CN111126023B - Graphic processing method, system, readable storage medium and computer device - Google Patents
Graphic processing method, system, readable storage medium and computer device Download PDFInfo
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Abstract
The invention discloses a graphic processing method, a system, a readable storage medium and computer equipment, wherein the method comprises the following steps: acquiring graphic data to be visualized; performing visual drawing on the graphic data in the initial drawing area to obtain an intermediate graphic; screenshot is carried out on the intermediate graph according to the size of the initial layout area, and the picture obtained by screenshot is calculated by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio; and adjusting the initial canvas area according to the optimal horizontal and vertical ratios, and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic without a blank area. The invention can effectively remove blank areas of graphs without coordinate axes, such as pie charts or topographic charts.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and a system for processing a graphic, a readable storage medium, and a computer device.
Background
In daily work and learning, graphical data often need to be mapped visually, for example, data in an excel table is converted into a bar graph or a pie graph, a topographic map and the like.
For the graphs with coordinate axes such as the column graph, when the visual drawing is performed, the coordinate axes can be expanded to the whole canvas area as much as possible to perform drawing, so that blank areas are reduced, namely, the graphs with coordinate axes generated by the visual drawing do not have the problem of more blank areas generally. However, in the case of a graph having no coordinate axis, such as a pie chart or a topographic chart, there is a problem that many blank regions are left when visualized drawing is performed, which affects the appearance of the graph, and if the blank regions are removed by processing the graph having the coordinate axis, the graph is deformed.
Disclosure of Invention
Therefore, an object of the present invention is to provide a graphic processing method to effectively remove blank areas of a graphic without coordinate axes, such as a pie chart or a topographic chart.
The invention provides a graphic processing method, which comprises the following steps:
acquiring graphic data to be visualized;
performing visual drawing on the graphic data in the initial drawing area to obtain an intermediate graphic;
screenshot is carried out on the intermediate graph according to the size of the initial layout area, and the picture obtained by screenshot is calculated by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio;
and adjusting the initial canvas area according to the optimal horizontal and vertical ratios, and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic without a blank area.
According to the graphic processing method provided by the invention, the intermediate graphic made in the initial canvas area is subjected to screenshot, then the picture obtained by screenshot is calculated by adopting an image-based aspect ratio algorithm to determine the optimal aspect ratio, finally the initial canvas area is adjusted according to the optimal aspect ratio, and the visual plotting is carried out again in the adjusted canvas area, and finally the new graphic with the blank area removed can be obtained.
In addition, the graphics processing method according to the present invention may further include the following additional features:
further, the step of calculating the picture obtained by screenshot by using an image-based aspect ratio algorithm to determine the optimal aspect ratio specifically includes:
carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
Further, the step of determining the optimal aspect ratio suitable for the gray scale map by using a synthetic vector method for the gray scale map specifically includes:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis, and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
and the drawing area is a drawing area corresponding to the initial aspect ratio of the middle graph.
Further, the step of performing visual drawing on the graphic data in the initial drawing area to obtain an intermediate graphic specifically includes:
acquiring drawing parameters input by a user and aiming at the graphic data;
and carrying out visual drawing on the graphic data in the initial drawing area according to the drawing parameters to obtain an intermediate graphic.
Further, the plotting parameter includes at least one of a graph category, a value axis, a classification axis, and a filtering condition.
Another objective of the present invention is to provide a graphic processing system to effectively remove blank areas of a graphic without coordinate axes, such as a pie chart or a topographic chart.
A graphics processing system, comprising:
the acquisition module is used for acquiring graphic data to be visualized;
the drawing module is used for carrying out visual drawing on the graphic data in the initial drawing area so as to obtain an intermediate graphic;
the calculation module is used for carrying out screenshot on the intermediate graph according to the size of the initial layout area and calculating the picture obtained by screenshot by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio;
and the adjusting module is used for adjusting the initial canvas area according to the optimal horizontal and vertical ratio and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic with a blank area removed.
According to the image processing system provided by the invention, the intermediate image made in the initial canvas area is subjected to screenshot, then the image obtained by screenshot is calculated based on the image aspect ratio algorithm to determine the optimal aspect ratio, finally the initial canvas area is adjusted according to the optimal aspect ratio, and the visualization plotting is carried out again in the adjusted canvas area, and finally the new image with the blank area removed can be obtained.
In addition, the graphics processing system according to the present invention may further have the following additional features:
further, the calculation module includes:
the processing unit is used for carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and the determining unit is used for determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
Further, the determining unit is specifically configured to:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis, and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
and the drawing area is a drawing area corresponding to the initial aspect ratio of the middle graph.
