used for determining at least one label included in the rectangular frame of the map based on the rectangular frame and determining a label frame corresponding to each label in the at least one label;
a third rectangular frame unit for determining a third rectangular frame based on the at least one tag frame and the center point coordinates;
a scaling determining unit, configured to perform scaling on the third rectangular frame based on the second rectangular frame, and determine a target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling.
Optionally, the third rectangular frame unit is specifically configured to obtain vertex coordinates of a plurality of labels corresponding to each label frame in the at least one label frame; determining four target vertices from the plurality of label vertex coordinates and the center point coordinates; and obtaining a third rectangular frame comprising the at least one label frame and the center point coordinate based on the four target vertexes.
Optionally, the third rectangular frame unit is configured to determine an x-axis maximum value and an x-axis minimum value of the plurality of label vertex coordinates and the center point coordinate on an x-axis and a y-axis maximum value and a y-axis minimum value on a y-axis in the map when four target vertices are determined from the plurality of label vertex coordinates and the center point coordinate; determining the four target vertices based on the x-axis maximum, the x-axis minimum, the y-axis maximum, and the y-axis minimum.
Optionally, the scaling determining unit is specifically configured to align a frame center point of the third rectangular frame with the center point coordinate; scaling the third rectangular frame based on the second rectangular frame, so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame; determining a target scaling based on a relationship between the third rectangular box and the fourth rectangular box.
Optionally, when the scaling determination unit scales the third rectangular frame based on the second rectangular frame so that a scaled fourth rectangular frame is completely included in the second rectangular frame, the scaling determination unit is configured to determine a first ratio of a length of the third rectangular frame to a length of the second rectangular frame, and determine a second ratio of a width of the third rectangular frame to a width of the second rectangular frame; in response to the first ratio being greater than or equal to the second ratio, performing aspect ratio-invariant scaling on the third rectangular frame based on the first ratio to obtain the fourth rectangular frame; and in response to the first proportion being smaller than the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the second proportion to obtain the fourth rectangular frame.
Optionally, the screenshot module is specifically configured to perform a corresponding zoom operation on the map according to the target zoom scale to obtain a target map; and performing screenshot operation on the target map according to the first rectangular frame and the central point coordinate to obtain a target screenshot result.
According to still another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium storing a computer program for executing the map screenshot method according to any of the embodiments.
According to still another aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to read the executable instruction from the memory and execute the instruction to implement the map screenshot method according to any of the embodiments.
Based on the map screenshot method and device and the computer-readable storage medium provided by the above embodiments of the present disclosure, a first rectangular frame corresponding to a screenshot request is determined based on a center point coordinate, a length and a width corresponding to the received screenshot request; zooming the first rectangular frame to obtain a zoomed second rectangular frame; determining a target scaling for scaling the map based on the at least one annotation label included in the first rectangular frame and the second rectangular frame; performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result; in the embodiment, the target zoom scale is determined by combining the annotation tags, so that the target screenshot result obtained by zooming the map by using the first rectangular frame comprises all the annotation tags, the map screenshot with the annotation tags is realized, and the problem that the annotation tags are absent or the annotation tags are not completely displayed in the screenshot result is solved.
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in more detail embodiments of the present disclosure with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. In the drawings, like reference numbers generally represent like parts or steps.
Fig. 1 is a flowchart illustrating a map screenshot method according to an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic zooming diagram of a first rectangular box in an optional example of a map screenshot method provided by an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic flow chart of step 106 in the embodiment shown in fig. 1 of the present disclosure.
Fig. 4 is a schematic diagram of a third rectangular box in an alternative example of the map screenshot method provided by an exemplary embodiment of the present disclosure.
Fig. 5a is a schematic flow chart of step 1063 in the embodiment shown in fig. 3 of the present disclosure.
Fig. 5b is a schematic structural diagram of a third rectangular frame and a second rectangular frame after center points are aligned in an optional example of the map screenshot method provided in an exemplary embodiment of the present disclosure.
Fig. 5c is a schematic structural diagram of a zoomed third rectangular frame in an optional example of the map screenshot method provided by the exemplary embodiment of the present disclosure.
Fig. 6 is a schematic flow chart of step 108 in the embodiment shown in fig. 1 of the present disclosure.
Fig. 7 is a schematic structural diagram of a map screenshot device according to an exemplary embodiment of the present disclosure.
Fig. 8 is a block diagram of an electronic device provided in an exemplary embodiment of the present disclosure.
Detailed Description
Hereinafter, example embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the embodiments of the present disclosure and not all embodiments of the present disclosure, with the understanding that the present disclosure is not limited to the example embodiments described herein.
It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
It will be understood by those of skill in the art that the terms "first," "second," and the like in the embodiments of the present disclosure are used merely to distinguish one element from another, and are not intended to imply any particular technical meaning, nor is the necessary logical order between them.
It is also understood that in embodiments of the present disclosure, "a plurality" may refer to two or more and "at least one" may refer to one, two or more.
It is also to be understood that any reference to any component, data, or structure in the embodiments of the disclosure, may be generally understood as one or more, unless explicitly defined otherwise or stated otherwise.
In addition, the term "and/or" in the present disclosure is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in the present disclosure generally indicates that the former and latter associated objects are in an "or" relationship. The data referred to in this disclosure may include unstructured data, such as text, images, video, etc., as well as structured data.
It should also be understood that the description of the various embodiments of the present disclosure emphasizes the differences between the various embodiments, and the same or similar parts may be referred to each other, so that the descriptions thereof are omitted for brevity.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The disclosed embodiments may be applied to electronic devices such as terminal devices, computer systems, servers, etc., which are operational with numerous other general purpose or special purpose computing system environments or configurations. Examples of well known terminal devices, computing systems, environments, and/or configurations that may be suitable for use with electronic devices, such as terminal devices, computer systems, servers, and the like, include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, hand-held or laptop devices, microprocessor-based systems, set top boxes, programmable consumer electronics, network pcs, minicomputer systems, mainframe computer systems, distributed cloud computing environments that include any of the above systems, and the like.
Electronic devices such as terminal devices, computer systems, servers, etc. may be described in the general context of computer system-executable instructions, such as program modules, being executed by a computer system. Generally, program modules may include routines, programs, objects, components, logic, data structures, etc. that perform particular tasks or implement particular abstract data types. The computer system/server may be practiced in distributed cloud computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed cloud computing environment, program modules may be located in both local and remote computer system storage media including memory storage devices.
Summary of the application
In the process of implementing the present disclosure, the inventor finds that the conventional map screenshot method takes a central point as the center of a screenshot area, but the conventional map screenshot method has at least the following problems: all POI tags can not be guaranteed to be in the visual field, and the usability of the picture generated by the screenshot tool is greatly reduced. In the map product, information around a certain geographic location is referred to as a POI.
Exemplary method
Fig. 1 is a flowchart illustrating a map screenshot method according to an exemplary embodiment of the present disclosure. The embodiment can be applied to an electronic device, as shown in fig. 1, and includes the following steps:
and 102, determining a first rectangular frame corresponding to the screenshot request based on the coordinates, the length and the width of the central point corresponding to the received screenshot request.
Optionally, the map screenshot is an operation of acquiring a certain area in the map, so that the size of the area that needs to be acquired in the map is defined by the coordinates of the central point, the length of the screenshot and the width of the screenshot in the screenshot request received in this embodiment, and optionally, the size of the screenshot area is represented by a first rectangular frame in this embodiment.
And 104, zooming the first rectangular frame to obtain a zoomed second rectangular frame.
Zooming in this embodiment is usually a zoom-out operation, so as to show the main information in the screenshot part in the first rectangular box and relatively concentrate on the middle area, so as to achieve better layout and improve the user experience.
And step 106, determining a target scaling ratio for scaling the map based on the at least one label included in the first rectangular frame and the second rectangular frame.
In this embodiment, when at least one annotation tag included in the first rectangular frame may be displayed outside the first rectangular frame, the map needs to be scaled accordingly, so that, when a screenshot is finally performed based on the first rectangular frame, all complete annotation tags are included in an obtained screenshot result, optionally, a target scaling is determined by using the at least one annotation tag and the second rectangular frame, and the map is processed based on the target scaling, so that all annotation tags are displayed in the second rectangular frame.