Further, the mapping module is specifically configured to:
acquiring drawing parameters input by a user and aiming at the graphic data;
and carrying out visual drawing on the graphic data in the initial drawing area according to the drawing parameters to obtain an intermediate graphic.
Further, the plotting parameter includes at least one of a graph category, a value axis, a classification axis, and a filtering condition.
The invention also proposes a readable storable medium on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
The invention also proposes a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the program.
Drawings
The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a graphics processing method according to a first embodiment of the invention;
FIG. 2 is a diagram illustrating a graphics processing system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a graphics processing method according to a first embodiment of the present invention includes steps S101 to S104.
S101, acquiring graphic data to be visualized.
The user can select graphic data to be loaded for visualization and upload the graphic data to the system, and specifically, data loading in formats such as excel and CSV can be realized.
And S102, performing visual drawing on the graphic data in the initial drawing area to obtain an intermediate graphic.
In specific implementation, a drawing parameter for the graphic data input by a user may be obtained first, and then the graphic data is visually drawn in the initial drawing area according to the drawing parameter to obtain an intermediate graphic. The initial canvas area refers to a canvas area corresponding to a made graph when the graph is drawn for the first time. The drawing parameters comprise at least one of a graph category, a value axis, a classification axis and a filtering condition, the drawing parameters are set by a user, for example, the user only selects data of certain rows and columns in an excel table to perform visual drawing, and after the drawing parameters are determined, the graph data are visually drawn in an initial drawing area to obtain an intermediate graph.
S103, screenshot is conducted on the middle graph according to the size of the initial layout area, and the picture obtained through screenshot is calculated through an image aspect ratio algorithm to determine the optimal aspect ratio.
The step of carrying out screenshot on the intermediate graph according to the size of the initial layout area means that when the screenshot is carried out, the size of the initial layout area is large, the size of the screenshot is large, and a part of the screenshot is not intercepted.
Specifically, the step of calculating the picture obtained by screenshot by using an image-based aspect ratio algorithm to determine the optimal aspect ratio specifically comprises:
carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
As a specific example, the step of determining the optimal aspect ratio suitable for the gray scale map by using a synthetic vector method for the gray scale map specifically includes:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis (the line graph generally consists of a plurality of vector line segments), and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
the canvas area corresponding to the initial aspect ratio of the middle graph can be regarded as the ratio between the total changes in the x direction and the y direction in the whole density field, and the algorithm has the characteristic of high calculation speed.
And S104, adjusting the initial canvas area according to the optimal horizontal and vertical ratios, and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic with a blank area removed.
When the graphical data is re-plotted visually, the plotting parameters for the graphical data, which are input by the user and acquired in the step S102, may be directly invoked, and the user is not required to input the plotting parameters repeatedly.
According to the graphic processing method provided by the invention, the intermediate graphic made in the initial canvas area is subjected to screenshot, then the picture obtained by screenshot is calculated by adopting an image-based aspect ratio algorithm to determine the optimal aspect ratio, finally the initial canvas area is adjusted according to the optimal aspect ratio, and the visual plotting is carried out again in the adjusted canvas area, and finally the new graphic with the blank area removed can be obtained.
Referring to fig. 2, based on the same inventive concept, a graphics processing system according to a second embodiment of the present invention includes:
the acquisition module is used for acquiring graphic data to be visualized;
the drawing module is used for carrying out visual drawing on the graphic data in the initial drawing area so as to obtain an intermediate graphic;
the calculation module is used for carrying out screenshot on the intermediate graph according to the size of the initial layout area and calculating the picture obtained by screenshot by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio;
and the adjusting module is used for adjusting the initial canvas area according to the optimal horizontal and vertical ratio and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic with a blank area removed.
In this embodiment, the calculation module includes:
the processing unit is used for carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and the determining unit is used for determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
In this embodiment, the determining unit is specifically configured to:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis, and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
and the drawing area is a drawing area corresponding to the initial aspect ratio of the middle graph.
In this embodiment, the mapping module is specifically configured to:
acquiring drawing parameters input by a user and aiming at the graphic data;
and carrying out visual drawing on the graphic data in the initial drawing area according to the drawing parameters to obtain an intermediate graphic.
In this embodiment, the mapping parameter includes at least one of a graphic category, a value axis, a classification axis, and a filter condition.
According to the image processing system provided by the invention, the intermediate image made in the initial canvas area is subjected to screenshot, then the image obtained by screenshot is calculated based on the image aspect ratio algorithm to determine the optimal aspect ratio, finally the initial canvas area is adjusted according to the optimal aspect ratio, and the visualization plotting is carried out again in the adjusted canvas area, and finally the new image with the blank area removed can be obtained.