And step 108, performing screenshot operation on the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
Optionally, the map is zoomed according to the target zoom scale determined in the above steps, but the size of the first rectangular frame remains unchanged, so that a relatively larger map area (map zooming-out operation) can be obtained from the target screenshot result obtained by screenshot in this embodiment, it is ensured that all the label tags in the obtained target screenshot result are located at the center of the target screenshot result as much as possible, and the situations of cutting and label tags appearing outside the field of view do not occur.
According to the map screenshot method provided by the embodiment of the disclosure, based on the coordinates, the length and the width of a central point corresponding to a received screenshot request, a first rectangular frame corresponding to the screenshot request is determined; zooming the first rectangular frame to obtain a zoomed second rectangular frame; determining a target scaling for scaling the map based on the at least one annotation label included in the first rectangular frame and the second rectangular frame; performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result; in the embodiment, the target zoom scale is determined by combining the annotation tags, so that the target screenshot result obtained by zooming the map by using the first rectangular frame comprises all the annotation tags, the map screenshot with the annotation tags is realized, and the problem that the annotation tags are absent or the annotation tags are not completely displayed in the screenshot result is solved.
Optionally, step 104 in the above embodiment may include:
and zooming the first rectangular frame in a manner of unchanging the aspect ratio according to a set proportion to obtain a zoomed second rectangular frame.
Optionally, as shown in fig. 2, in this embodiment, the first rectangular frame of the screenshot is divided into two regions: a first rectangular frame represented by the larger rectangular frame is a final screenshot rectangle, and a second rectangular frame with a smaller interior is a display area of a labeling label (POI label) and a central point; wherein, the central point coordinate is the central point of the screenshot rectangle all the time; in this embodiment, the set proportion may be adjusted according to the actual application scenario, and the more desirable the label is to be marked and concentrated in the middle, the larger the set proportion may be set; for example, for aesthetic reasons, the ratio of the width (or length) of the second rectangular frame to the width (or length) of the first rectangular frame may satisfy the golden ratio, i.e., the ratio
An approximation is 0.618.
As shown in fig. 3, based on the embodiment shown in fig. 1, step 106 may include the following steps:
The labeling tag in this embodiment may be a POI tag, the labeling tag is a rectangular frame corresponding to labeling content carried in a map, and the rectangular frame may be generated according to map coordinates, optionally, the height of the labeling frame is determined according to the height of characters in the labeling content (generally, the height of the labeling characters in the map is uniform, and the height of the labeling frame is determined based on the height), the length of the labeling frame is determined according to the length of characters in the labeling content, of course, a maximum value may be set for the length, and display omission exceeding the maximum value is omitted, for example, overlong content in the labeling content is displayed in an ellipsis form, so as to ensure that the length of the labeling frame does not exceed the maximum value.
In this embodiment, the position coordinates of the third rectangular frame are determined based on the coordinates of each tag frame and the coordinates of the center point, so that all the tag frames and the coordinates of the center point are in the third rectangular frame, and the display area in which all the tag frames and the coordinates of the center point are embodied by the third rectangular frame is realized.
The purpose of this embodiment is to display all the label frames and the coordinates of the center point in the second rectangular frame, and after the operation of step 1062, the display area of all the label frames and the coordinates of the center point is embodied by the third rectangular frame, therefore, this embodiment needs to scale the third rectangular frame so that the third rectangular frame is completely surrounded by the second rectangular frame, that is, at this time, the target scaling ratio can be determined by the proportional relationship between the second rectangular frame and the third rectangular frame, and the target scaling ratio realizes that the third rectangular frame is completely included in the second rectangular frame.
Optionally, step 1062 may include:
obtaining a plurality of label vertex coordinates corresponding to each label frame in at least one label frame;
determining four target vertexes from the coordinates of the multiple label vertexes and the coordinates of the central point;
a third rectangular box is derived based on the four target vertices, including at least one label box and center point coordinates.
In this embodiment, each tag frame is a rectangular frame, and therefore each tag frame corresponds to 4 tag vertex coordinates, which are an upper left corner coordinate, a lower left corner coordinate, an upper right corner coordinate, and a lower right corner coordinate; in this embodiment, the vertex coordinates corresponding to all the label frames are counted and combined with the coordinates of the central point, the maximum range value included by the coordinates can be determined (for example, the maximum range value is determined by extreme values of all the vertex coordinates and the central point coordinates on the x axis and the y axis), four target vertices can be determined by the range value, and then the third rectangular frame including all the label frames and the coordinates of the central point is determined.
Optionally, determining four target vertices from the plurality of label vertex coordinates and the center point coordinates comprises:
determining an x-axis maximum value and an x-axis minimum value of a plurality of label vertex coordinates and center point coordinates on an x-axis and a y-axis maximum value and a y-axis minimum value on a y-axis in a map;
and determining four target vertexes based on the x-axis maximum value, the x-axis minimum value, the y-axis maximum value and the y-axis minimum value.
In this embodiment, the vertex coordinates and the center point coordinates of the plurality of labels are sorted into a vertex set, and then the maximum value of the y-axis is found from the vertex set: ymax, minimum y-axis: ymin, an x-axis minimum value Xmin and an x-axis maximum value Xmax; optionally, the value of another axis does not need to be limited when obtaining the 4 extreme values, for example, when obtaining Ymax, the x-axis value corresponding to the vertex may be any value, which is not limited in this embodiment; optionally, x-axis values of all vertices in the vertex set may be extracted to obtain a set of x-axis value sets, y-axis values may be extracted to obtain a set of y-axis value sets, and then x-axis maximum values and x-axis minimum values may be obtained from the x-axis value sets (for example, maximum values and minimum values are obtained in order according to a size sorting); and obtaining a y-axis maximum value and a y-axis minimum value from the y-axis value set.
Then, four vertices are generated from the four extrema, and optionally, the extrema of the x-axis and the extrema of the y-axis are combined continuously to obtain coordinates of 4 vertices, for example: as shown in fig. 4, 4 vertices are obtained: a (Xmin, Ymax), B (Xmax, Ymax), C (Xmax, Ymin), D (Xmin, Ymin), connecting the four vertexes in sequence to form a rectangle (third rectangular frame), optionally, further calculating a central point O ((Xmin + Xmax)/2, (Ymin + Ymax)/2) in the third rectangular frame, and all label labels included in the first rectangular frame included in the third rectangular frame obtained based on the above technical means, and being capable of being displayed in the third rectangular frame completely, and for complete display, the third rectangular frame may have a length and/or width greater than that of the first rectangular frame.
As shown in fig. 5a, based on the embodiment shown in fig. 3, step 1063 may include the following steps:
In this embodiment, the frame center point of the third rectangular frame may be understood by referring to the center point O in the embodiment shown in fig. 4, in order to align the third rectangular frame with the second rectangular frame, in this embodiment, the frame center point and the center point coordinate are aligned first, and the two are overlapped, so as to reduce the deviation during zooming, and meet the first requirement of the map screenshot: the POI tag and center point are as centered as possible in the center of the screenshot result.
And 502, scaling the third rectangular frame based on the second rectangular frame, so that the scaled fourth rectangular frame is completely included in the second rectangular frame.
Optionally, after the frame center point is aligned with the center point coordinate, the effect shown in fig. 5b can be obtained, at this time, it is obvious that the width of the third rectangular frame is greater than that of the second rectangular frame, and the situation that the POI tag content cannot be completely displayed in the actual screenshot occurs, that is, the truncation problem occurs. Thus, to satisfy the second bar of the map screenshot requirement: the POI tag content is required to be in the screenshot picture area, and the situation of cutting or out of view does not occur, and this embodiment needs to scale the third rectangular frame equally (the aspect ratio is not changed), and scale the width of the third rectangular frame to the width of the display rectangle, as shown in fig. 5 c.
In this embodiment, by calculating a scaling ratio (for example, calculating a width ratio or calculating a length ratio) between the third rectangular frame and the fourth rectangular frame, the scaling ratio is a target scaling ratio that the map needs to be scaled, and scaling the map by the target scaling ratio realizes that all the label tags are included in the second rectangular frame, thereby satisfying two requirements of the map screenshot, and realizing obtaining an attractive and non-truncated map screenshot with POI tag content.