Furthermore, an embodiment of the present invention also proposes a readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method described in the first embodiment.
Furthermore, an embodiment of the present invention also provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the steps of the method in the first embodiment when executing the program.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A method of graphics processing, comprising:
acquiring graphic data to be visualized;
performing visual drawing on the graphic data in the initial drawing area to obtain an intermediate graphic;
screenshot is carried out on the intermediate graph according to the size of the initial layout area, and the picture obtained by screenshot is calculated by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio;
adjusting the initial canvas area according to the optimal horizontal and vertical ratio, and performing visual plotting on the graphic data in the adjusted canvas area again to obtain a new graphic without a blank area;
the method for determining the optimal aspect ratio comprises the following steps of calculating a picture obtained by screenshot by adopting an image-based aspect ratio algorithm:
carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
2. The graphics processing method according to claim 1, wherein the step of determining the optimal aspect ratio suitable for the gray-scale map by using a composite vector method for the gray-scale map specifically comprises:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis, and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
and the drawing area is a drawing area corresponding to the initial aspect ratio of the middle graph.
3. The method for processing graphics as claimed in claim 1, wherein said step of visually plotting said graphics data in said initial plotting area to obtain an intermediate graphic specifically comprises:
acquiring drawing parameters input by a user and aiming at the graphic data;
and carrying out visual drawing on the graphic data in the initial drawing area according to the drawing parameters to obtain an intermediate graphic.
4. The graphics processing method according to claim 3, wherein the plotting parameter includes at least one of a graphics class, a value axis, a classification axis, and a filter condition.
5. A graphics processing system, comprising:
the acquisition module is used for acquiring graphic data to be visualized;
the drawing module is used for carrying out visual drawing on the graphic data in the initial drawing area so as to obtain an intermediate graphic;
the calculation module is used for carrying out screenshot on the intermediate graph according to the size of the initial layout area and calculating the picture obtained by screenshot by adopting an image-based aspect ratio algorithm so as to determine the optimal aspect ratio;
the adjusting module is used for adjusting the initial canvas area according to the optimal horizontal and vertical ratio and performing visual construction on the graphic data in the adjusted canvas area again to obtain a new graphic with a blank area removed;
wherein the calculation module comprises:
the processing unit is used for carrying out graying processing on the picture obtained by screenshot to obtain a grayscale image;
and the determining unit is used for determining the optimal aspect ratio suitable for the gray-scale image by adopting a synthetic vector method for the gray-scale image.
6. The graphics processing system of claim 5, wherein the determination unit is specifically configured to:
the resultant vector method based on the line graph takes the total rate of change of the line segments in the x and y directions as the aspect ratio, as shown in the following formula:
wherein the content of the first and second substances,
in order to achieve the optimum aspect ratio,
and
respectively representing the change rate of the ith vector line segment in the line graph in the directions of the x axis and the y axis, and writing the above expression into a line integral form as shown in the following expression:
wherein C is the total arc length of the line segment, ds is the differential of the arc length,
is the direction angle of the line segment; converting the above formula into a two-dimensional form to obtain a graph-based aspect ratio determination method, and regarding the gray scale map as a two-dimensional density distribution function
Gradient thereof in the x-axis
Instead of the former
Density field of
Gradient in y-axis
Instead of the former
Finally, an objective function calculated according to the optimal aspect ratio obtained from the gray scale map is as follows:
wherein the content of the first and second substances,
and the drawing area is a drawing area corresponding to the initial aspect ratio of the middle graph.
7. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-4.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 4 when executing the program.
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| US7417645B2 (en) * | 2003-03-27 | 2008-08-26 | Microsoft Corporation | Markup language and object model for vector graphics |
| WO2013106984A1 (en) * | 2012-01-16 | 2013-07-25 | Google Inc. | Learning painting styles for painterly rendering |
| CN103729853B (en) * | 2014-01-15 | 2016-06-08 | 武汉大学 | High score remote sensing image building under three-dimension GIS auxiliary damages detection method |
| CN104392486B (en) * | 2014-11-25 | 2017-07-28 | 西安理工大学 | One kind point cloud scene reconstruction method |
| CN105958942A (en) * | 2016-05-13 | 2016-09-21 | 江苏中天科技软件技术有限公司 | WEB based photovoltaic power station monitoring system |
| CN107393459B (en) * | 2017-07-31 | 2020-07-31 | 京东方科技集团股份有限公司 | Image display method and device |
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| CN1154519A (en) * | 1995-10-12 | 1997-07-16 | 夏普公司 | Character pattern generator |
| CN108875703A (en) * | 2018-07-14 | 2018-11-23 | 昆山数字城市信息技术有限公司 | The SAR image lines detection method converted using vector Radon |
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