Optionally, step 502 in the above embodiment may include:
determining a first ratio of the length of the third rectangular frame to the length of the second rectangular frame, and determining a second ratio of the width of the third rectangular frame to the width of the second rectangular frame;
in response to the first proportion being greater than or equal to the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the first proportion to obtain a fourth rectangular frame;
and in response to the first proportion being smaller than the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the second proportion to obtain a fourth rectangular frame.
In this embodiment, in order to make the third rectangular frame completely included in the second rectangular frame after scaling, the present embodiment needs to determine whether scaling is performed by length or by width, for example, in the embodiment shown in fig. 5b, the length of the third rectangular frame is smaller than the length of the second rectangular frame, expressed in scale as the first scale is smaller than 1, and the width is greater than the width of the second rectangular frame, expressed in proportion as a second proportion greater than 1, at which point, if the scaling is based on a first scale (length), the width direction will be far beyond the second rectangular box, thus, by comparing the first ratio with the second ratio in this embodiment, the first ratio is smaller than the second ratio in the embodiment shown in FIG. 5b, thus, performing aspect ratio-invariant scaling of the third rectangular frame based on the second proportion (width) achieves that the resulting fourth rectangular frame is completely encompassed by the second rectangular frame.
As shown in fig. 6, based on the embodiment shown in fig. 1, step 108 may include the following steps:
and step 1081, performing corresponding zooming operation on the map according to the target zooming scale to obtain the target map.
In this embodiment, after the target zoom ratio is obtained, it can be known that all the label labels and the center point coordinates that need to be embodied in the map screenshot are included in the fourth rectangular frame after the target zoom ratio processing is performed, and at this time, in order to uniformly display the scale, only the content in the third rectangular frame cannot be zoomed, which may cause problems of scale misadjustment, non-correspondence between the label and the map position, and the like.
And step 1082, performing screenshot operation on the target map according to the first rectangular frame and the center point coordinates to obtain a target screenshot result.
In this embodiment, although the map is zoomed, the size of the first rectangular frame corresponding to the screenshot request is not changed, that is, the size of the screenshot result is not changed, and the size of the first rectangular frame is still maintained.
Any of the map capture methods provided by embodiments of the present disclosure may be performed by any suitable device having data processing capabilities, including but not limited to: terminal equipment, a server and the like. Alternatively, any of the map screenshot methods provided by the embodiments of the present disclosure may be executed by a processor, for example, the processor may execute any of the map screenshot methods mentioned in the embodiments of the present disclosure by calling a corresponding instruction stored in a memory. And will not be described in detail below.
Exemplary devices
Fig. 7 is a schematic structural diagram of a map screenshot device according to an exemplary embodiment of the present disclosure. As shown in fig. 7, the apparatus provided in this embodiment includes:
and a first rectangular frame module 71, configured to determine, based on the coordinates of the central point, the length, and the width corresponding to the received screenshot request, a first rectangular frame corresponding to the screenshot request.
The first scaling module 72 is configured to scale the first rectangular frame to obtain a scaled second rectangular frame.
And a target scale determining module 73, configured to determine a target scale for zooming the map based on the at least one annotation tag included in the first rectangular frame and the second rectangular frame.
And the screenshot module 74 is configured to perform screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
According to the map screenshot device provided by the embodiment of the disclosure, based on the coordinates, the length and the width of a central point corresponding to a received screenshot request, a first rectangular frame corresponding to the screenshot request is determined; zooming the first rectangular frame to obtain a zoomed second rectangular frame; determining a target scaling for scaling the map based on the at least one annotation label included in the first rectangular frame and the second rectangular frame; performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result; in the embodiment, the target zoom scale is determined by combining the annotation tags, so that the target screenshot result obtained by zooming the map by using the first rectangular frame comprises all the annotation tags, the map screenshot with the annotation tags is realized, and the problem that the annotation tags are absent or the annotation tags are not completely displayed in the screenshot result is solved.
Optionally, the first scaling module 72 is specifically configured to scale the first rectangular frame according to a set ratio without changing the aspect ratio, so as to obtain a scaled second rectangular frame.
In some optional embodiments, the target ratio determination module 73 includes:
the label frame unit is used for determining at least one label included in the rectangular frame of the map based on the rectangular frame and determining a label frame corresponding to each label in the at least one label;
a third rectangular frame unit for determining a third rectangular frame based on the at least one label frame and the center point coordinates;
and the scaling determining unit is used for carrying out scaling on the third rectangular frame based on the second rectangular frame and determining the target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling.
Optionally, the third rectangular frame unit is specifically configured to obtain vertex coordinates of a plurality of labels corresponding to each label frame in at least one label frame; determining four target vertexes from the coordinates of the multiple label vertexes and the coordinates of the central point; a third rectangular box is derived based on the four target vertices, including at least one label box and center point coordinates.
Optionally, the third rectangular box unit, when determining four target vertices from the plurality of label vertex coordinates and the center point coordinates, is configured to determine an x-axis maximum value and an x-axis minimum value of the plurality of label vertex coordinates and the center point coordinates on an x-axis, and a y-axis maximum value and a y-axis minimum value on a y-axis in the map; and determining four target vertexes based on the x-axis maximum value, the x-axis minimum value, the y-axis maximum value and the y-axis minimum value.
Optionally, the scaling determining unit is specifically configured to align a frame center point of the third rectangular frame with the center point coordinate; scaling the third rectangular frame based on the second rectangular frame, so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame; a target scaling is determined based on a relationship between the third rectangular box and the fourth rectangular box.
Optionally, the scaling determining unit is configured to, when scaling the third rectangular frame based on the second rectangular frame so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame, determine a first ratio of a length of the third rectangular frame to a length of the second rectangular frame, and determine a second ratio of a width of the third rectangular frame to a width of the second rectangular frame; in response to the first proportion being greater than or equal to the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the first proportion to obtain a fourth rectangular frame; and in response to the first proportion being smaller than the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the second proportion to obtain a fourth rectangular frame.
Optionally, the screenshot module is specifically configured to perform a corresponding zoom operation on the map according to the target zoom scale to obtain a target map; and performing screenshot operation on the target map according to the first rectangular frame and the center point coordinates to obtain a target screenshot result.
Exemplary electronic device
Next, an electronic apparatus according to an embodiment of the present disclosure is described with reference to fig. 8. The electronic device may be either or both of the first device 100 and the second device 200, or a stand-alone device separate from them that may communicate with the first device and the second device to receive the collected input signals therefrom.
FIG. 8 illustrates a block diagram of an electronic device in accordance with an embodiment of the disclosure.
As shown in fig. 8, the electronic device 80 includes one or more processors 81 and memory 82.
The processor 81 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device 80 to perform desired functions.
In one example, the electronic device 80 may further include: an input device 83 and an output device 84, which are interconnected by a bus system and/or other form of connection mechanism (not shown).
For example, when the electronic device is the first device 100 or the second device 200, the input device 83 may be a microphone or a microphone array as described above for capturing an input signal of a sound source. When the electronic device is a stand-alone device, the input means 83 may be a communication network connector for receiving the acquired input signals from the first device 100 and the second device 200.
The input device 83 may include, for example, a keyboard, a mouse, and the like.
The output device 84 may output various information including the determined distance information, direction information, and the like to the outside. The output devices 84 may include, for example, a display, speakers, a printer, and a communication network and its connected remote output devices, among others.
Of course, for simplicity, only some of the components of the electronic device 80 relevant to the present disclosure are shown in fig. 8, omitting components such as buses, input/output interfaces, and the like. In addition, the electronic device 80 may include any other suitable components depending on the particular application.
Exemplary computer program product and computer-readable storage Medium
In addition to the methods and apparatus described above, embodiments of the present disclosure may also be a computer program product comprising computer program instructions that, when executed by a processor, cause the processor to perform the steps in the map screenshot method according to various embodiments of the present disclosure described in the "exemplary methods" section above of this specification.
The computer program product may write program code for carrying out operations for embodiments of the present disclosure in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.
Furthermore, embodiments of the present disclosure may also be a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, cause the processor to perform the steps in the map screenshot method according to various embodiments of the present disclosure described in the "exemplary methods" section above in this specification.
The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing describes the general principles of the present disclosure in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present disclosure are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present disclosure. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the disclosure is not intended to be limited to the specific details so described.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The block diagrams of devices, apparatuses, systems referred to in this disclosure are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
It is also noted that in the devices, apparatuses, and methods of the present disclosure, each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be considered equivalents of the present disclosure.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the disclosure to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A method for screenshot of a map, comprising:
determining a first rectangular frame corresponding to the screenshot request based on the coordinates, the length and the width of a central point corresponding to the received screenshot request;
zooming the first rectangular frame to obtain a zoomed second rectangular frame;
determining a target scaling for scaling the map based on the at least one annotation label included in the first rectangular frame and the second rectangular frame;
and performing screenshot operation from the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
2. The method of claim 1, wherein scaling the first rectangular frame to obtain a scaled second rectangular frame comprises:
and zooming the first rectangular frame in a constant aspect ratio according to a set proportion to obtain a zoomed second rectangular frame.
3. The method of claim 1 or 2, wherein determining a target scale for zooming the map based on the at least one annotation tag included in the first rectangular box and the second rectangular box comprises:
determining at least one label included in the rectangular frame of the map based on the rectangular frame, and determining a label frame corresponding to each label in the at least one label;
determining a third rectangular frame based on the at least one label frame and the center point coordinates;
and performing scaling on the third rectangular frame based on the second rectangular frame, and determining a target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling.
4. The method of claim 3, wherein determining a third rectangular box based on the at least one label box and the center point coordinates comprises:
obtaining a plurality of label vertex coordinates corresponding to each label frame in the at least one label frame;
determining four target vertices from the plurality of label vertex coordinates and the center point coordinates;
and obtaining a third rectangular frame comprising the at least one label frame and the center point coordinate based on the four target vertexes.
5. The method of claim 4, wherein the determining four target vertices from the plurality of label vertex coordinates and the center point coordinates comprises:
determining an x-axis maximum and an x-axis minimum of the plurality of label vertex coordinates and the center point coordinate on an x-axis and a y-axis maximum and a y-axis minimum on a y-axis in the map;
determining the four target vertices based on the x-axis maximum, the x-axis minimum, the y-axis maximum, and the y-axis minimum.
6. The method according to any one of claims 3-5, wherein the scaling the third rectangular frame based on the second rectangular frame, and the determining the target scaling based on the third rectangular frame before scaling and the third rectangular frame after scaling comprises:
aligning the frame center point of the third rectangular frame with the center point coordinate;
scaling the third rectangular frame based on the second rectangular frame, so that a fourth rectangular frame obtained after scaling is completely included in the second rectangular frame;
determining a target scaling based on a relationship between the third rectangular box and the fourth rectangular box.
7. The method of claim 6, wherein the scaling the third rectangular frame based on the second rectangular frame such that a scaled fourth rectangular frame is completely included in the second rectangular frame comprises:
determining a first ratio of the length of the third rectangular frame to the length of the second rectangular frame, determining a second ratio of the width of the third rectangular frame to the width of the second rectangular frame;
in response to the first ratio being greater than or equal to the second ratio, performing aspect ratio-invariant scaling on the third rectangular frame based on the first ratio to obtain the fourth rectangular frame;
and in response to the first proportion being smaller than the second proportion, performing aspect ratio-invariant scaling on the third rectangular frame based on the second proportion to obtain the fourth rectangular frame.
8. The method according to any one of claims 1 to 7, wherein the performing a screenshot operation from the map subjected to the target scaling process based on the first rectangular box to obtain a target screenshot result comprises:
carrying out corresponding zooming operation on the map according to the target zooming scale to obtain a target map;
and performing screenshot operation on the target map according to the first rectangular frame and the central point coordinate to obtain a target screenshot result.
9. A map capture device, comprising:
the first rectangular frame module is used for determining a first rectangular frame corresponding to the screenshot request based on the center point coordinate, the length and the width corresponding to the received screenshot request;
the first zooming module is used for zooming the first rectangular frame to obtain a zoomed second rectangular frame;
a target scale determination module, configured to determine a target scale for zooming the map based on the at least one annotation tag included in the first rectangular frame and the second rectangular frame;
and the screenshot module is used for carrying out screenshot operation on the map subjected to the target scaling processing based on the first rectangular frame to obtain a target screenshot result.
10. A computer-readable storage medium, characterized in that the storage medium stores a computer program for executing the map capture method of any one of claims 1 to 8.
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